Relevant bibliographies by topics / Lyophilisation

Academic literature on the topic 'Lyophilisation'

Author: Grafiati
Published: 4 June 2021
Last updated: 22 June 2024

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Journal articles on the topic "Lyophilisation"

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Komissarov, Alexander V., Dmitry N. Bibikov, Oksana A. Volokh, Sergey A. Badarin, Nataliya V. Sinitsyna, Nataliya I. Kostyleva, and Aleksey K. Nikiforov. "Lyophilisation of inactivated vaccines." PROCEEDINGS OF UNIVERSITIES APPLIED CHEMISTRY AND BIOTECHNOLOGY 3, no. 9 (2019): 403–19. http://dx.doi.org/10.21285/2227-2925-2019-9-3-403-419.

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Nyanga, Loveness K., Martinus J. R. Nout, Eddy J. Smid, Teun Boekhout, and Marcel H. Zwietering. "Yeasts preservation: alternatives for lyophilisation." World Journal of Microbiology and Biotechnology 28, no. 11 (July 7, 2012): 3239–44. http://dx.doi.org/10.1007/s11274-012-1118-y.

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Wolff, Eric, and Henri Gibert. "Développements technologiques nouveaux en lyophilisation." Journal of Food Engineering 8, no. 2 (January 1988): 91–108. http://dx.doi.org/10.1016/0260-8774(88)90057-x.

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Mihelčič, Alenka, Klemen Lisjak, and Andreja Vanzo. "Accelerated Solvent Extraction of Phenols from Lyophilised Ground Grape Skins and Seeds." Beverages 9, no. 1 (January 6, 2023): 4. http://dx.doi.org/10.3390/beverages9010004.

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The efficient extraction of phenols from grapes is an important step for their reliable quantification. The aim was to optimise the lyophilisation process and the extraction of phenols from grape skins and seeds. The phenol extraction yield from lyophilised tissues was investigated with different accelerated solvent extraction (ASE) operating conditions. Skins and seeds were separated from frozen berries and lyophilised without being ground. The weight loss during lyophilisation was followed daily. Phenols were extracted from lyophilised, cryo-ground seeds and skins with ASE at room temperature and 10.3 MPa using 80% aqueous acetone and 60% aqueous methanol. The effects of ASE operational parameters (the number of extraction cycles (ECs) and static time (ST) duration) were investigated. The yield of extracted phenols was evaluated spectrophotometrically by determining total phenolic index at 280 nm (TPI). The weight of skins and seeds significantly dropped after 24 h of lyophilisation and continued to decrease, although not significantly, up until the 9th day. The optimal lyophilisation time was estimated to be 3 days and 5 days for skins and seeds, respectively. The phenol extraction yield was significantly affected after changes of ASE conditions. Based on TPI, the optimal ASE conditions were as follows: (i) lyophilised seeds—eight ECs with 10 min ST using aqueous acetone and then four ECs with 20 min ST using aqueous methanol; (ii) lyophilised skins—eight ECs with 1 min ST using aqueous acetone and then one EC with 20 min ST using aqueous methanol.
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Prosapio, Valentina, and Estefania Lopez-Quiroga. "Freeze-Drying Technology in Foods." Foods 9, no. 7 (July 13, 2020): 920. http://dx.doi.org/10.3390/foods9070920.

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Béal, C., F. Fonseca, A. Thomas, and Mireca Marin. "Caractérisation et lyophilisation de matrices fromagères." Sciences des Aliments 26, no. 1 (February 28, 2006): 89–102. http://dx.doi.org/10.3166/sda.26.89-102.

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Ravnik, J., M. Ramšak, M. Zadravec, B. Kamenik, and M. Hriberšek. "Experimental and stochastic analysis of lyophilisation." European Journal of Pharmaceutics and Biopharmaceutics 159 (February 2021): 108–22. http://dx.doi.org/10.1016/j.ejpb.2020.12.011.

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Kurcheva, S. A., A. G. Koshkidko, I. V. Zharnikova, D. V. Rusanova, A. A. Semircheva, O. L. Startseva, E. V. Zhdanova, M. M. Kurnoskina, and I. S. Tyumentseva. "Development of a protective lyophilisation medium and conditions to stabilise the erythrocyte diagnostic preparation of tularaemia immunoglobulin." Biological Products. Prevention, Diagnosis, Treatment 22, no. 2 (June 2, 2022): 196–207. http://dx.doi.org/10.30895/2221-996x-2022-22-2-196-207.

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Liquid erythrocyte diagnostic preparations have a practical disadvantage; i.e., long-distance transportation involving possible non-compliance with cold-chain requirements may result in a complete loss of biological activity. A lyophilisation technology is necessary to ensure that the preparations retain their original properties for a long time. The aim of the work was to develop a protective medium and conditions for lyophilisation to stabilise the erythrocyte diagnostic preparation of tularaemia immunoglobulin. Materials and methods: Gelatin, thiourea, trehalose, sucrose, dextran, and Tween 80 were used as excipients for protective media. The authors used nine strains of homologous and heterologous microorganisms of different genera and species to control the lyophilised diagnostic preparation sensitivity and specificity. Evaluation of the main stability-related quality attributes (appearance of the dried preparation, loss on drying, solubility, appearance after reconstitution, appearance after settling, sensitivity, specificity) considered the temperatures specific to the climatic zones where the in vitro diagnostics is intended to be marketed and used. Results: The authors developed protective stabilising media with different compositions, used them in freeze-drying of the preparation and carried out control testing. The most promising was the lyophilisation medium containing a smaller amount of ingredients —6% of dextran, 0.06% of Tween 80 and up to 0.01% of sodium azide—as it was the simplest one to prepare and ensured complete preservation of the quality attributes. The authors carried out practical evaluation of lyophilisation procedures, and the 12–14-hour procedure proved to be the most cost-effective. Conclusions: The results of long-term, or real time, and accelerated stability testing of the lyophilised diagnostic preparation demonstrated the possibility of two-year storage at a labelled temperature of 2–8 °C, as well as at elevated and low temperatures of 30±2 °С and –18 °С, respectively. The tests showed no negative effects of the temperatures on the controlled quality attributes.
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Radwan-Pragłowska, J., M. Piątkowski, Ł. Janus, D. Bogdał, and D. Matysek. "Biodegradable, pH-responsive chitosan aerogels for biomedical applications." RSC Advances 7, no. 52 (2017): 32960–65. http://dx.doi.org/10.1039/c6ra27474a.

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Palazzese, L., D. A. Anzalone, P. Toschi, and P. Loi. "40 Comparison of slow and rapid freezing in freeze-dried ram spermatozoa." Reproduction, Fertility and Development 32, no. 2 (2020): 146. http://dx.doi.org/10.1071/rdv32n2ab40.

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Semen lyophilisation is an interesting technique that might be a cheap alternative to long-term storage in liquid nitrogen. The first significant result of this method was achieved by Wakayama and Yanagimachi in the 1998 and demonstrated, for the first time, the birth of healthy mouse pups from epididymal freeze-dried (mouse) spermatozoa. The authors follow the lyophilisation technique, commonly used in the pharmaceutical and food industries, namely, deep freezing, which requires direct immersion of the semen sample into liquid nitrogen before vacuum drying. In this work, we focused on the freezing phase to improve and make the technique more reliable. We compared two protocols: 1) rapid freezing, where the semen is plunged directly into liquid nitrogen (LN group), and 2) slow freezing, where the sample is frozen with a freezing rate of 1°C min−1 until −50°C (SL group). Then, both frozen samples were lyophilized. Subsequently, after an interval ranging between 1 and 3 months, dry spermatozoa from LN and SL groups were used for intracytoplasmic sperm injection (ICSI), and the embryo development was evaluated at 24h (2-cell stage) and 7 days (expanded blastocyst) post-ICSI. Moreover, acrosome integrity was evaluated with Pisum sativum agglutinin (PSA) staining on part of the semen, immediately after freezing. The LN-group semen showed the acrosome completely melted, whereas the SL group showed better integrity of the acrosome, which was comparable to that of the normal frozen (vital) spermatozoa. At 24h post-ICSI the number of cleaved embryos in the SL group was higher than in the LN group (42/100 (42%) vs. 19/75 (25.3%), SL and LN, respectively; P=0.0253). The blastocyst rate 7 days after ICSI in the SL group was higher (7/100 (7%) than that in the LN group (2/75 (2.7%); P=0.0238). Our data show that lyophilisation can be conveniently achieved in ram spermatozoa without liquid nitrogen, thus simplifying the procedure. These data support the idea that lyophilisation might be a valuable and cheaper alternative to liquid nitrogen for long-term storage of ram semen.
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Dissertations / Theses on the topic "Lyophilisation"

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Wolff, Eric. "Cinétique et modélisation de la lyophilisation sous vide et de la lyophilisation à pression atmosphérique." Toulouse, INPT, 1988. http://www.theses.fr/1988INPT040G.

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Deux procedes sous vide et a pression atmospherique en lit fluidise d'adsorbant sont compares. Ils sont appliques a la lyophilisation de produits biologiques: pomme de terre, lait, bacteries lactiques. Une modelisation basee sur les equations de transfert de matiere et de chaleur permet de bien representer la cinetique. Pour le procede sous vide la pression operatoire est un parametre important. A pression atmospherique les isothermes d'adsorptions permettent de mesurer l'influence de l'adsorbant. La lyophilisation a pression atmospherique permet de reduire les couts de production
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Wolff, Eric. "Cinétique et modélisation de la lyophilisation sous vide et de la lyophilisation à pression atmosphérique." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37619259z.

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Pollet, Pascale. "Etats de l'eau dans les lyophilisats." Paris 5, 1990. http://www.theses.fr/1990PA05P191.

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Louis, Jean Michel. "Protocole de qualification d'un lyophilisateur." Paris 5, 1989. http://www.theses.fr/1989PA05P079.

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Abdelwahed, Wassim. "Lyophilisation des nanovecteurs de type nanocapsules, nanosphères et nanoémulsions : étude fondamentale de la formulation et du procédé de lyophilisation." Lyon 1, 2006. http://www.theses.fr/2006LYO10138.

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L'objectif de ce travail a été d'étudier les différents aspects de la formulation et du procédé de lyophilisation de vecteurs colloïdaux de type nanocapsules, nanosphères et nanoémuslions. Cette méthode industrielle de séchage améliore la stabilité à long-terme des vecteurs colloïdaux. Dans une première approche, nous avons étudié les différents paramètres de la formulation des nanocapsules préparées par la méthode d'émulsification-diffusion de solvant et stabilisées par la poly (alcool de vinyle) (PVA). Il a été trouvé que la concentration de PVA et l'ajout d'un cryoprotecteur sont les paramètres les plus importants pour la réussite de la lyophilisation de nanocapsules. La seconde approche a consisté à étudier le mécanisme de stabilisation des nanocpasules par les différents type d'excipients pendant les différentes étapes de la lyophilisation et pendant le stockage. D'après les résultats, la vitrification des cryoprotecteurs et lyoprotecteurs semble être un facteur essentiel pour le maintien des nanocapsules lors de la lyophilisation. D'autre part, la cristallisation de ces excipients peut induire l'agrégation de nanocapsules. L'optimisation du cycle de lyophilisation doit assurer la diminiution de sa durée sans provoquer la collapse ou la fusion de lyophilisat. Différents paramètres du procédé de lyophilisation ont été évalués et se sont révélés efficaces pour atteindre cet objectif : le traitement thermique par le recuit, la pression totale dans le lyophilisateur et la température de l'étagère de lyophilisateur, et enfin, la position des flacons dans la chambre de lyophilisation. Dans la dernière partie de la thèse, nous avons étudié la lyophilisation de deux nouveaux systèmes colloïdaux pour le traitement du cancer de la prostate : des immunonanoémulsions et des immunonanosphères
The objective of this work was to study the different aspects of the formulation and of the freeze-drying process of different types of colloidal vectors : nanocapsules, nanospheres and nanoemulsions. This industrial method of drying can improve the long-term stability of colloidal particles. Firstly, we have studied the different parameters of the formulation of nanocapsules prepared by the emulsification-diffusion method and stabilized by the poly (vinyl alcohol). The results demonstrated that the concentration of PVA and the addition of cryoprotectant are the most important parameters for the success of nanocapsules freeze-drying. Secondly, we have studied the mechanism of stabilization of nanocapsules by amorphous excipients during freeze-drying and storage. The vitrification of cryoprotectants and lyoprotectants seems necessary for the preservation of nanocapsules. On the orther hand, the crystalisazation of these excipients can induce the aggregation of nanoscapsules. The optimization of freeze-drying cycle must ensure the reduction of its duration without inducing the fusion or the collapse of the freeze-dried product. Many freeze-drying process parameters have been evaluated and found efficient for the process optimization, as the thermal treatment by annealing, the pressure and shelf temperature of the freeze-dryer, and finally, the vial position within the lyophilization chamber
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Choi, Mi-Jung. "Optimisation de la lyophilisation de vecteurs colloïdaux submicroniques." Lyon 1, 2006. http://www.theses.fr/2006LYO10159.

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Ce travail a pour but d'étudier le séchage de dispersions aqueuses de vecteurs submicroniques de nature différente par lyophilisation. Dans un premier temps, les résultats obtenus avec les nanocapsules de polymère (Polycaprolactone) montrent que les suspensions restent stables si une vitesse de congélation lente est adoptée, et ce jusqu'à une température de congélation de –30°C. L'étape de congélation est primordiale pour les systèmes de type nanocapsules, elle peut entraîner la rupture des membranes et donc la fuite du contenu. Dans la deuxième partie, nous avons tout d'abord étudié l'encapsulation de liposomes par des polymères afin de limiter la capture des liposomes par le système des phagocytes et de pouvoir ainsi prolonger la durée de libération du principe actif incorporé dans les liposomes. Cette encapsulation a été possible avec des copolymères aminoalkyl methacrylates et plus particulièrement Eudragit® E100 soluble en phase aqueuse. Cette formulation a ensuite été lyophilisée en ajoutant du saccharose et un polysaccharide (-carraghénane) comme cryoprotecteurs. L'encapsulation par le polymère l'Eudragit® E n'a pas pu à elle seule protéger les liposomes durant la lyophilisation, l'ajout d'un cryoprotecteur reste nécessaire. Dans une dernière partie, nous avons lyophilisé des particules vésiculaires lipidiques obtenues par émulsion double de type E/H/E. La taille des globules est affectée par la vitesse de congélation et la température de sublimation. Une diminution des diamètres moyens et une perte de la structure interne ont été constatées quand une vitesse de congélation rapide est appliquée. Les cryoprotecteurs de faible masse moléculaire, en particulier le tréhalose, se sont révélés plus efficaces pour conserver la structure interne et donc le composé hydrophile encapsulé dans les particules lipidiques. Ces résultats ont prouvé l'importance de l'optimisation des conditions du procédé de lyophilisation et plus particulièrement la vitesse de congélation ainsi que du choix des excipients utilisés pour préserver la stabilité des systèmes dispersés à base de polymères ou de lipides
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Zhai, Suling. "Model based studies of the lyophilisation of biological materials." Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614784.

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DEISS, GERALDINE. "Optimisation du cycle de lyophilisation de l'hormone de croissance." Strasbourg 1, 1993. http://www.theses.fr/1993STR15046.

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Chouvenc, Pierre. "Optimisation du procédé de lyophilisation du complexe lipoprotéïque DC-Chol/Uréase." Lyon 1, 2004. http://www.theses.fr/2004LYO10026.

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Après une brève présentation du procédé de lyophilisation et des différents phénomènes de transfert de chaleur et de matière mis en jeu, l’importance de l’état vitreux lors de la lyophilisation de produits pharmaceutiques est exposée. L’étude bibliographique présente un état de l’art sur la formulation et la lyophilisation des liposomes et des protéines pharmaceutiques. Nos travaux ont d’abord porté sur la mise au point au point de la formulation puis sur l’optimisation du procédé de lyophilisation du complexe lipoprotéique DC-Chol/uréase, vaccin potentiel contre la bactérie Helicobacter Pylori. Les propriétés thermophysiques de la matrice optimale sélectionnée ont été déterminées (diagramme d’état). Puis, deux nouvelles méthodes originales de caractérisation de la structure des matrices congelées ont été mises au point : la micro-imagerie par résonance magnétique nucléaire et la microscopie optique en chambre froide. Cette dernière méthode nous a permis de quantifier l’effet du recuit sur la taille des cristaux de glace et d’optimiser le protocole de congélation. Par ailleurs, un nouveau modèle d’analyse de montée en pression (méthode PRA) a été validé pour le suivi en ligne de la température du produit, puis a été adapté aux lyophilisateurs pilotes possédant une vanne de séparation à fermeture lente
After a short description of the heat and mass transfer phenomena occurring during the freeze-drying process, the importance of glassy state during pharmaceuticals freeze-drying was presented. A state of the art of liposomes and proteins formulation and freeze-drying was then set out. The DC-Chol/Urease complex, a potential vaccine again Helicobacter Pylori bacteria, was formulated and its freeze-drying process was optimised. The thermophysical properties (state diagram) of the optimal matrix selected were determined. Then, two original methods of frozen structure characterization (Cold chamber microscopy and NMR micro-imaging) were developed and applied to study the effect of annealing on average ice crystals size and to optimize the freezing step. A new pressure rise analysis model (PRA model) was validated to monitor the product temperature, and then adapted to freeze-dryers equipped with a slow motion separating valve. Finally, the kinetics of the secondary drying period were investigated
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Schreiber, Ralf H. "Stabilisierung parenteraler Öl-in-Wasser-Emulsionen durch Cryoprotektion und Lyophilisation /." [S.l. : s.n.], 1995. http://www.gbv.de/dms/bs/toc/185730515.pdf.

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Books on the topic "Lyophilisation"

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Suherman, Phe Man. A novel dielectric technique for monitoring the lyophilisation of globular proteins. Leicester: De Montfort University, 2001.

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Franks, Felix. Freeze-drying of pharmaceuticals and biopharmaceuticals. Cambridge: Royal Society of Chemistry, 2007.

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Tony, Auffret, ed. Freeze-drying of pharmaceuticals and biopharmaceuticals: [principles and practice]. Cambridge: RSC Pub., 2008.

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Krokida, Magdalini. Thermal and Nonthermal Encapsulation Methods. Taylor & Francis Group, 2017.

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Krokida, Magdalini. Thermal and Nonthermal Encapsulation Methods. Taylor & Francis Group, 2017.

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Krokida, Magdalini. Thermal and Nonthermal Encapsulation Methods. Taylor & Francis Group, 2017.

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Krokida, Magdalini. Thermal and Nonthermal Encapsulation Methods. Taylor & Francis Group, 2017.

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Krokida, Magdalini. Thermal and Nonthermal Encapsulation Methods. Taylor & Francis Group, 2019.

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Thermal and Nonthermal Encapsulation Methods. Taylor & Francis Group, 2017.

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Fissore, Davide, Roberto Pisano, and Antonello Barresi. Freeze Drying of Pharmaceutical Products. Taylor & Francis Group, 2019.

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Book chapters on the topic "Lyophilisation"

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Arndt, T. "Lyophilisation." In Lexikon der Medizinischen Laboratoriumsdiagnostik, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49054-9_1995-1.

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Arndt, T. "Lyophilisation." In Springer Reference Medizin, 1549. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-48986-4_1995.

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Ó’Fágáin, Ciarán. "Storage and Lyophilisation of Pure Proteins." In Methods in Molecular Biology, 179–202. Totowa, NJ: Humana Press, 2010. http://dx.doi.org/10.1007/978-1-60761-913-0_10.

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Kißling, Patrick A., Dario Cotardo, Tabea von Bronk, Ludger Lohaus, and Nadja C. Bigall. "Comparison of Water-Isopropanol Replacement and Lyophilisation for Hydration Stop of Cementitious Suspensions." In RILEM Bookseries, 610–18. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-22566-7_71.

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Woog, H. "Galenische Entwicklung von Lyophilisaten mit therapeutischen Humanproteinen." In Nephrologie, 17–25. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-76708-1_2.

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Declomesnil, S., and A. Fructus. "Développement d'émulsions sèches par lyophilisation d'émulsions H/E déposées sur un support." In Formulation cosmétique, 11–16. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0144-2.c003.

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Bano, Gabriele, Riccardo De-Luca, Emanuele Tomba, Fabrizio Bezzo, and Massimiliano Barolo. "A Stochastic Modelling Approach to Describe the Effect of Drying Heterogeneity in the Lyophilisation of Pharmaceutical Vaccines." In Computer Aided Chemical Engineering, 55–60. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-823377-1.50010-0.

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Conference papers on the topic "Lyophilisation"

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Jribi, Sarra, Hela Gliguem, Andras Nagy, Nagy Gabor Zsolt, Lilla Szalóki-Dorkó, Zoltan Naàr, Ildiko Bata-Vidàcs, Sarra Marzougui, Zsuzsanna Cserhalmi, and Hajer Debbabi. "Evolution of “Chili” Tunisian landrace durum wheat sprouts properties after drying." In 21st International Drying Symposium. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/ids2018.2018.7377.

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Sprouting is a green technology contributing in improving cereals and pulses nutritional properties. However sprouts have a high water content limiting their shelf-life. This research focused on the impact of drying technology on physico-chemical, functional and nutritional properties of Tunisian landrace durum wheat (Triticum durum)“Chili” sprouts for their use as a functional ingredient. Three technologies were evaluated: lyophilisation, micro-wave vacuum drying and oven drying at 50°C. Sprouted seeds flour properties were significantly (p<0.05) affected by the drying methods used. Lyophilisation led to the highest preservation of bioactive compounds followed by micro-wave vacuum drying. The way of evolution of physico-chemical and functional properties depended on drying method used. Keywords: Sprouts; drying; functional properties; bioactive compounds.
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Exner, Ginka K., and Ivan S. Akrabov. "Chicken breast quality assessment by lyophilisation, differential scanning calorimetry and electric impedance spectroscopy." In 10th Jubilee International Conference of the Balkan Physical Union. Author(s), 2019. http://dx.doi.org/10.1063/1.5091363.

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