Abstract
The antioxidant activities of hot water extracts from fresh, red and black garlic processed in low temperatures were compared. The chromaticity value of browning garlic was between that of fresh and black garlic. Red garlic was similar in browning intensity to fresh garlic. Also, total phenol, flavonoids, total pyruvate and thiosulfate contents were similar between fresh and black garlic. DPPH, ABTs, NO radical scavenging activity and reducing power of red garlic were significantly higher than fresh garlic, but lower than those of black garlic. α-Glucosidase inhibitory activity in red garlic was similar to that in black garlic. Antioxidant activities of red garlic were higher than fresh garlic but lower than black garlic, and it was confirmed that antioxidant activity by production of browning material through the thermal process was the main parameter of the biological activity in the aged red garlic.
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