PRE-HARVEST FOLIAR APPLICATION OF VEGETABLES EXTRACT IMPROVES THE QUALITY OF HARVESTED GRAPE
This study focused on examining the effect of vegetables extract foliar application on storage quality of the grapes grape (Vitis vinifera L. cvs. ‘Perlette’ and ‘King’s Ruby’). The vines were sprayed after fruit set twice at 15 days interval at concentrations of 0, 0.20%, 0.30% and 0.40%. Fruit were harvested and kept under cold-storage at 0.5 ±0.5°C and 90% RH for 28 days. The physicochemical properties of treated and untreated berries were analyzed at 7 days intervals during the cold storage. The results showed that the pre-harvest application of vegetable extracts reduced the weight loss and inhibited the fruit decay. Treated grape also had higher ascorbic acid contents, total phenolics, 2,2-diphenyl-1-picrylhydrazyl-radical (DPPH) scavenging activity, and higher soluble solid contents, titratable acidity, and reduced sugar:acid ratio. The concentration of 0.30% and cultivar ‘Kings Ruby’ gave the best result as compared to untreated control. In conclusion, pre-harvest vegetables extract application on berries showed higher antioxidant activities in grape berries, and maintained their post-harvest quality. These results indicated that foliar spray of vegetables extract could effectively improve the fruit quality, mainly through the reduction of phenolic content.
grape berry; vegetable extract; foliar spray; total soluble solids; storage
Bernacchi, C.J., Pimentel, C., Long, S.P. (2003). In vivo temperature response functions of parameters required to model RuBP-limited photosynthesis. Plant Cell Environ., 26, 1419–1430.
Brand-Williams, W., Cuvelier, M.E., Berset, C. (1995). Use of a free radical method to evaluate antioxidant activity. Lebensmitt. Wissenschaft Technol., 28, 25–30.
Chardonnet, C., Donèche, B. (1995). Relation entre la teneur en calcium et la résistance à la digestion enzymatique du tissu pelliculaire au cours de la maturation du raisin. Vitis, 34, 95–98.
Coombe, B.G. (1987). Influence of temperature on composition and quality of grapes. Acta Hortic., 206, 23–35.
Davey, M.W., Montagu, M.V., Inze, D., Sanmartin, M., Kanellis, A., Smirnoff, N., Benzie, I.J.J., Strain, J.J., Favell, D., Fletcher, J. (2000). Plant L-ascorbic acid, chemistry, function, metabolism, bioavailability and effects of processing. J. Sci. Food Agric., 80,
Dey, P.M., Brinson, K. (1984). Plant cell walls. Adv. Carbohydr. Chem., 43, 215–281.
Dokoozlian, N.K., Luvisi, D.A., Schrader, P.L., Kosareff, J.J. (1994). Influence of vine crop load on ‘Redglobe’ table grapes. International Symposium on Table Grape Production, Anaheim, CA. Am. Soc. Enol. Viticult., 221–214.
Hans, Y.S.H. 1992. The guide book of food chemical experiments. Pekin Agricultural University Press, Pekin.
Hussain, P.R., Meena, R.S., Dar, M.A., Wani, A.M. (2012). Effect of post-harvest calcium chloride dip treatment and gamma irradiation on storage quality and shelf-life extension of Red delicious apple. J. Food Sci. Technol., 49, 415–426.
Hussain, P.R., Dar, M.A., Meena, R.S., Mir, M.A., Shafi, F., Wani, A.M. (2008). Changes in quality of apple (Malus domestica) cultivars due to gamma irradiation and storage conditions. J. Food Sci. Technol., 45, 444–449.
Mahajan, B.V.C., Randhawa, J.S., Kaur, H., Dhatt, A.S. (2008). Effect of post-harvest application of calcium nitrate and gibberellic acid on the storage life of plum. Ind. J. Hortic., 65, 94–96.
Neo, G.M., Saikia, L. (2010). Control of post-harvest pericarp browning of litchi (Litchi chinensis). J. Food Sci. Technol., 47, 100–104.
Safdar, Abbas, 2013 July 7 posted in Agri Punjab, Agribusiness Training, Agriculture Pakistan, Agriculture Universities.
Sajid, M., Mukhtiar, M., Rab, A., Shah, S.T. Jan, I. (2014). Influence of calcium chloride (CaCl2) on fruit quality of pear (Pyrus communis) cv. Le conte during storage. Pak. J. Agric. Sci., 51, 113–121.
Singleton, V., Rossi, J. (1965). Colorimetry of total phenolics with phosphomolibdic-phosphotungstic acid reagents. Am. J. Enol. Vitic., 16, 144–158.
Soares, L.A.L., González Ortega, G., Petrovick, P.R., Schmidt, P.C. (2005). Dry granulation and compression of spray-dried plant extracts. AAPS Pharm. Sci. Tech., 6(3), 359–366.
Steel, R.G.D., Torrie, J.H. (1997). Principles and procedures of statistics. 3rd ed. Mc. Graw Hill Pub. Co. Inc., New York, 34–42.
Veltman, R.H., Kho, R.M.A., Van-Schaik, C.R.., Sanders, M.G., Oosterhaven, J. (2000). Ascorbic acid and tissue browning in pears under controlled atmosphere conditions. Post Harvest Biol. Technol., 19, 129–137.
White, P.J., Broadley, M.R. (2003). Calcium in plants. Ann. Bot., 92, 487–511.
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