효소처리에 의한 마늘 착즙액의 수율 및 향미성분변화

Effects of Enzyme Treatments on Yield and Flavor Compounds of Garlic Extracts

  • 발행 : 2007.06.30

초록

마늘의 향미성분을 가급적 그대로 유지하고 착즙수율을 향상시킬 수 있는 착즙방법을 개발하고자 하였다. 착즙수율을 향상시키기 위하여 protopectinase와 복합요소(cellulase, pectinesterase 및 ${\beta}-glucanase$ 등이 혼합된 효소)를 마늘펄프로부터 1차로 착즙하고 남은 잔사에 적용하여 마늘주스의 수율증가율과 향미성분 변화를 측정하였다. 착즙 전 마늘펄프 무게에 대하여 효소를 0.04, 0.08 및 0.12%씩 가하여 30, 60, 90 및 120분간 각각 가수분해하였다. 마늘주스의 수율 증가는 최대수율에 도달할 때까지 효소의 첨가량 및 반응시간의 증가와 더불어 증가하였다. 0.12%의 protopectinase를 첨가하여 90분간 가수분해하여 착즙한 결과 수율은 13.8%가 증가하였다. 복합효소를 0.12% 첨가하여 90분간 가수분해 후 착즙한 경우에는 최대수율인 14.5%의 증가효과가 있었다. GC로 휘발성 향기성분을 분석한 결과 효소를 처리하지 않은 대조구(control)와 총 피크면적으로 계산하여 비교할 경우 감소하였다. 0.12%의 protopectinase를 가하여 60분간 분해 후 제조한 마늘 주스의 휘발성 향기성분 향량은 약 6%가 감소하였다. 마늘주스의 유리당 함량은 0.12%의 protopectinase를 가하여 60분간 분해후 제조한 마늘 주스가 대조구와 가장 유사한 함량을 나타내었다. 유리아미노산 함량은 사용한 효소의 종류에 영향을 크게 받지 않는 것으로 나타났다. 이상의 결과로부터 0.12%의 protopectinase를 마늘착즙잔사에 가하여 60분간 분해 후 착즙한 액을 마늘펄프로부터 직접 착즙한 액과 혼합하면 착즙수율을 최대로 증가시키고 향미 성분의 변화를 최소화시킬 수 있는 것으로 나타났다.

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