نتایج جستجو برای: 30 glycerol
تعداد نتایج: 533948 فیلتر نتایج به سال:
Development of protocols for cryopreservation microalgae Chlorococcum dissectum Korshikov and Dunaliella salina Teodoresco requires selection effective cryoprotectants their concentrations. One the stages choosing optimal concentrations is determining degree toxicity cells at equilibration stage. Solutions dimethyl sulfoxide, ethylene glycol, ethanol, glycerol (5–30%) modified PVS1 PVS2 (50 75%...
the potential and performance of various gram-negative, gram-positive and archaeal wild type microorganisms, and bacterial mixed cultures, as well as the application of genetically engineered strains as whole-cell biocatalysts for glycerol-based polyhydroxyalkanoate production are analyzed and assessed. this encompasses the comparison of growth and polyhydroxyalkanoate accumulation kinetics, th...
The purpose of our study was to evaluate the potential inhibition of adipose tissue mobilization by lactate. Eight male subjects (age, 26. 25 +/- 1.75 yr) in good physical condition (maximal oxygen uptake, 59.87 +/- 2.77 ml. kg-1. min-1; %body fat, 10.15 +/- 0.89%) participated in this study. For each subject, two microdialysis probes were inserted into abdominal subcutaneous tissue. Lactate (1...
BACKGROUND Enzymatic biodiesel production by transesterification in solvent media has been investigated intensively, but glycerol, as a by-product, could block the immobilized enzyme and excess n-hexane, as a solution aid, would reduce the productivity of the enzyme. Esterification, a solvent-free and no-glycerol-release system for biodiesel production, has been developed, and two-step catalysi...
The conversion of glycerol into lactic acid in alkaline medium using heterogeneous catalysts has been highlighted and proved to be an efficient alternative the conventional fermentative route. This work investigated production from copper obtained hydrotalcite-like precursors a continuous flow reaction system effect different loading on catalytic behaviors terms yield selectivity acid. were syn...
Food packaging extensively uses plastic films and containers of petroleum-based polymers for their excellent functional properties and competitive price. Plastic packaging has become a central focus of waste reduction efforts, particularly in aesthetic terms of damage to flora and fauna. Presently, consumers require greater quality and longer shelf lives for their foodstuffs, while they ...
Biodiesel production using novel glycerol and potassium carbonate-based catalysts has not been developed under the Taguchi technique. This study aims to determine most influential parameter in biodiesel from refined bleach-deodorized palm oil (RBDPO) DES K2CO3-Glycerol as catalyst. The raw material was subjected transesterification at desired reaction parameters estimated by orthogonal 16-run (...
Introduction: Mixotrophic microalgae systems have great potential for bioenergy production and wastewater treatment. Anaerobic-treated wastewater supplemented with carbon can improve biomass yield and quality, as it presents low carbon content. Alternative carbon sources in microalgae cultivation, such as glycerol, are essential for minimizing the economic and environmental impacts caused by bi...
The aerosol survival of Escherichia coli JEPP, a particularly sensitive strain, has been studied in a nitrogen atmosphere (> 99.9 yo) when sprayed from suspension in solutions of sodium glutamate or glycerol, and collected into phosphate buffer with or without M-sucrose. The response caused by changes in relative humidity (RH) to 30% and I O O ~ ~ before collection was also examined, These two ...
The objective of this study was to investigate the effect of different levels of glycerol on Dallagh rams semen characteristics in pre and post freezing conditions. Semen samples were collected from 4 healthy and mature rams using an electro ejaculator, were mixed with Tris extender in a ratio of 1:4 semen and assessed at 5°c. 0.5 ml of straws were filled with diluted semen and kept above liqui...
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