Effect of Methyl jasmonate treatment on antioxidant capacity, internal quality and postharvest life of raspberry fruit

Native population of raspberry fruits (Rubus spp) were treated with Methyl Jasmonate (MJ) fumigation and were assayed for the antioxidant capacity, total anthocyanins and postharvest quality after ۷ days storage at ۴?C. The result of experiment revealed that berries treated with methyl jasmonate (MJ) showed higher antioxidant capacity and total anthocyanins compared to the controled ones (non-treated). Decay incidence was reduced in fumigated fruits during storage at ۴?C, which resulted to long postharvest life (as indicated by fugal decay) compared to the controled ones. Total soluble solid, titratable acidity and pH were influenced by storage periods. Therefore, MJ treatments could not suppress the declining, which happened during storage time. In conclusion, although raspberry fruits treated with MJ maintained higher levels of antioxidant capacity, total anthocyanins compared to untreated fruits during storage, but because of high perishable, MJ treated fruits could not maintain significant changes in internal quality.   REFERENCES  Abers, J.E. and Wrolstad, R.E. (۱۹۷۹) Causative factors of color deterioration in strawberry preserves during processing and storage. J. Food. Science. ۴۴, ۷۵-۷۸. Ancos, B.D., Gonzalez, E. and PilarCano, M. (۱۹۹۹) Differentiation of raspberry varieties according to anthocyanin composition. Z Lebensm Unters Forsch A. ۲۰۸, ۲۲- ۳۸. Ayala-Zavala, J.F., Wang, S.Y., Wang, C.Y. and Gonzalez-Aguilar, G.A. (۲۰۰۴) Methyl jasmonate in conjunction with ethanol treatment increases antioxidant capacity, volatile compounds and postharvest life of strawberry fruit. LWT. ۳۷, ۶۸۷–۶۹۵ Buta, J.G. and Moline H.E. (۱۹۹۸) Methyl jasmonate extends shelf life and reduces microbial contamination of fresh-cut celery and pepper. J. Agric. Food Chem. ۴۶, ۱۲۵۳– ۱۲۵۶. Deng, W., Hamilton-Kemp, T.R., Nielsen, M.T. and Andersen, R.A., Collins, G.B., Hildebrand, D.F. ۱۹۹۳. Volatile allelochemicals released by crucifer green manures. J. Agric. Food. Chem. ۴۱, ۵۰۶–۵۱۰. Ding, C.K., Wang, C.Y., Gross, K.C. and Smith, D.L. (۲۰۰۱) MeSA and MeJA increase steady-state transcript levels of ۷۸ Effect of Methyl jasmonate treatment on antioxidant alternative oxidase and resistance against chilling injury in sweet peppers (Capsicum annuum L.). Plant. Sci. ۱۶۱, ۱۱۵۳–۱۱۵۹, Ding, C.K., Wang, C.Y., Gross, K.C. and Smith, D. L. (۲۰۰۲) Jasmonate and salicylate induce the expression of pathogenesisrelated-protein genes and increase resistance to chilling injury in tomato fruit. Planta. ۲۱۴, ۸۹۵–۹۰۱. Droby, S., Porat, R., Cohen, L., Weiss, B., Shapiro, B., Philosoph-Hasas, S. and Meir, S. (۱۹۹۹) Suppressing green mold decay in grapefruit with postharvest jasmonate application. J. Am. Soc. Hort. Sci. ۱۲۴, ۱۸۴– ۱۸۸. Garcia-Alonso, M., Rimbach, G., RivasGonzalo, J.C. and Pascual-Teresa, S. (۲۰۰۴) Antioxidant and cellular activities of anthocyanins and their corresponding vitisins studies in platelets, monocytes, and human endothelial cells. J. Agric. Food Chem. ۵۲, ۳۳۷۸–۳۳۸۴. Elmastasa, M, Isildaka, O., Turkekulb, I. and Temura, N. (۲۰۰۷) Determination of antioxidant activity and antioxidant compounds in wild edible mushrooms. J. Food Comp Analy. ۲۰, ۳۳۷–۳۴۵. Gonz´alez-Aguilar, G.A., Fortiz, J., Cruz, R., B´aez, R. and Wang, C.Y. (۲۰۰۰) Methyl jasmonate reduces chilling injury and maintains postharvest quality of mango fruit. J. Agric. Food Chem. ۴۸, ۵۱۵–۵۱۹. Gonz´alez-Aguilar, G.A., Buta, J.G. and Wang, C.Y. (۲۰۰۳) Methyl jasmonate and modified atmosphere packaging (MAP) reduce decay and maintain postharvest quality of papaya ‘sunrise’. Postharvest Biol. Technol. ۲۸, ۳۶۱–۳۷۰. Haffner, K., Rosenfeld. H.J., Skrede, G. and Wang, L. (۲۰۰۲) Quality of red raspberry Rubus idaeus L. cultivars after storage in controlled and normal atmospheres. Postharvest Biology and Technology. ۲۴, ۲۷۹– ۲۸۹. Heinonen, I.M., Meyer, A.S. and Frankel, E.N. (۱۹۹۸) Antioxidant activity of berry phenolics on human low-density lipoprotein and liposome oxidation. J. Agric. Food Chem. ۴۶, ۴۱۰۷–۴۱۱۲. Heinonen, I.M., Meyer, A.S. and Frankel, E.N. (۱۹۹۸) The Study of phenolic compounds as natural antioxidants in wine. J. Agric. Food. Chem. ۴۶, ۴۱۰۷– ۴۱۱۲. Heinonen, M., Lehtonen, P. and Hopia, A., (۱۹۹۸) Antioxidant activity of berry and fruit wines and liquors. J. Agric. Food. Chem. ۴۶, ۲۵–۳۱. Chanjirakul K., Wang, S.Y., Wang, C.Y. and Siriphanich, J. (۲۰۰۶) Effect of natural volatile compounds on antioxidant capacity and antioxidant enzymes in raspberries. Postharvest Biology and Technology. ۴۰, ۱۰۶–۱۱۵. Mullen, W., McGinn, J., Lean, M., MacLean, E.J., Gardner, M.R. and P. Duthie, G. G. (۲۰۰۲) Ellagitannins, flavonoids, and other phenolics in red raspberries and their contribution to antioxidant capacity and vasorelaxation properties. J. Agri. Food. Chem. ۵۰, ۵۱۹۱–۵۱۹۶. NCSS, (۲۰۰۰) Statistical system for windows. Kaysville, UT Tamura, H. and Yamagami, A. (۱۹۹۴) Antioxidative Activity of Monoacylated Anthocyanins isolated from muscat bailey a grape. J. Agric. Food. Chem. ۴۲, ۱۶۱۲–۱۶۱۵. Wang, C.Y. and Buta, J.G. (۱۹۹۴) Methyl jasmonate reduces chilling injury in Cucurbita pepo through its regulation of abscisic acid and polyamine levels. Environ. Exp. Bot. ۳۴, ۴۲۷–۴۳۲. Wang, H., Cao,G. and Prior, R.L. (۱۹۹۶) Total antioxidant capacity of fruits. J. Agric. Food .Chem. ۴۴, ۷۰۱–۷۰۵. Wang, S.Y. and Lin, H.S. (۲۰۰۰) Antioxidant Activity in Fruits and Leaves of Blackberry, Raspberry, and Strawberry Varies with Cultivar and Developmental Stage. J. Agric. Food. Chem. ۱۴۰–۱۴۶. Wrolstad, R.E. (۱۹۷۶) Color and pigment analysis in fruit products. Station Bull. ۶۲۱. Agric. Exp. Sta. Oregon Sta. University. Wrolstad, R.E., Putnam, T.P. and Varseveld, G.W. (۱۹۷۰) Color quality of frozen strawberries: effect of anthocyanin, pH, total acidity and ascorbic and variability. J. Food. Sci. ۳۵, ۴۴۸–۴۵۲

Keywords:

Raspberry , Methyl jasmonate , Antioxidant , Anthocyanin , Decay and Fruit quality