Abstract
This study was carried out in order to investigate the effect of MA packaging material on quality and shelf life of ferulae mushroom (Pleurotus ferulae) at 1, 8, and $24^{\circ}C$ storage temperatures. We found that the fresh weight loss was less than 1.5% in all temperatures (1, 8, and $24^{\circ}C$) and non-perforated breathable films (1,300 cc, 3,000 cc, 5,000 cc, 7,000 cc, 10,000 cc, 15,000 cc, 20,000 cc, and $40,000cc/m^2{\cdot}day{\cdot}atm$ oxygen transmission rate) treatments. The proper MA packaging material of ferulae mushroom was 1,300 cc and 3,000 cc films at $1^{\circ}C$ storage. Because 1,300 cc and 3,000 cc films showed proper level, 15% carbon dioxide and 5% oxygen concentration for MA storage, although the shelf life was higher in 1,300 cc (42 days) than 3,000 cc (38 days), and the ethylene concentration as well as off-order showed lower in 3,000 cc than 1,300 cc film. The 3,000 cc film was the most suitable for ferulae mushroom storage at $8^{\circ}C$, because atmosphere composition in package was not statistically significantly different among the film treatments. In addition, 3,000 cc film showed the second low ethylene concentration and the longest shelf-life of 19 days. The ferulae mushroom stored at $25^{\circ}C$ showed a vigorous respiration and resulted in an extreme CA condition in package at $5^{th}$ day after storage, and showed the highest visual quality in 1,300 cc film. As the shelf life of ferulae mushroom at $1^{\circ}C$ and $8^{\circ}C$ storage were 8 times and 4 times longer than at $25^{\circ}C$ storage respectively, so the ferulae mushroom should be stored and distributed in cold chain system.
본 실험은 다양한 저장온도 조건에서 아위버섯에 적합한 MAP용 포장재 구명을 위해 수행하였다. 저장중 생체중 감소는 저장온도가 낮을수록 적었는데, 모든 온도 처리(1, 8, $24^{\circ}C$)에서 저장 종료일까지 1.5% 이하로 낮았다. 1저장에서는 산소투과율이 $1,300cc/m^2{\cdot}day{\cdot}atm$ 인 필름 처리구가 가장 큰 저장수명(42일)을 보였으며 저장중 포장내 산소/이산화탄소의 대기조성 조건도 가장 적합한 MA조건인 5%/15% 수준이었으나, 높은 에틸렌 농도와 이취를 보인 반면 3,000cc 처리구는 1,300cc 처리구와 비슷한 대기조성 조건을 갖추고 낮은 에틸렌 농도과 이취를 보였다. 따라서 $1^{\circ}C$에서는 1,300cc와 3,000cc 필름이 적합하였다. 저장중 대기조성이 필름처리간 차이가 없었던 $8^{\circ}C$ 저장에서는 에틸렌 농도가 두 번째로 낮았고 외관상 품질이 가장 높아 저장수명이 19일로 가장 길었던 3,000cc 필름이 적합하였다. 저장 온도가 높아 호흡이 급격히 빨라져 극도의 CA 조건이 만들어졌던 $25^{\circ}C$에서는 외관상 품질에서 가장 양호하였던 1,300cc 필름으로 적합하였다. 또한 온도별 저장수명이 $25^{\circ}C$에 비해 $8^{\circ}C$는 4배, $1^{\circ}C$는 9배나 연장되어 수확 후 저온유통이 반드시 필요하다고 판단되었다.