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EFFECT OF GAMMA IRRADIATIONS ON FUNGAL GROWTH OF MANGO (MANGIFERA INDICA) TO ENHANCE THE SHELF LIFE. | Chatha | Pakistan Journal of Phytopathology

EFFECT OF GAMMA IRRADIATIONS ON FUNGAL GROWTH OF MANGO (MANGIFERA INDICA) TO ENHANCE THE SHELF LIFE.

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

Abstract


The main objective of this research was to find the effect of Gamma irradiations and UV-C irradiations on the storability of mango fruit to check the prevention of fungal growth and the formation of skin scald. Gamma irradiations had showed the limited growth of microbes, delay of ripening and extension in the shelf life of mango fruit. From the surface of mango different thirteen fungal species were isolated. Different irradiation doses (0.50, 1.00 and 1.50 kGy) along with hot water were applied on the surface of mangoes and stored for 60 days. After treatment, the samples were collected and cultured on different media for growth and identification of fungi. Mangoes treated with gamma irradiation dose (1.5KGy) showed better shelf life than other treatments for controlling the decay of mangoes and enhancing the shelf life. Reduction in the disease incidence had been achieved with relatively high dose of gamma irradiations. However high dose of irradiations had adverse effects on texture and other qualities, but these effects can be reduced by using combined treatments of radiations plus low temperature. Several aflatoxin producing fungal species including Aspergilus flavus, A. fumiigatus, A. niger, Penecillium chrysogenum, P. brevicompactum, P. verucosum, P. oxaliicum, Cladosporum cladosporoides were isolated from mango surface and their isolation frequencies were observed.  Gamma irradiations at 1.50 KGy showed best results to remove fungal isolates when it was applied on mango surface for two hours and fifteen minutes.


Keywords


Gamma Irradiations, Hot Water, Mango Fruit, Fungus frequency percentage, UV-C.

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References


Beraha, L. 1964. Influence of gamma radiation dose rate on decay of citrus, pears, peaches, and on penicillium and Botrytis cinerea in vitro. Phytopathology (US), 54.

FAO STAT. FAO Statistics. 2012. Food and Agriculture Organization of the United Nations, Rome, Italy.

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.

Meier, G. W. 1964. Early Behavioral Analysis of Low-Dose-Rate, High-Dose Gamma-Irradiation Effects. Radiation Research, 22: 398.

GOP., 2007. Fruit, vegetables and condiments statistics of Pakistan. Ministry of Food, Agriculture and Livestock, Food and Agriculture Division.

Pitt, J. I. and A. D. Hocking. 1997. Fungi and Food Spoilage. Springer US.

Prusky, D. 1996. Pathogen quiescence in postharvest diseases. Annual Review of Phytopathology, 34: 413-434.

Samson, R. A., E. S. Hoekstra and J. C. Frisvad. 2004. Introduction to food-and airborne fungi. Centraalbureau voor Schimmelcultures (CBS).

Smith, J. S. and S. Pillai. 2004. Irradiation and food safety. Food technology, 58: 48-55.

Sommer, N. F., E. C. Maxie and R. J. Fortlage. 1964. Quantitative dose-response of Prunus fruit decay fungi to gamma irradiation. Radiation Botany, 4: 309-316.

Thomas, P. and J. H. Moy. 1986. Radiation preservation of foods of plant origin. III. Tropical fruits: Bananas, mangoes, and papayas. C R C Critical Reviews in Food Science and Nutrition, 23: 147-205.

Usman, M., B. Fatima, M. M. Khan and M. I. Chaudhry. 2003. Mango in Pakistan: A chronological review. Pakistan Journal of Agricultural Sciences, 40: 151-154.


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