Phenolic compounds and antioxidant activities of edible flowers of Pyrus pashia

Jianmin He; Tianpeng Yin; Yang Chen; Le Cai; Zhigang Tai; Zhenjie Li; Chuanshui Liu; Yarong Wang; Zhongtao Ding

Journal of Functional Foods (Aug 2015)

Phenolic compounds and antioxidant activities of edible flowers of Pyrus pashia

Jianmin He,
Tianpeng Yin,
Yang Chen,
Le Cai,
Zhigang Tai,
Zhenjie Li,
Chuanshui Liu,
Yarong Wang,
Zhongtao Ding

Affiliations

Jianmin He: Key Laboratory of Medicinal Chemistry for Natural Resources, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, China; School of Resource and Environment, Baoshan University, Baoshan, Yunnan 678000, China
Tianpeng Yin: Key Laboratory of Medicinal Chemistry for Natural Resources, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, China
Yang Chen: Department of Pharmaceutical Sciences, Zunyi Medical University Zhuhai Campus, Zhuhai, Guangdong 519041, China
Le Cai: Key Laboratory of Medicinal Chemistry for Natural Resources, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, China
Zhigang Tai: Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan 650500, China
Zhenjie Li: Key Laboratory of Medicinal Chemistry for Natural Resources, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, China
Chuanshui Liu: Key Laboratory of Medicinal Chemistry for Natural Resources, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, China
Yarong Wang: Department of Pharmaceutical Sciences, Zunyi Medical University Zhuhai Campus, Zhuhai, Guangdong 519041, China
Zhongtao Ding: Key Laboratory of Medicinal Chemistry for Natural Resources, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, China; Corresponding author. Key Laboratory of Medicinal Chemistry for Natural Resources, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, China. Tel.: +86 0871 6503 3910; fax: +86 0871 6503 3910.

Journal volume & issue: Vol. 17
pp. 371 – 379

Abstract

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Pyrus pashia flowers are used as edible and medicinal materials in Yunnan Province, China. The antioxidant activities of 85% ethanolic extract of P. pashia flowers and derived soluble fractions were evaluated for the first time using four different test systems. The total phenolic and total flavonoid contents of each fraction were also determined. It was found that the ethyl acetate fraction exhibited the strongest antioxidant effect. An investigation of this flower's chemical constituents was carried out and led to the isolation of a new phenolic glycoside, 4-O-Z-coumaroylarbutin (1), along with twenty-seven other phenolic compounds (2–28). Hydroquinone (13) showed the highest content and powerful activity, which implied that the compound plays an important role in the antioxidant activity of this flower. Thus, P. pashia flowers could serve as a valuable natural antioxidant source for potential application in functional foods.

Published in Journal of Functional Foods

ISSN: 1756-4646 (Print); 2214-9414 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Home economics: Nutrition. Foods and food supply
Website: https://www.journals.elsevier.com/journal-of-functional-foods

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