Antioxidant and Antiradical Capacities in Apricot (Prunus armeniaca L.) Fruits: Variations from Genotypes, Years, and Analytical Methods

作者：Hegedus Attila^*; Engel Rita; Abranko Laszlo; Balogh Emoke; Blazovics Anna; Herman Rita; Halasz Julia; Ercisli Sezai; Pedryc Andrzej; Stefanovits Banyai Eva

来源：Journal of Food Science, 2010, 75(9): C722-C730.

DOI：10.1111/j.1750-3841.2010.01826.x

• antioxidant capacity
• color
• fruit
• polyphenols
• Vitamin C

The fruit quality parameters and antioxidant capacity (ferric reducing antioxidant power, FRAP) and total phenolic content (TPC) were determined in 27 apricot cultivars and hybrids of diverse origins. Twenty one-to 35-fold variations were measured among FRAP and TPC values. Besides genotype, harvest year also contributed significantly (P <= 0.05) to the variations of TPC presumably due to the climatic differences between years. A subset of genotypes (15) was also analyzed for their antiradical activities (2,2' -diphenyl-1-picrylhydrazyl, DPPH; total radical-scavenging activity, TRSA; water-soluble antioxidant capacity, ACW; and lipid-soluble antioxidant capacity, ACL), and vitamin C contents as well as color indices (CIE H degrees, L*, and chroma). The hybrid "Preventa" had outstanding FRAP (>10.4 mmol ascorbic acid/L), DPPH (74.45%), TRSA (0.002%), ACW(33587.5 nmol AA/L) and ACL (78.65 nmol Trolox/L), TPC (>2890.0 mg gallic acid/L), and vitamin C (16.17 mg/100 g FW) levels and an average carotenoid content estimated from the hue angle (66.99.). Most antioxidant and antiradical activities correlated significantly except for TRSA; the closest correlation was observed between FRAP and ACW (r = 0.952). Only TRSA showed significant correlations with color indices, H degrees and chroma, suggesting TRSA measures at least a fraction of the antioxidant capacity attributable to apricot carotenoids.

• 出版日期2010-12