Sodium Chloride가 치즈의 품질에 미치는 영향과 저염치즈 개발 기술: 총설

The Effect of Sodium Chloride on the Quality of Cheese and Upcoming Technologies for Manufacturing Reduced-Sodium Cheeses: A Review

  • 천정환 (건국대학교 수의과대학 및 KU 식품안전연구소) ;
  • 김현숙 (건국대학교 수의과대학 수의생리학전공) ;
  • 김동현 (건국대학교 수의과대학 및 KU 식품안전연구소) ;
  • 김홍석 (건국대학교 수의과대학 및 KU 식품안전연구소) ;
  • 송광영 (건국대학교 수의과대학 및 KU 식품안전연구소) ;
  • 정동관 (고신대학교 자연과학대학 식품영양학과) ;
  • 김수기 (건국대학교 동물생명과학대학 동물자원학과) ;
  • 서건호 (건국대학교 수의과대학 및 KU 식품안전연구소)
  • Chon, Jung-Whan (KU Center for Food Safety and College of Veterinary Medicine, Konkuk University) ;
  • Kim, Hyun-Sook (Dept. of Veterinary Physiology, College of Veterinary Medicine, Konkuk University) ;
  • Kim, Dong-Hyeon (KU Center for Food Safety and College of Veterinary Medicine, Konkuk University) ;
  • Kim, Hong-Seok (KU Center for Food Safety and College of Veterinary Medicine, Konkuk University) ;
  • Song, Kwang-Young (KU Center for Food Safety and College of Veterinary Medicine, Konkuk University) ;
  • Jeong, Dong-Gwan (Dept. of Food & Nutrition, College of Natural Science, Kosin University) ;
  • Kim, Soo-Ki (Dept. of Animal Science & Technology, College of Animal Bioscience & Technology, Konkuk University) ;
  • Seo, Kun-Ho (KU Center for Food Safety and College of Veterinary Medicine, Konkuk University)
  • 투고 : 2015.03.15
  • 심사 : 2015.03.24
  • 발행 : 2015.03.31

초록

세계보건기구(World Health Organization)는 식료품에 함유된 NaCl을 낮출 것을 권하고 있으며, 식품 내 NaCl 수치 감소시키는 것은 중요한 연구분야가 되었다. 염화나트륨(sodium chloride, NaCl)의 과다 섭취는 고혈압, 골다공증, 뇌졸증, 신장결석, 심혈관계 질환 등의 다양한 질병과 직접 또는 간접적으로 많은 연관되어 있다. 산업국가에서는 치즈등의 가공식품을 통해 많은 양의 소금을 섭취하고 있기 때문에, 치즈 내 NaCl의 함유량 감소에 대한 연구가 진행 중에 있다. 따라서 최근에 치즈 내 NaCl의 함유량을 감축하기 위한 많은 방법들이 이용되고 있다. NaCl은 치즈 내에서 방부제 역할을 하며, 식품의 풍미를 높이고, 치즈의 주요 기능적 특성을 담당하기 때문에, 치즈의 품질에 영향을 주지 않으면서 치즈에 함유된 NaCl을 감소하는 것은 쉽지 않다. 대체방법을 사용하지 않고, 치즈에 함유된 NaCl을 감축시키는 연구가 진행되어 왔지만, NaCl 감소 시에 발생하는 식품의 관능적 특성, 유동학 및 안정성 문제들이 보고되고 있다. 지금까지의 연구 결과에 의하면 식품 내 NaCl을 감소시키는 방법으로는 NaCl 대체(NaCl substitution)라고 불리는 방법이 있으며, 이 방법은 NaCl을 부분적으로 다른 염분(염화칼륨, 염화마그네슘, 염화칼슘)으로 대체함으로써 식품에 함유된 NaCl 수치를 감소시킨다. 실례로 자연치즈에 함유된 NaCl을 KCl로 대체하였을 때 치즈의 특성, 특히 맛에 변화와 안정선에 문제가 야기되었다. 반면, 가공치즈에 함유된 NaCl을 KCl로 대체하였을 때, 치즈의 특성이 큰 영향을 받지 않았기 때문에, 이 방법을 사용하여 치즈에 함유된 NaCl의 수치를 감소시킬 수 있는 가능성이 높다는 것을 나타냈다. 이와 같은 결과는 자연치즈 내의 NaCl 함량을 감축하기 위해서는 치즈에 함유된 NaCl의 역할, NaCl과 건강문제, NaCl 감소 방법, 다른 염분(특히 염화칼륨으로 NaCl 대체하는 방법)을 사용하는 방법 등에 관한 더 많은 향후 연구가 많이 필요하며, 적극적으로 진행되어야 할 것이다.

Sodium is an essential nutrient with very important functions, including regulation of the extracellular fluid volume and active transport of molecules across the cell membranes. Since high levels of dietary sodium are associated with a high prevalence of hypertension, prehypertension, and other adverse effects on health, many national and international health organizations (WHO, FAO, etc.) recommend that sodium intake should be significantly decreased. In developed nations, cheese products, from among many processed foods, can cause high salt intake. Hence, there is an urgent need to reduce the content of salt in cheese processing, using various substitutes of sodium chloride (NaCl). In general, salt (NaCl) has been used as a food preservative to limit and (or) kill the growth of foodborne pathogens and spoilage organisms by decreasing the water activity, and to improve texture and flavor. To maintain public health, the salt content in cheese should be decreased without influencing the physicochemical properties of cheese. Therefore, the objective of this review is to outline the upcoming technologies used to reduce the salt content in different types of cheese using various substitutes.

키워드

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