Atividade proteolítica de bactérias psicrotróficas em leites estocados em diferentes temperaturas

Izidoro, Thiago Braga; Pereira, Juliano Gonçalves; Soares, Vanessa Mendonça; Spina, Thiago Luiz Belém; Pinto, José Paes de Almeida Nogueira

doi:10.1590/s0034-737x2013000400002

Cited by 5 publications

(3 citation statements)

References 21 publications

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“…The association between the increase in milk temperature and the increase in SPC is possibly related to milk with higher temperature favors the multiplication of microorganisms, mainly mesophilic. Izidoro, Pereira, Soares, Spina and Pinto (2013) observed that the SPC increased as the temperature and storage time increased in milk stored at different temperatures. The factors formed shown that basic actions such as the proper planning of the collection and transport routes for milk, with shorter and faster routes, good practices in primary production, and technical guidance for the dairy farmers and transporters are essential for good milk quality.…”

Section: Resultsmentioning

confidence: 93%

Quality of refrigerated raw milk according to the bulk transport conditions

Felipus

Bajaluk

Neto

et al. 2022

Acta Sci. Anim. Sci.

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Technical regulations that determine milk quality standards in Brazil establish the minimum criteria that the processing industry's raw material must present. These rules can challenge the logistics sector (transport) to maintain adequate milk conservation levels. We aimed to evaluate the influence of bulk transport and storage conditions on refrigerated raw milk quality. The experiment was carried out in a dairy industry in Santa Catarina State. Information and samples of refrigerated raw milk were collected from dairy farms, from isothermal compartments of milk trucks, and from the industry's storage silo. These samples were submitted to microbiological analysis, somatic cell count (SCC), and physicochemical analysis. The results were evaluated by ANOVA and multivariate analysis (factor analysis). The transport of raw milk in bulk and the transfer of raw material to the industrial silo worsened the milk's microbiological quality (p < 0.0001) for standard plate count (SPC) and psychrotrophic microorganism count (PMC), without affecting, the physicochemical characteristics of the milk (p > 0.05). Poor hygienic conditions in milk storage rooms, in the refrigeration bulk tanks of the dairy farms, and during the transport, as well as the transport on longer routes, were related to higher SPC and psychrotrophic count while receiving milk by the dairy industry with higher temperatures was only associated with higher SPC.

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Section: Resultsmentioning

confidence: 93%

Quality of refrigerated raw milk according to the bulk transport conditions

Felipus

Bajaluk

Neto

et al. 2022

Acta Sci. Anim. Sci.

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“…The sample storage time did not affect the PMC (p = 0.9012) in milk samples preserved with azidiol ® , while milk samples not added with this preservative showed a linear increase in PMC with progressing time (hours) (p < 0.0001). Izidoro, Pereira, Soares, Spina and Pinto (2013) evaluated the PMC of milk samples at different storage times (12, 24, and 48 hours) and temperatures (4, 8, and 12°C) and concluded that, regardless of the storage temperature, PMC always increased with increasing storage time. Reche et al (2015) observed higher PMC in bulk milk tanks of the model of 'four milkings', and related such results to the higher storage temperature compared to the bulk milk tanks of the model of 'two milkings' since the latter have a greater capacity for faster cooling of milk.…”

Section: Resultsmentioning

confidence: 99%

Short communication: psychrotrophic microorganism count in raw milk samples preserved with azidiol®

Felipus

Neto

Bajaluk

et al. 2022

Acta Sci. Anim. Sci.

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The study aimed to evaluate the use of the azidiol® preservative for psychrotrophic microorganism count (PMC) in cooled raw milk. Two studies were carried out, one under controlled conditions (experiment 1) and the other under field conditions (experiment 2), in which samples of raw milk were taken with and without the use of the azidiol® preservative and analyzed at predefined times (0, 6, 12 and 24 hours - experiment 1) and at varying times (experiment 2). Analysis of variance and regression analysis using SAS were applied for data statistical analysis. Milk samples without azidiol® showed higher PMC with increasing time between sampling and analysis, while in samples preserved with azidiol®, this count remained constant. Samples of cooled raw milk intended for PMC should be collected in flasks containing the azidiol® preservative.

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“…According to this regulation, milk must be kept refrigerated at a temperature of 4°C and stored on the rural property for a maximum of 48 hours. This refrigeration practice aims to control the proliferation of mesophilic aerobic bacteria, whose count reflects the hygiene conditions up to the milking moment, serving as an indicator of the effectiveness of the milk refrigeration system (Izidoro et al, 2013). This regulation plays a crucial role in ensuring the quality and safety of milk produced in the country.…”

Section: Introductionmentioning

confidence: 99%

Physico-chemical characteristics and microbial profile “in natura” of goat milk from the region of Jaguaretama, Ceará, Brazil

Moises,

Oliveira,

Salgueiro

et al. 2023

RSD

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Caprine farming has experienced remarkable growth in recent years, especially in the Northeast region of Brazil. In this area, historical and geoclimatic factors have played a crucial role in the success of caprine farming, making it a standout on the national stage. Goat's milk, with its richness in fat and nutrients, serves as an excellent raw material for the production of dairy derivatives. Therefore, the analysis its quality holds significant importance in ensuring the excellence of derived products. The objective of this research was to assess the microbiological and physicochemical quality “in natura” of goat milk from Jaguaretama, Ceará, Brazil. Ten raw goat milk samples were collected from various producers in the municipality of Jaguaretama-Ceará, Brazil. The microbiological and physicochemical parameters of these samples were analyzed in the Milk Technology Laboratory of the Federal Institute of Education, Science, and Technology of Ceará (IFCE), situated on the Limoeiro do Norte campus, CE. All samples in this study complied with the physicochemical parameters and thermotolerant Coliforms. However, a single sample exceeded the regulatory limits for total Coliforms, highlighting the need to enhance hygiene practices during milk production, transportation, and storage. It is crucial to emphasize the importance of adhering to good management and hygiene practices in milk production to ensure quality and safety. Maintaining high hygiene standards at all stages of the process is essential to meet regulations and meet the expectations of consumers seeking safe and nutritious dairy products.

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Atividade proteolítica de bactérias psicrotróficas em leites estocados em diferentes temperaturas

Cited by 5 publications

References 21 publications

Quality of refrigerated raw milk according to the bulk transport conditions

Quality of refrigerated raw milk according to the bulk transport conditions

Short communication: psychrotrophic microorganism count in raw milk samples preserved with azidiol®

Physico-chemical characteristics and microbial profile “in natura” of goat milk from the region of Jaguaretama, Ceará, Brazil

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