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KMID : 1134820100390050719
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Journal of the Korean Society of Food Science and Nutrition
2010 Volume.39 No. 5 p.719 ~ p.724
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Physicochemical Property and Antioxidant Activity of Daehak Waxy Corns with Different Harvest Times
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Lee Sang-Hoon
Hwang In-Guk
Kim Hyun-Young
Lee Ha-Kyoo
Lee Seong-Hee
Woo Sun-Hee
Lee Jun-Soo
Jeong Heon-Sang
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Abstract
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This study investigated the physicochemical characteristics and antioxidant activities of Daehak waxy corns harvested at different times. Daehak waxy corns were harvested at 4 days before suitable time (BST), suitable time (ST) and 4 days after suitable time (AST). As harvest time was delayed, weight, length and width of kernel, the crude ash, lipid and protein contents significantly increased. Fructose, glucose and sucrose contents of BST were higher than those of ST and AST. Copper, sodium, calcium and potassium contents of BST in Daehak waxy corns increased on different times, and contents of ferrous and zinc did not show any significantly difference. The major fatty acids were oleic acid (48.58～49.96%), palmitic acid (19.50～20.64%) and palmitoleic acid (18.70～23.77%) in Daehak waxy corns with different harvest times. The highest total polyphenol content and total antioxidant capacity of EtOH extracts from AST were 104.45 ㎎/100 g and 20.53 ㎎ AA eq/100 g, respectively. There was a high correlation between total polyphenol content and IC?? value of electron donating ability of EtOH extracts from Daehak waxy corns harvested at different times, or total antioxidant capacity (p＜0.01).
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KEYWORD
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Daehak waxy corn, morphological characteristics, proximate composition, antioxidant activities
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