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International Journal of Medicinal Mushrooms
Fator do impacto: 1.423 FI de cinco anos: 1.525 SJR: 0.431 SNIP: 0.661 CiteScore™: 1.38

ISSN Imprimir: 1521-9437
ISSN On-line: 1940-4344

Volumes:
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International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.v18.i7.60
pages 609-620

Comparison of the Chemical Profiles and Antioxidant and Antidiabetic Activities of Extracts from Two Ganoderma Species (Agaricomycetes)

Xiaoqing Tang
Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, China
Weixi Cai
Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, China
Baojun (Bruce) Xu
Programme of Food Science and Technology Division of Science and Technology Beijing Normal University, Hong Kong Baptist University United International College SAR of PRC

RESUMO

The objective of this study was to compare the mycochemical profiles, antioxidant activities, and antidiabetic effects of 2 species of genus Ganoderma, the red lingzhi (G. lucidum) and purple lingzhi (G. sinense) mushrooms. In Chinese medicinal practice, hot water and ethanol are used as solvents to extract samples. In this study, a total of 4 extracts (ethanol and hot water extracts from G. lucidum and G. sinense) were prepared for further assays. Hot water extracts presented much higher values for total phenolic content and ferric-reducing antioxidant power than the ethanol extracts. Ethanol (70%) extract of G. lucidum had the strongest α-glycosidase inhibitory capacity, but the lingzhi polysaccharides showed no inhibitory effect. It also had the largest amount of total ganoderic acids. The results indicated that ethanol extracts from both G. lucidum and G. sinense showed better antidiabetic effects than the hot water extracts. Ganoderic acids, rather than polysaccharides, may contribute the antidiabetic effects of both the Ganoderma species.