کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
21187 43210 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Biodegradation of polyvinyl alcohol by Flammulina velutipes in an unsubmerged culture
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Biodegradation of polyvinyl alcohol by Flammulina velutipes in an unsubmerged culture
چکیده انگلیسی

ABSTRACTTo examine the biodegradation of polyvinyl alcohol (PVA), Flammulina velutipes (Enokitake) was cultivated in both liquid and quartz sand cultures. After incubation, discoloration of an iodide solution was observed in the filtrate recovered from the quartz sand culture, whereas discoloration was not observed in the filtrate recovered from the liquid culture. Gel permeation chromatography showed that the PVA recovered from the quartz sand culture was depolymerized and yielded low-molecular-weight portions. Infrared and ultraviolet spectrometry indicated that there was formation of carbonyl groups, and NMR analysis showed that the syndiotactic portions of PVA were preferably attacked. Based on these results, an unsubmerged cultivation of F. velutipes was considered suitable for the biodegradation of PVA, probably because the mycelium was sufficiently developed to produce PVA-degrading enzymes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Bioscience and Bioengineering - Volume 112, Issue 1, July 2011, Pages 58–62
نویسندگان
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