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Effect of Characteristics of Grain and Flour on Color of Noodle Dough Sheet and Simple Test for Fe Content in Korean Wheat Cultivar

종실과 밀가루 특성이 국수 면대 색깔에 미치는 영향과 철 함량 간이 검정

  • Received : 2013.07.24
  • Accepted : 2014.02.21
  • Published : 2014.03.30

Abstract

This study was carried out to characterize the color of noodle sheet made from Korean wheat cultivars, which were then evaluated on grain and flour properties, in order to enhance the breeding-line selection for noodle wheat. In particular, a rapid method was applied to investigate the effects of iron (Fe) contents on the lightness of noodle sheet for the selection of breeding-lines with high Fe contents. Wheat flour lightness of Korean wheat cultivars had a negative correlation with ash (r = -0.634, P<0.01), protein (r = -0.635, P<0.01) and total polyphenols (r = -0.493, P<0.05). The noodle sheet color showed a positive correlation with lightness, but a negative correlation with test weight, 1000 kernels weight, PPO activity and total polyphenol contents. Also, upon the wheat flour properties, the ash, protein and total polyphenol contents had a negative correlation with the lightness of noodle sheet, and this relation varied depending on the year and cultivars. The Fe content had a negative relation with the color of wheat flour and the lightness of noodle sheet, and the potassium hexacyanoferrate(II) trihydrate (PHT) test resulted in blue color. There was no correlation between Fe contents and the color of grains with PHT treatment, but after grounding the whole grains, a negative correlation was found between Fe contents and redness (r = -0.665, P<0.001) and yellowness (r = -0.658, P<0.001) of whole wheat flour with PHT treatment. On the other hand, the lightness of wheat flour with PHT treatment showed a negative relation with Fe content.

본 연구는 국내 밀 품종의 국수 색깔 및 이와 관련된 종실 및 밀가루 특성 평가를 통하여 국수 면대 색깔 향상을 위해 선발에 이용할 수 있는 방법을 개발하고, 특히 철함량이 국수면대 밝기에 미치는 영향을 평가하여 영양학적으로 우수한 철 고함유 계통 선발을 위한 간이검정법의 적용을 위해 수행하였다. 국내 밀 품종의 밀가루 밝기는 회분(r = -0.634, P<0.01), 단백질 함량(r = -0.635, P<0.01)및 총 폴리페놀함량(r = -0.493, P<0.05)과 부의 상관을 나타내었다. 면대 색깔은 밀가루 명도(r = 0.684, P<0.001)와 정의 상관을 보였고, 종실특성에서 리터중, 천립중, PPO 활성 및 총 폴리페놀 함량과는 부의 상관을 보였다. 또한 밀가루 특성에서 회분, 단백질 함량과 총 폴리페놀함량은 면대 밝기와 부의 상관을 보였고, 연차간 및 품종간 변이에 영향을 받는 것으로 나타났다. 철은 밀가루 색 및 국수 면대 밝기와 부의 상관을 나타냈고, 간이검정법으로 Potassium hexacyanoferrate(II) trihydrate(PHT) 처리를 한 결과 푸른색으로 염색되었다. 종실을 PHT로 염색하여 측정한 색도와 종실의 철 함량은 상관을 보이지 않았으나, 종실을 분쇄한 통밀가루에서는 PHT로 염색된 통밀가루의 적색도(r = -0.665, P<0.001)와 황색도(r = -0.658, P<0.001)와 부의 상관을 나타내었다. 또한 PHT로 염색된 밀가루의 밝기는 종실의 철 함량(r = -0.640, P<0.01)과 부의 상관을 나타내었다.

Keywords

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