THE ELASTICITY CHARACTERISTICS OF PALM DATE | ||||
| Misr Journal of Agricultural Engineering | ||||
| Article 9, Volume 28, Issue 2, April 2011, Page 386-400 PDF (511.93 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/mjae.2011.105262 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| M. I. Ghonimy1; M. A. Kassem2 | ||||
| 1Prof., Ag. Eng. Dept., Fac. of Ag., Cairo University, Egypt. | ||||
| 2Assoc. Prof., Ag. Eng. Dept., Fac. of Ag., Cairo University, Egypt. | ||||
| Abstract | ||||
| The aim of this research work was to determine the physical and elasticity characteristics of date fruits (Phoenix dactylifera) cv Sukari. The physical characteristic included the date mass, volume, dimensions, moisture content, bulk density, flesh thickness, projected area, and elasticity of fruits, also seed mass and volume. Meanwhile, the elasticity characteristics of fruit included the stiffness coefficient (sc), bioyield stress (σb), rupture stress (σr) and Young's modulus of elasticity (E). The results showed that a good correlation was found between the sc and other properties; σb, σr and E. Also, the average values of sc, σb, σr and E were 0.017 N/mm, 1158.3Pa, 1485.9 Pa and 6.94 kPa respectively. | ||||
| Keywords | ||||
| Date palm; physical characteristics; elasticity; Young's modulus; bioyield; rupture; stiffness and stress | ||||
| References | ||||
|
Abbott, J. A. and D. R. Massie. 1995. Non-destructive dynamic force/deformation measurement of kiwifruit firmness (Actinidia Delicious). Transactions of the ASAE, 38(6): 1809 – 1812.
Abbott, J. A. and R. Lu. 1996. Anistropic mechanical properties of apples. Transactions of the ASAE, 39(4): 1451 – 1459.
Anazodo, U. G. N. and E. R. Norris. 1981. Effects of genetic and cultural practices on the mechanical properties of corncobs. Journal of Agricultural Engineering Research, 26: 97 – 107.
Anazodo, U. G. N. and S. C. Chikwendu. 1983. Poisson’s ratio and elastic modulus of radially compressive biomaterials – I: small deformation approximation. Transactions of the ASAE, 26(3): 923 – 929.
AOAC. 1995. Official methods of analysis (16th ed.). Association of Official Analytical Chemists. Washington, DC.
Balls, R. C. 1995. Horticultural Engineering Technology. Published by MacMillan Publishers ltd, U.K.
Cenkowski, S., Q. Zhang and W.J. Crerar. 1995. Effect of sorption hysteresis on the mechanical behaviour of canola. Transactions of the ASAE, 38(5): 1455 – 1460.
Dinrifo, R. R. and M. A. Faborode. 1993. Application of Hertz’s theory of contact stresses to cocoa pod deformation. Journal of Agricultural Engineering and Technology, 1: 63 – 73.
FAO. 2008. Food and Agriculture Organization of the United Nations. http://faostat.fao.org/site/567/DesktopDefault.aspx?PageID=567
Fecete, A. 1994. Elasticity characteristics of fruits. International Agrophysics, 8(3): 411- 414.
Khazaei, J. and D. D. Mann. 2004. Effects of temperature and loading characteristics on mechanical and stress relaxation properties of sea buckthorn berries, Part 1: compression tests. Agricultural Engineering International Ejournal, Manuscript FP 03 011, http//cigr-ejournal.tamu.edu/html/Volume 6, April.
Mohsenin, N. N. 1970. Physical Properties of Plant and Animal Materials. Gordon and Breach Sc. Pub., N. Y.
Moustafa, A. A. 2001. The effect of pollen source of fruit characteristics of Seewy date cultivar. 2nd conf. on Date Palms (Al-Ain, UAE, March 25-27, 2001)
Prussia, S. E., J. J. Astelford, B. Hewlett, and Y. C. Hung. 1994. Non-destructive firmness measuring device. U.S. Patent No. 5,372,030.
Takao, H. and Ohmori. 1994. Nondestructive hardness meter for fruit. In nondestructive quality evaluation of horticultural crops, Proc. 24th Int. Hort. Cong., Kyoto, Japan, 34-51. G. G. Dull, M. Iwamoto, and S. Kawano, eds. Tokyo, Japan: Saiwai Shobou Publisher.
Timm, E. J., G. K. Brown, P. R. Armstrong, and R. M. Beaudry. 1993. A portable instrument for measuring firmness of cherries and berries. ASAE Paper No. 93-6539. St. Joseph, Mich.: ASAE.
Waziri, A. and J. P. Mittal. 1993. Design related physical properties of selected agricultural products. Agricultural mechanization in ASIA, Africa and Latin America. 14 (1): 20-23. | ||||
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