Influence of storage time of refrigerated raw milk on the presence of CMP (caseinomacropeptídeo) / Influência do tempo de estocagem de leite cru refrigerado sobre a presença de CMP (Caseinomacropeptídeo)

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

With the objective to evaluate the influence of the stockage time on the presence of CMP (caseinmacropeptide) in raw milk the raw material after reception for the dairy industrie was cooled, 4 C, and stored in 20.000 L isothermal horizontal tank. The tank remained sealed up during the 72 hours of stockage and in this period the access to this only for collection of samples with intention was allowed to carry through analyses physicistchemistries, microbiological (counting psychrotrophics aerobic) and of chromatography in HPLC (for whey detention). After the stockage for 72 hours raw milk was destined to the manufacture of Prato cheese. The Prato cheese was submitted the analyses of humidity, chloride and pH, sensorial income and for the quantitative descriptive analysis. One evidenced that the time of stockage of 72 hours is enough for the indication of false positive of whey presence. To long of the storage time the growth of the counting of psychrotrophics, 1,99 x 105 - 6,29 x 105 UFC/mL, is correlated estatistically with the evolution of the text of the whey since these microrganismos are the responsible ones for proteolysis of -casein. Proteolysis promoted by psychrotrophics is preoccupying for the dairy industry since it can indicate false positive of fraudulent addition of whey to raw milk besides having an inadequate raw material for production of milky derivatives. The analyses physicistchemistries and of cheese income Prato show that the cooled raw milk use in the production of related queijo did not modify the quality standards, identity and of market of such product. The quantitative descriptive analysis showed that samples that samples of produced Prato cheese with raw milk cooled storaged by 72 hours can negative influence in the attributes flavor bitter taste and elasticity for proteolysis of the casein

ASSUNTO(S)

milk cooling, milk whey (caseinomacropeptídeo), derived from milk ciencia de alimentos leite, resfriamento, soro de leite (caseinomacropeptídeo), derivado do leite

ACESSO AO ARTIGO

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