期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 61, 期 11, 页码 2762-2772出版社
AMER CHEMICAL SOC
DOI: 10.1021/jf304969b
关键词
polyphenols; polymeric procyanidins; mDP; LC-MS-QTof; L-ascorbic acid; antioxidant activity; bioactive compounds; PPO
资金
- Polish Ministry of Science and Higher Education [N N312 199935]
Phytochemical profiles (phenolic compounds, L-ascorbic acid, antioxidant and PPO activities) of 13 different quince varieties and 5 genotypes were studied. Polyphenols were identified by LC-PDA-QTof/MS and quantified by UPLC-PDA and UPLC-FL. A total of 26 polyphenolic compounds found in quince tissues were identified and presented: 9 flavan-3-ols ((-)-epicatechin, procyanidin B2, 3 procyanidin dimers and trimers, and 1 tetramer); 8 hydroxycinnamates, derivatives of caffeoylquinic and coumaroylquinic acid; and 9 kaempferol and quercetin derivatives. The content of total polyphenols was between 170943 (genotype 'S1') and 3436.56 mg/100 g dry weight ('Leskovac'). Flavan-3-ols, which are the major class of quince polyphenols, represented between 78 and 94% of the total polyphenolic compounds. The activity of PPO enzyme ranged from 709.85 to 1284.59 Delta U/min, and that of L-ascorbic acid ranged from 5.86 to 2642 mg/100 g. Some quince varieties and their products characterized by a higher content of phenolic compounds may be selected to promote their positive effect on health.
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