Relevant bibliographies by topics / Chlorella pyrenoidosa Growth

Academic literature on the topic 'Chlorella pyrenoidosa Growth'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Chlorella pyrenoidosa Growth"

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Sun, Jia, Guo Ping Yu, and Yue Li. "The Uranium Biosorption by Chlorella Pyrenoidosa and its Physiological Responses to Uranium." Advanced Materials Research 610-613 (December 2012): 40–43. http://dx.doi.org/10.4028/www.scientific.net/amr.610-613.40.

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The effect of uranium at various concentration on the growth of Chlorella pyrenoidosa and the resistance of Chlorella pyrenoidosa to uranium were investigated in this paper. The results showed that the content of O2- and the activity of CAT arose when the concentration of uranium varied at the range of 0.1 to 1.0 mg/L. Uranium had no negative effect on the growth of Chlorella pyrenoidosa at the concentration of 0.1 to 0.5 mg/L, however, had positive effect to some extent. And the rise of the content of O2- and the activity of CAT was followed by rapidly returning to the normal level. The uranium at the concentration of 1.0 mg/L prolonged the lag period of the growth of Chlorella pyrenoidosa. The growth of Chlorella pyrenoidosa arose negatively, the content of O2- also arose to an unreturnable level and the activity of CAT was lower than CK when the concentration of uraniumm varied at the range of 5.0 to 10.0 mg/L. The uranium biosorption rate by Chlorella pyrenoidosa reached to the highest value of 70.43%when concentration of uraniumm was 0.5 mg/L. Chlorella pyrenoidosa is resistant to uranium of low concentration（≤1.0mg/L）and its biosorption rate is rather high, which indicated good prospect in its future application.
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Guo, Hancheng, and Zhiguo Fang. "Effect of light quality on the cultivation of chlorella pyrenoidosa." E3S Web of Conferences 143 (2020): 02033. http://dx.doi.org/10.1051/e3sconf/202014302033.

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Effect of light quality, including red light, blue light, white light, red and blue mixing light with 8:1, 8:2 and 8:3, on the growth characteristics and metabolite accumulation of chlorella pyrenoidosa was conducted based on light emitting diode (LED). Results showed that chlorella pyrenoidosa grew best under blue light, and the optical density, specific growth rate and biomass of chlorella pyrenoidosa was about 2.4, 0.10 d-1 and 6.4 g·L-1, respectively, while the optical density of chlorella pyrenoidosa was between 1.0 and 1.7, specific growth rate was between 0.06-0.10 d-1 and biomass was between 2.7 and 3.8 g·L-1 under other light quality after 30 days of cultivation. The optical density, specific growth rate and biomass of chlorella pyrenoidosa was approximately 2.05 times, 1.33 times and 2.06 times under blue light than red light, respectively. Moreover, Red and blue mixing light was conducive to the synthesis of chlorophyll a and carotenoids of chlorella pyrenoidosa, and blue light could promote the synthesis of chlorophyll b. Chlorophyll a and carotenoids content of chlorella pyrenoidosa was 13.5 mg·g-1and 5.8 mg·g-1 respectively under red and blue mixing light with 8:1, while it was 8.4 mg·g-1 and 3.6 mg·g-1 respectively under blue light. Red and blue mixing light was more conducive to protein and total lipid content per dry cell of chlorella pyrenoidosa. Protein and total lipid content was 489.3 mg·g-1 and 311.2 mg·g-1 under red and blue mixing light with 8:3, while it was 400.9 mg·g-1 and 231.9 mg·g-1 respectively under blue light.
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Zhong, Yun Na, and Ya Lei Zhang. "Influence of Contaminative Bacteria during Cultivation of Chlorella pyrenoidosa in Soybean Processing Wastewater." Advanced Materials Research 666 (February 2013): 27–31. http://dx.doi.org/10.4028/www.scientific.net/amr.666.27.

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Bacteria pollution is easy to happen during the treatment of wastewater by Chlorella pyrenoidosa (C. pyrenoidosa). And it is the key technical problem in the engineering applications. It is necessary to find out the influence of bacteria during the process, and then formulate the control project of bacteria pollution. This paper mainly studied on the relationship between C. pyrenoidosa and bacteria, during the treatment of bean products wastewater. Comparing those relationship between three stains of bacteria and C. pyrenoidosa, we found that three stains of bacterial all have adverse impact on the growth of chlorella and adipose accumulate. And those three stains of bacterial have no definite influence on C. pyrenoidosa. According to the above results, the control of bacteria during the wastewater-treatment by C. pyrenoidosa should be based on the type of wastewater and the follow-up using of chlorella.
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Zhang, Zhan Ning, and Jian Sheng Cui. "The Effects of Pb2+ Stress on the Growth and Physiological Characteristics of Chlorella pyrenoidosa." Advanced Materials Research 1073-1076 (December 2014): 147–53. http://dx.doi.org/10.4028/www.scientific.net/amr.1073-1076.147.

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In the Pb2+ stress experiments, the concentrations of Pb2+ were 1, 5, 10, 50, and 80 mg/L respectively, BG11 culture medium was served as the control. The results showed that Pb2+ affected markedly on the growth and physiological characteristics of chlorella pyrenoidosa under certain concentration. As the exposure time, chlorella pyrenoidosa biomass is restrained gradually. Pb2+ also have significant inhibition to effect chlorophyll content and have an effect relationship with the malondialdehyde content of chlorella pyrenoidosa . Lead concentrations and the soluble protein content are time effect relationship . And the longer the inhibitory effect becomes more obvious. Superoxide dismutase (sod) activity increased first then decreased with the increase of the concentration of Pb2+.
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Fu, Hai Yan, Ming Hou, Tian Chai, Guo He Huang, Peng Cheng Xu, and Ya Li Guo. "Allelopathy Effects of Various Higher Landscape Plants on Chlorella pyrenoidosa." Advanced Materials Research 518-523 (May 2012): 23–28. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.23.

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In this paper, the effects of the culture water of three types of higher landscape plants Typha latifolia L, Canna indica L and Iris tectorum Maxim on the growth of Chlorella pyrenoidosa have been investigated. The results show that Iris culture water promoted the growth of Chlorella pyrenoidosa, which was facilitated at low contentions and inhibited at high concentrations by the culture water of Canna indica L. Moreover, inhibitory effect of the culture water of Typha latifolia L was the strongest with the rate of 50.7%. Differences of the effects of the three plants on the chlorophyll a contents of Chlorella pyrenoidosa were significant (P Iris tectorum Maxim was utilized, whereas the content was lowest at merely 41% of that of the control group when treated with 80% of the culture water of Typha latifolia L.
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Rismiarti, Asih, Hermin Pancasakti Kusumaningrum, and Muhammad Zainuri. "Karakterisasi Dan Identifikasi Molekuler Fusan Hasil Fusi Protoplas Interspesies Chlorella pyrenoidosa dan Chlorella vulgaris Menggunakan 18SrDNA." Bioma : Berkala Ilmiah Biologi 18, no. 2 (August 8, 2016): 30. http://dx.doi.org/10.14710/bioma.18.2.30-40.

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Chlorella pyrenoidosa is a unicellular green algae that grows in fresh water with carotenoids consisting of β-carotene, α-carotene, anthaxanthin, neoxanthin, zeaxanthin and lutein. C. vulgaris usually it lives in sea water with carotenoids, chlorophyll, tocopherol, ubiquinone and proteins. The quality of them is improved by protoplast fusion and identified further using moleculer analysis. This study aims to find out the characterization and identification of molecular fusan that is obtained from interspecies C. pyrenoidosa and C. vulgaris protoplast fusion process using 18SrDNA. Both C. pyrenoidosa and C. vulgaris are combined by protoplast fusion and then they were performed the isolation of DNA with CTAB modification method, followed by PCR gradient using primers 18S Chlorella and performed DNA sequencing. The result show that there are different characters between masterplan and fusan based on growth of fresh water and sea water medium. The success frequency of fusan as a result from protoplast fusion in the fresh water media is 21% and 6% for sea water medium. The results of the alignment between fresh water fusan and C. vulgaris masterplan from GeneBank shows that the base sequence homology is 93% C. pyrenoidosa masterplan from GeneBank is 90%. The result of molecular identification towards the sequence of fresh water fusan bases shows that there is a kinship relationship with the masterplan of C. pyrenoidosa 18S Chlorella and Chlorosphaera klebsii microalgae compared with some other species from Chlorophyta group with similarity value as many as 91%. It shows that the high variety genetic is based on variations of the base sequence and has a kinship with other species in the Chlorophyta group. Keywords : Chlorella pyrenoidosa, Chlorella vulgaris, Protoplast Fusion, DNA Sequensing, 18SrDNA.
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Megawati, Megawati, Astrilia Damayanti, Zuhriyan Ash Shiddieqy Bahlawan, Erma Nurunia, Fatkhulil Jannah Eva Agustina, Fidyawati Fidyawati, and Hanifah Hanifah. "GROWTH RATE AND BIOCHEMICAL CHARACTERIZATION OF CHLORELLA PYRENOIDOSA CULTIVATED IN SUGARCANE VINASSE MEDIUM." ASEAN Engineering Journal 12, no. 2 (June 1, 2022): 127–34. http://dx.doi.org/10.11113/aej.v12.17156.

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Chlorella pyrenoidosa is a microalgae species that contains proteins, carbohydrates, amino acids, carotenoids, vitamins, and minerals. Due to its compounds, the researchers have attempted to make bioethanol using C. pyrenoidosa through a biorefinery approach. However, the ratio of bioethanol production towards the raw material needs of C. pyrenoidosa is still small because of its low carbohydrate content. Thus, in this research, vinasse is used as its growth medium to increase the carbohydrate content. The research objective is to study the effect of vinasse volume ratio and nutrient addition towards the size, optical density, carbohydrate composition, growth rate of the C. pyrenoidosa, and its evaluation as a biorefinery raw material. C. pyrenoidosa was cultivated in freshwater and vinasse (20 and 30% v/v) in mini ponds, equipped with lighting using 3280 lumens lamp, aeration with air, and Guillard as nutrient. In vinasse, the cultivation was done with and without periodic nutrient additions. The microalgae cell size was increased if cultivated in vinasse and given Guillard addition, which is 3.0-3.6 mm (in freshwater), 4.1-8.6 mm (in vinasse with nutrient every 2 days), 4.8-6.3 mm (in vinasse without nutrient every 2 days). The microalgae carbohydrate composition cultivated in vinasse was sharply increased compared to in freshwater. Thus, C. pyrenoidosa cultivated in vinasse is very potential for bioethanol production. Specific growth of C. pyrenoidosa in vinasse with nutrient is faster (0.087 day-1) than without nutrient (0.023 day-1) and in freshwater (0.062 day-1). Cultivated C. pyrenoidosa contains proteins, lipids, and carbohydrates, so it has the potential of becoming a biorefinery raw material.
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Kusumaningrum, Hermin Pancasakti, Muhammad Zainuri, Indras Marhaendrajaya, Agus Subagio, Widianingsih Widianingsih, Hadi Endrawati, Annisa Fadillah, Muhammad Iskandar Zulkarnain, Yuvita Muliastuti, and Imam Misbach. "Effect of Silver Nano Particle Microalgae Chlorella pyrenoidosa and Dunaliella salina on Growth and Survival of Penaeus monodon Larvae." Buletin Oseanografi Marina 10, no. 2 (April 29, 2021): 105–11. http://dx.doi.org/10.14710/buloma.v10i2.35483.

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Penaeus monodon is one of the most important farmed crustaceans. Its also known as Asia Tiger Shrimp because its carapace and abdomen are transversely banded with red and white. The use of synthetic antibiotic in aquaculture had caused problems related to health and environmental safety. Chlorella pyrenoidosa and Dunaliella salina are photosynthetic microalgae. Silver nano particle in microalgae C. pyrenoidosa and D. salina had synthesized and showed their growth stability. They offer a potency to be exploited to supported growth and survival of shrimp larvae. The objective of the study was the application of silver nano particle in microalgae C. pyrenoidosa and D. salina on P. monodon larvae. The research methodology was carried out by making microalgae C. pyrenoidosa and D. salina containing silver nano particle and used as feed of shrimp larvae. Observations were made on the growth and survival of shrimp larvae compared to both microalgae and common feed. The results showed that the P. monodon larvae have the higher growth and survival rate with microalgae C. pyrenoidosa at the beginning of their growth compared to D. salina. However, microalgae without nanosilver and common feed showed a better result for growth and activity of shrimp larvae.
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Tian, Jian Ru, Guo Li Chen, Guang Feng Kang, and Xiu Ping Zheng. "Bioavailability of Phosphorus Fractions for Incepting of Chlorella pyrenoidosa in the Lower Reaches of the Hanjiang River in China." Advanced Materials Research 183-185 (January 2011): 3–7. http://dx.doi.org/10.4028/www.scientific.net/amr.183-185.3.

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Using total phosphorus (TP) concentrations to estimate eutrophication risk is problematic for management purposes, as only some forms of P are biologically available for phytoplankton growth. This study estimated the bioavailability of P fractions of water and the floodplain sediment in the lower reaches of the Hanjiang River in China using multiple regressions. And the effects of concentrations of P fractions on algal growth were also studied. The results showed that the total soluble P (TSP) and the particulate P (PP) can well predict the growth of Chlorella pyrenoidosa in water samples. And the exchangeable P (exch-P) and the P bound to Al, Fe, and Mn oxides and hydroxides (Fe/Al–P) were adapted to predicting the growth of Chlorella pyrenoidosa in the floodplain sediment samples.
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Li, Q., Y. Y. Wu, and Y. D. Wu. "Effects of fluoride and chloride on the growth of Chlorella pyrenoidosa." Water Science and Technology 68, no. 3 (August 1, 2013): 722–27. http://dx.doi.org/10.2166/wst.2013.279.

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To compare the toxic action of fluoride (F−) and chloride (Cl−) on freshwater algae, effects of F− and Cl− on Chlorella pyrenoidosa growth were investigated by determination of the algal biomass and model analysis. Results showed that the exponential growth equation (D = D0 + aebT) may be used to fit the relationship between cell density (D) of C. pyrenoidosa and exposure time (T), but F− and Cl− have significantly different effects on parameters a (initial quantity of algae at the exponential growth stage) and b (growth constant). In the range of experimental concentrations, F− inhibited C. pyrenoidosa growth, and percent inhibition increased with increasing exposure time and F− concentration. By contrast, Cl− either inhibited or enhanced C. pyrenoidosa growth depending on Cl− concentration and exposure time, and percent inhibition increased with increasing Cl− concentration but decreased with increasing exposure time. The dose–response equation: I = min + (max − min)/(1 + 10lgEC50−lgC) may be used to fit the relationship between percent inhibition (I) and F− or Cl− concentration (C); however, F− was distinct from Cl− in terms of effects on parameter ‘min’. The EC50 values of F− and Cl− ranged from 118 to 170 mg/L and 19.73 to 36.33 g/L, respectively; the latter is much higher than the former. Thus F− has higher toxicity than Cl−.
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Dissertations / Theses on the topic "Chlorella pyrenoidosa Growth"

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Nespoulous, Claude. "Caractérisation de la prise d'oxygène à la lumière chez deux végétaux modèles : influence d'un régulateur de croissance sur les échanges gazeux." Aix-Marseille 2, 1986. http://www.theses.fr/1986AIX22047.

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CHEN, TZU-LIN, and 陳姿陵. "Study The Effects of Chlorella pyrenoidosa Extract on Antioxidation, Cell Growth and Photoprotection." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/yedt3d.

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碩士
弘光科技大學
化妝品應用研究所
106
Ultraviolet (UV) light is ubiquitous in our environment. Excessive absorption of UV will generate free radicals that cause injury or inflammation of the skin and scalp, and lead to aging or even cancer. The main purpose of this study was to investigate the antioxidative effects of extract from Chlorella pyrenoidosa and to investigate the effects of the extract on the growth of mouse fibroblast (3T3) and human hair follicle dermal papilla cells (HFDPC) and the mechanism of protection against ultraviolet radiation. The results showed that the extract of C. pyrenoidosa had good antioxidant activity including ability to scavenge superoxide radicals (EC50 0.22%), reducing power (EC50 4.03%) and ability to chelate ferrous ions (EC50 2.11%). The mechanisms of C. pyrenoidosa extract that can promote the growth of 3T3 and HFDPC cells may be relate to the activation of Akt and ERK. C. pyrenoidosa extract also has a significant protective effect on the cytotoxicity induced by different UVB energies, but it inhibits the activation of ERK. It also has a good effect on the cell wound healing test, and its effect may be related to the induction of matrix metalloproteinases (MMPs) activity, especially in UV-irradiated cells, MMP-2 activity was significantly increased. In summary, the extract of C. pyrenoidosa with antioxidant capacity, promoting cell growth and reduce cell damages of 3T3 and HFDPC. It will be further explored the detailed mechanism of these effects and develop into antiphototoxic or antiaging cosmetics.
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Book chapters on the topic "Chlorella pyrenoidosa Growth"

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Rawat, Shweta, and Sanjay Kumar. "The Feasibility Study of Green Microalgae Assisted Coal Mine Effluent Desalination." In Proceedings of the Conference BioSangam 2022: Emerging Trends in Biotechnology (BIOSANGAM 2022), 255–67. Dordrecht: Atlantis Press International BV, 2022. http://dx.doi.org/10.2991/978-94-6463-020-6_25.

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AbstractCarbon-neutral sustainable approaches are highly demanding in the coal energy sector. Coal mine effluent disposal is a severe challenge with crucial concern issues of salinity hazard and heavy metal contamination due to long-duration water and coal interaction. The medium to the high salinity of coal mine effluent leads towards irrigation unsuitability due to the negative impact upon infiltration and permeability of nutrients from the soil to plant. Focusing on the international irrigation water quality standards given by the Food and Agriculture Organization (FAO) of the United Nations, most coal mine effluents are considered negatively impacting crops, soil fertility, groundwater, and aquatic life. Therefore, the current study investigates the direct cultivation suitability of Chlorella pyrenoidosa to simultaneously treat coal mine effluent for salinity removal and biomass production. Initially, C. pyrenoidosa culture adaptation in varying concentrations of coal mine effluents (25%–100%) in coal mine effluent, which are collected from two different points of coal mine named as coal mine effluent 1 (CME1) and coal mine effluent 2 (CME2). Evaluating C. pyrenoidosa growth kinetics, it was observed that the doubling time extended from 2.25 days (100% BG-11 as a medium; control) to 4.33 days (100% CME as a medium). Interestingly, the highest value for biomass production was 1.78 ± 0.12 g/ L with 25% CME 1 supplemented with essential growth nutrients; this value lies near 100% BG11 supplemented growth, 1.81 ± 0.05 g/L. In the current study, taking salinity removal as a prime concern, 100% utilization of CME-2 in place of BG-11 medium was very significant for salinity reduction from 4.80 ± 0.50 mS/cm (initial) to 0.98 ± 0.02 mS/cm (final) during 14 days batch growth. In continuation of that, the significant finding was salinity reduction of both samples (50% and 75% sample) to the level of 0.7 mS/ cm, which lies under the FAO guidelines for irrigation. Present findings also revealed an alternative to conventional processes, i.e., thermal and membrane desalination. Microalgae-assisted desalination is a novel, energy-efficient, eco-sustainable, cost-effective, and long-term operational approach. It has good potential to treat medium to sub-optimal salinity of coal mine effluent coupled with high-value biomass production.
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Grobbelaar, Johan U., Bernd M. A. Kroon, Tineke Burger-Wiersma, and Luuc R. Mur. "Influence of medium frequency light/dark cycles of equal duration on the photosynthesis and respiration of Chlorella pyrenoidosa." In The Daily Growth Cycle of Phytoplankton, 53–62. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2805-6_3.

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