Evaluation of ethyl oleate and potassium carbonate in drying on vine methodology of raisin making under tropical conditions of India
DOI:
https://doi.org/10.48165/Keywords:
DOV, Grape drying, Browning, Storage, Sensory propertiesAbstract
Different levels of ethyl oleate and potassium carbonate were tried to produce raisins by following DOV method. The application of ethyl oleate and potassium carbonate is found suitable for faster drying of grapes (Vitis virifera L.) in DOV method and able to produce quality raisins. However, application of solution (15 ml ethyl oleate and 25g potassium carbonate in 1L water) on first day and on 4th day (11 ml ethyl oleate and 18 g potassium carbonate in 1L water) was found most effective than other treatments. Further, studies on canopy management, load management and refinement of other agro-techniques are needed to obtain quality raisins by adopting DOV under tropical conditions of India.
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References
Adsule P G, Sharma A K, Banerjee K and Karibasappa G S. 2012. Raisin industry in India: adoption of good drying practices for safe raisins. Bull OIV 85(974-975-976): 209- 16.
Espíndola R S, Gutierrez A and Suero E. 2019. Features of raisins grape quality according to the drying process method used. IJRDO-Journal of Agriculture and Research 5(2): 1- 7.
Parpinello G P, Heymann H, Vasquez S, Cathline K A and Fidelibus M W. 2012. Grape maturity, yield, quality, sensory properties and consumer acceptance of Fiesta and Selma Pete Dry on Vine raisins. American J Enol Vitic 63: 212-19.
Sharma A K, Rajguru Y R, Adsule P G and Goswami A K. 2013. Pre-treatments of Tas-A-Ganesh grape bunches and subsequent effect on their drying. Indian J. Hort. 70(1): 107-11.
Sharma A K, Banerjee K, Ramteke S D, Jogaiah S, Somkuwar R G and Adsule P G. 2016. Evaluation of ascorbic acid and sodium metabisulfite applications for improvement in raisin quality. Proc. Natl. Acad. Sci., India, Sect. B Biol. Sci. 86(3): 637-41. DOI: 10.1007/s40011-015-0499-8
Sharma A K, Naik S, Sawant S D, Kadam P and Somkuwar R G. 2017. Evaluation of commercial dipping oil for production of quality raisins from Thompson Seedless grapes. J. Hort. Sci. 12(2): 180-85.
Somers T C and Evans M E. 1977. Spectral evaluation of young red wine, anthocyanin equilibrium, total phenolic, free and molecular SO2. J Sci. Food Agric. 28: 279-87
Venkatram A, Padmavathamma A S, Manorama K and Vijaya D. 2017. Changes in quality of dried-on-vine (DOV) raisins as influenced by pre-drying treatments and seedless varieties of grape (Vitis vinifera L.). Agric. Updat, 12(TECHSEAR-1): 9-17.