Study on rapid drying and spoilage prevention of potato pulp using solid-state fermentation with Aspergillus aculeatus

被引：3
作者：
Zhao, Liyao [2 ]
Cheng, Li [1 ,2 ,3 ]
Deng, Yu [4 ,5 ]
Li, Zhaofeng [1 ,2 ,3 ]
Hong, Yan [1 ,2 ,3 ]
Li, Caiming [1 ,2 ,3 ]
Ban, Xiaofeng [1 ,2 ,3 ]
Gu, Zhengbiao [1 ,2 ,3 ]
机构：
[1] Jiangnan Univ, State Key Lab Food Sci & Technol, Wuxi 214122, Jiangsu, Peoples R China
[2] Jiangnan Univ, Sch Food Sci & Technol, Wuxi 214122, Jiangsu, Peoples R China
[3] Jiangnan Univ, Collaborat Innovat Ctr Food Safety & Qual Control, Wuxi 214122, Jiangsu, Peoples R China
[4] Jiangnan Univ, Natl Engn Lab Cereal Fermentat Technol, Wuxi 214122, Jiangsu, Peoples R China
[5] Jiangnan Univ, Sch Biotechnol, Wuxi 214122, Jiangsu, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2020年 / 296卷
基金：
中国国家自然科学基金;
关键词：
Potato pulp; Aspergillus aculeatus; Solid-state fermentation; Spoilage prevention; Rapid drying; WALL DEGRADING ENZYMES; WATER-HOLDING CAPACITY; SUBMERGED FERMENTATION; MICROBIAL COMMUNITY; DARK FERMENTATION; ACID PRODUCTION; PECTINASE; RECOVERY; IDENTIFICATION; DYNAMICS;
D O I：
10.1016/j.biortech.2019.122323
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Effects of solid-state fermentation on rapid drying and spoilage prevention of potato pulp were evaluated. Pectin hydrolyzing and antibacterial ability of pectinase-secreting Aspergillus aculeatus and Bacillus subtilis were compared. A. aculeatus grew better in potato pulp, with highest pectinase yield of 342.71 +/- 5.09 U/mL and rapid pH reduction to 3.76 +/- 0.01. Next generation sequencing showed that the abundance of genera Candida and Enterobacter, which probably caused undesirable fermentation and spoilage, were significantly reduced after inoculation with A. aculeatus. In addition, fermentation with A. aculeatus significantly reduced water holding capacity from 16.63 +/- 0.36 g/g to 7.78 +/- 0.12 g/g, which resulted in lower viscosity and water binding capacity, and concomitantly significantly decreased moisture content from 76.05 +/- 0.24% to 12.95 +/- 0.19% after filtration and airflow drying. These results suggested that solid-state fermentation might be a promising technology for efficient processing and utilization of potato pulp.
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页数：8
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