Trend of Changes in Physical Properties of Persimmon Fruit in Ambient Condition Storage

مجله پژوهشهای علوم و صنایع غذایی ایران

Article 6, Volume 8, Issue 4 - Serial Number 22, January 2013   

Document Type: Research Article

DOI: 10.22067/ifstrj.v8i4.20162

Authors

Hassan Safiyari; Ali Asghar Zomorodian^* ; Hossein Rahmanian; Farhad Salmanizade

Shiraz University

Abstract

Physical properties are often required for designing post harvest handling and processing equipment for agricultural products. Persimmon (khormandy cultivar) is rich in vitamin A, calcium, potassium, tannic acid and antioxidant phenolic compounds. In this study changes in the physical properties of persimmon fruit during storage were studied. Properties such as fruit dimensions, mass, geometric mean diameter, arithmetic mean diameter, equivalent diameter, sphericity, aspect ratio, surface area, volume and the static coefficient of friction on three surfaces (plywood, glass, and the galvanized iron sheet) were investigated. The results showed that the mean values of all physical properties decreased with increasing storage time. Experiments were carried out at initial moisture content of 44.26% d.b. Dimensions decreased from 56.01 to 52.57 mm in length, 54.19 to 50.01 mm in width, and 36.72 to 32.48 mm in thickness during storage time. Arithmetic mean diameter, geometric mean diameter and equivalent diameter varied from 48.07 to 44.06 mm, 48.95 to 45.06 mm, and 48.7 to 44.75 mm, respectively. The results also revealed that with increasing in storage time, the sphericity, the aspect ratio and the surface area of persimmon fruits were decreased from 0.859 to 0.8383, 0.6548 to 0.6211 and 72.99 to 61.41 mm2, respectively, while average volume and mass ranged from 59.18 to 45.79 mm3 and 72.8 to 65.45 g, respectively. Also, the static coefficient of friction on all surfaces increased significantly during the storage time.

Keywords

Physical properties; Storage time; Persimmon fruits; Static coefficient of friction

References

توکلی هشجین، ت.، 1383، مکانیک محصولات کشاورزی،(تالیف سیتکی، ج)، انتشارات دانشگاه تربیت مدرس.

دولتی بانه، ح.، جلیلی، ر.، سامط، خالد. و امانی، ع.، 1389، اثر پوشش پلاستیکی ورقه‌های بی سولفیت سدیم بر انبارمانی انگور رقم رشه (سیاه سردشت)، مجله به زراعی نهال و بذر، 4، 26 – 2.

رضوی، س.م.ع. و اکبری، ر.، 1385، خواص بیوفیزیکی محصولات کشاورزی و مواد غذایی، انتشارات دانشگاه فردوسی مشهد، 27.

رضوی، س.م.ع.، زاهدی، ی. و مهدویان مهر، ه.، 1388، بررسی برخی خصوصیات مهندسی دانه بارهنگ، نشریه پژوهش‌های صنایع غذایی ایران، 2، 96 – 88.

عشورنژاد، م.، قاسم نژاد، م.، گرایلو، س. و میر حسینی، س.ک.، 1389، بررسی ویژگیهای کیفی میوه کیوی رقم هایوارد برداشت شده از مناطق مختلف استان گیلان درطی دو ماه نگهداری در سردخانه. نشریه علوم باغبانی 2، 264 – 259.

مسعودی، ح.، طباطبائی فر، س.ا.، برقعی، م.ع. و شاه بیک، م.ع ،1384، تعیین و مقایسه خواص فیزیکی و مکانیکی سه رقم سیب صادراتی، مجله علوم کشاورزی، 11، 17- 1.

Akamine, E. K., 1967, Tangerine storage. Hawaii Agric. Expt. Storage Bull. 142, 15.

Akamine, E. K. and Goo, T., 1979, Effect of storage on compositional changes in ripe sweet citrus fruits. Res. Report, Agric. Expt.-Station, Hawaii University, No. 210, 8 pp.

Angadi, G. S. and Shathakrishnamurthy, 1992, Studies on storage of Coorg mandarins (C. reticulate Blanco). South Indian Hort. 40(5), 289–292.

Davies, R. M. and El-Oken, A. M., 2009. Moisture-dependent physical properties of soybeans. . Int. Agrophysics, 29, 299-303.

Food and Agriculture Organization., 2006, Biodivesity: Agricultural biodiversity in FAO. From http: //www.FAO.org/statistics.Htm.

Galedar, M., Tabatabaeefar, A., Jafari, A., Sharifi, A., O’Dogherty, M.J., Rafee, S. and Richard, G., 2008a, Effects of moisture content and level in the crop on the engineering properties of alfalfa stems. Biosys. Eng., 101(2), 199-208.

Kheiralipour K., Tabatabaeefar, Mobli H., Rafiee S., Sharifi M., Jafari A. and Rajabipour A., 2008, Some physical and hydrodynamic properties of two varieties of apple (Malus domestica Borkh L.). Int. Agrophysics, 22, 225-229.

Liu H. F., Zhang J. G. and Guo L. P., 2007, Study on technology of storage and fresh-keeping of ‘Mopan’ persimmon (in Chinese). Tianjin Sci. Technol. Agric. Fores., 1-23.

Lorestani, A. N. and Tabatabaeefar, A., 2006, Modeling the mass of Kiwi fruit by geometrical attributes. Int. Agrophys, 20, 135–139.

Mohsenin, N. N., 1980, Physical properties of plant and animal materials. Gordon Breach Sci. Presss, New York, USA.

Sirisomboon, P., Kitchaiya, P., Pholpho, T. and Mahuttanyavanitch W., 2007, Physical and mechanical properties of Jatropha curcas L. fruits, nuts and kernels. J. Food Eng., 97, 201-207.