홍삼을 이용한 청국장의 기능적 특성 비교 (Comparison of Functional Properties of Cheonggukjang by Using Red Ginseng)

서지정보

· 발행기관 : 한국식품영양과학회
· 수록지 정보 : 한국식품영양과학회지 / 37권 / 3호 / 261 ~ 268페이지
· 저자명 : 박난영, 성종환, 최명숙, 문광덕, 권중호, 정용진

초록

청국장을 다양한 식품소재로 활용하기 위하여 각 조건별 청국장(CGJ), 홍삼청국장(RCJ) 및 홍삼청국장 가수분해물(RCH)의 품질 및 기능적 특성을 조사하였다. 일반성분은 RCJ가 탄수화물 함량이 다른 시료에 비하여 높았으며 조단백 함량은 낮았다. 유리아미노산 함량은 CGJ에 비하여 RCH가 2,157.16 mg%로 약 2배정도 높았으며 필수아미노산 함량도 812.18 mg%로 가장 높았다. SDS-전기영동 패턴분석 결과 CGJ와 RCJ는 33 kDa 이하의 분자량을 나타내었고, RCH는 17 kDa 이하의 저분자 분자량으로 나타나 저분자화 가수 분해되었음을 확인할 수 있었다. DPPH free radical 소거활성, superoxide radical 소거활성, ACE 저해활성은 시료 간에 유의적 차이는 크게 나타나지 않았으나, RCH가 가장 높은 활성을 보였고, 혈전용해 활성은 CGJ가 111.38 unit로 가장 높게 나타났다. 또한 관능평가에서 홍삼 특유의 쓴맛은 있었으나 전반적 기호도는 높게 나타났다. 이상의 결과 청국장(CGJ)에 비하여 홍삼청국장(RCJ) 및 홍삼청국장 가수분해물(RCH)이 기능성 강화 및 불쾌취가 감소되어 다양한 식품 소재로 활용이 가능할 것으로 기대된다.

영어초록

To utilize Cheonggukjang as a raw material of diverse foods, the quality characteristics of Cheonggukjang and its processed food were compared. Cheonggukjang (CGJ), red ginseng Cheonggukjang (RCJ), and red ginseng Cheonggukjang hydrolysate (RCH) were powdered, and their quality and functional characteristics were examined. The result showed that in regard to general components, carbohydrate content of RCJ was higher than other samples while crude protein content was lower. Free amino acid content of RCH was 2,157.16 mg%, which was approximately 2 times higher than CGJ, and the content of essential amino acid was 812.18 mg%, which was the highest. The result of SDS-electrophoresis pattern showed that CGJ and RCJ showed a molecular weight smaller than 33 kDa, and RCH showed a smaller than 17 kDa low molecular weight, confirming the hydrolysis to small molecular weight. Among the samples, free radical scavenging activity, superoxide radical scavenging activity, and ACE inhibitory activity did not show a significant difference; nonetheless, RCH showed the highest activity while CGJ showed the highest fibrinolytic activity of 111.38 unit. In addition, in sensory evaluation, the peculiar bitter taste of red ginseng could be detected while the overall acceptability was improved. Based on the above results, in comparison with CGJ, as for RCJ and RCH, their function was strengthened and unpleasant odor was reduced, and thus it is anticipated that they could be used as a raw material of diverse foods.

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