Changes in Free Sugars, Organic Acids, Free Amino Acids and Minerals by Harvest Time and Parts of Acanthopanax koreanum

섬오갈피의 수확시기와 부위에 따른 유리당, 유기산, 아미노산, 무기물의 함량 변화

In order to determine the optimum harvest time of Acanthopanax koreanum Nakai, free sugars, organic acids, amino acids and minerals were investigated. Ash, crude fat and crude protein of 4-age's tree of Acanthopanax koreanum were $2.98%{\sim}3.90%,\;1.93%{\sim}2.34%,\;3.52%{\sim}4.23%$, respectively. Minerals were 835.9 mg/100g of K, 971.3 mg/100g of Ca, 168.7 mg/100g of Mg, 38.8 mg/100g, of Na, 18.6 mg/100g of Fe, and 8.5 mg/100g of Cu on average, respectively. Calcium content was increased distinguishably as late as harvest time, especially in stem and root. Glucose, fructose and sucrose content of stem were $0.71{\sim}0.75%,\;0.31{\sim}0.03%,\;and\;0.16{\sim}0.21%$, respectively. Organic acid was $381.0\;mg/100g{\sim}504.9\;mg/100g$, and was mainly consisted of succinic acid, citric acid and malic acid. Twelve kinds of free amino acids were detected. Total amino acids was $33.56\;mg/100g{\sim}48.60\;mg/100g$, and it was the highest on samples harvested at September. Arginine, phenylalanine and glutamic acid were the main free amino acids of stems.

섬오갈피(Acanthopanax koreanum Nakai)을 이용하기 위한 알맞은 수확시기를 구명하고자 수확시기와 부위에 따른 유용 성분 함량의 변화를 분석하였다. 4년생 섬오갈피 나무의 성분 조성은 부위에 따라 회분, 조지방, 조단백질이 각각 $2.98%{\sim}3.90%,\;1.93%{\sim}2.34%,\;3.52%{\sim}4.23%$이었다. 수확시기 및 부위별 무기성분 함량은 평균적으로 K가 835.9 mg/100g, Ca 971.3 mg/100g, Mg 168.7 mg/100g, Na 38.8 mg/100g, Fe 18.6 mg/100g, Cu 8.5 mg/100g이었다. Ca는 수확시기가 늦어질수록 크게 증가하였고, 특히 줄기와 뿌리에서 무기성분 중에서 가장 많았다. 줄기에서의 당 함량은 glucose, fructose. sucrose가 각각 $0.71{\sim}0.75%,\;0.31{\sim}0.03%,\;0.16{\sim}0.21%$이었다. 총 유기산 함량은 $381.0\;mg/100g{\sim}504.9\;mg/100g$으로 수확시기에 따라 다소 차이가 있었으며, 주요 유기산은 succinic acid, citric acid, malic acid이었다. 아미노산은 12종을 동정할 수 있었으며, 총 아미노산 함량은 수확시기에 따라 $33.56\;mg/100g{\sim}48.60\;mg/100g$으로 9월에 수확한 것이 가장 높았다. 줄기에 함유된 주요 아미노산은 arginine, phenylalanine, glutamic acid이었다.