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KMID : 1134820110400070962
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Journal of the Korean Society of Food Science and Nutrition
2011 Volume.40 No. 7 p.962 ~ p.968
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Chemical Components and Quality Characteristics of Waxy Corns Cultured by Conventional and Environmentally-Friendly Methods
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Song Eun-Mi
Kim Hyun-Young
Lee Sang-Hoon
Woo Sun-Hee
Kim Hong-Sig
Kyung Kee-Sung
Lee Jun-Soo
Jeong Heon-Sang
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Abstract
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The objective of this study was to investigate the chemical components and quality characteristics of three waxy corn varieties (Heukjinju, Ilmi, and Yeonnong1) harvested by conventional cultivation (CC) and environmentally-friendly cultivation (EFC). Crude ash content of the three corn varieties was higher, but not significant, in CC than EFC. Crude fat and protein contents in Heukjinju were higher in EFC, and amylose content was significantly higher (p＜0.001). Free sugar, minerals, and fatty acid composition patterns varied according to the cultivation method. Vitamin E contents in the Heukjinju and Yeonnong1 cultivars were higher in CC than EFC. Total polyphenol content of waxy corns on EFC and CC were 175.28 and 204.00 ㎎/100 g, respectively, in the Heukjinju cultivar (p＜0.01), and 148.64 and 158.42 ㎎/100 g, respectively, in the Ilimi cultivar, and 123.24 and 128.30 ㎎/100 g, respectively, in the Yeonnong1 cultivar. 2,2-Diphenyl-1-picrylhydrazyl radical scavenging activity on EFC and CC was 1.51 and 1.76 in Heukjinju cultivar (p＜0.05), 0.29 and 0.34 in Ilmi cultivar (p＞0.05), and 0.39 and 0.42 ㎎ trolox eq/g in Yeonnong1 cultivar (p＞0.05), respectively. However, 2,2"-azinobis-(3-ethylbenzothiazoline-6-sulfonate) radical scavenging activity was higher in CC than EFC.
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KEYWORD
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waxy corn, environmentally-friendly cultivation, conventional cultivation, chemical compositions, antioxidant activity
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