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Chem Biodivers

Title:		Chemical Composition and Antioxidant Activity of Tuber indicum from Different Geographical Regions of China
Author(s):		Li JM; Liang HQ; Qiao P; Su KM; Liu PG; Guo SX; Chen J;
Address:		"Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, P. R. China. Biochemical School, Beijing City University, Beijing, 100083, P. R. China. Shandong Institute of Sericulture, Shandong Academy of Agricultural Sciences, Yantai, 250100, P. R. China. Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Kunming, 650223, P. R. China. Key Laboratory for Plant Diversity and Biogeography at East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, P. R. China"
Journal Title:		Chem Biodivers
Year:		2019
Volume:		20190219
Issue:		3
Page Number:		e1800609 -
DOI:		10.1002/cbdv.201800609
ISSN/ISBN:		1612-1880 (Electronic) 1612-1872 (Linking)
Abstract:		"Tuber indicum, an endemic truffle species in eastern Asian, is an edible mushroom that is both an important export and widely distributed across China. Many existing studies on truffles focus on analyzing their taxonomy, population genetics, volatile organic compounds and artificial cultivation of the truffles, while little information is available about their nutrient composition and pharmacological activity, especially the relationship between chemical composition in ascocarps and their geographic distributions. This study presents a comprehensive investigation of the chemical composition of T. indicum, including free sugars, fatty acids, organic acids, phenolic acids, flavonoids, and polysaccharides, and tracks the antioxidant activity of T. indicum ascocarps collected from five geographical regions of four provinces in P. R. China: Hebei, Tibet, Yunnan, and Liaoning province. Our results showed that T. indicum collected from Qujing, Yunnan province, possessed the highest amount of free sugars (23.67 mg/g dw), total flavonoids (2.31 mg/g dw), total phenolics (4.46 mg/g dw) and the highest DPPH and ABTS radical-scavenging activities. The amount of water-soluble polysaccharides was the highest (115.24 mg/g dw) in ascocarps from Tibet, the total organic acids was the highest (22.073 mg/g dw) in ascocarps from Gongshan, and polyunsaturated fatty acids were most abundant in those from Hebei province. This study reveals that the quantity of chemical compounds in T. indicum varies by geographical origin. Detecting differences in chemical composition may provide important data for understanding the relationship between environmental factors and truffle formation, as well as quality evaluation of the commercial species T. indicum throughout China"
Keywords:		Antioxidants/chemical synthesis/chemistry/*pharmacology Ascomycota/*chemistry Benzothiazoles/*antagonists & inhibitors Biphenyl Compounds/*antagonists & inhibitors China Flavonoids/chemical synthesis/chemistry/*pharmacology Phenols/chemical synthesis/chem;
Notes:		"MedlineLi, Jia-Mei Liang, Han-Qiao Qiao, Peng Su, Kai-Mei Liu, Pei-Gui Guo, Shun-Xing Chen, Juan eng 81573527/National Natural Science Foundation of China/ CIFMS/CAMS Innovation Fund for Medical Sciences/ 2017-I2M-3-013/CAMS Innovation Fund for Medical Sciences/ 2014CB138304/National Basic Research Program of China/ KM201911418002/Scientific and Technological Research Program of Beijing Municipal Education Commission/ Switzerland 2019/01/04 Chem Biodivers. 2019 Mar; 16(3):e1800609. doi: 10.1002/cbdv.201800609. Epub 2019 Feb 19"