title: Production of nano bacterial cellulose from waste water of candied jujube-processing industry using Acetobacter xylinum.
abstract: The work is aimed to investigate the suitability of waste water of candied jujube-processing industry for the production of bacterial cellulose (BC) by Gluconacetobacter xylinum CGMCC No.2955 and to study the structure properties of bacterial cellulose membranes. After acid pretreatment, the glucose of hydrolysate was higher than that of waste water of candied jujube. The volumetric yield of bacterial cellulose in hydrolysate was 2.25 g/L, which was 1.5-folds of that in waste water of candied jujube. The structures indicated that the fiber size distribution was 3-14 nm in those media with an average diameter being around 5.9 nm. The crystallinity index of BC from pretreatment medium was lower than that of without pretreatment medium and BCs from various media had similar chemical binding. Ammonium citrate was a key factor for improving production yield and the crystallinity index of BC.
authors: School of Textiles, Tianjin Polytechnic University, Tianjin 300387, China; Key Laboratory of Advanced Textile Composites (Tianjin Polytechnic University), Ministry of Education, Tianjin 300387, China. Electronic address: lizheng_nx@163.com.
authors: Zheng
authors: Z
authors: Li
authors: School of Textiles, Tianjin Polytechnic University, Tianjin 300387, China; Key Laboratory of Advanced Textile Composites (Tianjin Polytechnic University), Ministry of Education, Tianjin 300387, China.
authors: Lifen
authors: L
authors: Wang
authors: School of Textiles, Tianjin Polytechnic University, Tianjin 300387, China; Key Laboratory of Advanced Textile Composites (Tianjin Polytechnic University), Ministry of Education, Tianjin 300387, China.
authors: Jiachuan
authors: J
authors: Hua
authors: School of Textiles, Tianjin Polytechnic University, Tianjin 300387, China; Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin 300457, China.
authors: Shiru
authors: S
authors: Jia
authors: School of Textiles, Tianjin Polytechnic University, Tianjin 300387, China; Key Laboratory of Advanced Textile Composites (Tianjin Polytechnic University), Ministry of Education, Tianjin 300387, China. Electronic address: zhangjianfei1960@126.com.
authors: Jianfei
authors: J
authors: Zhang
authors: School of Textiles, Tianjin Polytechnic University, Tianjin 300387, China; Key Laboratory of Advanced Textile Composites (Tianjin Polytechnic University), Ministry of Education, Tianjin 300387, China.
authors: Hao
authors: H
authors: Liu
mesh_terms: D002482:Cellulose / Q000737:chemistry* / Q000191:economics; D041822:Gluconacetobacter xylinus / Q000378:metabolism*; D008566:Membranes / Q000737:chemistry*; D062065:Wastewater / Q000737:chemistry; D031957:Ziziphus / Q000737:chemistry
chemical_list: D002482:Cellulose; D062065:Wastewater
keywords: Acetobacter xylinum; Bacterial cellulose; Candied jujube; Pretreatment; Waste water