Abstract
Volatile aroma concentrates of Pleurotus sajor-caju which stored at $20^{\circ}C$ incubator and cold room were obtained by simultaneous distillation-extraction method. The volatile components were identified by combined capillary gas chromatography-mass spectrometry and comparison of retention data on GC of those authentic compounds. Storage at room temperature resulted in significant decreased in their total aroma contents, whereas little changes at cold storage foured, even though appreciable changes were observed in GC pattern between the control and stored samples. Of 38 components identified, ${\delta}-decalactone$ increased while rest of the volatiles decreased rapidly during storage at room temperature, but at cold storage 2-methyl butanal, 1-octen-3-ol, cis,cis-1,5-octadien-3-ol and pentadecanoic acid decreased while 3-octanone, 1-octen-3-one, 3-octanol and 5-undecanol increased with the storage time. The weight losses and organoleptic properties changed extremely by the storage under room temperature, on the other hand, slight changes were found in cold storage.
Simultaneous distillation-extration method에 의해 국내에서 인공재배되고 있는 여름 느타리 버섯(Pleurotus sajor-caju)을 실온과 냉장하에서 저장하면서 휘발성 향기성분을 분리한 다음 GC-MS 및 GC에 의한 표준품과의 머무름시간 비교에 의해 향기성분의 변화를 검토하여 보았다. 총 aroma contentrates의 함량은 냉장 저장시는 큰차이를 보이지 않았으나 실온 저장시는 큰 감소의 경향을 보였다. 확인된 38종의 휘발성 화합물중 실온 저장시 ${\delta}-decalactone$만 약간증가하였으나 기타의 성분들은 현저히 감소한 반면 냉장 저장시는 2-methyl butanal, 1-octen-3-ol, cis,cis-1,5-octadien-3-ol, pentadecanoic acid등은 감소추세를 보였지만 3-octanone, 1-octen-3-one, 3-octanol, 5-undecanol등은 오히려 증가되는 경향을 보였다. 또한 중량 감소와 관능적 특성은 실온 저장시 냉장 저장보다 심한 변화를 보였다.