کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1387153 | 982550 | 2010 | 8 صفحه PDF | دانلود رایگان |
The aim of the present study was to investigate the structural modifications and physico-mechanical properties of the BC sheets produced in static cultures using a newly developed fed-batch strategy and a new medium (waste from beer fermentation broth; WBFB). Characteristics of these BC samples were compared with BC sheets produced in batch and fed-batch cultivations using chemically defined medium (CDM). FT-IR and 13C NMR spectra showed almost same results for all the BC samples. XRD analysis revealed that BC produced in fed-batch cultivation using CDM had larger crystallite size than other BC samples. Crystallinity index of BC from fed-batch cultivations was higher than batch cultivation. BC from WBFB had slightly lower degree of polymerization than BC from CDM. Mechanical strength of BC from fed-batch cultivation using CDM was highest. WHC and WRR for BC from WBFB were greater than BC from CDM.
Journal: Carbohydrate Polymers - Volume 82, Issue 1, 2 August 2010, Pages 173–180