期刊
BIOTECHNOLOGY PROGRESS
卷 39, 期 4, 页码 -出版社
WILEY
DOI: 10.1002/btpr.3344
关键词
bacterial cellulose; Hestrin-Schramm medium; hydrocolloids; microstructure
In this study, various hydrocolloids were added to the Hestrin-Schramm medium to improve the production performance and microstructure of bacterial cellulose (BC) by Gluconacetobacter entanii. After 14-day fermentation, medium supplemented with 0.1% carboxymethyl cellulose and 0.1% xanthan gum resulted in the highest BC yield with dry BC content of 9.82 and 6.06 g/L, respectively. The modified BC films exhibited a characteristic three-dimensional network structure with dense and low porosity, as well as larger fiber size compared to the control.
Bacterial cellulose (BC) is a biopolymer with applications in numerous industries such as food and pharmaceutical sectors. In this study, various hydrocolloids including modified starches (oxidized starch-1404 and hydroxypropyl starch-1440), locust bean gum, xanthan gum (XG), guar gum, and carboxymethyl cellulose were added to the Hestrin-Schramm medium to improve the production performance and microstructure of BC by Gluconacetobacter entanii isolated from coconut water. After 14-day fermentation, medium supplemented with 0.1% carboxymethyl cellulose and 0.1% XG resulted in the highest BC yield with dry BC content of 9.82 and 6.06 g/L, respectively. In addition, scanning electron microscopy showed that all modified films have the characteristic three-dimensional network of cellulose nanofibers with dense structure and low porosity as well as larger fiber size compared to control. X-ray diffraction indicated that BC fortified with carboxymethyl cellulose exhibited lower crystallinity while Fourier infrared spectroscopy showed characteristic peaks of both control and modified BC films.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据