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  • 1
    Electronic Resource
    Electronic Resource
    Lactate Dehydrogenase Activity as an Endpoint Heating Indicator in Cooked Beef (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 62 (1997), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Lactate dehydrogenase (LDH, E.C. 1.1.1.27) activity, specifically LDH5 isoenzyme, declined significantly when bovine Semimembranosus (SM) slurries were heated from 57° to 66°C. When SM whole muscle roasts were brine pumped and oven-cooked, total LDH and specific activities declined proportionately from 57° to 63°C resulting in almost no activity at 63°± 0.5°C. LDH activities were consistently higher in younger cattle and lower in older cattle for SM, Infraspinatus (IN) and Longissimus dorsi (LD) muscles and were lowest overall in the IN. LDH colorimetric and fluorescent assays were more accurate indicators for predicting beef roast heating temperature endpoints between 60° and 63°C than the USDA-FSIS method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1997.tb03992.x
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  • 2
    Electronic Resource
    Electronic Resource
    Lactate Dehydrogenase Activity in Bovine Muscle as a Means of Determining Heating Endpoint (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 56 (1991), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Influence of pH, salt, phosphate, cooking temperature, muscle variation, carcass sex and maturity on lactate dehydrogenase (LDH, E.C. 1.1.1.27) activity in bovine tissue slurries was investigated. LDH activity declined sharply as temperature neared 63°C at pH 5.6 and 6.4, but no activity was detected at pH 4.8. As salt and phosphate concentrations increased, LDH activity decreased. LDH activity varied greatly from muscle to muscle. Carcasses did not differ in LDH activity by sex, but showed a decrease in activity as maturity increased. LDH has potential as a determinant of the minimum heating endpoint in precooked beef and a rapid analytical test could be developed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1991.tb14600.x
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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