Research articles
ScienceAsia 52 (2026):ID 2026025 1-10 |doi:
10.2306/scienceasia1513-1874..025
Microbial fermentation of corn stalks by Streptomyces rochei
se-93: Extraction, characterization and hypoglycemic function
assessment of polysaccharides
Shuwei Lia, Meitong Lib,c,d, Jinmi Wua, Xuening Feia, Jinjun Yanga, Yuhong Xiea,*, Huimin Huoe,*
ABSTRACT: The effective utilization of straw is one of the pathways for the green and sustainable development
of agriculture. This study utilized Streptomyces rochei se-93 for the liquid-state fermentation of corn stalks yielding
polysaccharide products which were extensively characterized. Our results demonstrate that inoculation with S. rochei
se-93 significantly enhanced the polysaccharide content in the fermentation broth and promoted the degradation of
cellulose, hemicellulose, and lignin in corn stalks. The fermentation by S. rochei se-93 did not alter the monosaccharide
composition, configuration, or functional groups of the polysaccharides, but it did modify the monosaccharide
composition ratio and reduce the thermal stability of the polysaccharides. Meanwhile, fermentation significantly
improved the hypoglycemic activity of the polysaccharides: at a concentration of 2 mg/ml, its inhibition rate against
?-amylase reached 56.90?0.42%, which was approximately 4.50% higher than that of the control group CSP-B
(54.43?0.28% at 4 mg/ml); at a concentration of 10 mg/ml, its inhibition rate against ?-glucosidase reached
83.40?1.36%, representing an approximate 10.96% increase compared to CSP-B (75.16?0.91%). This study
contributes to the high-value utilization of agricultural waste (corn stalks) and offers a potential pathway for developing
novel natural compounds with hypoglycemic properties.
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| a |
School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin 300384 China |
| b |
School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384 China |
| c |
Tianjin Key Laboratory of Hazardous Waste Safety Disposal and Recycling Technology, Tianjin 300384 China |
| d |
Tianjin Engineering Research Center of Green Chemical Industry and Waste Recycling, Tianjin 300384 China |
| e |
Solid Waste and Chemicals Management Center, Ministry of Ecology and Environment of the People?s Republic of
China, 100029 China |
* Corresponding author, E-mail: xieyuhong76@126.com, huohuimin@meescc.cn
Received 30 May 2025, Accepted 1 Mar 2026
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