title: Quality assessment of Japanese knotweed (Fallopia japonica) grown on Prince Edward Island as a source of resveratrol.
abstract: Japanese knotweed (Fallopia japonica , also known as Polygonum cuspidatum) is a common invasive plant species on Prince Edward Island (PEI), Canada, whereas it has been used in Chinese medicine and more recently as a raw material for extracting resveratrol. This paper reports on the quantification of resveratrol, polydatin, emodin, and physcion in roots, stems, and leaves of Japanese knotweed samples from PEI and British Columbia (BC), Canada, and nine provinces of China, by ultraperformance liquid chromatography (UPLC). The results showed that the root contains a much higher level of resveratrol than the stem and leaf, and it is accumulated in its highest level in October. PEI-grown knotweed contains similar levels of resveratrol and polydatin compared to Chinese samples collected in the month of October, but the contents of the other anthraquinones (emodin and physcion) are different. As such, Japanese knotweed grown in PEI could be a commercially viable source of raw material for resveratrol production; however, caution has to be taken in harvesting the right plant species.
authors.affiliation: Aquatic and Crop Resource Development, National Research Council Canada, 550 University Avenue, Charlottetown, PE C1A 4P3, Canada.
authors.forename: Huaguo
authors.initials: H
authors.lastname: Chen
authors.forename: Tina
authors.initials: T
authors.lastname: Tuck
authors.forename: Xiuhong
authors.initials: X
authors.lastname: Ji
authors.forename: Xin
authors.initials: X
authors.lastname: Zhou
authors.forename: Glen
authors.initials: G
authors.lastname: Kelly
authors.forename: Alain
authors.initials: A
authors.lastname: Cuerrier
authors.forename: Junzeng
authors.initials: J
authors.lastname: Zhang
mesh_terms: D000975:Antioxidants / Q000032:analysis / Q000302:isolation & purification* / Q000378:metabolism; D004642:Emodin / Q000031:analogs & derivatives / Q000032:analysis / Q000302:isolation & purification / Q000378:metabolism; D045468:Fallopia japonica / Q000737:chemistry* / Q000254:growth & development / Q000378:metabolism; D005960:Glucosides / Q000032:analysis / Q000096:biosynthesis / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry / Q000254:growth & development; D018517:Plant Roots / Q000737:chemistry / Q000254:growth & development; D018547:Plant Stems / Q000737:chemistry / Q000254:growth & development; D057685:Plant Weeds / Q000737:chemistry* / Q000254:growth & development / Q000378:metabolism; D011325:Prince Edward Island; D011786:Quality Control; D000077185:Resveratrol; D013267:Stilbenes / Q000032:analysis / Q000302:isolation & purification* / Q000378:metabolism
chemical_list: D000975:Antioxidants; D005960:Glucosides; D013267:Stilbenes; C008905:physcione; D004642:Emodin; D000077185:Resveratrol; C058229:polydatin