가루차 저온 저장 중 포장방법별 품질변화

Effect of Packing Methods on Green Powder Tea Quality during storage at Cold Temperature

  • 박장현 (전남 농업기술원 식물환경연구과) ;
  • 백창남 (고려대학교 식품과학과) ;
  • 김영옥 (전남 농업기술원 식물환경연구과) ;
  • 최형국 (전남 농업기술원 식물환경연구과)
  • Park Jang-Hyun (Plant Environment Research Division, Jeonnam Agriculture Research and Extention Services) ;
  • Bac Chang-Nam (Department of Food Science, Korea University) ;
  • Kim Yong-Ok (Plant Environment Research Division, Jeonnam Agriculture Research and Extention Services) ;
  • Choi Hyeong-Kuk (Plant Environment Research Division, Jeonnam Agriculture Research and Extention Services)
  • 발행 : 2005.02.01

초록

저온$(5^{\circ}C)$에서 가루차를 일반포장, 일반포장+항산화제, 일반포장+방습제처리시 4개월 이후 품질관련 성분인 총질소, 총아미노산, 탄닌, 카페인, 엽록소, 지방산 함량이 상당히 저하되었으며, 일반포장 + 진공처리는 일반포장 저장에 비해 1개월 정도 저장기간의 연장이 가능하였다. 제품의 표면색상은 저온$(5^{\circ}C)$보관시 일반포장에서는 저장 1개월에 a값(녹색)이 -16.43에서 저장 5개월에는 $42\%$정도 감소된 -10.11로 크게 감소되었다. 외관과 내질에 따른 관능평가시 저온$(5^{\circ}C)$저장의 경우 일반포장 내에서 1개월 경과시 89점이었으나 3개월 보관시 78점으로 가루차의 외관과 내질이 크게 열악해졌으며, 일반포장 + 진공의 경우 4개월 보관시 79점으로 일반포장보다 1개월 정도 더 연장보관이 가능하였다. 본 연구에서는 진공포장한 가루차를 $5^{\circ}C$에서 저장한 것이 처리구 중 가장 우수한 결과를 나타내었다.

The effect of packing methods on the green powder tea were investigated by examining quality changes during cold stroage. Packing was performed with aluminum packs having an antioxidant and a wateiproofing agent in vacuum Alumiunum packing with treatment or not showed little changes till 2 months but after this period remarkable quality degradation were found in total nitrogen, total amino acids, tannin, caffeine, chlorophyll and fatty acids. The color changes of gieeness were -16.43 in one month and -10.11 in five months, respectively. Alumininum packing in vacuum was showed extention of storage period above one month.

키워드

참고문헌

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