Effects of Undaria pinnatifida on the Physicochemical Properties of Egg

미역첨가 사료가 계란의 이화학적 성질에 미치는 영향

  • Jo, Kil-Suk (Dept. of Food Science, Wonju National College)
  • Published : 2005.04.01

Abstract

This study was performed to investigate the effects of Undaria pinnatifida on the hysicochemical properties in egg from laying hens fed with $5\%,\;10\%$and $15\%$ supplementation, respectively. The increased amount of Undaria pinnatifida resulted in the decreased weight of egg, expecially in white ones. Darkness, greenness, and blueness of egg yolk and white were increased with the addition of Undanria pinnatifida, and such color changes were predominantly observed in egg york. Among the analyzed minerals, the contents of Ca, Fe and K were increased to $286.6\;mg\%$, $72\;mg\%$ and $430.6\;mg\%$, respectively. But amount of p was reduced to $134.2\;mg\%$. Total cholesterol contents were not significantly changed. Major fatty acids were palmitic, oleic and linoleic acid The contents of omega-3, omega-6 and essential fatty acids were increased to $2.5\%,\;17.6\%$, and $18.4\%$, respectively.

미역이 산란계의 계란 품질에 미치는 영향을 조사하기 위해 기존 일반 양계사료(대조구)에 미역을 $5\%(A)$, $10\%(B)$$15\%(C)$ 첨가하여 생산한 계란의 일반성분, 무게, 색깔, 무기질, 총콜레스테롤 함량 및 지방산 조성을 분석한 결과는 다음과 같다. 미역함량을 증가시킴에 따라서, 일반성분은 수분 함량의 감소를 제외한 나머지 성분은 거의 변화가 없었다. 계란의 무게는 점차 감소하는 경향이었는데, 특히 난백에서 크게 감소하는 경향이었다. 난황 및 난백의 색깔은 검붉은 색으로 변화하는 경향이고, 특히 난황에서의 색깔 변화는 명확하고 유의 차가 인정되었다. 칼슘 함량은 $266.5\;mg\%$에서 $286.6\;mg\%$로, 철 함량은 $4,1\;mg\%$에서 $7.2\;mg\%$로, 칼륨 함량은 $360.5\;mg\%$에서 $430.6\;mg\%$로 각각 증가하였으나, 인의 함량은 $187.5\;mg\%$에서 $134.2\;mg\%$로 오히려 감소하는 경향이다. 총 콜레스테롤 함량은 $1828.3\~1850.2\;mg\%$로 거의 변화가 없었다. 주요 지방산은 palmitic acid, oleic acid, linoleic acid이고, $\omega6$ 지방산은 $0.9\%$에서 $2.5\%$로, $\omega6$ 지방산은 $14.2\%$에서 $17.6\%$로, 그리고 필수지방산 함량은 $14.5\%$에서 $18.4\%$로 증가하는 경향이었다.

Keywords

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