KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY (한국포장학회지)

Korea Society of Packaging Science and Technology (한국포장학회)
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Quality of 'Fuji' Apple Packed with Functional MA Film to the Films Thickness

두께별 기능성 MA 필름으로 포장하여 저장한 사과의 품질

  • Hong, Sang Tai (Pyeongtaek University Department of International Logistics) ;
  • Park, HyungWoo (Korea Society of Packaging Science & Technology) ;
  • Park, Yang-Kyun (Mokpo National University Department of Food Engineering)
  • Received : 2019.08.01
  • Accepted : 2019.08.09
  • Published : 2019.08.31
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Abstract

The quality of 'Fuji' apple was analyzed the film thickness conditions and packed with functional MA film during 24 weeks storage at $0^{\circ}C$ to weight loss, hardness, acidity and SSC, decay ratio, and vitamin C. The weight loss of apple packed functional MA film was higher than that of contro.Value of the weight loss of apple packed in the control and functional MA filmswere 8.2% and 0.4-0.5%, respectively. The change of hardness and titratable acidity was also lower than that of control. The decay ratio of apple packed with functional MA films were 2.4~4.7%, but that of control was 6.8%. The decay ratio of apple was the lowest at 0.025mm functional MA film. Changes of vitamin C also was lower than that of control. Based on the results, we suggested that the functional MA film with 0.025mm thickness is desirable for keeping the quality of the 'Fuji' apple produced at Geochang, Korea.

경남 거창 산 후지사과를 0.025, 0.035, 0.045 mm 두께의 기능성 MA 필름을 생산하여 사과를 24주간 $0^{\circ}C$에 저장하면서 중량변화, 경도, 산도, 당도, 부패율 및 비타민 C 등의 품질변화를 조사하였다. 저장24주 후 중량변화는 대조구는 8.2% 감소하였으나 기능성 필름 포장구들은 0.4~0.5% 감소한 것으로 나타났고 경도와 당도변화의 경우도 대조구 보다 기능성 MA 포장구에서 경도는 다소 높게 유지되고 있었다. 부패 율은 저장24주 후 대조구는 6.8%, 0.045 mm 포장구는 4.7%, 0.035 mm 포장구는 3.4%, 0.025 mm 포장구는 2.4%로 0.025 mm 두께의 포장구에서 부패 율이 가장 낮았다. 비타민 C 변화는 저장 24주 후 초기치 8.46mg%에서 대조구는 2.5mg%로 초기치에 비해 70% 감소하였고 기능성 포장구들 간에는 3.9에서 3.0mg% 정도로 유지되고 있었다. 이상의 결과에서 후지사과의 저장용 기능성 MA포장재의 적정 필름 두께는 0.025 mm가 적합한 것으로 나타났다.

Keywords

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