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Subject

Effects of the Heat-Treatment on the Nutritional Quality of Milk - I. Historical Development of the Heat-Treatment Technology in Milk -
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우유의 열처리가 우유품질과 영양가에 미치는 영향 - I. 우유 열처리 기술의 발달사 -

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Type
Academic journal
Author
Jung, Anna (전남대학교 동물자원학부) Oh, Sejong (전남대학교 동물자원학부)
Journal
Korean Dairy Technology and Science Association Journal of Milk Science and Biotechnology(한국유가공기술과학회지) 한국유가공학회지 제34권 제4호
Published
2016.1
Pages
271 - 278 (8page)

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Effects of the Heat-Treatment on the Nutritional Quality of Milk - I. Historical Development of the Heat-Treatment Technology in Milk -
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The main purpose of milk heat-treatment is to improve milk safety for consumer by destroying foodborne pathogens. Secondly, heat-treatment of milk is to increase maintaining milk quality by inactivating spoilage microorganisms and enzymes. Pasteurization is defined by the International Dairy Federation (IDF, 1986) as a process applied with the aim of avoiding public health hazards arising from pathogens associated with milk, by heat treatment which is consistent with minimal chemical, physical and organoleptic changes in the product. Milk pasteurization were adjusted to $63{\sim}65^{\circ}C$ for 30 minutes (Low temperature long time, LTLT) or $72{\sim}75^{\circ}C$ for 15 seconds (High temperature short time, HTST) to inactivate the pathogens such as Mycobacterium bovis, the organism responsible for tuberculosis. Ultra-high temperature processing (UHT) sterilizes food by heating it above $135^{\circ}C$ ($275^{\circ}F$) - the temperature required to destroy the all microorganisms and spores in milk - for few seconds. The first LTLT system (batch pasteurization) was introduced in Germany in 1895 and in the USA in 1907. Then, HTST continuous processes were developed between 1920 and 1927. UHT milk was first developed in the 1960s and became generally available for consumption in the 1970s. At present, UHT is most commonly used in milk production.

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