dc.contributorNörnberg, José Laerte
dc.contributorhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4788857E6
dc.contributorMeinerz, Gilmar Roberto
dc.contributorhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4588351P8
dc.contributorSchafhäuser Junior, Jorge
dc.contributorhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4776833H7
dc.contributorSiqueira, Lucas Carvalho
dc.contributorhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4764730A5
dc.contributorWagner, Roger
dc.contributorhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4764455Y6
dc.creatorVargas, Diego Prado de
dc.date.accessioned2016-05-04
dc.date.accessioned2019-05-24T19:31:48Z
dc.date.available2016-05-04
dc.date.available2019-05-24T19:31:48Z
dc.date.created2016-05-04
dc.date.issued2015-12-16
dc.identifierVARGAS, Diego Prado de. EFFECT OF SEASONALITY AND TECHNOLOGICAL LEVEL IN QUALITY AND NUTRACEUTICAL POTENTIAL OF MILK COW. 2015. 129 f. Tese (Doutorado em Ciência e Tecnologia dos Alimentos) - Universidade Federal de Santa Maria, Santa Maria, 2015.
dc.identifierhttp://repositorio.ufsm.br/handle/1/3411
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/2834851
dc.description.abstractThe effect of technological levels of production systems and seasons in the microbiological (somatic cell count and total bacterial count) and chemical quality of milk (fat, protein, nutraceutical potentiality in relation to the fatty acids profile and pesticides) was evaluated. Through multivariate statistical techniques, it was reduced dimensionality of 1,541 units producing milk (UPM) for the 15 municipalities in the Rio Grande do Sul, Brazil, 15 homogeneous groups and evaluated three UPL per quadrant of the Cartesian plane, in different seasons, which were characterized in four levels of specialization: highly specialized, specialized, partially specialized, and not specialized. After, milk samples from each farm were collected for analysis of microbiological quality and milk chemistry, including the fatty acid profile and index for evaluating the quality lipid fraction, especially the index proposed by the study, called nutraceutical index (NI); and also, the safety of the milk in respect of 93 pesticide residues and efficacy of degradation or elimination of these pesticides front of industrial heat treatments. The production systems and the seasons jointly interfere in the fatty acids profile, and singly interfere in chemical and microbiological quality of the milk. The lowest somatic cell count and the highest protein content were observed in summer, and the specialization level of production units had inverse relationship with total bacterial count. During winter, not specialized systems produced milk with the best nutraceutical index, with the highest values of polyunsaturated fatty acids, rumenic acid (CLA, 18:2n7 - c9, t11) and t10, c12 octadecadienoic acid (CLA, 18:2n6 t10, c12). In addition, with increasing levels of specialization of UPM and especially in the spring, summer and autumn were increased agrochemical residue levels in the milk. However, the industrial heat treatments were effective to degrade or eliminate the pesticides present in refrigerated raw milk, highlighting the importance of these different binomials of time and temperature for the safety of the milk consumed.
dc.publisherUniversidade Federal de Santa Maria
dc.publisherBR
dc.publisherCiência e Tecnologia dos Alimentos
dc.publisherUFSM
dc.publisherPrograma de Pós-Graduação em Ciência e Tecnologia dos Alimentos
dc.rightsAcesso Aberto
dc.subjectÁcido linoleico conjugado
dc.subjectAgrotóxicos
dc.subjectAlimentos funcionais
dc.subjectPerfil de ácidos graxos
dc.subjectQualidade do leite
dc.subjectConjugated linoleic acid
dc.subjectPesticides
dc.subjectFunctional foods
dc.subjectFatty acid profile
dc.subjectMilk quality
dc.titleEfeito da sazonalidade e do nível tecnológico de unidades produtoras na qualidade e potencialidade nutracêutica do leite bovino
dc.typeTese


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