RESUMO O objetivo deste trabalho foi obter e caracterizar (físico-química, reológica e microbiologicamente) iogurtes elaborados a partir de leite de ovelha (integral e semidesnatado) e de leite de vaca (integral e semidesnatado). Foram realizadas análises físico-químicas (pH, acidez, proteínas, lactose, gordura, cinzas e minerais) e microbiológicas (Salmonella spp., Staphylococcus coagulase positivas e coliformes a 35 °C), nos leites e nos iogurtes e, de sinérese, nos iogurtes, nos 1°, 15° e 35° dias de armazenamento. A partir das análises físico-químicas, verificou-se que o leite de ovelha, integral e semidesnatado, é mais rico, nutricionalmente, que o leite de vaca integral e semidesnatado, e que os iogurtes com leite de ovelha, tanto integral como semidesnatado, apresentaram os maiores valores de gordura, proteína, pH, lactose, minerais e maior sinérese que os iogurtes com leite de vaca, integral e semidesnatado.
ABSTRACT The objective of this work was to obtain and characterize (physicochemical, rheological and microbiologically) yogurt made from sheep's milk (whole and semi-skimmed) and cow's milk (whole and semi-skimmed). Were carried out physical and chemical analysis (pH, acidity, protein, lactose, fat, ash and minerals) and microbiological (Salmonella spp., Staphylococcus coagulase positive and coliforms at 35 °C), in the milk and yogurts and syneresis in yoghurts held on 1st, 15th and 30th days of storage. From the physico-chemical analysis, it was found that the fully and semi-skimmed sheep's milk is nutritionally richer when compared to whole cow's milk and semi-skimmed milk and yoghurts with both full sheep's milk as semi-skimmed presented the larger values of fat, protein, pH, lactose, minerals and higher syneresis when compared to the yoghurt with whole cow's milk, semi-skimmed milk.