نتایج جستجو برای: sacharomyces cerevisiae
تعداد نتایج: 39295 فیلتر نتایج به سال:
In this researchsaccharomyces cerevisiae (baker’s yeast) was used as a cheap, readily accessible, selective, efficient, and green bio-catalyst in a chemo selective reduction of carbonyl group to hydroxyl group. In this green procedure three substrates e.g. (3-(3-nitrophenyl)aziridin-2-yl)-1-phenyl-methanone, pyruvate ester, and 2-acetyl-γ-butyrolactone were r...
The Biosorption property of S. cerevisiae for chromium uptake was investigated in an immobilized cell bioreactor. Saw dust was utilized as the solid bed in the reactor. Adsorption of S. cerevisiae on saw dust obeys a first order reaction kinetic up to 6 hours. The immobilized biomass particles are porous and exist in the new generation of biological adsorbent. Chromium biosorption was studied i...
Background and Objectives: Biosurfactants are amphiphilic molecules produced by microorganisms that due to surfactant activity, have several applications in different industries such as cleaning, emulsification, foaming and dispersion. The aim of this study was to investigate the effect of biosurfactant extracted from saccharomycess cerevisiae on biofilm formation of staphylococcus aureus (PTC...
Background and purpose: Mannoprotein in the cell wall of Saccharomyces cerevisiae is a glycoprotein with antimicrobial and antitoxin effects. In this research antifungal properties of gelatin based edible coating containing Saccharomyces cerevisiae mannoprotein were tested against Aspergillus flavus growth and the inhibitory effect on pistachio kernel. Materials and methods: Antifungal prope...
BACKGROUNDS: Optimization of microbial compositions and load in live food during the process of bioencapsulation is one of the most important concerns in aquaculture, as it can promote the growth and feeding parameters of fish larvae. OBJECTIVES: The aim of this study was to determine the growth and feeding performance of Persian sturgeon larvae fed with bioencapsulated D. magna with Saccharomy...
in this researchsaccharomyces cerevisiae (baker’s yeast) was used as a cheap, readily accessible, selective, efficient, and green bio-catalyst in a chemo selective reduction of carbonyl group to hydroxyl group. in this green procedure three substrates e.g. (3-(3-nitrophenyl)aziridin-2-yl)-1-phenyl-methanone, pyruvate ester, and 2-acetyl-γ-butyrolactone were reduced to their corresponding reduce...
Selection of potential non-Sacharomyces probiotic yeasts from food origin by a step-by-step approach
in this study, phenolic compounds of evening primrose leaves (oenothera biennis) were extracted with aceton 70%, ethanol 70% and methanol 70%. total phenolic content of aceton extract was significantly higher than the ethanolic and methanolic extracts. extracts were tested for their antimicrobial activity against lactobacillis plantarum and saccharomyces cerevisiae, using micro broth dilution m...
background and purpose: microorganism-based synthesis of nanostructures has recently been noted as a green method for the sustainable development of nanotechnology. nowadays, there have been numerous studies on the emerging resistant pathogenic bacteria and fungal isolates, the probable inability of bacteria and fungi to develop resistance against silver nanoparticles’ (snps) antibacterial, ant...
سبوس گندم با دارا بودن فیبر و املاح بالا از خواص تغذیهای سودمندی برخوردار است، اما بهدلیل حضور ترکیب ضد تغذیهای بهنام اسید فیتیک کاربرد محدودی دارد. در این پژوهش اثر سه آغازگر مختلف تهیه شده از S. cerevisiae PTCC 5052 و L. Plantarum PTCC 1058، درجه حرارت (25، 30 و 35 درجه سانتیگراد) و طول زمان تخمیر (0،2، 4، 6 و 8 ساعت) بر مقدار pH ، اسیدیته و غلظت اسید فیتیک سبوس گندم استریل شده بررسی گر...
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