Polyphenols, Vitamin C, in Vitro A ntioxidant Capacity, α-Amylase and COX-2 Inhibitory Activities of Citrus Samples from Aceh, Indonesia

This study was conducted to analyse antioxidant potencies, vitamin C contents, polyphenol profiles, antidiabetic and anti-inflammatory potencies of citrus fruits from Indonesia. Total phenolics contents (TPC) of seven citrus fruits from northern Aceh, Indonesia, were measured using Folin-Ciocalteu (...

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Bibliographic Details
Published in:International journal for vitamin and nutrition research 2019-11, Vol.89 (5-6), p.337-347
Main Authors: Thieme, Constanze, Westphal, Anna, Malarski, Angelika, Böhm, Volker
Format: Article
Language:English
Subjects:
alpha-Amylases
Antioxidants
Ascorbic Acid
Citrus
Cyclooxygenase 2
Fruit
Indonesia
Plant Extracts
Polyphenols
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Summary:This study was conducted to analyse antioxidant potencies, vitamin C contents, polyphenol profiles, antidiabetic and anti-inflammatory potencies of citrus fruits from Indonesia. Total phenolics contents (TPC) of seven citrus fruits from northern Aceh, Indonesia, were measured using Folin-Ciocalteu (FC) and Fast Blue BB (FBBB) methods. Total flavonoid content (TFC) test showed for peel and pulp extracts of calung and jeruk takengon (local mandarin) the highest values. H-TEAC (hydrophilic trolox equivalent antioxidant capacity) and H-ORAC (hydrophilic oxygen reactive absorbance capacity) antioxidant capacity were highest for peel and pulp of jeruk takengon, calung and kruet mameh. Interestingly, peel extracts showed no α-amylase inhibition activity whilst pulp showed weak inhibitory activity. Polyphenol composition was dominated by flavanones, with hesperidin and neohesperidin as main flavanones (hesperidin: 131-5433 mg/100 g DW, neohesperidin: 431-4131 mg/100 g DW). Vitamin C contents were highly correlated with antioxidant capacities in pulp (R  = 0.95 and R  = 0.94 at p 
ISSN:0300-9831
1664-2821
DOI:10.1024/0300-9831/a000481