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Effect of pretreatment and packaging methods on quality of cold vacuum dried peach

전처리 및 포장방법이 냉풍감압건조 복숭아의 품질에 미치는 영향

  • Kwon, Gi-Man (Department of Food Science and Technology, Catholic University of Daegu) ;
  • Kim, Jae-Won (Department of Food Science and Technology, Catholic University of Daegu) ;
  • Youn, Kwang-Sup (Department of Food Science and Technology, Catholic University of Daegu)
  • 권기만 (대구가톨릭대학교 식품공학전공) ;
  • 김재원 (대구가톨릭대학교 식품공학전공) ;
  • 윤광섭 (대구가톨릭대학교 식품공학전공)
  • Received : 2013.04.03
  • Accepted : 2013.06.20
  • Published : 2013.06.30

Abstract

This study was conducted to investigate the effects of pretreatment and different packaging methods on the physicochemical properties of cold vacuum-dried peaches. All the dried peach samples were stored such as $N_2$ gas substitution, vacuum and passive packaged with polyethylene (PE) film and oriented polypropylene (OPP)/aluminum (Al)/PE film at $40^{\circ}C$ for 50 days. The weight change, pH, soluble solids content, titratable acidity, soluble solid-acid ratio (SS/TA), delta E, browning degree and phenolic compounds were analyzed. The weight change and pH were lower in the 0.1% vitamin C-treated group and were significantly lowest in the vacuum-treated OPP/AL/PE. The soluble solids content and the SS/TA were higher in the non-treated groups than in the vitamin C-treated groups. According to the packaging methods, the $L^*$ values were higher in the vacuum, $N_2$ gas and passive package, in that order. In addition, the browning degree and the delta E value were lower in the pretreated groups and significantly lowest in the vacuum-treated OPP/AL/PE with 0.1% vitamin C group. The phenolic compounds were high for the pretreated groups, according to the packaging methods (vacuum > $N_2$ gas> passive), and the OPP/AL/PE was significantly higher than the PE. These results suggest that different packaging materials and pretreatment methods affected the quality of the dried peaches, and the vacuum-OPP/AL/PE film packaging group showed a high quality.

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  1. Changes of Peach (Prunus persica L. Batsch) Quality during Storage after Treatment with Aqueous Chlorine Dioxide vol.27, pp.5, 2014, https://doi.org/10.9799/ksfan.2014.27.5.881