Chemical Components and Quality Characteristics of Waxy Corns Cultured by Conventional and Environmentally-Friendly Methods
2011
Song, E.M., Chungbuk National University, Cheongju, Republic of Korea | Kim, H.Y., Chungbuk National University, Cheongju, Republic of Korea | Lee, S.H., Chungbuk National University, Cheongju, Republic of Korea | Woo, S.H., Chungbuk National University, Cheongju, Republic of Korea | Kim, H.S., Chungbuk National University, Cheongju, Republic of Korea | Kyung, K.S., Chungbuk National University, Cheongju, Republic of Korea | Lee, J.S., Chungbuk National University, Cheongju, Republic of Korea | Jeong, H.S., Chungbuk National University, Cheongju, Republic of Korea
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 less than 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 mg/100 g, respectively, in the Heukjinju cultivar (p less than 0.01), and 148.64 and 158.42 mg/100 g, respectively, in the Ilimi cultivar, and 123.24 and 128.30 mg/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 less than 0.05), 0.29 and 0.34 in Ilmi cultivar (p greater than 0.05), and 0.39 and 0.42 mg trolox eq/g in Yeonnong1 cultivar (p greater than 0.05), respectively. However, 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonate) radical scavenging activity was higher in CC than EFC.
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