糠醛
化学
食品科学
黄原胶
野油菜黄单胞菌
产量(工程)
单糖
发酵
水解
有机化学
生物转化
葡萄糖醛酸
木糖
多糖
抗氧化剂
生物化学
催化作用
材料科学
流变学
冶金
复合材料
基因
作者
Yan Kang,Panyu Li,Xiaotong Zeng,Xi Chen,Yi Xie,Yu Zeng,Yongkui Zhang,Tian Xie
标识
DOI:10.1016/j.carbpol.2019.04.018
摘要
Lignocellulosic-like materials are potentially low-cost fermentation substrates, but their pretreatment brings about by-products. This work investigated the effects of furfural on xanthan gum (XG) production, and product quality was evaluated by structure, viscosity and antioxidant capacities. Xanthomonas campestris maintained steady polysaccharide yield (above 13 g·L-1) with enhanced cell growth at low furfural concentrations (below 3.2 g·L-1). The products were verified as XG by FT-IR, XRD, NMR and monosaccharide analysis. Moreover, they were found to have reduced acetyl, rising pyruvate and up-to-down glucuronic acid groups as increasing furfural concentration. Furthermore, XG product with 1 g·L-1 furfural addition showed the best hydroxyl scavenging effects, though reducing powers presented no variation. It was demonstrated that furfural, the common hydrolysis by-product, was not necessarily an inhibitor for fermentation, and an appropriate amount of furfural was beneficial to XG production with steady yield and good quality.
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