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Control of Molecular Weight Distribution of the Biopolymer Pullulan Produced by the Fungus Aureobasidium pullulans

机译：真菌aureobasidium pullulans产生的生物聚合物普鲁兰多糖的分子量分布控制

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This report summarizes one section of this study, the evaluation of environmental conditions and their influence on the biopolymer pullulan molecular weight distribution and yield. Films, fibers, and chemical derivatives made from these different molecular weight products, and the characterization of these materials will provide the bases for another report. In order to determine optimum growth conditions for the control of molecular weight distribution of extracellular pullulan, preliminary studies utilized cell suspensions of nine strains of Aureo basidium pullulans. One strain, NRRL-Y 6220 A. pullulans, was selected for further study. Carbon and nitrogen sources, along with phosphate concentration were evaluated for their effect on pullulan yield and molecular weight distribution. Batch systems, scale-up batch, and including solvents, extraction time, etc., were also studied. Pullulan biopolymer products with weight average molecular weights from 100 thousand to 4 million, with a dispersity of around two, were produced. The evaluation of chemical/physical properties of defined molecular weight fractions of pullulan is now under investigation.

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Wiley, B. J.; Arcidiacono, S.; Sousa, S.; Mayer, J. M.; Kaplan, D. L.;
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年度 1987
页码 p.1-29
总页数 29
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Fungi; Molecular weight; Polysaccharides; Carbon; Chemical derivatives; Chemical properties; Distribution; Environments; Extraction; Growth(General); Nitrogen; Nutrients; Optimization; Physical properties; Solvents; Phosphates;

机译：真菌;分子量;多糖;碳;化学衍生物;化学性质;分布;环境;提取;生长（一般）;氮;营养;优化;物理性质;溶剂;磷酸盐;

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2. Optimization of conditions for the production of pullulan and high molecular weight pullulan by Aureobasidium pullulans [J] . Ji-Hyun Lee, Jeong-Hwa Kim, Sung-Koo Kim, Biotechnology Letters . 2001,第10期

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3. Production of high molecular weight pullulan by Aureobasidium pullulans HP-2001 with soybean pomace as a nitrogen source [J] . Seo HP, Son CW, Chung CH, Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies . 2004,第3期

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5. Identification of a pullulan gene in the polymorphic fungus Aureobasidium pullulans [D] . Oller, Anna R. 2000

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Control of Molecular Weight Distribution of the Biopolymer Pullulan Produced by the Fungus Aureobasidium pullulans

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