Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Effect of Functional MA Packaging Film on Freshness Extension of #Fuji# Apples

기능성 MA 포장재가 #후지# 사과의 신선도에 미치는 영향

  • Published : 2000.02.01
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Abstract

To investigate the effect of packaging condition on functional MA films laminated (30CE, 50CE), corrugated paperboard box (control), 30LDPE, and 50LDPE pouches on the freshness extension of Fuji apples, the weight loss, firmness, total ascorbic acid, titratable acidity, soluble solids content and appearence were evaluated at 5$^{\circ}C$ after 75 days. Weight loss of 30CE and 50CE, and 30LD and 50LD was 0.4 to 0.5%, and 0.2%, but control was 2.7%. Firmness in film packages was higher than that of control, and CE packagings were higher than LD. Total ascorbic acid content of Fuji apple in control after 75 days was 2.12 mg%, that of control was decreased by 42%, those of LD packagings were 31% and 29%, and those of CE were 24% and 22%. Titratable acidity and soluble solids content in control changed more than that of MA film packagings. Overall appearence of 'Fuji' apples in CE packagings was better than that of control.

기능성 필름을 코팅한 골판지 상자에 사과를 저장하면서 품질유지 상태를 조사하고자 대조구로 기존에 유통 중인 골판지 상자와 두께 0.03, 0.05 mm의 LDPE필름(30LD와 50LD)과, 두께 0.03 mm, 0.05 mm의 기능성MA 필름을 골판지 상자에 코팅한(30CE와 50CE) 후 이 상자에 후지사과를 15 kg씩 포장하여 $5^{\circ}C$에 75일간 저장하면서 신선도 변화를 비교 연구하였다. 중량 감소는 저장 75일 후 대조구는 2.7%, LD와 CE 포장구들은 0.2~0.5% 감소했다. 경도는 대조구보다는 필름포장구들에서 변화가 적었고 LD보다는 CE 포장구에서 변화가 더 적게 나타났다. 비타민 C 함량은 초기의 3.67 mg%에서 대조구는 42%, LD 포장구들은 31~29%, CE 포장구들은 24~22%가 감소하였다. 산도 및 가용성 고형분의 경우 대조구가 필름포장구들에서 변화가 심했으며, 필름포장구들 중에서는 LD 포장구보다 CE 포장구에서 변화가 적게 나타났으며, 부패도 대조구보다는 LD와 CE 포장구에서 적게 나타났다.

Keywords

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