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International Journal of Medicinal Mushrooms
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ISSN Imprimer: 1521-9437
ISSN En ligne: 1940-4344

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International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.v19.i1.80
pages 75-85

Characterization of Polysaccharides from the Fruiting Bodies of Two Species of Genus Ganoderma (Agaricomycetes) and Determination of Water-Soluble β-D-Glucan Using High-Performance Liquid Chromatography

Yanfang Liu
National Engineering Research Centre of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilisation, Ministry of Agriculture, Institute of Edible Fungi, Shanghai Academy of Agriculture Sciences, Shanghai, People's Republic of China
Qing-jiu Tang Tang
Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai, China
Yan Yang
National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
Shuai Zhou
Key Laboratory of Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, People's Republic of China; National Engineering Research Centre of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilisation, Ministry of Agriculture, Institute of Edible Fungi, Shanghai Academy of Agriculture Sciences, Shanghai, People's Republic of China
Di Wu
Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai, China; National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Shanghai, China
Chuanhong Tang
National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
Zhong Zhang
National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
Mengqiu Yan
Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, National Engineering Research Center of Edible Fungi, National R&D Center for Edible Fungi Processing, Shanghai, China
Jie Feng
National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization, Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Shanghai, China; Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai, China
Jing-Song Zhang
National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China

RÉSUMÉ

Molecular weight (Mw) distributions of polysaccharides from the fruiting bodies of different Ganoderma lucidum strains and G. sinense were investigated and compared using high-pressure size exclusion chromatography/multiangle laser light scattering/refractive index analysis. Results showed that there were big differences in the Mw distributions and characteristics of polysaccharides from 2 species of Ganoderma. All tested G. lucidum materials exhibited similar polysaccharide distributions and similar characteristics for each fraction. The fraction with highest Mw (peak 1) was identified as β-(1→3)-linked D-glucan with (1→6)-β-D-glucopyranosyl side branches. G. sinense fruiting bodies did not include the β-D-glucan when compared with G. lucidum. A high-pressure size exclusion chromatography method was developed and applied to determine the amount of high-Mw β-D-glucan in G. lucidum fruiting bodies. Results indicated that there was no obvious relationship between β-D-glucan content and the genetic similarity of G. lucidum. The strain labeled "Longzhi no. 2" was determined to possess the largest amount of β-D-glucan: 8.2 mg/mL based on the dry weight of fruiting bodies. The β-D-glucan content in the hot water extract of Longzhi no. 2 reached 17.05%. For the "Hunong no. 1" strain, the β-D-glucan content in log-cultivated fruiting bodies was much higher than that in bag-cultivated ones. This method could be used to improve quality control of polysaccharides in G. lucidum.


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