한국식품영양과학회지 (Journal of the Korean Society of Food Science and Nutrition)

  • 제30권5호
  • /
  • Pages.1004-1009
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  • 2001
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  • 1226-3311(pISSN)
  • /
  • 2288-5978(eISSN)
한국식품영양과학회 (The Korean Society of Food Science and Nutrition)
권호 표지

누에고치 산 가수분해물의 단백질의 질적 평가와 고콜레스테롤, 고지질, 고당질식이 흰쥐의 혈장지질에 미치는 영향

Protein Quality Evaluation and Effect of Plasma Lipid Contents of Acid Hydrolysates of Cocoon inn Rats Fed by High Cholesterol, High Triglyceride and High Sucrose Diet

  • 황은희 (원광대학교 식품영양학과) ;
  • 강병기 (원광대학교 한의과대학 내과학교실) ;
  • 김복량 (원광대학교 의과대학 생화학교실) ;
  • 이형자 (원광대학교 식품영양학과)
  • 발행 : 2001.10.01
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초록

누에고치를 2N HCl 용액으로 11$0^{\circ}C$, 48시간 가수분해한후 중화하여 냉동건조하여 얻는 누에고치 산가수분해물의 아미노산 조성은 glycin이 43.25%, alanine이 34.39%, serine 10.05%, valine이 2.44%였고 필수 아미노산은 7.12% 차지하였다. 누에고치 산가수분해물의 사료이용효율은 카제인과 같았다. 1~5% 실크분말의 첨가에 의한 간의 무게, 간효소활성(GOT, GPT), 혈청알부민, 혈청 총단백질의 함량은 영향이 없어 단백질의 질이 낮은 것으로 평가되었다. 흰주에 고콜레스테롤, 고지질, 고설탕사료를 각각 섭취시키면서 5% 누에고치 산가수분해물을 첨가하였을 때 혈장 지질농도에 미치는 영향은 중성지질의 감소, 인지질과 HDL의 증가 등 혈액지질조정에 바람직한 결과를 보였으나, LDL과 총콜레스테롤을 높이는 좋지 못한 효과도 나타냈다. 그러므로 누에고치 산가수분해물은 단백질 급원 식품으로보다는 이를 이용한 펩타이드의 생리기능 또는 식용 이외의 화장품재료, 의약용재료, 포장제 등과 기타 물리 화학적 특성을 기초로 한 다양한 범위의 응용이 더욱 적합하다고 생각되며, 혈액지질 개선효과에 대해서는 심층적인 연구가 필요하다.

Acid hydrolysates of cocoon was gained by acid hydrolysis of 2 N HCl, 11$0^{\circ}C$, 48 hours, neutralization and desalting from the cocoon. The amino acid compositions of acid hydrolysates of cocoon were glycine 43.25%, alanine 34.39%, serine 10.05% and valine 2.44%. The contents of essential amino acid was 10.05%. Food efficiency ratio of acid hydrolysates of cocoon group was equal to the reference protein, casein. Liver weight, GOT, GPT activity, serum albumin and serum total protein level of rats were not significantly different among the experimental groups. Therefore, the protein acid hydrolysates of cocoon is not of high quality. When the rat fed with high cholesterol, high lipid, and high sucrose diet was administered with 5% acid hydrolysates of cocoon, its plasma lipids concentration of acid hydrolysates of cocoon was favorably affected: its triglyceride was decreased, and the level of phospholipid and HDL cholesterol were increased. There was also an unfavorable effect: the levels of LDL cholesterol and total cholesterol went up. Therefore, the acid hydrolysates of cocoon is not a good protein food source, but is can be used a cosmetic, medical, or packing material. Further research will reveal how it will affect or improve plasma lipid.

키워드

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