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L-arabitol is used in the food and pharmaceutical industries. It can be secreted by genetically modified Saccharomyces cerevisiae carrying the genes responsible for pentose metabolism in yeast cells. The process of the biotransformation of L-arabinose to arabitol is highly dependent on culture conditions. The aim of this investigation was to use statistical response surface methodology (RSM) for optimization...
One of the main problems limiting the economic production of ethanol from lignocellulosic biomass is D-xylose fermentation. In a medium containing glucose and xylose, it is preferable to achieve conversion with glucose fermenting yeast like S. cerevisiae and xylose fermenting yeast like P. stipitis. In order to resolve this problem, it is better to use respiratory deficient mutants. In this research,...
The degradation of lignocellulose to provide fuels and chemicals is a subject of intensive investigation.THis paper cutlines the current biotechnological methods and discisses the problems of cellulose and hemicellulose bioconversion to ethanol.The relationships between physical and chemical properties of lignocellulose and enzymatic hydrolysis are shown.The applications of genetic engineering to...
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