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Comparative Studies on the Amino Acids and Flavor Compounds Among Some Varieties of Perilla Leaves Cultivated in Miryang Area

밀양지역 들깨품종별 잎의 아미노산 조성 및 향기성분 비교

  • Published : 2004.12.01

Abstract

The present investigation was carried out to determine the qualitative difference between 4 varieties of perilla leaves cultivated Miryang area, particularly focusing on the amino acid composition and flavor compounds. Aspartic acid, glutamic acid, glycine, alanine, arginine, and threonine were the major amino acids, and tyrosine and cysteine and methionine containing sulfur were detected as little amount in protein of all perilla leaves. All perilla leaves contained about 34 kinds of free amino acids, and the major free amino acids were same as the protein bound amino acids. However, no significant difference among 4 varieties of perilla leaves was observed in the profiles of protein bound and free amino acids composition. Flavor compounds analyzed by GC-MSD following to extraction of flavor by SDE (Simultaneous Steam Distillation-Extraction) were detected as 51 kinds from 'Leafy perilla 1', 47 kinds from 'Yupsil perilla', 46 kinds from 'Miryang 9' and 'YCPL. The major volatile compound was perilla ketone, its concentration was $145.75\;{\mu}g/g$ in 'Miryang 9', $187.00\;{\mu}g/g$ in 'YCPL', $301.59\;{\mu}g/g$ in 'Leafy perilla l' and $551.42\;{\mu}g/g$ in 'Yupsil perilla', but the other flavor compounds, 3-hexen-l-ol, trans-2-hexenal, $\beta-caryophyllene,\;\alpha-farnesene$ and etc, were less than $20\;{\mu}g/g$.

우리나라 들깻잎의 주산지인 밀양지역에서 재배하고 있는 4종의 품질 특성을 조사하고자 아미노산과 휘발성 향 성분을 분석하여 비교하였다. 단백질구성아미노산에서 주요 아미노산은 aspartic acid, glutamic acid, glycine, alanine, arginine, 및 threonine 등 이었고, 그 외에 lysine, leucine, isoleucine 등도 다소 검출되었으나, tyrosine과 함황아미노산인 cysteine과 methionine의 함량이 가장 적 게 나타났으며, 유리 아미노산은 4종 모두에서 약34종이 검출되었다. 그리고 유리아미노산의 조성과 단백질구성아미노산의 조성에서 품종간의 차이는 거의 없는 것으로 나타났다. 들깻잎의 휘발성 향기성분을 GC-MSD로 분석한 결과, 잎들깨1호는 52종, 엽실들깨는 48종, 그리고 밀양9호와 YCPL은 47종이 분리되어 검출되었다. 깻잎의 휘발성 화합물중에서 가장 많은 함량으로 검출된 perilla ketone은 엽실들깨 $551.42\;{\mu}g/g$, 잎들깨1호 $301.59\;{\mu}g/g$, YCPL $187.00\;{\mu}g/g$, 그리고 밀양9호는 $145.75\;{\mu}g/g$이었으며, 그 외 3-hexen-1-ol, trans-2-hexenal, $\beta-caryophyllene$ 그리고 $\alpha-farnesene$등이 검출되었으나 이 화합물들의 함량은 $20\;{\mu}g/g$을 초과하지 않았다.

Keywords

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