共 3 条
Profile of lactic acid bacteria (MALDI-TOF-MS) and physico-chemical and microbiological characteristics of the raw milk and fresh artisanal cheese from Serra Geral, Minas Gerais, Brazil
被引:0
|作者:
Caldeira, Luciana A.
[1
,2
]
Valente, Gustavo L. C.
[1
]
Barbosa, Cosme D.
[1
]
Braga, Douglas E.
[1
]
Monca, Flavio P.
[2
]
Fonseca, Leorges M.
[1
]
Souza, Marcelo R.
[1
]
Gloria, Maria Beatriz A.
[1
,3
]
机构:
[1] Univ Fed Minas Gerais, Escola Vet, BR-31270901 Belo Horizonte, MG, Brazil
[2] Univ Estadual Montes Claros, Dept Ciencias Agr, BR-39448524 Janauba, MG, Brazil
[3] Univ Fed Minas Gerais, Fac Farm, Dept Prod Farmaceut, Labs Controle Qualidade LCQ, Ave Antonio Carlos 6627, BR-31270901 Belo Horizonte, MG, Brazil
关键词:
Raw milk cheese;
Natural starter culture;
Water quality;
Cheesemaking;
Production benches;
Cheese terroir;
Food safety;
CULTURE;
REGION;
D O I:
10.1016/j.foodres.2023.113831
中图分类号:
TS2 [食品工业];
学科分类号:
0832 ;
摘要:
Artisanal cheese from Serra Geral, Minas Gerais, Brazil, stands out for its cultural asset and socio-economic relevance. However, standards of identity and quality and the peculiar terroir associated with the edaphocli-matic conditions have not been established. Therefore, the production flow diagram and the physico-chemical and microbiological quality of the raw milk, pingo (natural starter culture), production benches, water and fresh cheese were investigated for the first time. In addition, lactic acid bacteria (LAB) from cheese and its production environment were identified by MALDI-TOF. For that, 12 cheese making facilities were selected. The raw milk and pingo showed adequate physico-chemical characteristics for cheesemaking; however, high micro-bial counts were found. In the water, total and thermotolerant coliforms were also identified. The fresh cheeses were classified as 'high moisture and fat' and 'soft mass'. Most physico-chemical parameters were satisfactory; however, there were high counts of total coliforms, Staphylococcus spp. and coagulase-positive staphylococci. There were high counts of LAB in the raw milk, pingo, bench surface and fresh cheese. A total of 84 microbial biotypes from MRS agar were isolated. Lactococcus lactis was the predominant LAB, followed by Lactococcus garvieae. Leuconostoc mesenteroides (benches), Leuconostoc pseudomesenteroides (fresh cheese), and Enterococcus faecium (pingo) were identified sporadically. These results indicate the risks to public health associated with the consumption of the fresh cheese, and measures to improve its safety are needed.
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页数:11
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