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 Enzymatic Hydrolysate of Hamcho (Salicomia herbacea) on Antioxidative Defense System in Rats Fed High Cholesterol Diet

함초(Salicornia herbacea)의 효소적 가수분해물이 고콜레스테롤 식이 흰쥐의 항산화방어계에 미치는 영향

  • Kim, Kyung-Ran (Dept. of Food Science and Nutrition, Catholic University of Daegu) ;
  • Choi, Jeong-Hwa (School of Food Science, Jinju International University) ;
  • Lee, Sung-Kwon (Dept. of Food Science and Nutrition, Catholic University of Daegu) ;
  • Woo, Mi-Hee (College of Pharmacy, Catholic University of Daegu) ;
  • Choi, Sang-Won (Dept. of Food Science and Nutrition, Catholic University of Daegu)
  • 김경란 (대구가톨릭대학교 식품영양학과) ;
  • 최정화 (진주국제대학교 식품과학부) ;
  • 이성권 (대구가톨릭대학교 식품영양학과) ;
  • 우미희 (대구가톨릭대학교 약학과) ;
  • 최상원 (대구가톨릭대학교 식품영양학과)
  • Published : 2006.12.29
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Abstract

The purpose of the present study was to investigate the effect of enzymatic hydrolysate (extract) of Salicomia herbacea L. (Korean name: Hamcho) on antioxidative defense system in rats fed high cholesterol diet. Rats were divided into six experimental groups which are composed of normal diet group, normal diet group supplemented with 2% Hamcho extract, high cholesterol diet group, high cholesterol diet groups supplemented with 1%, 2% and 4% Hamcho extracts. The activity of serum glutamate oxaloacetae transaminase in rats was not different among all experimental groups, while the activity of glutamate pyruvate transaminase in groups supplemented with Hamcho extract was significantly lower than that of high cholesterol control group. Supplementation of Hamcho extract (SHE) to the high cholesterol fed rats resulted in increased activities of hepatic superoxide dismutase and glutathione peioxidase. However, there was no significant difference in the activity of hepatic catalase among all experimental groups. SHE also resulted in decreased levels of hepatic thiobarbituric acid reactive substances and mitochondrial carbonyl values. Those effects were higher to some extent in 2% and 4% Hamcho extract groups than those of high cholesterol control group. These results suggest that enzymatic hydrolysate of Hamcho may reduce oxidative damage by activation of antioxidative defense system in rats fed high cholesterol diets.

본 연구는 함초의 효소적 가수분해물이 고콜레스테롤 식이 흰쥐의 항산화계와 지질과산화에 미치는 영향을 관찰하였다. 실험 동물은 체중 $150{\pm}10g$ 내외의 Sprague-Dawley 종 수컷 흰쥐를 사용하였으며, 정상식이 대조군(N), 정상식이에 함초 열수추출물 2% 공급군(NW-2), 고콜레스테롤식이 대조군(C) 및 고콜레스테롤식이에 함초 열수추출물을 각각 1%(CW-1), 2%(CW-2) 및 4%(CW-4) 공급한 군으로 하여 총 6군으로 나누었다. 식이 및 식수는 자유섭취하게 하였으며 3주간 사육한 후 희생시켰다. 체중증가량은 N군에 비해 C군에서 유의적으로 증가하였으며, 함초추출물 공급군들은 C군에 비해 다소 감소하였으나 유의적인 수준은 아니었다. 간조직 손상의 지표를 나타내는 GOT및 GPT 효소활성 변화를 측정한 결과 GOT는 각 군간에 유의성이 없었으나 GPT는 고콜레스테롤 식이 대조군에 비해 함초추출물 1% 및 2% 공급군에서 유의적으로 감소하여 함초의 효소적 가수분해물은 간독성에 영향을 미치지 않음을 알 수 있었다. 간조직 중의 항산화 방어계의 효소 활성을 측정한 결과 SOD 활성은 C군에 비해 함초추출물 공급군에서 다소 증가하였으며, 특히 함초추출물 2%를 공급한 CW-2군에서 유의적으로 증가하였다. GSHpx 활성은 함초추출물 공급군에서 증가하는 경향이었으며 특히 함초추출물 4% 공급군에서 유의적으로 증가하였다. Catalase 활성은 함초추출물 공급군에서 다소 증가하였으나 각 군간에 유의적인 차이가 없었다. 한편, 조직의 과산화적 손상의 지표가 되는 간조직의 TBARS 함량은 C군에서 N군에 비해 30% 증가되었으나 함초추출물 2%와 4% 공급군에서 C군에 비해 각각 23%와 26%씩 감소되었다. 또한, 간조직의 mitochondria에서 carbonyl 함량을 측정한 결과 N군에 비해 C군에서 29% 증가하였으나 함초추출물을 각각 1%, 2% 및 4% 공급한 군들에서 각각 31%, 30%및 26%씩 감소하여 정상군 수준이었다. 그러나 간조직의 microsome에서는 실험군 간의 유의적인 차이는 없었다. 이러한 결과로부터 함초의 효소적 가수분해물은 고콜레스테롤 식이 흰쥐 간조직의 항산화계를 강화시켜 조직의 산화적 손상을 감소시키는 항산화 효과가 있음이 규명되었다.

Keywords

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