Quality evaluation of edible film coated tomato (Solanum lycopersicum) fruits
Keywords:
aloe vera gel, edible film coating, fruit quality, mature green tomato, postharvest fruit rotAbstract
Quality parameters of two aloe based gel coated mature green tomato fruits of variety Akshaya were compared for selecting the most efficient and economic edible film coating capable of maintaining fruit quality. Harvested fruits after surface sanitization with 2 ppm ozonized water for 10 minutes and air drying were dipped in two formulations viz., pure aloe gel (aloe gel + 1% potassium alginate) and Papaya leaf extract incorporated aloe gel (PLEAG) (Aloe gel + papaya leaf extract, 1:2 + 1% potassium alginate) @ 2% concentration for two minutes. Fruits treated with PLEAG had higher firmness and bio yield point with low pectin methyl esterase and poly galacturonase activity and high pectin content. Both formulations were equally effective in maintaining total solids as well as total and alcohol insoluble solids during the entire storage period of 36 days. Sensory perceptions of textural characters in both treatments were similar. Though no antimicrobial activity against Erwinia and Rhizopus was noticed under in vitro, they had suppressed postharvest infection in vivo, and fruit rot symptoms were not observed on coated fruits. Cost of pure aloe and PLEAG formulation for 100 kg tomatoes were INR 55.48/- and 45.87/- respectively, proving the possibility of aloe gel substitution with papaya plant leaf extracts without reducing efficiency. Dipping in 2% aloe gel + papaya leaf extract (1:2) + 1% potassium alginate for two minutes was the efficient and economic edible coating for maintaining mature green tomato quality.References
Abbott, J.A. 2004. Textural quality assessment for fresh fruits and vegetables. Adv.Expt Med. Biol.542:265-79.
Amare, A.M. 2002. Mycoflora and mycotoxins of major cereal grains and antifungal effects of selected medicinal plants from Ethiopia. Doctoral Dissertation. Georg-August University of Gottingen. CuvillierVerlag Gottingen.
Awang, Y.B., Chuni, S.H., Mohamed, M.T.M., Hafiza, Y. and Mohamad, R.B. 2013. Polygalacturonase and Pectin methylesterase activities of CaCl2 treated red fleshed dragon fruit (Hyloceruspolyrhizus) harvested at different maturity. America J. Agric. Biol. Sci. 8 (2): 167-172.
Banos, B.S., Barrera-Necha, L.L., Bravo-Luna, L. and Bermudez- Torres, K.2002. Antifungal activity of leaf and stem extracts from various plant species on the incidence of Colletotrichumgloeosporioides of papaya and mango fruit after storage. Mex. J. Phytopathol. 20: 8–12.
Brishti, F.H., Misir, J., Sarker, A. 2013. Effect of Biopreservatives on storage life of Papaya fruit (Carica Papaya L.). Int. J. Food Stud. 2(1): 126-136.
Brummell, D. and Harpster, M. 2001. Cell wall metabolism in fruit softening and quality and its manipulation in transgenic plants. Plant. Mol.Biol. 47 (1-2): 311-340.
Chandran, T.T. 2018. .Aloe vera based edible film coating for shelf life extension in tomato (Solanum lycopersicum). Ph.D thesis submitted to Kerala Agricultural University. 302 p.
Dwivedi, B.P. and Shukla, D.N. 2000. Effect of leaf extracts of some medicinal plants on spore germination of some Fusarium species. Karnataka J. Agric.Sci. 13: 153-154.
Habeeb, F., Shakir, E., Bradbury, F., Cameron, P., Taravati, M.R., Drummond, A.J., Gray, A.I. and Ferro, V.A. 2007. Screening methods used to determine the anti-microbial properties of Aloe vera inner gel methods. Methods. 42 (4): 315-320.
Kader, A. A., Morris, L. L. and Chen, P. 1978. Evaluation of two objective methods and a subjective rating scale for measuring tomato fruit firmness. J Amer. Soc. Hortic. Sci. 103(1): 70-73.
Kagale, S., Marimuthu, T., Thayumanavan, B., Nandakumar, R. and Samiyappan, R. 2004. Antimicrobial activity and induction of systemic resistance in rice by leaf extract of Datura metel against Rhizoctonia solani and Xanthomonas oryzae pv.oryzae. Physiol. Mol. Plant Pathol.65: 91-100
Lamb, F.C. 1977. Tomato products. National Canners Association. Singapore 262p.
Maharaj, R. and Sankat, C.K. 1990. Storability of papayas under refrigerated and controlled atmosphere. Acta Hortic. 269: 375-386.
Marpudi, S.L., Abirami, L.S.S., Pushkala, R. and Srividya, N. 2011. Enhancement of storage life and quality maintenance of papaya fruits using Aloe vera based antimicrobial coating. Indian J. Biotechnol. 10: 83-89.
Martinez-Romero, D., Alburquerque, N., Valverde, J., Guillen, F., Castillo, S., Valero, D. and Serrano, M. 2006. Postharvest sweet cherry quality and safety maintenance by Aloe vera treatment: A new edible coating. Postharvest Biol. Technol. 39 (1): 93-100.
Martins, R.C., Lopes, V.V., Vicente, A.A. and Teixeira, J.A. 2008. Computational shelf- life dating: complex systems approaches to food quality and safety. Food Bioprocess Technol. 1: 207-222
Maughan, R. G. 1984. Method to increase color fastness of stabilized Aloe vera, US Paent4, 465,629
Moyer, J.C. and Holgate, K.C. 1948. Determination of alcohol insoluble solids and sugar contents of vegetables. Anal. Chem. 20(5) 472-474.
Package of Practices Recommendations – Crops. 2016. Directorate of Extension, Kerala Agricultural University, Mannuthy.
Ranaware, A., Singh, V. and Nimbkar, N. 2010. In vitro antifungal study of the efficacy of some plant extracts for inhibition of Alternaria carthami fungus. Indian J. Nat. Prod. Resour. 1: 384-386.
Ranganna, S. 1979. Manual of Analysis of Fruit and Vegetable Products. Tata McGraw-Hill Publ Co Ltd. New Delhi.
Tieman, D.M. and Handa, A.K. 1994. Reduction in Pectin Methylesterase Activity Modifies Tissue Integrity and Cation levels in Ripening Tomato (Lycopersiconesculentum Mill.) Fruits. Plant Physiol. 106: 429-436
Van Dijk, C., Boeriu, C., Stolle- smits, T. and Tijskens, L.M.M. 2006. The firmness of stored tomatoes (cv. Tradiro). 2. Kinetic and Near Infrared models to describe pectin degrading enzymes and firmness loss. J. Food Engineering . 77 (3) 585-593
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