Study on the Structure and Bioactivity of <i>Ganoderma lucidum</i> Polysaccharides under Cassava Stalk Stress

Yijun Liu; Biyi Mai; Zhiyun Li; Xingqin Feng; Yunlan Chen; Lijing Lin; Qiuyu Xia

doi:10.3390/jof9050514

Journal of Fungi (Apr 2023)

Study on the Structure and Bioactivity of <i>Ganoderma lucidum</i> Polysaccharides under Cassava Stalk Stress

Yijun Liu,
Biyi Mai,
Zhiyun Li,
Xingqin Feng,
Yunlan Chen,
Lijing Lin,
Qiuyu Xia

Affiliations

Yijun Liu: Hainan Key Laboratory of Storage & Processing of Fruits and Vegetables, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, No. 48 Renmindadaonan, Zhanjiang 524001, China
Biyi Mai: Hainan Key Laboratory of Storage & Processing of Fruits and Vegetables, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, No. 48 Renmindadaonan, Zhanjiang 524001, China
Zhiyun Li: College of Food Science and Technology, Guangdong Ocean University, No. 1 Haida Road, Mazhang District, Zhanjiang 524088, China
Xingqin Feng: College of Tropical Crops Institute, Yunnan Agricultural University, Pu’er 650201, China
Yunlan Chen: College of Tropical Crops Institute, Yunnan Agricultural University, Pu’er 650201, China
Lijing Lin: Hainan Key Laboratory of Storage & Processing of Fruits and Vegetables, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, No. 48 Renmindadaonan, Zhanjiang 524001, China
Qiuyu Xia: College of Food Science and Technology, Guangdong Ocean University, No. 1 Haida Road, Mazhang District, Zhanjiang 524088, China

DOI: https://doi.org/10.3390/jof9050514
Journal volume & issue: Vol. 9, no. 5
p. 514

Abstract

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Various carbon sources affect the growth of the G. lucidum fruiting body, and the cassava stalk is considered a promising carbon source for G. lucidum. The composition, functional group characteristics, molecular weight distribution, antioxidant activity in vitro, and growth effect of L. rhamnosus LGG of G. lucidum polysaccharides (GLPs) under cassava stalk stress were investigated by gas chromatography-mass spectrometry, near-infrared spectroscopy, and gel chromatography. The results showed that GLPs consisted of D-glucose, D-galactose, and seven other monosaccharides. The end of the sugar chain had β-D-Glc and β-D-Gal configurations. The total sugar content in GLP1 was the highest (4.07%), and GLP1, GLP2, GLP3, and GLP5 had the β-D-Gal configuration, while GLP4 and GLP6 had the β-D-Glc configuration. The greater the proportion of cassava stalk, the greater the maximum molecular weight of GLPs. The total antioxidant capacities of GLPs obtained from different cassava stalks significantly varied, as well as their stimulating effects on the L. rhamnosus LGG growth. Higher concentrations of GLPs corresponded to the more intensive growth of L. rhamnosus LGG. This study provided essential data support for cassava stalk as a carbon source in G. lucidum cultivation.

Published in Journal of Fungi

ISSN: 2309-608X (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Biology (General)
Website: http://www.mdpi.com/journal/jof

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