Food Science of Animal Resources (한국축산식품학회지)

Korean Society for Food Science of Animal Resources (한국축산식품학회)
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Functional Properties of Egg Shell Membrane Hydrolysate as a Food Material

난각막 분해물의 식품 소재로서 기능적 특성

  • 전태욱 (성균관대학교 식품·생명자원학과) ;
  • 박기문 (성균관대학교 식품·생명자원학과)
  • Published : 2002.09.01
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Abstract

The functional properties of egg shell membrane hydrolysate by Bacillus licheniformis(EESMH) and NaOH-ethanol(AESMH) as a food material were investigated.. The yield of egg shell membrane hydrolysate was about 15% by Bacillus licheniformis, whereas that was 70% by NaOH-ethanol. Histidine content was higher in EESMH (18.69%) than in AESMH (2.56%). Both EESMH and AESMH showed high protein solubility (>95%). Emulsi-fying activity and stability of EESMH were higher than those of AESMH. foaming capacity and stability of AESMH were 2 times higher than those of EESMH in the pH ranges from 2 to 12. The AESMH had antioxidative activity whereas EESMH had not. Therefore, both AESMH and EESMH can be used for industrial food materials from the results of functional properties.

본 연구는 난각막(egg shell membrane)에 keratinase를 생성하는 Bacillus licheniformis를 배양하여 제조한 효소분해 난각막분해물(enzyme-degradation egg shell membrane hy-drolysate, EESMH)과 IN NaOH-Ethanol로 분해한 알칼리분해 난각막분해물(alkalic-degradation egg shell membrane hy-drolysate, AESMH)을 제조하여 식품소재로 활용하고자 성분분석 및 분해물의 유화성, 거품형성력, 항산화력 등의 식품학적 기능을 확인하였다. 즉, EESMH의 생산수율은 약 15% 였고 AESMH의 경우 약 70%의 수율로 가수분해물이 생성됐으며 아미노산 분석 결과 EESMH와 AESMH의 아미노산 구성은 주성분이 aspartic acid, glutamic acid, cystine으로 큰 차이가 없었으나 EESMH의 경우 histidine이 18.69%로 AESMH의 2.56%에 비해 6배 정도 함량이 높게 나타났다. 단백질의 기능적 특성 측면에서 용해성은 EESMH와 AESMH 모두95%이상의 높은 용해성을 나타내었다. 유화 활성의 경우 EDESDBB가 더 효과가 있었으며, 유화 안정성도 EESMH가 AESMH보다 약 8% 안정하였다. 거품 형성력은 AESMH가 EESMH보다 모든 pH범위에서 약 2배 정도 높았으며 안정성도 우수하였다. 항산화력의 경우AESMH가 항산화력이 높은 것으로 확인하였고 EESMH의 경우 전체적으로 매우 약하게 나타났다.

Keywords

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