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Title of Journal: World J Microbiol Biotechnol

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Abbravation: World Journal of Microbiology and Biotechnology

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Springer Netherlands

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DOI

10.1016/0021-8928(61)90057-0

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1573-0972

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Effects of hydroxypropylβcyclodextrin on the gro

Authors: Lanyu Cui Yanbing Shen Xiaodong Guo Yizhong Wang Yu Zheng Jianmei Luo Min Wang
Publish Date: 2012/06/13
Volume: 28, Issue: 8, Pages: 2723-2729
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Abstract

Cyclodextrin has been found to be an attractive novel solubilizer due to its unique material properties Absidia coerulea is widely used in steroid bioconversion The effects of hydroxypropylβcyclodextrin HPβCD on the growth morphology and steroidconverting activity of A coerulea CICC 40302 were systematically studied HPβCD affected A coerulea growth resulting in changes in its spore morphology and mycelial morphology It induced an increase in the spore germination rate and a decrease in cell biomass at the stationary phase Optical microscopy revealed that HPβCD altered the mycelial morphology and reduced the pellet compactness of A coerulea A convenient and feasible computing method was used to measure pellet compactness and it demonstrated that the compactness degree of the pellet decreased as HPβCD increased which could be attributed to the modification of the physical properties of the fermentation medium Moreover the changing of mycelial morphology influenced steroidconverting activity The results showed that HPβCD had multiple concentrationdependent effects on A coerulea cells HPβCD in the proper concentration range holds great potential as a biocompatible solubilizerThis work was supported by the National Natural Science Foundation of China Grant No 21076158 the Program for New Century Excellent Talents in University Grant No NCET080911 and the National High Technology Research and Development of China Grant No 2011AA02A211

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