녹용의 성장 기간에 따른 아미노산, 지방산, 지질성분의 변화

Changes of Amino Acid, Fatty Acid and Lipid Composition by the Growth Period in Velvet Antler

엘크 녹용의 부위별, 성장일수별 성분변화를 측정하기 위하여 3년생 엘크 6두에서 각각 녹용성장일수 80일과 90일된 녹용을 채취하여 조단백질, 조지방, 조회분, 칼슘, 마그네슘, 아미노산, 지질성분 및 지방산을 분석하였다. 조 단백질과 조지방 함량은 성장일수 80일된 녹용이 조회분 함량은 90일된 녹용에 많았으며, 성장일수간 유의차는 중대의 조단백질에서만 인정되었다(p<0.05). 칼슘과 마그네슘의 함량은 부위별 유의차가 나타났으며(p<0.05) 모든 부위에서 90일에 많은 함량을 나타내었으나 성장일수 간 유의차는 나타나지 않았다. 녹용의 성장일수간 아미노산 함량은 aspartic acid, threonine, valine, leucine, phenylalanine 및 lysine에서 유의차가 인정되었으며(p<0.05), 필수아미노산의 함량은 모든 부위에서80일된 녹용이 많게 나타났다. 총지질, 중성지질, 인지질 등 지질성분은 성장일수 80일의 녹용의 함량이 많았고, sphingo-phospholipid의 함량이 glycerophospholipid의 함량보다 많았으며 성장일수 80일이 90일보다 많은 함량을 나타내었다. Lecithin 함량이 cephaline 함량보다 많았다. 총지방산, 불포화지방산의 함량은 성장일수 80일인 녹용이 많았으나 성장일수간 유의차는 인정되지 않았다. 필수지방산의 함량은 성장일수가 길어질수록 적어지고 하대쪽보다 상대쪽이 많은 것으로 나타났다.

This study was aimed at investigating the differences in chemical composition of antler according to growing days (80 d and 90 d after casting) and sections (upper, middle, base) in elk. Antlers of six bulls (aged 3 years) cutted on day 80 and 90 after casting were used in this trial and compared chemical composition such as crude protein, crude fat, crude ash, calcium, magnesium, amino acids, lipids, and fatty acids. The contents of crude protein and ether extract were higher in antlers cutted on day 80 than in antlers cutted on day 90, but that of crude ash was higher in antlers cutted on day 90. Significantly difference was observed in crude protein content between growing days in middle part of antler (p<0.05). Calcium and magnesium contents were higher on 90 d than 80 d, but there was no significant difference between growing days of antler. Based on the growing period of antler, there were significant differences (p<0.05) in aspartic acid, threonine, valine, leucine, phenylalanine and lysine, and essential amino acids content was higher in antlers cutted on day 80. Total lipid, neutral lipid, and phospholipid contents were higher in antlers cutted on day 80 than in those cutted on day 90, sphingo-phospholipid content was higher than glycerophospholipid content and values was higher in antlers cutted on day 80 than in those cutted on day 90. For total fatty acids, unsaturated fatty acids composition, there was no significant difference between growing periods of antlers, but values was higher on day 80 than on day 90. Essential fatty acids contents were lower in antler cutted on day 90 than antlers cutted on day 80 and higher for upper part than lower part.