MICROBIAL STUDY OF MANGOES AND ITS CONTROL BY NON-THERMAL TREATMENTS

Zia A. Chatha, Muhammad Usman, Fatima Faiyaz, Ali Raza

Abstract


The mango (Mangifera indica L.) is an important staple food and an important source of carbohydrates, amino acids, vitamins, fatty acids, minerals, protein and organic acids. They however have shorter shelf life due to their high susceptibility to microbial contaminants. Several procedures are using to check microorganisms and enhance shelf life of fruits. This study focused on total viable count and isolation and identification of Salmonella spp., Staphylococcus aureus, Escherichia coli on the surface of mangoes. And effects of non-thermal treatments on microbial life and storage of mangoes. The samples were subjected to various irradiation doses (0.5, 1.0 and 1.5 KGy) and hot water 55ºC and stored for 60 days. Total viable count was estimated at 7 days interval throughout the storage duration. No Salmonella spp., Staphylococcus aureus, Escherichia coli were detected. Mangoes irradiated at the dose of 1.5 KGy have least bacterial viable count (2.9log cfu/g). So, irradiation is more effective in improving microbiological quality and extending shelf life of mangoes.


Keywords


Gamma Irradiations, Hot Water, Mango Fruit, Microbial load, UV-C.

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References


Abadias, M., J. Usall, M. Oliveira, I. Alegre and I. Viñas. 2008. Efficacy of neutral electrolyzed water (NEW) for reducing microbial contamination on minimally-processed vegetables. International Journal of Food Microbiology, 123: 151-158.

Awan, J. A. and S. U. Rahman. 2005. Microbiology Manual, Unitech Communications, Faisalabad. pp. 49-51.

commission, E. 2002. Risk profile on the microbiological contamination of fruits and vegetables. Report of the scientific committee on food.

Fan, X. 2012. Ionizing Radiation. Decontamination of Fresh and Minimally Processed Produce. Wiley-Blackwell, pp. 379-405.

Farkas, J., S. Dharkar and A. Sreenivasan. 1972. Transportation and storage studies on irradiated Alphonso mangoes. Acta Alimentaria Academiae Scientiarum Hungaricae, 1: 401-410.

Farkas, J., K. Polyák-Fehér, C. MOHÁCSI-FARKAS, L. Mészáros, E. Andrássy and T. Sáray. 2003. Studies on irradiation of pre-packaged prepared vegetables and improvement of microbiological safety of some sous-vide meals by gamma radiation. Radiation Processing for Safe, Shelf-stable and Ready-to-eat Food, IAEA-TECDOC-1337, IAEA, Vienna: 27-46.

Gómez-López, V. M., A. Rajkovic, P. Ragaert, N. Smigic and F. Devlieghere. 2009. Chlorine dioxide for minimally processed produce preservation: a review. Trends in Food Science & Technology, 20: 17-26.

Hussain, S., S. Rehman, M. Randhawa and M. Iqbal. 2003. Studies on Physico-chemical, microbiological and sensory evaluation of mango pulp storage with chemical preservatives. Journal of Research in Science Teaching. BZ Uni., Multan, Pak, 14: 01-09.

Jitareerat, P., W. Kriratikron, S. Phochanachai and A. Uthiratanakij. 2005. Effects of gamma irradiation on fungal growths and their pathogenesis on banana cv.‘Kluai Kai’. International Symposium “New Frontier of Irradiated Food and Non-Food Products. pp. 22-23.

Lamikanra, O. 2002 Preface.In Lamikanra.Oeds, Fresh-cut fruit and vegetables. Science and technology and market Boca Raton. CRC Press.

Marquenie, D., C. W. Michiels, J. F. Van Impe, E. Schrevens and B. N. Nicolaı̈. 2003. Pulsed white light in combination with UV-C and heat to reduce storage rot of strawberry. Postharvest Biology and Technology, 28: 455-461.

Niemira, B. A. and X. Fan. Low-Dose Irradiation of Fresh and Fresh-Cut Produce: Safety, Sensory, and Shelf Life. Food Irradiation Research and Technology. Blackwell Publishing, pp. 169-184.

Patterson, M. and E. Stewart. 2003. Effect of gamma irradiation on the shelf-life and nutritional quality of ready made meals. Radiation Processing for Safe, Shelf-stable and Ready-to-eat Food, IAEA-TECDOC-1337, IAEA, Vienna: 47-61.

Ravi, V., M. Prabhu and D. Subramanyam. 2011. Isolation of bacteriocin producing bacteria from mango pulp and its antimicrobial activity. Journal of Microbiology and Biotechnology Research 1: 54-63.

Salunkhe, D. K. and S. Kadam. 1995. Handbook of fruit science and technology: production, composition, storage, and processing. CRC press.

Thayer, D. W., E. S. Josephson, A. Brynjolfsson and G. Giddings. 1996. Radiation pasteurization of food. Council for Agricultural Science and Technology, 7: 1-10.


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Pakistan Journal of Phytopathology
ISSN: 1019-763X (Print), 2305-0284 (Online).
© 2013 Pak. J. Phytopathol. All rights reserved.