Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Applying Edible Coating Materials for Extending Storage Life of Peeled-Garlic

가식성 코팅용액을 이용한 박피마늘의 저장성 증대

  • Hur, Sang-Sun (Department of Food Science and Biotechnology, Joongbu University)
  • 허상선 (중부대학교 식품생명과학과)
  • Received : 2015.07.23
  • Accepted : 2015.08.26
  • Published : 2015.09.30
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Abstract

This study was conducted to increase the shelf life of peeled-garlic by edible coating material such as carboxymethyl cellulose(CMC) with sodium benzoate, citric acid and lecithin. Peeled-garlic were stored in a storage chamber at $25^{\circ}C$ and were taken at regular intervals for analysis. The changes in weight loss, colour change, browning, decaying loss and texture of the coated samples with storage time were investigated in comparison with the uncoated samples to determine the delay in the deterioration time of the samples. The coatings contributed to a lower reduction in weight loss. The coatings decreased the browning and decaying loss loses in comparison to the uncoated peeled-garlic. It was possible to extend the storage period with lower weight loss until 32 days by coating peeled-garlic surfaces with emulsions containing CMC. It was found that the emulsion prepared using the mixture of lecithin, CMC, citric acid, sodium benzoate and water was suitable for the coating of peeled-garlic.

가식성 코팅물질의 하나인 carboxymethyl cellulose(CMC)을 주원료로 하여 CMC 혼합 코팅용액(Carboxymethyl cellulose + sodium benzoate + citric acid + lecithin)을 제조한 후 저장 기간에 따른 박피 마늘의 품질변화를 분석하였다. 각 농도에 따른 CMC 코팅 처리구의 경우 사용된 CMC의 농도가 높을수록 중량변화가 적게 나타났다. 저장기간에 따른 박피마늘의 색도 및 갈변화 현상은 CMC혼합 코팅처리구의 경우 L값의 변화는 대조구와는 큰 차이가 나타나지 않았으나 b값의 변화는 저장기간이 길어질수록 대조구와는 뚜렷한 차이를 나타내었고, 이러한 결과는 대조구가 저장기간 1주 이후부터는 급격한 갈변화 현상을 통해 상품적 가치를 손실되고 있는 결과와 일치하는 것을 알 수 있었다. 혼합 코팅용액에 의해 처리된 박피 마늘의 경도는 저장기간 4주까지 초기 박피마늘의 경도 측정값에 비해 최대 26.4 %, 최소11.7 %의 감소치를 보였으며, 저장기간에 따른 박피마늘의 부패율은 혼합 코팅용액으로 처리한 박피 마늘의 경우 큰 변화 없이 4주까지 20%내외의 부패율을 나타냈다.

Keywords

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