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埃塞俄比亚吉吉加市屠宰场和零售店骆驼肉的微生物安全性及卫生质量

Microbiological safety and hygienic quality of camel meat at abattoir and retail houses in Jigjiga city, Ethiopia.

作者信息

Tegegne Henok Ayalew, Berhanu Amare, Getachew Yitbarek, Serda Biresaw, Nölkes Dagmar, Tilahun Sissay, Sibhat Berhanu

机构信息

Haramaya University, College of Veterinary Medicine, Dire Dawa, Ethiopia.

Dire Dawa University, Dire Dawa, Ethiopia.

出版信息

J Infect Dev Ctries. 2019 Mar 31;13(3):188-194. doi: 10.3855/jidc.9686.

Abstract

INTRODUCTION

Camel meat is a relatively new, emerging meat type that may serve as sources of foodborne pathogens to the consumer.

METHODOLOGY

A cross-sectional study was conducted to determine the microbiological safety and quality of camel meat from an abattoir and retail houses in Jigjiga city, Ethiopia. A total of 140 camel carcass and retail meat samples (70 each) were examined for the presence and load of Staphylococcus aureus, Escherichia coli O157: H7, Listeria monocytogenes, Campylobacter spp., aerobic bacteria, fecal coliforms (FCs), and yeast and molds (Y and Ms). Presumptive isolates were confirmed using biochemical tests.

RESULTS

S. aureus and E. coli O157: H7 populations varied widely between carcasses at the abattoir and retail meat samples. S. aureus and E. coli O157:H7 were detected in 12.1 and 4.3% of the samples, respectively. E. coli O157:H7 counts were significantly higher in retail meat (4.21 ± 0.02) compared to the carcasses (3.99 ± 0.00) at the abattoir (P < 0.05). Out of 140 samples analyzed, 5% were positive for Campylobacter spp. The mean fecal coliforms, and yeast and molds counts were significantly higher in retail meat samples (6.17 ± 0.067 and 4.95 ± 0.067 log10 cfug-1, respectively). L. monocytogenes (11 cfug-1) were detected below the permissible limit (100 cfug-1).

CONCLUSIONS

This study indicated that the further the process progress, the greater the risk of contamination to the product. Therefore, good hygienic practices at the abattoir and retail houses and strict slaughtering process should be prompted to enhance the overall safety and quality of camel meat.

摘要

引言

骆驼肉是一种相对较新的新兴肉类,可能会给消费者带来食源性病原体。

方法

开展了一项横断面研究,以确定埃塞俄比亚吉吉加市一家屠宰场和零售店的骆驼肉的微生物安全性和质量。共检测了140份骆驼胴体和零售肉样(各70份),以检测金黄色葡萄球菌、大肠杆菌O157:H7、单核细胞增生李斯特菌、弯曲杆菌属、需氧菌、粪大肠菌群以及酵母菌和霉菌的存在情况及数量。使用生化试验对推定分离株进行确认。

结果

屠宰场的胴体和零售肉样中金黄色葡萄球菌和大肠杆菌O157:H7的数量差异很大。分别在12.1%和4.3%的样品中检测到金黄色葡萄球菌和大肠杆菌O157:H7。零售肉中的大肠杆菌O157:H7数量(4.21±0.02)显著高于屠宰场的胴体(3.99±0.00)(P<0.05)。在分析的140份样品中,5%的弯曲杆菌属呈阳性。零售肉样中的粪大肠菌群以及酵母菌和霉菌的平均数量显著更高(分别为6.17±0.067和4.95±0.067 log10 cfu/g)。检测到的单核细胞增生李斯特菌(11 cfu/g)低于允许限量(100 cfu/g)。

结论

本研究表明,加工过程越往后,产品受污染的风险就越大。因此,应在屠宰场和零售店推行良好的卫生规范以及严格的屠宰流程,以提高骆驼肉的整体安全性和质量。

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