Phenolic content, antioxidant capacity, and α-amylase and α-glucosidase inhibitory activities of Dimocarpus longan Lour
The aim of this study was to compare the phenolic compound profiles and antioxidant capacities of eight varieties of longan ( Dimocarpus longan Lour.) planted in the middle and upper Yangtze River area. The total polyphenols content (TPC) and total flavonoids content (TFC) of dried longan pulp range...
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Veröffentlicht in: | Food science and biotechnology 2020, 29(5), , pp.683-692 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The aim of this study was to compare the phenolic compound profiles and antioxidant capacities of eight varieties of longan (
Dimocarpus longan
Lour.) planted in the middle and upper Yangtze River area. The total polyphenols content (TPC) and total flavonoids content (TFC) of dried longan pulp ranged from 1.07 ± 0.05 to 1.22 ± 0.05 mg gallic acid equivalents/g and 0.25 ± 0.07 to 0.87 ± 0.14 mg rutin equivalents/g. UHPLC-QqQ-MS/MS analysis revealed 12 individual polyphenol compounds in longan. The Fuwan8, Dongliang and FD97 varieties showed the strongest DPPH scavenging activity (IC
50
of 1.03 g/mL). The highest ABTS
+
scavenging activity was found in the Dongliang. In the enzyme assays, the Fuwan8 and Dongliang varieties demonstrated maximum α-amylase and α-glucosidase inhibition activities, with values of 97.56 and 88.58%, respectively. The principal component analysis indicated that the Rongyu8 and Songfengben cultivars have nearly analogous polyphenol compounds. |
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ISSN: | 1226-7708 2092-6456 |
DOI: | 10.1007/s10068-019-00708-3 |