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International Journal of Medicinal Mushrooms
IF: 1.423 5-Year IF: 1.525 SJR: 0.431 SNIP: 0.661 CiteScore™: 1.38

ISSN Print: 1521-9437
ISSN Online: 1940-4344

International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.v17.i2.50
pages 141-150

Biological Activities of the Polysaccharides Produced from Different Sources of Xylaria nigripes (Ascomycetes), a Chinese Medicinal Fungus

Mu-Chun Hung
Department of Medicinal Botanicals and Health Applications, Da-Yeh University, Datsuen, Changhua, 51591, Taiwan (R. O. C.)
Chia-Chun Tsai
Department of Medicinal Botanicals and Health Applications, Da-Yeh University, Datsuen, Changhua, 51591, Taiwan (R. O. C.)
Tai-Hao Hsu
Department of Medicinal Botanicals and Health Applications, Da-Yeh University, Datsuen, Changhua, 51591, Taiwan (R. O. C.); Department of Bioindustry Technology, Da-Yeh University, Datsuen, Changhua, 51591, Taiwan (R. O. C.)
Zeng-Chin Liang
Department of Bioresources, Da-Yeh University, Changhua County 515, Taiwan
Fang-Yi Lin
Department of Bioindustry Technology, Da-Yeh University, Datsuen, Changhua, 51591, Taiwan
Shih-Liang Chang
School of Chinese Medicine, China Medical University, Taichung, Taiwan; Department of Medicinal Botanicals and Health Applications, Da-Yeh University, Changhua, Taiwan
Wai-Jane Ho
Department of Medicinal Botanicals and Healthcare, Department of Bioresources, Da-Yeh University, Datsun, Changhua, 51591 Taiwan
Chang-Wei Hsieh
Department of Medicinal Botanicals and Health Applications, Da-Yeh University, Datsuen, Changhua, 51591, Taiwan (R. O. C.)

ABSTRACT

Xylaria nigripes, a local rare medicinal fungus, has multi-antioxidant activities owing to its water extraction as shown by previous research. However, the main indicator causing the antioxidant effect was not clear, so this research focused on the antioxidant activities from different sources of X. nigripes such as fruiting body polysaccharides, mycelium intracellular polysaccharides, mycelium extracellular polysaccharides, and their deproteinization products. The mycelium intracellular polysaccharide (XnIPS-1) from X. nigripes showed the highest reducing power of antioxidant activity, since it revealed the lowest IC50 values in all the assayed methodologies. The IC50 values of chelating ferrous ion ability, ABTS radical scavenging activity, and DPPH free radical scavenging were 1412, 174.25, and 351.56 µg/mL, respectively. In addition to these results, this research also explored the mechanism between polysaccharides and antioxidants compared by FT-IR analysis. The spectrum shows that the X. nigripes polysaccharide structure changed after the proteins were removed.


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