Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Hot Water Treatment and Modified Atmosphere Packaging Affect the Freshness Extension of 'Fuji' Apples

온수처리와 MAP 저장이 '후지' 사과의 신선도에 미치는 영향

  • Published : 2007.02.28
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Abstract

To investigate the effects of hot water treatment and modified atmosphere packaging (MAP), compared with non-packaging, of 'Fuji' apples during 18 weeks of storage at $0^{\circ}C$, apple weight loss, firmness, titratable acidity, total ascorbic acid and sensory characteristics were measured After 18 week of storage, the weight loss of MAP-treated apples was 1%, while untreated controls lost 22% of weight Weight loss reduction film packaging was more effective than that afforded by hot water treatment. The firmness reductions in control apples, those receiving hot water treatment those receiving packaging only, and those receiving both hot water treatment and packaging, were 37%, 22%, 10% and 6%, respectively. The titratable acidity was 40% in control apples and respectively, 37%, 32% and 27% in the three groups mentioned above. The total ascorbic acid contentuntreated control apples decreased by 70% after 18 weeks of storage. The total ascorbic acid contentof apples receiving both hot water use of both packagingand hot water treatment to preserve 'Fuji' apple quality.

온수처리와 MAP에 의한 '후지' 사과의 저장 후 품질의 변화를 알아보기 위해 기존의 방법과 비교하여 18주 동안 중량감소율, 경도, 적정산도, 비타민 C 함량, 기호도 조사를 실시하였다. 그 결과 저장 18주후 중량 감소율은 대조구 22%, 포장구는 1% 이하의 중량 감소율을 보였으며, 온수처리에 의한 효과보다는 필름 포장으로 적은 중량 감소율이 나타났다. 경도는 초기값에 비해 대조구는 25 %, H-N구는 22%, C-MAP구는 10%, H-MAP구는 6%의 감소율을 나타내어 온수처리와 포장을 병행 하였을 때 적은 감소율을 보였으며, 적정 산도 또한 대조구, H-N구, C-MAP구, H-MAP구 각각 40%, 37%, 32%, 27%로 H-MAP 처리구가 가장 좋은 결과를 보였다. Vitamin C 함량의 경우 대조구는 초기보다 70%의 가장 큰 감소율을 나타내었고 H-MAP구는 56%로 대조구 보다 14%의 적은 감소율을 나타내었다. 기호도 조사에서는 모든 항목에서 H-MAP구가 다른 처리구보다 높은 점수를 받았다. 이상의 결과로 볼 때 '후지' 사과 저장 시 온수처리와 MAP 저장을 병행 하였을 때 가장 좋은 효과를 나타내었다.

Keywords

References

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