Arid
DOI10.1089/fpd.2012.1256
Enterotoxin-Encoding Genes in Staphylococcus spp. from Bulk Goat Milk
Lyra, Daniele G.1; Sousa, Francisca G. C.2; Borges, Maria F.3; Givisiez, Patricia E. N.2; Queiroga, Rita C. R. E.4; Souza, Evandro L.4; Gebreyes, Wondwossen A.5,6; Oliveira, Celso J. B.2,6
通讯作者Oliveira, Celso J. B.
来源期刊FOODBORNE PATHOGENS AND DISEASE
ISSN1535-3141
EISSN1556-7125
出版年2013
卷号10期号:2页码:126-130
英文摘要

Although Staphylococcus aureus has been implicated as the main Staphylococcus species causing human food poisoning, recent studies have shown that coagulase-negative Staphylococcus could also harbor enterotoxin-encoding genes. Such organisms are often present in goat milk and are the most important mastitis-causing agents. Therefore, this study aimed to investigate the occurrence of enterotoxin-encoding genes among coagulase-positive (CoPS) and coagulase-negative (CoNS) staphylococci isolated from raw goat milk produced in the semi-arid region of Paraiba, the most important region for goat milk production in Brazil. Enterotoxin-encoding genes were screened in 74 staphylococci isolates (30 CoPS and 44 CoNS) by polymerase chain reaction targeting the genes sea, seb, sec, sed, see, seg, seh, and sei. Enterotoxin-encoding genes were found in nine (12.2%) isolates, and four different genes (sea, sec, seg, and sei) were identified amongst the isolates. The most frequent genes were seg and sei, which were often found simultaneously in 44.5% of the isolates. The gene sec was the most frequent among the classical genes, and sea was found only in one isolate. All CoPS isolates (n = 7) harboring enterotoxigenic genes were identified as S. aureus. The two coagulase-negative isolates were S. haemolyticus and S. hominis subsp. hominis and they harbored sei and sec genes, respectively. A higher frequency of enterotoxinencoding genes was observed amongst CoPS (23.3%) than CoNS (4.5%) isolates (p < 0.05), reinforcing the importance of S. aureus as a potential foodborne agent. However, the potential risk posed by CoNS in goat milk should not be ignored because it has a higher occurrence in goat milk and enterotoxin-encoding genes were detected in some isolates.


类型Article
语种英语
国家Brazil ; USA
收录类别SCI-E
WOS记录号WOS:000315468000004
WOS关键词COAGULASE-NEGATIVE STAPHYLOCOCCI ; MASTITIS PATHOGENS ; PCR DETECTION ; AUREUS ; IDENTIFICATION ; RAW ; SAMPLES ; STRAINS
WOS类目Food Science & Technology
WOS研究方向Food Science & Technology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/177172
作者单位1.Fed Inst Educ Sci & Technol Alagoas IFAL, Santana Do Ipanema, AL, Brazil;
2.Univ Fed Paraiba, Dept Anim Sci, Areia, PB, Brazil;
3.EMBRAPA Trop Agroind, Fortaleza, CE, Brazil;
4.Univ Fed Paraiba, Dept Nutr, BR-58059900 Joao Pessoa, PB, Brazil;
5.Ohio State Univ, Dept Vet Prevent Med, Columbus, OH 43210 USA;
6.Ohio State Univ, Coll Vet Med, VPH Biotech Global Consortium, Columbus, OH 43210 USA
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GB/T 7714
Lyra, Daniele G.,Sousa, Francisca G. C.,Borges, Maria F.,et al. Enterotoxin-Encoding Genes in Staphylococcus spp. from Bulk Goat Milk[J],2013,10(2):126-130.
APA Lyra, Daniele G..,Sousa, Francisca G. C..,Borges, Maria F..,Givisiez, Patricia E. N..,Queiroga, Rita C. R. E..,...&Oliveira, Celso J. B..(2013).Enterotoxin-Encoding Genes in Staphylococcus spp. from Bulk Goat Milk.FOODBORNE PATHOGENS AND DISEASE,10(2),126-130.
MLA Lyra, Daniele G.,et al."Enterotoxin-Encoding Genes in Staphylococcus spp. from Bulk Goat Milk".FOODBORNE PATHOGENS AND DISEASE 10.2(2013):126-130.
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