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- Title
AVALIAÇÃO MICROBIOLÓGICA DE ALFACES (LACUTA SATIVA L.) CONVENCIONAIS E ORGÂNICAS E A EFICIÊNCIA DE DOIS PROCESSOS DE HIGIENIZAÇÃO.
- Authors
de Alencar COSTA, Evelin; Teixeira FIGUEIREDO, Evânia Altina; de Souza CHAVES, Cristina; ALMEIDA, Paulo César; VASCONCELOS, Natália Moura; Cerqueira MAGALHÃES, Iara Maria; MORAES, Anaftália Felismino; Nery PAIXÃO, Livía Maria
- Abstract
The process of washing raw vegetables should ensure the safety of consumption of the same. According to this procedure legislação5 should comprise only one wash in running water and then disinfected by immersion in 200 ppm chlorine solution for at least 15 minutes. Nevertheless, few researches are conducted to ascertain the effi cacy of sanitizers for specifi c vegetables. Thus, the present study aimed to evaluate the lettuces from conventional and organic crops, marketed in Fortaleza, two cleaning processes: the traditional (using only chlorine solution to 200 ppm calcium hypochlorite) and the proposed test method, using specifi c detergent for vegetables WV2640 nitrol (the base of coconut oil and soybean), followed by 200 ppm chlorine solution of calcium hypochlorite and coliform determinations at 45°C or thermotolerant and Salmolella sp. At each step of the process of cleaning samples were collected for analysis of fecal coliform and Salmonella sp, as APHA (2001). The conventional samples showed coliform contamination greater than 45°C than the organic respectively 346 NMP/ NMP 57g/ g. The pre-rinse showed effi cacy in the reduction of approximately 50% contamination of coliforms at 45°C in both lettuce. Samples conventional and organic washed with detergent had signifi cant reduction in coliform counts of approximately 50%. Lettuce in naturas of conventional cropping systems are presented, before washing or cleaning, in violation of the laws of Brazil for coliforms at 45°C. Lettuce naturas systems in organic and conventional crops is presented, after washing with detergent or sanitized in accordance with the laws of Brazil for coliforms at 45°C. The use of detergent-based coconut oil and soybean (Nitrol WV2640) gave the same effect as traditional method of cleaning showing coliform counts at 45°C in similar conventional and the organic lettuce. It was shown in this experiment the effi cacy of the detergent in the washing Nitrol WV2640 before hygiene for the decontamination of coliforms on lettuce conventional and organic.
- Subjects
VEGETABLES; LETTUCE; CALCIUM hypochlorite; COLIFORMS; COCONUT oil; DECONTAMINATION (From gases, chemicals, etc.)
- Publication
Brazilian Journal of Food & Nutrition / Alimentos e Nutrição, 2012, Vol 23, Issue 3, p387
- ISSN
0103-4235
- Publication type
Article