Application of Aspergillus niger in Practical Biotechnology of Industrial Recovery of Potato Starch By-Products and Its Flocculation Characteristics
文献类型： 外文期刊
作者： Zhang, Liang 1 ; Cao, Guangli 2 ; Liu, He 3 ; Wu, Zhenting 1 ; Gong, Dianliang 1 ; Ru, Xin 1 ; Gong, Xiujie 4 ; Pi, Qiuyue 1 ; Yang, Qian 1 ;
作者机构： 1.Harbin Inst Technol, Sch Life Sci & Technol, Bioengn Ctr, Harbin 150001, Peoples R China
2.Harbin Inst Technol, State Key Lab Urban Water Resources & Environm, Harbin 150090, Peoples R China
3.Chinese Acad Trop Agr Sci, Hainan Key Lab Trop Ecocircular Agr, Environm & Plant Protect Inst, Haikou 571101, Hainan, Peoples R China
4.Heilongjiang Acad Agr Sci, Inst Farming & Cultivat, Harbin 150086, Peoples R China
关键词： potato starch by-products; recovery biotechnology; industrial scale; Aspergillus niger; flocculation mechanism
期刊名称：MICROORGANISMS （ 影响因子：4.926； 五年影响因子：5.143 ）
ISSN：
年卷期： 2022 年 10 卷 9 期
页码：
收录情况： SCI
摘要： This study developed a practical recovery for potato starch by-products by A. niger and applied it on a plant scale to completely solve the pollution problems. Soughing to evaluate the effect of A. niger applied towards the production of by-products recycling and analyze the composition and characteristics of flocculating substances (FS) by A. niger and advance a possible flocculation mechanism for by-product conversion. After fermentation, the chemical oxygen demand (COD) removal rate, and the conversion rates of cellulose, hemicellulose, pectin, and proteins were 58.85%, 40.19%, 53.29%, 50.14%, and 37.09%, respectively. FS was predominantly composed of proteins (45.55%, w/w) and polysaccharides (28.07%, w/w), with two molecular weight distributions of 7.3792 x 10(6) Da and 1.7741 x 10(6) Da and temperature sensitivity. Flocculation was mainly through bridging and ionic bonding, furthermore, sweeping effects may occur during sediment. Flocculation was related to by-products conversion. However, due to severe pollution problems and resource waste, and deficiencies of existing recovery technologies, converting potato starch by-products via A. niger liquid fermentation merits significant consideration.
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