Zeitschriftenartikel: „Starch, powder“

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Adetoro, Adegoke Olusesan, Umezuruike Linus Opara und Olaniyi Amos Fawole. „Effect of Carrier Agents on the Physicochemical and Technofunctional Properties and Antioxidant Capacity of Freeze-Dried Pomegranate Juice (Punica granatum) Powder“. Foods 9, Nr. 10 (01.10.2020): 1388. http://dx.doi.org/10.3390/foods9101388.

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The physicochemical and technofunctional properties and antioxidant capacity of freeze-dried “Wonderful” pomegranate juice powder (PJP), produced with different carrier agents, were investigated. Powders were produced using maltodextrin, gum Arabic, and waxy starch as carrier agents and characterised by scanning electron microscopy (SEM) and particle size distribution. Results showed that PJP produced with maltodextrin had the highest yield (46.6%), followed by gum arabic (40.6%), while waxy starch had the least yield (35.4%). Powders produced with maltodextrin (96.5%) and gum arabic (96.1%) were highly soluble, which indicates better reconstitution properties. Waxy starch-added PJP had the lowest hygroscopicity (4.7%), which offers good stability during storage and a lower degree of caking compared to maltodextrin (10.2%) and gum arabic (12.6%) powders. Powders obtained from maltodextrin and gum arabic exhibited larger particle diameters ranging between 12 to 120 µm while the lowest particle diameter range was with powders formed from waxy starch (8–40 µm). Freeze-dried pomegranate powder produced with maltodextrin retained more redness (a*) by approximately 44%, compared to gum arabic. Similarly, PJP with maltodextrin and gum arabic had higher total soluble solids (10.3 and 10.4 °Brix), respectively. Total anthocyanin content was 54% more in PJP with maltodextrin than waxy starch PJP. Similarly, the powder produced with maltodextrin had higher radical scavenging activity (33.19 mM TE/g dry matter; DM) compared to gum arabic (28.45 mM TE/g DM) and waxy starch (26.96 mM TE/g DM). Overall, maltodextrin reflected the most suitable carrier agent to produce PJP.

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Addelia, Gita Nevara, Shyan Yea Chay, Kharidah Muhammad, Hasanah Mohd Ghazali und Roselina Karim. „How Pullulanase Affects Resistant Starch and Antioxidant Activity in Purple Sweet Potato Powder?“ Turkish Journal of Agriculture - Food Science and Technology 7, Nr. 11 (22.11.2019): 1795. http://dx.doi.org/10.24925/turjaf.v7i11.1795-1798.2621.

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Purple sweet potato (PSP) serves as a potential source for dual functionalities of resistant starch (RS) and antioxidants. This study aims to evaluate the effects of pullulanase enzyme on these functionalities. Results showed that the incorporation of pullulanase into PSP powder could significantly increase the RS content from 3.06 g/100g to 7.11 g/100g. However, total anthocyanin content and DPPH radical scavenging activity reduced significantly, due to the interference from RS fragments on anthocyanins. Securing both functionalities (RS and antioxidant) within the same sample is seemingly impossible. A compromise between RS and antioxidant properties in coloured, starchy plant powders is recommended.

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Inaba, Ryuichi, Hiroshi Furuta, Tsutomu Uehara und Yoshio Fujiyama. „Application of porous starch-complex powder.“ Journal of Society of Cosmetic Chemists of Japan 29, Nr. 2 (1995): 146–53. http://dx.doi.org/10.5107/sccj.29.146.

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Hunt, Thomas K. „Starch Powder Contamination of Surgical Wounds“. Archives of Surgery 129, Nr. 8 (01.08.1994): 825. http://dx.doi.org/10.1001/archsurg.1994.01420320047008.

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Mastalska-Popławska, Joanna, Marek Sikora, Piotr Izak und Zuzanna Góral. „Role of starch in the ceramic powder synthesis: a review“. Journal of Sol-Gel Science and Technology 96, Nr. 3 (10.09.2020): 511–20. http://dx.doi.org/10.1007/s10971-020-05404-x.

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Abstract The main goal of this work was to demonstrate a broad range of starch applications in ceramic powder synthesis, and to point out that starch and its derivatives can successfully replace polyvinyl derivatives commonly used in ceramic formulations, as they are water-soluble saccharides, burn out more easily, reduce the exothermicity of the combustion reaction, and allow to receive fine and uniform ceramic powders. Starch is an eco-friendly and easily transformable natural carbohydrate polymer that is found in a variety of applications in ceramics and materials science. In this paper, we review the influence of starch on the physicochemical properties of the ceramic powders obtained by means of various synthesis methods (sol–gel method, combustion process, combined methods, and hydrothermal synthesis). Starch plays a differentiated role in each of these methods, i.e., it is a polymerizing agent in sol–gel method, a fuel in combustion process, and a substrate for carbon spheres in hydrothermal synthesis.

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Yang, D. J., Chang Kuk You, J. W. Kim, T. H. Kim, Hong In Shin, Kyo Han Kim, J. H. Lee und Suk Young Kim. „Preparation of Biodegradable Porous Calcium Metaphosphate Granules as Bone Filler by Starch Consolidation“. Key Engineering Materials 284-286 (April 2005): 369–72. http://dx.doi.org/10.4028/www.scientific.net/kem.284-286.369.

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Porous calcium metaphosphate granules for bone fillers were prepared by starch consolidation with baking powder and surfactant. Paste for foaming was prepared by the mixing of calcium metaphosphate powder and water with the various amount of starch (10~20㎛ size), where solid contents 30%, 45%, 60% of the paste. In order to obtain the optimum micro/macro porous structure, the appropriate contents of baking powder and surfactant at a fixed content of starch were examined. In order to examine the content of baking powder on pore morphology, the baking powder was added 60, 180, and 300 wt% of the paste at fixed content of starch. And then, in order to investigate the effect of surfactant on porous structure, surfactant was added 0.035, 0.1, and 0.16 wt% of paste weight at fixed content of starch and baking powder. Foaming was conducted using microwave method, and foamed samples were sintered at 900 °C. The sintered porous blocks with starch only showed uneven and closed macro pores without any micro pores. However, the sintered porous blocks with starch, baking powder, and surfactant showed homogeneous micro and macro porous structures ranging 20~60, and 300~1000 ㎛ in pore size, respectively. The porosity was increased with the increase of surfactant up to about 70 %.

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Lu, Xikun, Margaret A. Brennan, Wenqiang Guan, Jie Zhang, Li Yuan und Charles S. Brennan. „Enhancing the Nutritional Properties of Bread by Incorporating Mushroom Bioactive Compounds: The Manipulation of the Pre-Dictive Glycaemic Response and the Phenolic Properties“. Foods 10, Nr. 4 (30.03.2021): 731. http://dx.doi.org/10.3390/foods10040731.

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Wheat bread supplemented with mushroom powder from three different species of mushrooms was investigated in terms of starch characteristics (content, gelatinisation, and digestibility) and antioxidant capacities. The decrease in total starch contents, and increase in phenolic contents of the breads, were associated with increased mushroom powder contents. Mushroom inclusion reduced the rate of reducing sugar released over 120 min in an in vitro digestion compared to the control sample, implying a lower area under the curve (AUC) value with the inclusion of mushroom powder and a potentially lower predicted glycaemic response of the bread. Mushroom powder incorporation also enhanced the DPPH radical scavenging assay and oxygen radical absorbance capacity (ORAC) compared to control bread. The action of the addition of different mushroom powders on the bread crust and crumb microstructure properties was also studied. Mushroom powder altered the internal microstructure of the bread crust and crumb by affecting the interactions between starch and the other components of the bread. Overall, this shows that mushroom powder could be added to bread to deliver health benefits to consumers.

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Budi, Canggih Setya, Indriana Kartini und Bambang Rusdiarso. „SYNTHESIS OF MESOPOROUS TITANIA BY POTATO STARCH TEMPLATED SOL-GEL REACTIONS AND ITS CHARACTERIZATION“. Indonesian Journal of Chemistry 10, Nr. 1 (21.06.2010): 26–31. http://dx.doi.org/10.22146/ijc.21476.

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Mesoporous titania powders with high-order crystalline building blocks had been synthesized through the sol-gel process using potato starch gel template. Internal spongelike pore structure of starch gel template was generated by heating the starch granules at 95 °C in water solution and freezing the starch gel at -15 °C. The synthesis routes were performed by immersing the starch gel template for 4 days into the white colloidal solution of TiO2 nanoparticles, which were prepared by hydrolyzing titanium (IV) tetraisopropoxide (TTIP) in ethanol at pH 1. Mesoporous TiO2 powders were obtained by two different ways of template removal, performed by calcination of the TiO2-starch composites at 600 °C for 4 h or combination of extraction with ethanol-HCl (2:1) at 80 °C and calcination at 500 °C for 4 h. Fourier Transform Infra Red (FT-IR) spectra shows both of template removal methods result in decreasing of characteristic vibrational band of the starch hydrocarbon on the resulted TiO2 powders. The X-Ray Diffraction (XRD) pattern imply that the concentrations of starch gel template influence the anatase crystallite peaks intensity of the synthesized TiO2 powders. TiO2 templated by 20% of starch sponges gel has highest intensity of anatase crystallite. Scherrer calculation inidicated that anatase particle size has nanoscale dimmension up to 12.96 nm. The nano-architecture feature of mesoporous TiO2 scaffolds was also evaluated by the Scanning Electron Microscope (SEM). It is shown that mesoporous TiO2 framework consist of nanocrystalline TiO2 particles as buiding blocks. The N2 adsorption-desorption isotherm curves assign that TiO2 powder resulted from extraction-calcination route has higher mesoporosity than that of only calcinated. The synthesized mesoporous TiO2 powder exhibits high Brunauer-Emmet-Teller (BET) specific surface area up to 65.65 m2/g. Keywords: mesoporous TiO2, potato starch, template

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Manchun, S., Jurairat Nunthanid, Sontaya Limmatvapirat und Pornsak Sriamornsak. „Effect of Ultrasonic Treatment on Physical Properties of Tapioca Starch“. Advanced Materials Research 506 (April 2012): 294–97. http://dx.doi.org/10.4028/www.scientific.net/amr.506.294.

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A new processing method for the production of modified starch, high power ultrasonic treatment (400 W), was applied to native tapioca starch. The effect of processing parameters such as ultrasound amplitude (50 and 100%) and sonication time (10, 20 and 30 minutes) on the properties of the modified starches was investigated. Starch granule morphology observed by scanning electron microscopy (SEM), swelling power, solubility and powder x-ray diffractometry (PXRD) of the obtained ultrasonically treated tapioca starch were determined and compared with native as well as heat-treated tapioca starches. The results from SEM and PXRD showed that the ultrasonic treatment of tapioca starch distorted the crystalline region in starch granules, especially at higher amplitude or sonication time. The swelling power of the tapioca starch increased after treatment with both heat and ultrasound, in which the swelling power of ultrasonically treated starch was higher than that of heat-treated starch. It was found that tapioca starch treated by ultrasound for a certain period of time has an increase in solubility. The increase in the swelling power is associated with water absorption capacity and starch granules solubility.

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Bootklad, Munlika, und Kaewta Kaewtatip. „Biodegradation of thermoplastic starch/eggshell powder composites“. Carbohydrate Polymers 97, Nr. 2 (September 2013): 315–20. http://dx.doi.org/10.1016/j.carbpol.2013.05.030.

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Kiin-Kabari, D. B., O. M. Akusu und N. J. T. Emelike. „Fermentation of Corn Starch Powder for the Production of “Ogi”“. Journal of Food Research 7, Nr. 5 (09.07.2018): 49. http://dx.doi.org/10.5539/jfr.v7n5p49.

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Ogi was produced by fermenting corn starch powder for 24h and 48h using a seed culture (omidium) as a starter culture. Physicochemical properties such as pH, titratable acidity, viscosity, swelling power solubility, and proximate composition were determined. The sensory properties of the ogi produced was also determined and compared with ogi produced from the traditional method. The results of the proximate analysis showed that the carbohydrate content of sample B(fermented corn starch for 24h) is 78.47% and sample C(fermented corn starch for 48h) is 77.43% were significantly higher (p<0.05) when compared to the traditional method-sample A(73.43%).Protein content (10.63%) and fat content (5.10%) of sample A were significantly higher (p£0.05) than sample B (9.5%) (1.0%) and sample C (9.86%) (1.70%) respectively. The pH of ogi decreased from 5.18 at the beginning of the fermentation to 3.60 at the end of 48h. Whereas the titratable acidity increased from 0.27% to 0.63% after 48h of fermentation. The viscosity of the ogi in the gelatinized state increased as the fermentation period increased from 24h to 48h. There was ignificant (p³0.05) difference in color, flavor, aroma, taste, sourness, mouth feel and overall acceptability between sample A, C and B. The pH, titratable acidity, textural and sensory properties of ogi produced from corn starch powder that was fermented for 48h were more acceptable than ogi produced through the traditional method and from corn starch powder that was fermented for 24h.

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Labrath, Yogita P., Prafulla V. Belge, Uma G. Kulkarni und Vilas G. Gaikar. „Process intensification for enzyme assisted turmeric starch hydrolysis in hydrotropic and supercritical conditions“. International Journal of Chemical Reactor Engineering 19, Nr. 8 (18.06.2021): 851–59. http://dx.doi.org/10.1515/ijcre-2020-0161.

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Abstract The turmeric rhizome (Curcuma longa) contains curcuminoids embedded in the starch matrix. It is thus important to target starch hydrolysis to enhance extraction of curcuminoids. In the case of starch hydrolysis, α-amylase is more efficient when the starch is in a gelatinised form than when it is in its natural form. The present work includes hydrolysis of turmeric starch in its natural and gelatinised forms using α-amylase in hydrotrope solution (HS) and scCO2. The optimum rate of starch hydrolysis was obtained using 200 IU cm−3 of α-amylase, at reaction conditions of 6.5 pH at 328 K when 10% w/w of turmeric powder was stirred at 900 rpm in HSs. The hydrolysis in 15 MPa scCO2 at room temperature required a phase modifier and 40 min of residence time (RT). The enzyme treatment of turmeric powder in HSs increased the filtration rate for curcuminoid extraction (gelatinised and native) compared to untreated turmeric powder.

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Kongmuang, S., N. Phakdisirivichai, N. Detwattanadet, N. Samma, D. Anurakchanaphon und T. Choodam. „Effect of Coloring Agents on Starch Properties: In Powder and Paste Form“. Advanced Materials Research 93-94 (Januar 2010): 173–76. http://dx.doi.org/10.4028/www.scientific.net/amr.93-94.173.

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The aim of this study was focusing on the excipients interaction especially between coloring agents and diluents. There were two coloring agents with different charges ; methylene blue(M) showing positive charge while amaranth(A) giving negative charge but all having same concentration of 0.1% w/w in each mixing batch. There are five types of starch using as diluents; arrowroot starch (W), rice starch (R), cassava starch (S), corn starch (C) and lesser yam starch (l). The physical properties of starch powder and paste (5%w/v) were evaluated as angle of repose and viscosity respectively. While the concentration of both coloring agents were determined by either UV spectroscopy or eye observation. The storage conditions of all samples were kept in both light and dark area for 7 weeks. It was found in powder form that C gave the most stable of M while R gave the worst for m in both light and dark condition. M showed less influences on flow properties of starches than a in a powder state. The flow of C with M gave the best results. The W paste was shown to be the most stable physical properties. M was suitable for S paste in a dark condition. While A was suitable for C, R and W paste in a light condition. The charges of coloring agents might not be a major influence on some physical properties of starch in both powder and paste form.

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Alyami, Hamad S., Samer S. Abu-Alrub, Mater H. Mahnashi, Mohammad H. Alyami und Osaid T. Al Meanazel. „Characterization and evaluation of the performance of starch and cellulose as excipients for direct compression technique“. Tropical Journal of Pharmaceutical Research 19, Nr. 8 (18.11.2020): 1569–76. http://dx.doi.org/10.4314/tjpr.v19i8.1.

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Purpose: To investigate the influence of two often-used excipients (starch and microcrystalline cellulose) on the physical properties of powder blends and tablets that contain mannitol as diluent.Methods: Powder and powder mixtures of three commonly used excipients (starch, mannitol and microcrystalline cellulose) were thoroughly examined using the angle of repose for flowability, particle size analyzer to determine the diameter of the particles, scanning electron microscopy (SEM) for morphological assessment, and x-ray diffraction to determine crystalline/amorphous characteristics. Tablets were prepared by direct compression technique and were evaluated for mechanical strength and disintegration behavior as part of quality control test.Results: The results showed that increase in MCC concentration of the mixture leads to significantly enhanced flowability (p < 0.05) when compared to starch. The angle of repose for mannitol/MCC powder mixture with 70 % w/w MCC was approximately 29°, indicating good flow properties of thepowder mix. Moreover, starch tablets containing MCC exhibited better mechanical strength and longer disintegration time, while, at 1:1 ratio of MCC and mannitol, tablet disintegration was faster (33.0 ± 5.2s)Conclusion: MCC (at 30 %w/w in the blend) produces optimal flow of the powder blend and superior mechanical strength, Keywords: Tablet disintegration, Flowability, Starch, Hardness, Mechanical strength

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Goia, Tamiye Simone, Kalan Bastos Violin, José Carlos Bressiani und Ana Helena de Almeida Bressiani. „Mimicking Bone Architecture in a Metallic Structure“. Advances in Science and Technology 84 (September 2012): 7–12. http://dx.doi.org/10.4028/www.scientific.net/ast.84.7.

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The porous metallic structure has been developed to mimic the natural bone architecture, having interconnected porosity, disposing enough room to cell migration, anchoring, vascularization, nourishing and proliferation of new bone tissue. The titanium is used as porous implants due its excellent mechanical properties and biological interaction. Research evolving porous titanium has been done with purpose to achieve desirable pore size, total porosity percentage and influence of those in the increasing of bone-implant bond strength interface. Were prepared samples of titanium by powder metallurgy adding natural polymer: corn starch, rice starch, potato starch and gelatin; at proportion of 16 wt%. In aqueous solution the hydrogenated metallic powder (TiH2) and the polymer were mixed, homogenized and frozen in molds near net shape. The water was removed in kiln (38°C/12h) and the polymer by thermal treatment with air-oxidation (350 °C/1h) before sintering in high-vacuum (1300 °C/1h). Resulting from the process, the obtained pores by addition of potato and corn starchs, lead to homogenous and well distributed throughout structure. Samples obtained from addition of rice starch and gelatin formed macropores and micropores randomly distributed within the structure. The apparent porosity for all samples was near 40%. The processing technique allowed the open pore formation, in which the macropores mimics the trabecular bone structure and micropores allows the bone-implant anchorage.

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Feng, Jiachang, Jianpeng Dou, Zidan Wu, Dongxue Yin und Wenfu Wu. „Controlled Release of Biological Control Agents for Preventing Aflatoxin Contamination from Starch–Alginate Beads“. Molecules 24, Nr. 10 (14.05.2019): 1858. http://dx.doi.org/10.3390/molecules24101858.

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For the wise use of fungal biocontrol and metalaxyl fungicide, starch–alginate-based formulations have been developed by encapsulating metalaxyl and non-toxigenic Aspergillus flavus spores simultaneously in the form of microspheres using calcium chloride as a cross-linking agent. The formulations were characterized by Fourier transform infrared spectroscopy (FTIR), a scanning electron micrograph (SEM), and thermogravimetry (TGA). Formulation characteristics, including the bead size, entrapment efficiency, swelling ratio of the beads, and rheological properties, were analyzed. The release behavior of beads with different formulations was evaluated. The addition of kaolin and rice husk powder in starch–alginate beads retarded the release profile of spores and metalaxyl. The release of the active ingredient from starch–alginate–kaolin beads and starch–alginate–rice husk powder beads occurred in both a controlled and sustained manner. Additionally, the release rate decreased with the increase of kaolin or rice husk powder content. The beads added with kaolin were slower than the release of rice husk powder. In comparison, spores released slower and lasted longer than metalaxyl. The starch–alginate–kaolin formulations could be used as controlled release material in the field of biocontrol and reduce the harm of fungicides to the environment.

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Juneja, Prateek, Birender Kaur, Oluwatoyin A. Odeku und Inderbir Singh. „Development of Corn Starch-Neusilin UFL2 Conjugate as Tablet Superdisintegrant: Formulation and Evaluation of Fast Disintegrating Tablets“. Journal of Drug Delivery 2014 (23.09.2014): 1–13. http://dx.doi.org/10.1155/2014/827035.

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In the present study, corn Starch-Neusilin UFL2 conjugates were prepared by physical, chemical, and microwave methods with the aim of using the conjugates as tablet superdisintegrant. Various powder tests, namely, angle of repose, bulk density, tapped density, Hausner’s ratio, Carr’s index, swelling index, and powder porosity were conducted on the samples. The conjugates were characterized by ATR-FTIR, XRD, DSC, and SEM techniques. Heckel and Kawakita models were applied to carry out compression studies for the prepared conjugates. Fast disintegrating tablets of domperidone were prepared using corn starch and corn Starch-Neusilin UFL2 conjugates as tablet superdisintegrants in different concentrations. Conjugates were found to possess good powder flow and tabletting properties. Heckel analysis indicated that the conjugates prepared by microwave method showed the slowest onset of plastic deformation while Kawakita analysis indicated that the conjugates prepared by microwave method exhibited the highest amount of total plastic deformation. The study revealed that the corn Starch-Neusilin UFL2 conjugates possess improved powder flow properties and could be a promising superdisintegrant for preparing fast disintegrating tablet. Also, the results sugessted that the microwave method was found to be most effective for the preparation of corn Starch-Neusilin UFL2 conjugates.

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Nogueira, Gislaine Ferreira, Farayde Matta Fakhouri, José Ignacio Velasco und Rafael Augustus de Oliveira. „Active Edible Films Based on Arrowroot Starch with Microparticles of Blackberry Pulp Obtained by Freeze-Drying for Food Packaging“. Polymers 11, Nr. 9 (23.08.2019): 1382. http://dx.doi.org/10.3390/polym11091382.

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This research work evaluated the influence of the type of incorporation and variation in the concentration of blackberry pulp (BL) and microencapsulated blackberry pulp (ML) powders by freeze-drying on the chemical and physical properties of arrowroot starch films. Blackberry powders were added to the film-forming suspension in different concentrations, 0%, 20%, 30% and 40% (mass/mass of dry starch) and through two different techniques, directly (D) and by sprinkling (S). Scanning electron microscopy (SEM) images revealed that the incorporation of blackberry powder has rendered the surface of the film rough and irregular. Films incorporated with BL and ML powders showed an increase in thickness and water solubility and a decrease in tensile strength in comparison with the film containing 0% powder. The incorporation of blackberry BL and ML powders into films transferred colour, anthocyanins and antioxidant capacity to the resulting films. Films added with blackberry powder by sprinkling were more soluble in water and presented higher antioxidant capacity than films incorporated directly, suggesting great potential as a vehicle for releasing bioactive compounds into food.

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Yang, Ni, Gang Xie, Chong Jun Bao, Huai Ren Li, Xiao Hua Yu, Rong Xing Li und Zhan Liang Yu. „The Research on Effects of Different Binders on Performances of Carbonaceous Pelletizing in Industrial Silicon Production“. Materials Science Forum 833 (November 2015): 101–6. http://dx.doi.org/10.4028/www.scientific.net/msf.833.101.

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The use of powder materials in smelting process has some impact on the breathability of the burden, and it ultimately results in poor production and quality of industrial silicon. If pelletizing is prepared by these powder materials, it not only reduces production cost but also reuses waste effectively. It could protect forest resources productively and contributes to sustainable development if charcoal is replaced by pelletizing using as carbonaceous reducing agent. Different powders such as anthracite fine, petroleum coke powders, charcoal powders, silica fume have been produced in the production process of industrial silicon. Briquetting of these powders with a binder starch D was voted into submerged arc furnace not only utilizes the resources sufficiently, but also reduces the production costs. Effects of content of starch D as binder and CaO as pore former on compressive strength, the shatter strength, the heat intensity and porosity of pelletizing were investigated in this paper. The following results were got: first, the performances of pelletizing except porosity were excellent when starch D was used as binder; second, CaO could efficiently improve porosity, and the pelletizing could satisfy requirement of industrial silicon production.

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Yamauchi, Yui, Masatoshi Mine, Kazuhiro Nakashima, Masanori Sueyasu, Nobuaki Egashira und Ryozo Oishi. „Improving Preparation of Powder Medicines with Starch Diluent“. Iryo Yakugaku (Japanese Journal of Pharmaceutical Health Care and Sciences) 36, Nr. 9 (2010): 684–88. http://dx.doi.org/10.5649/jjphcs.36.684.

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Gaur, M. S., und K. Gaur. „Spontaneous Current Study in Wheat Starch Nano Powder“. Acta Physica Polonica A 117, Nr. 6 (Juni 2010): 945–48. http://dx.doi.org/10.12693/aphyspola.117.945.

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Edge, S., D. F. Steele, J. N. Staniforth, A. Chen und P. M. Woodcock. „Powder Compaction Properties of Sodium Starch Glycolate Disintegrants“. Drug Development and Industrial Pharmacy 28, Nr. 8 (Januar 2002): 989–99. http://dx.doi.org/10.1081/ddc-120006430.

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Asikin, Andi Noor, Indrati Kusumaningrum und Taufik Hidayat. „Effect of knife-fish bone powder addition on characteristics of starch and seaweed kerupuk as calcium and crude fiber sources“. Current Research in Nutrition and Food Science Journal 7, Nr. 2 (10.06.2019): 584–99. http://dx.doi.org/10.12944/crnfsj.7.2.27.

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Knife-fish bone is waste processing of kerupuk and amplang that have not been utilized optimally and potentially cause environmental pollution. Processing into a fish bone powder is one way to reduce environmental pollution and provide added value.It can be used as a fortification source of calcium in food products. Seaweed species are widely used in food processing as crude fiber and iodine sources. Therefore, it is necessary to do the processing of kerupuk with fortification of knife fish bone powder and seaweed as calcium and crude fiber sources. The objective of this research was to determine the effect of adding knife fish bone powder on characteristics of starch and seaweed kerupuk. The treatment in this study wasthe percentage of addition of knife fish bone powder: 0%, 5%, 10.15%, 20%. Calcium and crude fiber of both starch and seaweed kerupuk values varied significantly (p<0.05).Proximate values varied significantly (p<0.05) of both starch and seaweed kerupuk, except for protein and fat content. Phosphorous and whiteness level values significantly (p<0.05) for both starch and seaweed kerupuk.

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Ahmed, Yasser, Emad Ewais und Said El-Sheikh. „Effect of dispersion parameters on the consolidation of starch-loaded hydroxyapatite slurry“. Processing and Application of Ceramics 8, Nr. 3 (2014): 127–35. http://dx.doi.org/10.2298/pac1403127a.

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The influence of some parameters controlling the hydroxyapatite (HA) suspension rheology in terms of heat treatment of the HA powder prior to suspension preparation, suspension solid loading and the amount of corn starch addition was thoroughly investigated. The heat treatment of powder at 1100?C prior to suspension preparation was found to be extremely efficient in preparing suspensions with high solid loading of 59 vol.%. In contrast, the highest solid loading that could be developed from the non-heat treated powder was 14 vol.%. This phenomenon is consequence of the changes in the physical and chemical properties of the powder after the heat treatment step. The amount of native corn starch addition has ranged from 10 to 40 vol.%. The addition of corn starch leads to the high retardation in the suspension viscosity, particularly at low shear rate. On the contrary, at higher shear rate the situation is completely different. The properties of the consolidated green sample (produced from suspensions containing various corn starch amounts) in terms of relative density and compressive strength were studied. The results indicated that even though there were no considerable changes in the relative density, the compressive strength was sharply increased with increasing starch amount content until it reached a maximum at 30 vol.% and then decreased thereafter.

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Kiangkitiwan, Nopparut, und Kawee Srikulkit. „Poly(Lactic Acid) Filled with Cassava Starch-g-Soybean Oil Maleate“. Scientific World Journal 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/860487.

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Poly(lactic acid), PLA, is a biodegradable polymer, but its applications are limited by its high cost and relatively poorer properties when compared to petroleum-based plastics. The addition of starch powder into PLA is one of the most promising efforts because starch is an abundant and cheap biopolymer. However, the challenge is the major problem associated with poor interfacial adhesion between the hydrophilic starch granules and the hydrophobic PLA, leading to poorer mechanical properties. In this paper, soybean oil maleate (SOMA) was synthesized by grafting soybean oil with various weight percents of maleic anhydride (MA) using dicumyl peroxide (DCP) as an initiator. Then, SOMA was employed for the surface modifying of cassava starch powder, resulting in SOMA-g-STARCH. The obtained SOMA-g-STARCH was mixed with PLA in various weight ratios using twin-screw extruder, resulting in PLA/SOMA-g-STARCH. Finally, the obtained PLA/SOMA-g-STARCH composites were prepared by a compression molding machines. The compatibility, thermal properties, morphology properties, and mechanical properties were characterized and evaluated. The results showed that the compatibility, surface appearance, and mechanical properties at 90 : 10 and 80 : 20 ratios of PLA/SOMA-g-STARCH were the best.

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Mairiza, L., Mariana, M. Ramadhany und C. A. Feviyussa. „The effect of starch-garlic powder ratio on degradation rate of Gadung starch bioplastic“. IOP Conference Series: Materials Science and Engineering 334 (März 2018): 012085. http://dx.doi.org/10.1088/1757-899x/334/1/012085.

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Zhou, Shu-Chun, Heng-Lin Lv, Ning Li und Jie Zhang. „Effects of Chemical Admixtures on the Working and Mechanical Properties of Ordinary Dry-Mixed Mortar“. Advances in Materials Science and Engineering 2019 (22.01.2019): 1–10. http://dx.doi.org/10.1155/2019/5978089.

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The effects of hydroxypropyl methyl cellulose ether, starch ether, bentonite, and redispersion emulsoid powder on the working and mechanical properties of fresh dry-mixed mortar were studied. The results show that hydroxypropyl methyl cellulose ether has the greatest impact on the consistency and water retention of ordinary dry-mixed mortar and that redispersion emulsoid powder reduces the water action and starch ether has essentially no effect on water retention. It also shows that the time of mortar condensation when mixed with hydroxypropyl methyl cellulose ether is the longest, followed by redispersion emulsoid powder and bentonite. Starch ether can slightly, but not obviously, extend the setting time of cement mortar. Hydroxypropyl methyl cellulose ether has the greatest impact on the mechanical properties of ordinary dry-mixed mortar, followed by redispersion emulsoid powder, starch ether, and bentonite. As the water retention increases, the setting time of the mortar also increases. The use of water as a thickening material has a retarding effect on the mortar, increases the water-retention rate, and increases the retarding effect. Moreover, increasing the content of the chemical admixtures decreases the strength of cement mortar.

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Othman, Siti Hajar, Nurul Atiqah Najhah Tarmiti, Ruzanna Ahmad Shapi'i, Siti Marian Mohd Zahiruddin, Intan Syafinaz Mohammed Amin Tawakkal und Roseliza Kadir Basha. „Starch/banana pseudostem biocomposite films for potential food packaging applications“. BioResources 15, Nr. 2 (08.04.2020): 3984–98. http://dx.doi.org/10.15376/biores.15.2.3984-3998.

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Banana pseudostems (BP) are a promising cellulose source that remains underutilized despite its potential to be formed as biodegradable food packaging material. This work was directed towards utilizing BP waste in a powder form to produce potential food packaging material that is environmentally friendly. A solvent casting method was used to produce starch/BP films at different BP percentage compositions (0, 10, 20, 30, and 40 wt% on the dry basis of starch). The effects of different percentage compositions of BP in starch on the morphology, optical, mechanical, and barrier properties of the films were investigated. The optical and mechanical properties of the starch films decreased with the addition of BP. However, the mechanical and barrier properties of the films improved with the increase in BP composition. An optimum percentage composition of 40 wt% BP powder can be utilized to produce starch/BP films for potential food packaging application.

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Hebeish, A., M. H. El-Rafie, M. A. El-Sheikh und Mehrez E. El-Naggar. „Nanostructural Features of Silver Nanoparticles Powder Synthesized through Concurrent Formation of the Nanosized Particles of Both Starch and Silver“. Journal of Nanotechnology 2013 (2013): 1–10. http://dx.doi.org/10.1155/2013/201057.

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Green innovative strategy was developed to accomplish silver nanoparticles formation of starch-silver nanoparticles (St-AgNPs) in the powder form. Thus, St-AgNPs were synthesized through concurrent formation of the nanosized particles of both starch and silver. The alkali dissolved starch acts as reducing agent for silver ions and as stabilizing agent for the formed AgNPs. The chemical reduction process occurred in water bath under high-speed homogenizer. After completion of the reaction, the colloidal solution of AgNPs coated with alkali dissolved starch was cooled and precipitated using ethanol. The powder precipitate was collected by centrifugation, then washed, and dried; St-AgNPs powder was characterized using state-of-the-art facilities including UV-vis spectroscopy, Transmission Electron Microscopy (TEM), particle size analyzer (PS), Polydispersity index (PdI), Zeta potential (ZP), XRD, FT-IR, EDX, and TGA. TEM and XRD indicate that the average size of pure AgNPs does not exceed 20 nm with spherical shape and high concentration of AgNPs (30000 ppm). The results obtained from TGA indicates that the higher thermal stability of starch coated AgNPS than that of starch nanoparticles alone. In addition to the data obtained from EDX which reveals the presence of AgNPs and the data obtained from particle size analyzer and zeta potential determination indicate that the good uniformity and the highly stability of St-AgNPs).

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Salih, Sihama I., Qahtan A. Hamad, Safaa N. Abdul Jabbar und Najat H. Sabit. „Effects of Irradiation by UV- Acceleration on Mechanical Properties of Polymer Blends (Polyester: Starch)“. Al-Nahrain Journal for Engineering Sciences 21, Nr. 1 (10.02.2018): 147. http://dx.doi.org/10.29194/njes21010147.

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This work covers mixing of unsaturated polyester (un- polyester) with starch powders as polymer blends and study the effects of irradiation by UV-acceleration on mechanical properties of its. The unsaturated polyester was mixing by starch powders at particle size less than (45 µm) at selected weight fraction of (0, 0.5, 1, 1.5, 2, 2.5 and 3%). These properties involve ultimate tensile strength, modulus of elasticity, elongation percentage, flexural modulus, flexural strength, fracture toughness, impact strength and hardness. The results illustrate decrease in the ultimate tensile strength at and elongation percentage, while increasing modulus of elasticity, with increasing the weight ratio of starch powder to 3 % weight fraction, whereas the maximum value of hardness and flexural, impact properties happened at 1 % weight fraction for types of polymer blends.

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Lestari, Pramulani Mulya, und Septiana Tri Pamungkas. „The Chewable Tablet of Guava Leaves Extract (Psidium guajava L.) with Breadfruit Starch as Binder“. Jurnal Jamu Indonesia 4, Nr. 1 (29.03.2019): 8–16. http://dx.doi.org/10.29244/jji.v4i1.87.

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Breadfruit starch can be used as a binder on the chewable tablet because it consists of amylose and amylopectin which can increase the cohesiveness and make a good bond with the powder. Guava leaves extract can kill the bacterial growth of Streptococcus mutans so it can be served to prevent dental caries. This research aimed to know whether increased concentrations of breadfruit starch can affect the physical characteristics of the chewable tablet of guava leaves extract. The chewable tablets were formulated into 4 formulas with different concentration of mucilago breadfruit starch, such as 10%, 13%, 16% and 19%. Breadfruit starch as a binder obtained from an almost ripe the breadfruit and then was crushed and soaked to occur separation between water immersion and amylum, and then amylum was dried and made as mucilago and the mucilago was added into the formula. The result of the characteristic of starch, the powder was true breadfruit starch. The flowability and particle size distribution of granule was evaluated. Then, the granule was made into the chewable tablet. The research result showed that the increase of mucilago breadfruit starch concentration increased the hardness and decreased friability of chewable tablet.

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Wulandari, Cici, Budaraga IK, Wellyalina Wellyalina und Napassawan Liamnimitr. „PROXIMATE TEST AND ORGANOLEPTIC TEST ON THE CHARACTERISTICS OF THE MORINGA LAYER CAKE“. Andalasian International Journal of Agricultural and Natural Sciences (AIJANS) 1, Nr. 01 (06.10.2020): 9–17. http://dx.doi.org/10.25077/aijans.v1.i01.9-17.2020.

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Tradisional food from Indonesian that is a layer cake. Layer cake is usually made in with many variant colour. Beside that a layer cake made by rice powder, wheat powder, and starch powder. The taste is chewy, legit, and sweet making this cake liked by all circles. The purpose is to know a quality of layer cake with adding moringa leaf powder and adding moringa leaf powder with treatmet 5 test and 3 times test. The resull of analysis using anova with test and continve test Duncan’s New Multiple Range Test (DMNRT). The resull showing if adding moringa leaf power have infiuence with a layer cake quality and adding moringa leaf power in organoleptik fase into a layer cake is two percent (2%).

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SHITTU, TAOFIK A., MICHEAL A. IDOWU und OLASUMBO O. ADEMOSUN. „PRODUCTION OF DRIED STARCH-ALBUMEN POWDER: EFFECT OF TEMPERATURE AND STARCH ON SOME FUNCTIONAL PROPERTIES“. Journal of Food Processing and Preservation 34 (25.08.2009): 385–400. http://dx.doi.org/10.1111/j.1745-4549.2008.00259.x.

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Wu, Jihuai, Yueling Wei, Jianming Lin und Songbai Lin. „Study on starch-graft-acrylamide/mineral powder superabsorbent composite“. Polymer 44, Nr. 21 (Oktober 2003): 6513–20. http://dx.doi.org/10.1016/s0032-3861(03)00728-6.

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Dalonso, Nicole, und Carmen Lúcia de Oliveira Petkowicz. „Guarana powder polysaccharides: Characterization and rheological properties of starch“. Starch - Stärke 66, Nr. 9-10 (22.07.2014): 914–22. http://dx.doi.org/10.1002/star.201300289.

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Romano, P., O. Lyckfeldt und W. Khraisat. „Water based processing of iron powder utilising starch consolidation“. Powder Metallurgy 48, Nr. 2 (Juni 2005): 156–62. http://dx.doi.org/10.1179/003258905x37576.

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Awoyale, Wasiu, Lateef Oladimeji Sanni, Taofik Akinyemi Shittu, Abdulrazak Adesola Adebowale und Mojisola Olanike Adegunwa. „Development of an Optimized Cassava Starch-Based Custard Powder“. Journal of Culinary Science & Technology 17, Nr. 1 (05.12.2017): 22–44. http://dx.doi.org/10.1080/15428052.2017.1404534.

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Hai, Jing, Hai Yan Chen und Jiang Cheng. „Injection Molding Preparation and Film Formation Performance of Powders-Modified Polyethylene Biomass Carrier for Aerobic Process“. Advanced Materials Research 299-300 (Juli 2011): 470–74. http://dx.doi.org/10.4028/www.scientific.net/amr.299-300.470.

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A simple injection molding process was proposed for manufacturing polyethylene (PE) biofilm carrier composited with various powder additives including hydroxyapatite (HAP), starch, bagasse, activated carbon(AC) and magnetic powder(MP) as slow-released nutrients in wastewater biological treatment. The powders were also responsible for improving the hydrophilicity and biomass affinity of the carrier. Pre-attachment between powders and PE particle may achieve great improvement in flow ability of particle-powder mixture during injection molding process. The slow release rate of nutrients (mainly water-soluble starch) from the modified carrier to wastewater can be controlled by the amount of bagasse and activated carbon supplemented in the carrier. The contact angle of a water droplet on the polyethylene surface decreased from 80° to 59° after modification, and the period of biofilm formation on the modified carrier with acclimated sludge reduced from 7 days (on PE carrier without additives) to 4 days. The amount of attached biomass on the modified carrier was also found about twice as that on the common PE carrier. The strength performance test demonstrated the capability of long-term operation for the modified carrier in practical application.

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Ren, Feiyue, Xiaoxue Yang, Lili Wang und Sumei Zhou. „Effects of Different Processing Methods and Internal Components on Physicochemical Properties and Glycemic Index of Adzuki Bean Powder“. Foods 10, Nr. 8 (21.07.2021): 1685. http://dx.doi.org/10.3390/foods10081685.

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The estimated glycemic index (eGI) value of adzuki bean powder prepared by steamed cooking (SC), extruded cooking (EC) and roller cooking (RC) was studied comparatively. Results showed that RC had the highest eGI, with 80.1, and both EC and SC resulted in a lower eGI value of 70.0 and 49.7, respectively. Compared with the EC and RC methods, the SC method provided a more intact physical barrier for starch digestion, resulting in a less destroyed cell structure. As the essential components that form the cell wall, the study further investigated the effects of protein and fiber on physicochemical properties, in vitro starch digestibility and the eGI of adzuki bean powder processed with the SC method. Viscozyme and Protamax were used to obtain the deprotein and defiber samples. Results showed that the SC treatment with Viscozyme and Protamax, respectively, had significant effects on in vitro starch digestibility. The eGI of different samples were given as follows: steamed cooking adzuki bean powder (49.7) < deproteined adzuki bean powder (60.5) < defibered adzuki bean powder (83.1), which indicates that fiber may have a greater influence on the eGI than protein.

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Yuan, Ke, Libing Liao, Yunhua Wang, Zepeng Zhang, Daimei Chen und Chunwei Wang. „Individual and combined effects of modified starch, bentonite and their composite powder with HPMC on the performance of cement mortars“. Journal of Polymer Engineering 33, Nr. 6 (01.09.2013): 551–55. http://dx.doi.org/10.1515/polyeng-2012-0157.

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Abstract A series of acetate starch was synthesized and mixed with bentonite to prepare acetate starch/bentonite composite as a novel additive in order to improve the thixotropic property of cement mortar. The thixotropic index and water retention value of the fresh cement mortar containing acetate starch, bentonite, and acetate starch/bentonite composite, respectively, were measured with and without hydroxypropyl methyl cellulose ether (HPMC). Acetate starch with the degree of substitution (DS) of about 0.5 provided the largest increase in the thixotropic index of the cement mortar. Application of HPMC gave high water retention ability and viscosity to the mortar, but the thixotropic property was not improved. Adding acetate starch or starch/bentonite composite to the mortar can increase its thixotropic index, whereas no significant improvements on the water retention ability and viscosity of mortars were observed. By the combined use of acetate starch/bentonite composite with HPMC, the water retention value (WRV) of the mortar was as high as 98%, and its thixotropic index increased from 4.06 to 5.30, with a high value of viscosity.

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Stasiak, M., M. Molenda, I. Opaliński und W. Błaszczak. „Mechanical properties of native maize, wheat, and potato starches“. Czech Journal of Food Sciences 31, No. 4 (19.07.2013): 347–54. http://dx.doi.org/10.17221/348/2012-cjfs.

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The interrelations between moisture content and mechanical properties of dry and wet native starches of wheat, maize, and potato were investigated. Strength parameters of powders were tested using direct shear and ring shear tester. Carr indices and associated parameters were determined using a Hosokawa Powder Tester. Particle size distribution of powder was analysed using an Infrared Particle Sizer. Uniaxial compression test was conducted to determine the reaction of powder in a cylindrical probe to vertical load. Mechanical behaviour of the material was found to be changing with increasing moisture content. Mechanical behaviour of potato starch was found to be different from that of cereal starches, which may require different utilisation in some processes.  

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Muhamad, Norhamidi, und Hooman Abolhasani. „Development of a Starch-Based Binder in Metal Injection Molding“. Advanced Materials Research 83-86 (Dezember 2009): 24–30. http://dx.doi.org/10.4028/www.scientific.net/amr.83-86.24.

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A new starch-based binder as a natural polymer has been developed for metal injection molding (MIM). In this study tapioca starch which is cheap and readily available in Malaysia has been used as a binder which composed of starch, glycerol, linear low density polyethylene (LLDPE), citric acid and stearic acid. This developed binder system was mixed with 316 L stainless steel powder to prepare the feedstock at three different of powder loadings of 56, 57 and 58% vol. The rheological behavior of the binder and feedstock were evaluated at different temperatures using a capillary rheometer. The rheological behavior of binder shows less than 10 Pa s and the flow behavior index of the feedstocks were determined to less than 1, which indicates the flow characteristic is pseudo-plastic which is suitable for MIM process. Finally, among these three feedstocks, the feedstock of 57% vol. powder loading was selected and its viscosity values within expected shear rate range are less than 1000 Pa s.

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Gao, Qian Qian, Xue Jun Liu, Dong Jiao Wang, Jing Cheng und Li Li Zhou. „The Research of Ginseng Blueberry Chewable Tablet“. Advanced Materials Research 554-556 (Juli 2012): 1515–20. http://dx.doi.org/10.4028/www.scientific.net/amr.554-556.1515.

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This experiment was to develop a new kind of chewable tablet with white ginseng and blueberry. Firstly,get ginseng extracts from selective white ginseng by ultrasonic and freeze drying, and get blueberry juice powder from blueberries by squeezing and spray drying. Secondly, these two kinds of powder were pressed into tablets with starch, xylitol, etc as the auxiliary materials, and 40% alcohol as wetting agents. The optimum process conditions and formula were determined by single factor and orthogonal tests. The results show that the content of ginseng extracts, blueberry juice powder, starch, and 40% of ethanol should be 15%, 35%, 20%, 40% respectively in the best formula.

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Guo, Jing, Jiankun Wang, Guo Zheng und Xiaodong Jiang. „Optimization of the removal of reactive golden yellow SNE dye by cross-linked cationic starch and its adsorption properties“. Journal of Engineered Fibers and Fabrics 14 (Januar 2019): 155892501986526. http://dx.doi.org/10.1177/1558925019865260.

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In this study, cross-linked cationic starch was synthesized with corn starch as a raw material, epichlorohydrin as a cross-linked agent, and 3-chloro-2-hydroxypropyl trimethylammonium chloride as a cationic etherification agent, respectively, and it was characterized by X-ray photoelectron spectroscopy, X-ray powder diffraction, scanning electron microscopy, and thermogravimetry. The X-ray photoelectron spectroscopy results showed that cationic N appeared on the surface of cross-linked cationic starch; that is, a quaternary ammonium group was introduced. The X-ray powder diffraction results indicated that although the crystallinity of cross-linked cationic starch was lower than that of corn starch, cross-linked cationic starch still had an A-type crystal structure. The scanning electron microscopy results demonstrated that cross-linked cationic starch maintained a granular structure with small holes on the surface. Finally, the thermogravimetric results illustrated that the thermal stability of cross-linked cationic starch decreased. Before the adsorption experiment, the pHpzc of cross-linked cationic starch was obtained by the pH drift method, and it was 6.8. The optimal removal rate of reactive golden yellow SNE dye obtained by response surface methodology was 99.59%, and the optimal adsorption time, temperature, concentration of dye, and cross-linked cationic starch dosage were 14.3 min, 39°C, 100 mg/L, and 0.7 g/L, respectively. The adsorption of SNE by cross-linked cationic starch conformed to pseudo-second-order kinetics and the Langmuir isothermal adsorption model. The equilibrium adsorption capacity from pseudo-second-order kinetics and the maximum adsorption capacity from Langmuir isotherm model were 123.76 and 208.77 mg/g at 308.15 K, separately. In addition, this adsorption was an endothermic process.

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Ghazal, Mariam M., Nawfal A. A. H. Al-Hilfy und Haider I. Ali. „Production of Functional Soft Cheese and Studying its Chemical and Sensory Evaluation Properties“. Basrah J. Agric. Sci. 34, Nr. 1 (13.02.2021): 67–83. http://dx.doi.org/10.37077/25200860.2021.34.1.07.

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This study design to produce of functional cheese by these parameters: (A) control using raw bovine milk (without any additive), (B) Al-mudhish skim milk powder, (C) Landoz skim milk powder, (D) Regiliat skim milk powder, (E) Spray skimmed milk and 2% inulin and 2% modified starch were added to skim milk powder. The evaluation of chemical tests were performed including estimating moisture, protein, fat, carbohydrates, ash, total acidity percentage and pH, and sensory evaluation properties during refrigerated storage at the periods (1, 7, 14, 21 and 28) days. The results showed that the functional soft cheese from Landoz milk powder with (2% inulin and 2% modified starch) was have a higher percent of moisture and carbohydrates during the last period of storage (28) days compared to the control. The production of soft cheese by using Landoz milk powder with a mixture of prebiotic and probiotic has got the highest sensory features

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Wahab, Nor‘aini, Mohd Afian Omar, Nor Amalina Nordin und Rosliza Sauti. „The Potential of Starch as an Eco-Friendly Binder in Injection Moulding of 316L Stainless Steel for Medical Devices Applications“. Advanced Materials Research 911 (März 2014): 200–204. http://dx.doi.org/10.4028/www.scientific.net/amr.911.200.

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Two starch/wax based binders were formulated for metal injection moulding of 316L stainless steel. The formulations difffer in term of the starch type which substitute the backbone polyethelene. Feedstock having powder loading of the stainless steel powder up to 65 vol.% can be injection moulded successfully. Solvent debinding was performed in water at a temperature of 60°C for 3 hours and followed by immersion n-heptane for duration of 2 hours to remove the residual wax. The remaining binder was thermally extracted at 4500 with heating rate of 3°C/min, with no defects. The parts were then sintered in vacuum atmosphere within a temperature range of 1300°C to 1380°C. Approximately, 6.8 g/cm3theoretical density, hardness of 188.8 HV and tensile strength of 229.3 MPawere achieved for cassava starch/wax based binder while rice starch/wax based binder possessed 8.6g/cm3theoretical density, hardness of 385 HV and tensile strength of 462.1 MPa.

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Vongsurakrai, Varatus, und Saiyavit Varavinit. „Product of Modified Rice Starch (Era-Gel^®) and its Utilization in Pharmaceutical Industry“. Advanced Materials Research 93-94 (Januar 2010): 675–78. http://dx.doi.org/10.4028/www.scientific.net/amr.93-94.675.

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Pregelatinized rice starch (Era-Gel ® ) was prepared by physical modification. The degree of pregelatinization was controlled to an appropriate level. With the addition of small amount of pregelatinized rice starch , a slightly sticky, damped mass was obtained. Pregelatinized rice starch was tested for a potential use as a tablet filler or binder in wet granulation process. Two hydrochlorothiazide formulations were compared. One formulation comprised HCTZ and PRS; the powder mixture was damped with water. The other formulation contained HCTZ, lactose as filter, corn starch as binder and also as tablet disintegrant. In the later case, the powder mixture was damped with starch paste. Both granulations were compressed on an instrumented tablet press. The tablets were evaluated for their hardness, friability, disintegration, and also dissolution. The results indicated that both formulations were comparable in all aspects. It dissolution was found to exceed the USP requirement. It was demonstrated that three components, i.e. , lactose, corn starch paste, and disintegrant could be replaced with only one single material, PRS. It was also found that PRS could perform well in acetaminophen tablet formulation which was a high-dose drug and tended to cap; however, small amount of extra binder and disintegrant were needed. It could be seen that PRS had a great potential use in wet granulation process.

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Shen, Hui You, Li Ren Fan, Bao Ming Pan und Ji Qing Song. „Preliminary Study of Preparation and Properties of Activated K-Feldspar-Filled Hydrogel Materials“. Advanced Materials Research 734-737 (August 2013): 2141–44. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.2141.

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This study preliminarily evaluated water absorbency and potassium release property of a novel hybrid hydrogel material as a potential hydrogel K-fertilizer. This hybrid hydrogel material was prepared by introducing activated K-feldspar powder into starch-graft-PAA hydrogel networks via aqueous solution polymerization. The mineral phases were characterized by X-ray diffraction (XRD) patterns and the water absorbencies of the hybrid hydrogel along with potassium release property were preliminarily studied. The results indicate that the optimum extraction rate of potassium is 92.14% using the additive of NaCl at 950°C and 2h. The hydrogel was prepared at the amount of starch, cross-linker, initiator, and neutralization degree were 20%, 0.04%, 0.6%, and 80%, respectively. The hybrid hydrogel was synthesized by mixing hydrogel with activated powders. The results show the water absorbency of the hybrid hydrogel is 169g/g and the potassium ion release percentage is 8.0% of activated powder per gram.

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Prihandoko, Bambang, Achmad Subhan und Slamet Priyono. „Electrochemical Behavior of Li₄Ti₅O₁₂ under In Situ Process of Sintering and Surface Coating with Cassava Powder“. Advanced Materials Research 789 (September 2013): 21–27. http://dx.doi.org/10.4028/www.scientific.net/amr.789.21.

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Anode active material Li4Ti5O12/C has an advantage to increase the life time and the ability to charge and discharge lithium batteries. An experiment was carried out to make Li4Ti5O12/C more cheaper and simple process. Preparation of Li4Ti5O12/C was carried out with stoichiometric composition of raw materials TiO2 (Merck) and LiOH.H2O (Germany) under powder metallurgy method. After mixing and calcinations cassava starch as a source of carbon black coating could be mixed under comparison 1:1 with calcinations powders. Pyrolisis process was done in - situ by the sintering process at temperature variation, i.e. 800, 850 and 900°C for 1 hour. XRD test results indicated the presence of anatase TiO2 entire sample. The best results of powder Li4Ti5O12/C with in situ process under 850°C for 1 hour had conductivity in the order of 10-4S/cm and capacity round 5mAh/g. Carbon coating of cassava starch that is well identify in the black color of sample powder and EDX analysis, gave influence on electrochemical graphics of oxidation and reduction by cyclic voltammeter. The working voltage of Li4Ti5O12/C is in general 1.55V.

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Kuttigounder, Dhanalakshmi, Jaganmohan Rao Lingamallu und Suvendu Bhattacharya. „Turmeric Powder and Starch: Selected Physical, Physicochemical, and Microstructural Properties“. Journal of Food Science 76, Nr. 9 (20.10.2011): C1284—C1291. http://dx.doi.org/10.1111/j.1750-3841.2011.02403.x.

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