title: Phenolic compounds and antioxidant activity of bulb extracts of six Lilium species native to China.
abstract: Lily (Lilium) is used as an important edible and medical plant species with a vague taxonomic classification and a long history in China. Bulbs of six Lilium species (L. regale, L. concolor, L. pumilum, L. leucanthum, L. davidii var. unicolor and L. lancifolium) native to China were investigated with a view to their exploitation as a potential source of natural antioxidants due to their phenolic composition and dietary antioxidant potential. The results showed that all bulb extracts exhibited strong antioxidant activities, which generally correlated positively with the total phenolic contents (r = 0.68 to 0.94), total flavonoid contents (r = 0.51 to 0.89) and total flavanol contents (r = 0.54 to 0.95). High-performance liquid chromatography (HPLC) analysis revealed that rutin and kaempferol were the major phenolic components in the extracts. Hierarchical cluster analysis showed that L. regale belonged to the group with high phenolic content and strong antioxidant power. L. concolor and L. pumilum were arranged in one group characterized by moderate phenolic content and antioxidant capacity, while L. leucanthum, L. davidii var. unicolor and L. lancifolium were clustered in the third group with low phenolic content and weak antioxidant activity. These strongly suggest that lily bulbs may serve as a potential source of natural antioxidant for food and pharmaceutical applications.
authors.affiliation: College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Jin
authors.forename: Yanlong
authors.initials: Y
authors.lastname: Zhang
authors.forename: Linmao
authors.initials: L
authors.lastname: Yan
authors.forename: Yulong
authors.initials: Y
authors.lastname: Guo
authors.forename: Lixin
authors.initials: L
authors.lastname: Niu
mesh_terms: D052160:Benzothiazoles / Q000737:chemistry; D001713:Biphenyl Compounds / Q000737:chemistry; D002681:China; D002851:Chromatography, High Pressure Liquid; D016000:Cluster Analysis; D003373:Coumaric Acids / Q000737:chemistry / Q000302:isolation & purification*; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D016166:Free Radical Scavengers / Q000737:chemistry / Q000302:isolation & purification*; D005609:Free Radicals / Q000737:chemistry; D062385:Hydroxybenzoates / Q000737:chemistry / Q000302:isolation & purification*; D017665:Hydroxyl Radical / Q000737:chemistry; D027762:Lilium / Q000737:chemistry*; D010084:Oxidation-Reduction; D010851:Picrates / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry*; D013451:Sulfonic Acids / Q000737:chemistry
chemical_list: D052160:Benzothiazoles; D001713:Biphenyl Compounds; D003373:Coumaric Acids; D004365:Drugs, Chinese Herbal; D005419:Flavonoids; D016166:Free Radical Scavengers; D005609:Free Radicals; D062385:Hydroxybenzoates; D010851:Picrates; D013451:Sulfonic Acids; C002502:2,2'-azino-di-(3-ethylbenzothiazoline)-6-sulfonic acid; D017665:Hydroxyl Radical; C004931:1,1-diphenyl-2-picrylhydrazyl