title: Bioactive saponin from tea seed pomace with inhibitory effects against Rhizoctonia solani.
abstract: The present study was aimed to characterize the antifungal principles in methanol extract of tea ( Camellia oleifera ) seed pomace. Totally, two flavonoids, camelliasides A (1) and B (2), and one saponin mixture composed of camelliasaponin B(1) (3) were identified from the methanol extract. These constituents were tested for their ability to reduce the infection of cabbage seedlings by Rhizoctonia solani Kuhn AG-4 and to inhibit growth of the pathogen on potato dextrose agar plates. The saponin mixture is a potential candidate as a new plant-derived pesticide to control Rhizoctonia damping-off of vegetable seedlings.
authors.affiliation: Department of Biotechnology, National Formosa University, Yunlin 632, Taiwan.
authors.forename: Ping-Chung
authors.initials: PC
authors.lastname: Kuo
authors.forename: Tsung-Chun
authors.initials: TC
authors.lastname: Lin
authors.forename: Cheng-Wei
authors.initials: CW
authors.lastname: Yang
authors.forename: Chih-Lung
authors.initials: CL
authors.lastname: Lin
authors.forename: Guo-Feng
authors.initials: GF
authors.lastname: Chen
authors.forename: Jenn-Wen
authors.initials: JW
authors.lastname: Huang
mesh_terms: D001937:Brassica / Q000382:microbiology*; D028244:Camellia / Q000737:chemistry*; D010935:Plant Diseases / Q000382:microbiology*; D010936:Plant Extracts / Q000302:isolation & purification / Q000494:pharmacology*; D012232:Rhizoctonia / Q000187:drug effects* / Q000254:growth & development; D012503:Saponins / Q000302:isolation & purification / Q000494:pharmacology*; D012639:Seeds / Q000737:chemistry
chemical_list: D010936:Plant Extracts; D012503:Saponins