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논문 기본 정보

자료유형
학술저널
저자정보
Zhou Yadi (School of Food and Health, Beijing Technology and Business University, No. 11 Fucheng Street, Haidian District, Beijing 100084, P.R. China) Sun Qijie (School of Food and Health, Beijing Technology and Business University, No. 11 Fucheng Street, Haidian District, Beijing 100084, P.R. China) Teng Chao (Key Laboratory of Green Manufacturing and Synthetic Biology of Food Bioactive Substances, China General Chamber of Commerce, Beijing Technology and Business University, No. 11 Fucheng Street) Zhou Mingchun (School of Food and Health, Beijing Technology and Business University, No. 11 Fucheng Street, Haidian District, Beijing 100084, P.R. China) Fan Guangsen (Key Laboratory of Green Manufacturing and Synthetic Biology of Food Bioactive Substances, China General Chamber of Commerce, Beijing Technology and Business University, No. 11 Fucheng Street) Qu Penghui (School of Food and Health, Beijing Technology and Business University, No. 11 Fucheng Street, Haidian District, Beijing 100084, P.R. China)
저널정보
한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology Vol.34 No.2
발행연도
2024.2
수록면
330 - 339 (10page)
DOI
10.4014/jmb.2308.08010

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Corn cobs were fermented with Aspergillus niger to produce soluble dietary fiber (SDF) of high quality and excellent food safety. In this work, the fermentation process was optimized by singlefactor test and response surface methodology (RSM). The optimal fermentation conditions were determined to be a material-liquid ratio of 1:30, an inoculum concentration of 11%, a temperature of 32o C, a time of 6 days, and a shaking speed of 200 r/min. Under these conditions, the SDF yield of corn cob increased from 2.34% to 11.92%, and the ratio of soluble dietary fiber to total dietary fiber (SDF/TDF) reached 19.08%, meeting the requirements for high-quality dietary fiber (SDF/TDF of more than 10%). Scanning electron microscopy (SEM) and Fourier-transformed infrared spectroscopy (FT-IR) analysis revealed that the fermentation effectively degraded part of cellulose and hemicellulose, resulting in the formation of a loose and porous structure. After fermentation the water swelling capacity, water-holding capacity, and oil-holding capacity of the corn cob SDF were significantly improved and the adsorption capacity of glucose, cholesterol, and nitrite ions all increased by more than 20%. Moreover, the total phenolic content increased by 20.96%, which correlated with the higher antioxidant activity of SDF. Overall, the fermentation of corn cobs by A. niger increased the yield and enhanced the functional properties of dietary fiber (DF) as well.

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