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NTIS 바로가기한국식품과학회지 = Korean journal of food science and technology, v.49 no.4, 2017년, pp.408 - 414
이승조 (서울여자대학교 식품공학과) , 최혁준 (비케이바이오) , 민세철 (서울여자대학교 식품공학과)
Effects of pulsed electric field (PEF) processing on growth inhibition of indigenous aerobic microorganisms and the quality of mandarin and carrot juices were investigated. Mandarin juice was PEF-treated at 15-23 kV/cm for
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
가열 살균이 갖는 단점은? | 주스 제품의 저장성 및 미생물 안전성을 높이기 위해 열교환기를 이용한 가열 살균이 주로 사용되고 있다(3,4). 그러나 가열 살균 중 다량의 열이 주스로 유입되면서 영양성분 파괴, 색 변화, 향기 감소, 그리고 새로운 화합물 형성 등 주스 품질에 부정적인 영향을 줄 수 있다(5). 최근 과채류 고유의 향미와 영양소가 유지된 고품질 신선 과채류 주스에 대한 소비자들의 요구가 증가함에 따라 기존 가열 살균 방법을 대체할 새로운 살균 기술개발이 활발히 연구되고 있다(6,7). | |
감귤은 어떤 성분을 포함하고 있는 가? | 감귤은 비타민 C와 A, 엽산, 식이 섬유, 그리고 무기질과 같은 주요 영양소뿐만 아니라 플라보노이드, 페놀산, 카로테노이드 등의 다양한 생리 활성 성분들을 포함하고 있다(1). 이처럼 감귤에는 건강에 도움이 되는 다양한 성분들이 풍부하므로 감귤을 가공한 감귤 주스는 오래전부터 꾸준하게 소비되었다(1). | |
고전압 펄스전기장 처리는 어떤 방식으로 미생물을 저해시키는 가? | 고전압 펄스전기장(pulsed electric field, PEF) 처리는 비가열 살균 기술로서 살균 중 식품 내 열 유입을 최소화할 목적으로 개발되었다. PEF 처리는 식품에 수만 볼트 이상의 전압을 순간적으로 식품에 가함으로써 식품에 존재하는 미생물의 세포막에 비가역적인 손상을 일으켜 미생물을 저해시킨다(8). Altuntas 등(9)은 30 kV/cm (전기장 세기)-131 μs (처리 시간)의 PEF 처리를 이용하여 체리 주스에 접종된 Escherichia coli O157:H7, Salmonella aureus, Listeria monocytogenes를 포함한 7종의 식중독균을 3. |
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