Hernández-Anguiano Ana María, Landa-Salgado Patricia, Eslava-Campos Carlos Alberto, Vargas-Hernández Mateo, Patel Jitendra
Phytopathology, Graduate College, Carr. Mexico-Texcoco km 36.5, Montecillo, Texcoco 56230, Mexico.
Departamento de Salud Pública, Facultad de Medicina, National Autonomous University of Mexico (UNAM), University Avenue No. 3000, Ciudad Universitaria, Coyoacan, Mexico City 04510, Mexico.
Microorganisms. 2016 Dec 10;4(4):46. doi: 10.3390/microorganisms4040046.
The consumption of fresh nopal cactus juice is widely popular among health-conscious consumers in Mexico. The juice is prepared from fresh cladodes that have only been rinsed with tap water and are not subjected to a pasteurization or terminal bacterial reduction process. The aim of this study was to evaluate the microbial quality of commercially available fresh juices ( = 162) made with nopal in Texcoco, State of Mexico, during the summer and spring season. Standard microbiological methods, the PCR technique and the serological method were used for isolation and identification of bacteria. All samples contained total coliforms and 91% were positive for . Although total coliforms and were detected throughout the study, their populations were significantly lower ( < 0.05) in winter and spring, respectively. was found in 20% of the samples, an unidentified species of in 10%, and in 3%, and Javiana in 1%. The presence of these microorganisms, especially , in the nopal juices is unacceptable due to its health significance. The information generated in this study is relevant for human health risk assessment associated with the consumption of unpasteurized nopal juices and potential interventions to minimize pathogen contamination.
在墨西哥，饮用新鲜的胭脂仙人掌汁在注重健康的消费者中非常普遍。这种果汁由仅用自来水冲洗过的新鲜茎片制成，未经过巴氏杀菌或最终细菌减少处理。本研究的目的是评估墨西哥州特斯科科市在夏季和春季销售的市售新鲜胭脂仙人掌汁（ = 162）的微生物质量。采用标准微生物学方法、PCR技术和血清学方法对细菌进行分离和鉴定。所有样品均含有总大肠菌群，91%的样品 呈阳性。尽管在整个研究过程中都检测到了总大肠菌群和 ，但它们的数量在冬季和春季分别显著较低（ < 0.05）。在20%的样品中发现了 ，10%的样品中发现了一种未鉴定的 物种，3%的样品中发现了 和 ，1%的样品中发现了 贾维亚纳菌。由于其对健康的影响，这些微生物尤其是 在胭脂仙人掌汁中的存在是不可接受的。本研究产生的信息与饮用未巴氏杀菌的胭脂仙人掌汁相关的人类健康风险评估以及尽量减少病原体污染的潜在干预措施有关。
