埃塞俄比亚奥罗米亚北部谢瓦地区生牛奶的微生物质量和处理方法

B. Tadesse, D. Tesfaye, Abera Bosenu, Yirda Alemnesh, Satalo Sanago
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引用次数: 1

摘要

背景:牛奶被普遍认为是一种完整的饮食,对确保粮食安全起着关键作用。然而,由于乳制品基础设施不足和卫生处理实践知识有限,生牛奶的质量在不同阶段受到影响。因此,本研究旨在评价埃塞俄比亚奥罗米亚北部谢瓦地区生牛奶的微生物质量和处理方法。方法:采用有目的抽样的方法,根据现有的乳制品生产潜力、牛奶市场和收集中心选择研究区域和参与者。400名参与者被选中;从研究地区的家庭和收集点收集了50份生牛奶样本。结果:微生物学分析显示,家庭总细胞计数平均值(4.836±0.206 (log10 CFU/ml))高于采集点的4.391±0.15;金黄色葡萄球菌在家庭水平的平均值为2.470±0.038,在采集点的平均值为2.249±0.093。采集点大肠杆菌、酵母菌和霉菌的平均值分别为5.414±0.100、3.372±0.091、2.670±0.037,高于家庭水平(3.343±0.122、2.944±0.074、2.479±0.039)。结论:较高的微生物负荷总数和平均值具有经济和公共卫生意义;,如金黄色葡萄球菌和大肠杆菌,表明处理生牛奶的卫生做法不佳。因此,应在奶牛生产者和牛奶收集者中建立意识,以尽量减少因土壤微生物导致牛奶变质而造成的经济损失和人畜共患病原体造成的消费者安全风险。
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Microbial quality and handling practices of raw cow milk in North Shewa Zone, Oromia, Ethiopia
Background: Milk is universally accepted as a complete diet that plays a key role to ensure food security. However, the quality of raw cow milk is affected at various stages due to inadequate dairy infrastructure and limited knowledge of hygienic handling practices. Thus, the study aimed to evaluate the microbial quality of raw cow milk and handling practices in the North Shewa zone, Oromia, Ethiopia. Methodology: Purposive sampling was used to select study districts and participants based on the available dairy production potential, milk market, and collection center. Four hundred participants were selected; 50 raw cow milk samples were collected from households and collection spots in study areas. Results: Microbial analysis indicated that the mean values of total cell counts were higher in households (4.836±0.206 in log10 CFU/ml) than 4.391±0.15 at collection spots. Similarly, the mean values of Staphylococcus aurous were 2.470±0.038 at the household level and 2.249±0.093 at collection spots. The mean values of E.coli, yeast count and mould count were however, higher at collection spots (5.414±0.100, 3.372±0.091, 2.670±0.037) than household level (3.343±0.122, 2.944±0.074, 2.479±0.039), respectively. Conclusions: The higher total counts and mean values of microbial loads of economic and public health significance; like Staphylococcus aurous and E. coli at household level and collection spots indicated poor hygienic raw cow milk handling practices. Therefore, awareness should be created among the dairy cattle producers and milk collectors to minimize economic losses through milk spoilage with soil microbes and the risk of consumer safety due to zoonotic pathogens.
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