title: Seasonal dynamics of the phytochemical constituents and bioactivities of extracts from Stenoloma chusanum (L.) Ching.
abstract: Stenoloma chusanum is a traditional Chinese medicinal herb with a very high total flavonoid content (TFC). The seasonal dynamics of the TFC and total phenolic content (TPC) in S. chusanum, as well as antioxidant activity, were investigated. The TFC and TPC showed clear seasonal dynamics, reaching their maxima (24.63 ± 1.34% and 9.58 ± 0.41%, respectively) in February. The TFC and TPC in the aerial parts of the plant were much higher than those in the subterranean parts; however, the antioxidant activities of the extracts from the subterranean parts were slightly higher than those from the aerial parts. Moreover, the extracts exhibited higher inhibition against tyrosinase than against arbutin (the positive control). The extract from S. chusanum collected in February was associated with the highest proliferation and apoptosis of K562 cells. The phytochemicals in the extract were analyzed using LC-MS, and were found to comprise of 12 flavonoids, five alkaloids, one sesquiterpenoid and one phenypropanoid. In conclusion, S. chusanum exhibits multiple bioactivities; these results could contribute to the therapeutic application of the plants in indigenous medicine.
authors.affiliation: College of Life & Environment Sciences, Shanghai Normal University, Shanghai 200234, China.
authors.forename: Siqi
authors.initials: S
authors.lastname: Wu
authors.affiliation: College of Life & Environment Sciences, Shanghai Normal University, Shanghai 200234, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Li
authors.affiliation: College of Life & Environment Sciences, Shanghai Normal University, Shanghai 200234, China; Shanghai Key Laboratory of Plant Functional Genomics & Resource, Shanghai Chenshan Botanical Garden, Shanghai 201602, China.
authors.forename: Quanxi
authors.initials: Q
authors.lastname: Wang
authors.affiliation: Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Avenida da Universidade, Taipa, Macau.
authors.forename: Hui
authors.initials: H
authors.lastname: Cao
authors.affiliation: College of Life & Environment Sciences, Shanghai Normal University, Shanghai 200234, China. Electronic address: cao101@shnu.edu.cn.
authors.forename: Jianguo
authors.initials: J
authors.lastname: Cao
authors.affiliation: Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Avenida da Universidade, Taipa, Macau; College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China. Electronic address: jianboxiao@yahoo.com.
authors.forename: Jianbo
authors.initials: J
authors.lastname: Xiao
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000494:pharmacology*; D000975:Antioxidants / Q000737:chemistry / Q000494:pharmacology*; D001713:Biphenyl Compounds; D029624:Ferns / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry / Q000494:pharmacology*; D006801:Humans; D020014:K562 Cells; D064209:Phytochemicals / Q000737:chemistry / Q000378:metabolism*; D010851:Picrates; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D012621:Seasons
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D000975:Antioxidants; D001713:Biphenyl Compounds; D005419:Flavonoids; D064209:Phytochemicals; D010851:Picrates; D010936:Plant Extracts; C004931:1,1-diphenyl-2-picrylhydrazyl
keywords: Anti-tumor activity; Anti-tyrosinase activity; Antioxidant activity; Flavonoids; Stenoloma chusanum