Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Elution Profiles of Volatile Compounds and Free Amino Acids during Alcohol Soaking of Garlic(Allum sativum L.)

마늘의 alcohol 침지 중 휘발성 향기성분과 침출유리아미노산 함량

  • 이영근 (부산대학교 생명응용과학부)
  • Published : 2007.02.28
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Abstract

Free amino acids and volatile compounds of fresh garlic and its liqueur were investigated to search elution profile of those components as basic data for development of garlic liqueur. The garlic was soaked in 20% alcohol solution and then sampled every week for 5 weeks. The major free amino acids were L-aspartic acid, L-glutamic acid, L-arginine, L-alanine, L-proline, L-asparagine and L-serine. Neutral amino acids such as L-threonine, L-proline, L-valine and L-leucine, and aromatic amino acids such as tyrosine and phenylalanine were eluted over 80% of those content in fresh garlic after 3 weeks of soaking, but acidic, basic and sulfur containing amino acids were below 80% even after 5 weeks. Sulfide compounds such as diallyl trisulfide, diallyl disulfide, methyl allyl disulfide, 2-vinyl-4H-1,3-dithi in, 3-vinyl-3,4-dihydro-1,2-dithiin, 3,5-diethyl-1,24-trithiolane, isobutyl isothiocyanate and diallyl sulfide were identified as major volatile compounds of fresh garlic by using GC/MS. Among volatile compounds of fresh garlic, allyl alcohol, diallyl disulfide, 3,5-diethyl-1,2,4-trithiolane, diallyl trisulfide and 3,4-dimethoxy furan were eluted to liqueur, but those compounds except 3,5-diethyl-1,2,4-trithiolane were lowered in liqueur during soaking. Furfural, 5-methylfurfural, 5-hydroxymethylfurfural, dimethyl pyrazine, furfuryl alcohol, 3-hydroxy-2-bytanone and 2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyr-an-4-one were generated newly and their content increased in liqueur during soaking.

마늘주의 산업화에 앞서 기초 자료로써 활용하고자, 마늘을 소주 등의 술에 침지하였을 때 마늘의 휘발성 기능성분과 유리아미노산이 술로 침출되는 정도 및 형태에 관하여 조사하고자, 생마늘을 20% 주정에 5주간 침지하고 매주 휘발성 향기성분과 유리아미노산들이 침출되는 양적 및 형태적 변화를 조사하였다. 마늘의 주요 유리 아미노산은 L-aspartic acid, L-glutamic acid, L-arginine, L-alanine, L- proline, L-asparagine 및 L-serine이었으며, 유리 아미노산들 모두 침지 기간의경과에 따라 침출량이 증가하였다. 또한, L-threonine, L-proline, L-valine 및 L-leucine 등의 중성아미노산들과 방향족아미노산인 tyrosine과 phenylalanine은 3주 후부터 80% 이상 침출된 반면에, 산성, 염기성 및 함황아미노산들은 5주 후에도 80% 미만이었다. 생마늘의 휘발성 향기성분은 diallyl trisulfide, diallyl disulfide, methyl allyl disulfide, 2-vinyl-4H-1,3-dithiin, 3-vinyl-3,4-dihydro-1,2-dithiin, 3,5-diethyl-1,24-trithiolane, isobutyl isothiocyanate 및 diallyl sulfide 등의 황화합물들이 주요 성분들이었다. 생마늘로부터 주정으로 침출된 휘발성 향기성분은 allyl alcohol, diallyl disulfide, 3,5-diethyl-1,2,4-trithiolane, diallyl trisulfide, 3,4-dimethoxyfuran의 5종이었으며, 침지기간의 경과에 따라 3,5-diethyl-1,2,4-trithiolane는 계속 침출량이 증가하였지만 그 외 4종은 감소하였다. 침 지기간 중 furfural, 5-methylfurfural, 5-hydroxymethylfurfural, dimethyl pyrazine, furfuryl alcohol, 3-hydroxy-2-bytanone과 2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one이 새로이 생성되었으며, 침지기간의 경과에 따라 침출주에 대부분 축적되는 양상을 보였다.

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References

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