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| Registros recuperados: 11 | |
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| Zhang,Pingping; Zhou,Wei; Wang,Peng; Wang,Li; Tang,Mingli. |
| Chitosanase production of Gongronella sp. JG cells immobilized in calcium alginate gel and polyurethane foam was compared with that of the free cells, there was a 60% increase in the enzyme yield (2429 U/L) compared to the highest yield obtained from free cells (1513 U/L). The optimal immobilization parameters (concentrations of sodium alginate, calcium chloride, bead inoculums, bead diameter, etc) for the enhanced production of chitosanase were determined as: sodium alginate 2% (w/v), 0.1 M calcium chloride, inoculum 10 mL beads to 100 mL production media and 2.7 mm bead diameter. Maximum chitosanase production was achieved with initial pH of 5.5 and temperature of 30 ºC. The alginate beads had well stability, retained 85% ability of enzyme production... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chitosanase production; Gongronella sp. JG; Cell immobilization; Sodium alginate. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100029 |
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| Wissam,Zam; Samer,Housheh. |
| The objective of the current study was to encapsulate flaxseed oil extracted from finely grounded flaxseed powder and determined for its fatty acids content by GC/FID. Ionotropic gelation method was used to form beads containing 40% flaxseed oil with vitamin E being used as an antioxidant agent. The study employed calcium chloride solution as crosslinking agent with a combination of sodium alginate and salep. The effect of polymer concentrations and calcium chloride concentration on the morphology, entrapment efficiency and oil release was studied. The encapsulation efficiency reached 93.46 ± 0.064% using 0.6% of salep and 2% sodium alginate with 0.3M calcium chloride gelling solution. In SGF medium, the matrix released only about 28.56% of the entrapped... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Flaxseed oil; Sodium alginate; Salep; Beads. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100578 |
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| Cartes R,Priscila; Castellanos B,Hermes; Ríos L,Darcy; Sáez C,Katia; Spierccolli H,Scarlette; Sánchez O,Manuel. |
| Somatic and zygotic embryos from mature seeds of rauli-beech, Nothofagus alpina (Poepp. & Endl.) Oerst., were encapsulated in different artificial endosperms in order to generate a cover that fulfills the function of nourishment and protection of the embryos, facilitating their later germination. The content of sodium alginate varied by 4%, 3%, and 2%, as did the immersion time in calcium chloride (CaCl2), which acts as complexing agent. The artificial endosperm components of the Murashige and Skoog medium (MS) were added, supplemented with 0.5 mg L-1 indolacetic acid (IAA), 0.5 mg L-1 naphthaleneacetic acid (NAA), 2 mg L-1 6-benzylaminopurine (BAP) and 30 g L-1 sucrose. The germinative behaviors of encapsulated somatic and zygotic embryos were... |
| Tipo: Journal article |
Palavras-chave: Rauli-beech; Somatic embryogenesis; Synthetic seed; Sodium alginate. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000100014 |
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| Jensen,Thomas E; Crang,Mary C; Crang,Richard F.E.. |
| Two laboratory devices have been designed for experimental use in biosorption studies involving the uptake and controlled release of elements from encapsulated living cells of microorganisms. The first device is an alginate bead maker capable of producing uniform (1.5 mm diameter) sodium alginate beads with encapsulated microorganisms. The second device is a flow-cell that can subject the encapsulated microorganisms to changing fluids, streaming gaseous microaerophyllic conditions, and which also allows for samples of fluid and beads to be extracted at any time during changing experimental conditions. Both devices are novel and simple in their design, and enable improved accuracy and precise handling of encapsulated specimens with minimal labour and... |
| Tipo: Journal article |
Palavras-chave: Bead maker; Biosorption; Flow-cell; Sodium alginate. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582008000400014 |
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| Rodrigues,Antonio Augusto Marques; Silva,Silvanda de Melo; Dantas,Ana Lima; Silva,Antonio Fernando da; Santos,Leonardo da Silva; Moreira,Dayse das Neves. |
| Abstract The aim of this work was to evaluate the effect of jackfruit seed starch-based (S) coatings, added to chitosan and alginate on the physiology and maintenance of quality of cold stored ‘Paluma’ guavas, followed by transfer to the room condition. The design was the completely randomized, in a 4x2 factorial scheme, in 4 replications, with 4 coatings (dispersion of S - 4%; S 2% + chitosan - 2% (SC); S - 2% + alginate - 2% (SA); and the uncoated control), in 2 environments (refrigerated (10±2 °C e 80±2% RH) with transfer to room condition (25±3 °C e 75±4% HR)), on the 16th and 20th day of cold storage. The SC and SA coatings were efficient in reducing the respiratory rate in fruits during 10 days at room condition. The SC coating delayed fruit... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artocarpus heterophyllus; Fruit waste; Chitosan; Sodium alginate; Fruit quality. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000200303 |
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| Registros recuperados: 11 | |
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