QUALITY OF REFRIGERATED RAW MILK FROM BUFFALO COWS (Bubalus bubalis bubalis) IN DIFFERENT FARMS AND SEASONS IN BRAZIL

Abstract

The present research aimed to examine the chemical and microbiological characteristics of refrigerated raw milk collected from buffalo-only dairy herds from different farms and seasons. Samples were collected from twelve farms producing buffalo milk, located in the Mideast region of São Paulo state, in Brazil, once a month throughout the dairy calendar year from 2011 to 2014. The analysis of fat, protein, lactose, dry extract, and total solids contents were carried out using Infrared Absorption. Residues for antimicrobial analysis were carried out using Delvo Test Kit technique, and both somatic cell count and standard plate count analysis were carried out using Flow Cytometry. The analysis of the chemical components as well as for the microbiological analysis of SPC proved to be statistically significant throughout the period. No antibiotic residues were found in the totality of the sample, hence indicating that the farmers complied with the current sanitary legislation in that country, as well as SCC; however, higher values were found for the SPC. Significant results for all parameters analyzed were found among the farms, indicating that price incentives paid for the quality of raw milk could be an alternative to dairy processing companies, favoring yield and quality of the final product. Keywords: Brazil; chemical parameters; dairy; microbiological parameters; monitoring. ResumoO presente estudo objetivou examinar as características químicas e microbiológicas do leite cru refrigerado coletado em diferentes fazendas e estações. Amostras foram coletadas em doze fazendas 2 Cienc. anim. bras., Goiânia, v.18, 1-12, e-41815, 2017Quality of refrigerated raw milk from buffalo cows… produtoras de leite de búfala localizadas na região centro-leste do estado de São Paulo, Brasil, uma vez ao mês entre os anos de 2011 a 2014. Análises de gordura, proteína, lactose, extrato seco e sólidos totais foram realizadas utilizando-se técnica de Infra-vermelho. Análises de resíduos de antimicrobianos foram realizadas através do teste rápido Kit Delvo Test. Análises de contagem de células somáticas e contagem padrão em placas foram conduzidas através de Citometria de Fluxo. Resultados das análises dos componentes químicos, assim como da análise microbiológica de CPP, demonstraram diferenças estatísticas significativas através das estações para estes parâmetros. Em todas as amostras analisadas nenhum resíduo de antimicrobiano foi detectado, indicando que os produtores estão respeitando a legislação sanitária brasileira vigente, bem como para SCC; no entanto, valores acima do permitido foram encontrados para CPP. Diferenças significativas para todos os parâmetros analisados foram encontradas entre as fazendas investigadas, indicando que o incentivo de preço pago pela qualidade do leite cru poderia ser uma alternativa às empresas de processamento de lácteos, favorecendo o rendimento e a qualidade do produto final. Palavras-chave: Brasil; laticínio; monitoramento; parâmetros químicos; parâmetros microbiológicos.

Microbiological and physicochemical characteristics of buffalo milk used for dairy products in southern Brazil

“…This result was lower than what had been published in previous research (Filho et al ., 2014; Pasquini et al ., 2018), albeit close to findings that Bailone et al . reported (2017). To ensure the quality of manufacturing cheese, especially coagulation, Tripaldi et al .…”

“…The mean fat measurements for all analyzed buffalo milk samples from the period of this study was 5.5 g/100 g, and the fat content ranged from 4.26 g/100 g to 9.57 g/100 g. The overall median for protein was calculated at 4.06 g/100 g with values ranging from 3.42 g/100 g to 4.60 g/100 g. The mean fat and protein contents were lower than those reported in studies conducted in Italy (Pesce et al ., 2016; Pasquini et al ., 2018) and the USA (Han et al ., 2012), while they were similar to studies performed in Egypt (Elshaghabee et al ., 2017) or other parts of Brazil (Filho et al ., 2014; Bailone et al ., 2017; Sales et al ., 2018). Total solids were measured at an average value of 15.5 g/100 g, ranging from 13.56 g/100 g to 19.53 g/100 g. This average was very close to other studies conducted in Brazil (Filho et al ., 2014; Bailone et al ., 2017; Sales et al ., 2018), but lower than those reported by Han et al . (2012).…”

“…Durability and sensory characteristics are also affected (Teixeira et al ., 2005). Our results corroborate those of many previous studies (Chye et al ., 2004; Filho et al ., 2014; Bailone et al ., 2017; Sales et al ., 2018), and are only greater than the findings of some studies (Figueiredo et al ., 2010; Pasquini et al ., 2018).…”

“…For the same reason, we could explain the significantly higher density in summer when compared to autumn. Unlike other studies that did not report a significant difference in lactose levels in raw buffalo milk (Bailone et al ., 2017; Pasquini et al ., 2018), we observed that the summer and spring results of our samples were higher when compared to those collected in autumn. It needs to be taken into account that we were unable to account for possible stage-of-lactation effects when examining effects of season.…”

Emprego De Prebiótico Em Doce De Leite Bubalino Visando À Redução Da Sacarose

“…Para o teor de sais minerais os valores encontrados por Verruma e Salgado (1994) foram iguais a 0,70 g/100g. Assim como a gordura, o teor de sais minerais do leite de búfala avaliado também foi diferente do apresentado pela literatura, sendo que neste caso, Bailone et al (2017) afirmam que é influenciado principalmente pelo estágio de lactação.…”