title: Antioxidant Properties of Phenolic Compounds in Renewable Parts of Crataegus pinnatifida inferred from Seasonal Variations.
abstract: In this study, the effect of seasonal variations on Crataegus pinnatifida, changes in antioxidant activity and active components in C. pinnatifida leaves, roots, twigs, and fruits from May to October were investigated. Through correlation analysis of climatic factors and 7 phenolic compounds yield, the phenolic compounds content was positively correlated with temperatures and daytime. The correlation coefficient of temperatures and daytime were 0.912 and 0.829, respectively. 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging, 2,2'-azino-bis 3-ethylbenzothiazoline-6-sulphonic acid (ABTS) radical scavenging and reducing power tests were employed to evaluate the antioxidant activity of the C. pinnatifida. C. pinnatifida leaves exhibited significant advantages in terms of higher phenolic contents and excellent antioxidant activities. Principal component analysis (PCA) revealed that 2 main PC characterize the C. pinnatifida phenolic composition (82.1% of all variance). C. pinnatifida leaves in September possessed remarkable antioxidant activity. The results elucidate that C. pinnatifida leaves, as renewable parts, are suitable for application as antioxidant ingredients.
authors.affiliation: Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry Univ, Harbin, 150040, PR China.|Collaborative Innovation Center for Development and Utilization of Forest Resources, Harbin, 150040, PR China.
authors.forename: Meng
authors.initials: M
authors.lastname: Luo
authors.affiliation: Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry Univ, Harbin, 150040, PR China.
authors.forename: Xuan
authors.initials: X
authors.lastname: Yang
authors.affiliation: Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry Univ, Harbin, 150040, PR China.
authors.forename: Jiao-Yang
authors.initials: JY
authors.lastname: Hu
authors.affiliation: Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry Univ, Harbin, 150040, PR China.|State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry Univ, Harbin, 150040, PR China.
authors.forename: Jiao
authors.initials: J
authors.lastname: Jiao
authors.affiliation: Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry Univ, Harbin, 150040, PR China.|Collaborative Innovation Center for Development and Utilization of Forest Resources, Harbin, 150040, PR China.
authors.forename: Fan-Song
authors.initials: FS
authors.lastname: Mu
authors.affiliation: Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry Univ, Harbin, 150040, PR China.
authors.forename: Zhuo-Yue
authors.initials: ZY
authors.lastname: Song
authors.affiliation: Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry Univ, Harbin, 150040, PR China.
authors.forename: Qing-Yan
authors.initials: QY
authors.lastname: Gai
authors.affiliation: Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry Univ, Harbin, 150040, PR China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Qiao
authors.affiliation: Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry Univ, Harbin, 150040, PR China.
authors.forename: Xin
authors.initials: X
authors.lastname: Ruan
authors.affiliation: Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry Univ, Harbin, 150040, PR China.|Collaborative Innovation Center for Development and Utilization of Forest Resources, Harbin, 150040, PR China.
authors.forename: Yu-Jie
authors.initials: YJ
authors.lastname: Fu
mesh_terms: D000975:Antioxidants / Q000032:analysis / Q000494:pharmacology*; D052160:Benzothiazoles / Q000378:metabolism; D001713:Biphenyl Compounds / Q000378:metabolism; D027825:Crataegus / Q000737:chemistry*; D005419:Flavonoids / Q000032:analysis / Q000494:pharmacology*; D010084:Oxidation-Reduction; D010636:Phenols / Q000032:analysis / Q000494:pharmacology*; D010851:Picrates / Q000378:metabolism; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D018515:Plant Leaves / Q000737:chemistry; D018514:Plant Structures / Q000737:chemistry; D012621:Seasons; D013451:Sulfonic Acids / Q000378:metabolism; D013472:Sunlight; D013696:Temperature
chemical_list: D000975:Antioxidants; D052160:Benzothiazoles; D001713:Biphenyl Compounds; D005419:Flavonoids; D010636:Phenols; D010851:Picrates; D010936:Plant Extracts; D013451:Sulfonic Acids; C002502:2,2'-azino-di-(3-ethylbenzothiazoline)-6-sulfonic acid; C004931:1,1-diphenyl-2-picrylhydrazyl
keywords: Crataegus pinnatifida; antioxidant activity; phenolic compounds; principal component analysis; seasonal variation