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J Dairy Sci ; 103(12): 11178-11189, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33041026

RESUMO

Heat treatment is the most common method used to make milk safe; however, it leads to changes in the organoleptic and nutritional properties of milk. This study aimed to investigate the effects of different heat treatments on nutrients and microbiota of camel milk. The results showed that the nutrient composition of camel milk could be influenced by heat treatment. Ultra-high-temperature treatment of samples significantly reduced levels of camel milk proteins, vitamin C, and lactose, but did not significantly alter the amino acids content. Analysis of 16S rRNA amplicon sequences demonstrated that the composition of the intestinal microbiota of mice fed different heat-treated camel milks changed, as did the production of short-chain fatty acids as determined by gas chromatography-mass spectrometry. High temperature/short time treatment had similar effects to UHT treatment on microbial diversity of camel milk; however, the low temperature/long time treatment had different effects. In addition, higher-temperature treatments changed the abundance of key bacteria at the genus level. These results demonstrated that different heat treatments not only resulted in some nutrient loss, but also changed the proliferation of some probiotic genera. Our results could provide the basis for the potential industrial application of camel milk processing technologies.


Assuntos
Bactérias/metabolismo , Camelus , Microbioma Gastrointestinal , Temperatura Alta , Leite/química , Animais , Bactérias/classificação , Lactose/análise , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Proteínas do Leite/metabolismo , Nutrientes/metabolismo , Probióticos , RNA Ribossômico 16S/análise
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