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키토산-아스코베이트를 첨가한 물김치의 품질특성과 고콜레스테롤 식이 흰쥐의 혈청지질에 미치는 영향

Quality Characteristics of Mul-Kimchi with Chitosan-Ascorbate and Dietary Effect on Serum Lipids of Rats Fed with High Cholesterol Diet

김미정|신경옥|백경연|김순동
한국식품저장유통학회 (The Korean Society of Food Preservation)|2006.12|Food Science and Preservation|제13권 제6호|pp. 754-761

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참고문헌

주제분류식품과학

초록

본 연구는 chitosan-ascorbate (CA) 첨가(0.1%)가 물김치의 숙성에 미치는 영향과 고콜레스테롤식이 흰쥐의 혈청지질에 미치는 효과를 조사하였다. CA첨가 물김치는 무첨가에 비하여 탁도가 낮고, 보존성이 높으며, glucosamine함량이 무첨가에 비하여 1.84～2.90배, SOD활성이 59.00～64.24%로 높았으며 2025 kDa의 chitosan으로 제조한 CA2025가 가장 양호하였다. 동물실험은 SD계 흰쥐로 정상식이군(NC), 고콜레스테롤 식이군(HC), 고콜레스테롤 식이 김치국물 투여군(HC-KC), 고콜레스테롤 식이 CA함유 김치국물 투여군(HC-CA2025), 고콜레스테롤 식이 CA2025 1/2 농축액 투여군(HC-2CA2025)의 5개군으로 구분하여 5주간 사육하였다. 그 결과, HC-CA2025군과 HC-2CA2025군의 평균체중은 HC군에 비하여 각각 6.9%, 및 8.4%가 감소되었다. 혈청 총cholesterol의 함량은 HC-CA2025 및 HC-2CA2025군이 각각 88.33 및 85.00 mg/dL로 HC군보다 17.45 및 20.56%가 감소되었다. HC-CA2025 및 HC- 2CA2025군의 HDL-cholesterol 함량은 HC군에 비하여는 각각 7% 및 23%가 증가된 반면 LDL-cholesterol 함량은 각각 13% 및 26%가 감소되었고 동맥경화지수도 정상군에는 미치지는 못하나 현저하게 감소되었다. AST 및 ALT활성은 HC군에서 증가하는 경향을 보였으나, HC-KC, HC-CA2025, 및 HC-2CA205 군에서는 낮은 활성을 나타내었다. 따라서 CA2025는 물김치의 보존성과 품질을 향상시킬 뿐만 아니라 혈중지질 개선과 동맥경화지수를 떨어트리는 효과가 있어 산업적 활용성이 기대된다.감사의 글

Abstract

This study was to investigate the effect of chitosan-ascorbate (CA) prepared with different molecular weight (223, 746, 1110 and 2025 kDa) on the fermentation and quality of mul-kimchi, and also, the effect of the mul-kimchi juice fermented with 0.1% chitosan-ascorbate prepared with 2025 kDa chitosan (CA2025) on the serum lipids of rats fed with high cholesterol diet (HC). The mul-kimchi fermented in 0.1% CA2025 has lower turbidity, longer shelf-life, higher glucosamine content and SOD activity than those of control and the other treatments. In the animal experiment, the HC-CA2025 and HC-2CA2025 groups which were administered 0.5 mL per 100 g body weight of mul-kimchi juice fermented with 0.1% CA2025 and administered the same volume of the juice concentrated 1/2 per day fed for 5 weeks, respectively. The average body weight of the HC-CA2025 and HC-2CA2025 group was lower 6.9% and 8.4% than that of HC control group, respectively. Total serum cholesterol contents of these groups were 88.33 and 85.00 mg/dL, which were 17.45% and 20.56% lower than HC control group, respectively. While, HDL-cholesterol contents of these groups were 7% and 23%, higher the LDL-cholesterol content were 13% and 26% lower than those of HC control group, respectively. And also, though the atherogenic index, AST and ALT activities were not reached to normal control group, the values were remarkably lower than those of HC control group. This study indicates the possibility of utility for kimchi industry by adding chitosan-ascorbate, especially CA2025 showing not only quality enhancing and shelf-life prolongation but also improving serum lipids and atherogenic index in rats fed with high cholesterol diet.

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