Effects of some salts on the shelf life of Shahrood Sorkh-e-Fakhri table grapes stored in cold storage

Document Type : Research Article-en

Author

• Seyed Hamidreza Ziaolhagh

Agricultural Engineering Department, Agricultural and Natural Resources Research and Education Center of Semnan Province (Shahrood)

https://doi.org/10.22067/ifstrj.v16i6.84456

Abstract

In this study, some preservative solutions were used as an alternative to sulphur fumigation. For this purpose, sodium metabisulfite, calcium chloride, sodium acetate, and sodium carbonate solutions at concentrations of 0.5, 1 and 2 percent were applied. Grapes (Sorkh-e-Fakhri var.) were dipped in different concentrations of each solution for 2 minutes. After dipping, the surface water of grapes was dried by natural air blowing and then, put in conventional baskets and stored at 0.5-1°C at 85-95% RH for 6 months. The percentage of moldiness, soluble solids, reducing sugar, acidity, and pH of the samples were determined after 2, 4, and 6 months of storage. The results of this study showed that the effect of type of preservative used and the storage time, on the percentage of moldiness and pH and acidity of all samples were significant at 1% level. Sodium metabisulfite had the highest inhibitory effect on mold growth. Calcium chloride had the greatest effect on moisture retention. In addition, the highest pH was observed in samples immersed in sodium carbonate solution. In the case of interactions, the effect of type of preservative and storage time on moldiness, moisture content, brix, sugar content, and acidity, and also the type of preservative and its concentration on moldiness and acidity of samples were significant. According to the obtained results, it was shown that the grapes could be stored for 6 months by dipping them in 0.5% sodium metabisulfite for 2 minutes before cold storage.

Keywords

• Cold storage
• preservatives
• Shelf Life
• SO2 replacement
• table grapes

References

Carvalho, G., L. Lima, J. Silva, H. Siqueira and E. Morais. 2008. Calcium chloride concentrations and storage time on reducing sugar contents of grape cv red globe (Vitis vinifera L). Ciencia e agrotecnologia, 32(3), 894-899.

Chervin, S., D. Lavigne, and P. Westercamp. 2009. Reduction of gray mold development in table grapes by preharvest sprays with ethanol and calcium chloride. Postharvest Biology and Technology, 54, 115–117

Doulatibaneh, H. and S. Zomorodi. 2004. The Effects of Spraying CaCl2 Solution on Quality and Storage Traits of Two Rishbaba and Ghezel Ozum Cultivars of grapes. West Azarbaijan Agricultural and Natural Resources Research Center, AREEO, Urmia, Iran. Research final report No. 83/821.

Fatemi, H. 2007. Principles of food preservation technology. Sahami Enteshar Ltd.

Gabler, F., J. Mercier, J.I. Jimenez and J.L. Smilanick, 2010. Integration of continuous biofumigation with Muscodor albus with pre-cooling fumigation with ozone or sulfur dioxide to control postharvest gray mold of table grapes. Postharvest Biology and Technology, 55, 78–84

Ghodsvali, A. 2000. Evaluating the effect of harvest time on the storability of Shahroud Sorkhe Fakhri variety grape in the cols store. Golestan Agricultural and Natural Resources Research and Education Center, AREEO, Gorgan, Iran. Research final report No. 79/740.

Guzev, L., A. Danshin, T. Zahavi, A. Ovadia, and A. Lichter. 2008. The effects of cold storage of table grapes, sulphur dioxide and ethanol on species of black Aspergillus producing ochratoxin A. International Journal of Food Science and Technology, 43, 1187–1194

Hervieux, V., E.S. Yaganza, J. Arul and R.J. Tweddell. 2002. Effect of organic and inorganic salts on the development of Helminthosporium solani, the causal agent of potato silver scurf. Plant Dis., 86, 1014–1018.

Iran National Organization of Standardization. 2007. Fruit juices – Test methods. 2685.

Jay, J.M., M. J. Loessner and D. A. Golden. 2005. Modern food microbiology, Mortazavi, S. A., Ziaolhagh, H., Mashhad, Ferdowsi university of Mashhad Publication.

Karabulut, O., F. Gabler, M. Mansour and J.L. Smilanick. 2004. Postharvest ethanol and hot water treatments of table grapes to control gray mold. Postharvest Biology and Technology, 34, 169–177

Karabulut, O., G. Romanazzi, J.L. Smilanick and A. Lichter. 2005. Postharvest ethanol and potassium sorbate treatments of table grapes to control gray mold. Postharvest Biology and Technology, 37,129–134

Lurie, S., E. Pesis, O. Gadiyeva, O. Feygenberg, R. Ben-Arie, T. Kaplunov, Y. Zutahy and A. Lichter. 2006. Modified ethanol atmosphere to control decay of table grapes during storage. Postharvest Biology and Technology, 42, 222–227

Meng, X., B. Li, J. Liu and S. Tian. 2008. Physiological responses and quality attributes of table grape fruit to chitosan preharvest spray and postharvest coating during storage. Food Chemistry, 106, 501–508

Miguel A., J. Dias, S. Albertini, and M. Spoto. 2009. Postharvest of grape envolved with films of sodium alginate and cold storage. Ciencia e tecnologia de alimentos, 29 (2), 277-282

Mills, A.A.S., H.W. Platt and R.A.R. Hurta. 2004. Effect of salt compounds on mycelial growth, sporulation and spore germination of various potato pathogens. Postharvest Biology and Technology, 34, 341–350.

Nigro F., L. Schena, A. Ligorio, I. Pentimone, A. Ippolito and M. Salerno. 2006. Control of table grape storage rots by pre-harvest applications of salts. Postharvest Biology and Technology, 42,142–149

Pretel, M.T., M.C. Martinez-Madrid, J.R. Martinez, J.C. Carreño and F. Romojaro. 2006. Prolonged storage of “Aledo” table grapes in a slightly CO2 enriched atmosphere in combination with generators of SO2. LWT - Food Science Technology,39(10),1109–1116.

Qin, G., Y. Zong, Q. Chen, D. Hua and S. Tian. 2010. Inhibitory effect of boron against Botrytis cinerea on table grapes and its possible mechanisms of action. International Journal of Food Microbiology, 138(1-2), 145-150.

Yeol, K., H. Ryun, C. Jeong, K. Yong and K. Hwan. 2002. Study on the extending storage life of grape by applying edible coating materials. Agricultural Chemistry and Biotechnology, 45(4), 207-211

Youssef, K. and S.R. Roberto. 2014. Applications of salt solutions before and after harvest affect the quality and incidence of postharvest gray mold of ‘Italia’table grapes. Postharvest Biology and Technology, 87, 95-102.

Zomorrodi, S. 2005. Storage, processing, and quality control of grapes. Agricultural research and Education Organization Ltd. Tehran