UTILIZATION OF VISIBLE LIGHT RADIATION TO DETERMINE CRACK PERCENTAGE IN SOME RICE GRAINS VARIETIES | ||
| Misr Journal of Agricultural Engineering | ||
| Article 14, Volume 27, Issue 2, April 2010, Pages 644-661 PDF (706.73 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/mjae.2010.105934 | ||
| Authors | ||
| G. K. Arafa1; A. A. Abd El-Rahmam2 | ||
| 1Senior Researcher, Agric. Eng. Res. Institute, Agric. Res. Center, Dokki, Egypt. | ||
| 2Researcher, Agric. Eng. Res. Institute, Agric. Res. Center, Dokki, Egypt. | ||
| Abstract | ||
| The main objectives of the present study were to develop of an optical instrument to determine grain cracks based on numbering crack grain using a visible light radiation as the light source., and studying the effects of cracks percentage on some mechanical parameters of grains to minimize grain damage and increase rice grain quality. Grains of rice verities were Sakha 103, Yasmein Masry, Giza 101 and Giza 177. Grains with the initial moisture content of about 10.6 % (b.d.), with the husk of rice grain removed by hand. The milled grains were put on screen then exposed to visible light radiation under the screen, then crack grains were counted. The following conclusions were drawn on the basis of results of mechanical testing and light radiation examination: 1) The percentage of cracks for different grains increased with the increase of the deformation of grain, while compression strength, specific work and elasticity modules were decreased, 2) Type of grains effect on the values of mechanical parameters. Sakha 103 grain variety showed higher strength, modulus of elasticity and specific work than Giza 177 which was the lowest one., 3) Rice grain variety of Giza 177 with the moisture content of about 10.6% followed by resulting in a decrease in grain strength, modulus of elasticity and specific work by 44.75, 66.34, and 52.69%50% compared to the Sakha 103 . where the deformation increased by 36.84% , 4) Mechanical parameters showed high correlation with the percentage of cracks. The correlation coefficient for the strength against crack percentage of grain was equal to 0.92, for the modulus of elasticity 0.99, while in the case of specific work it was equal to 0.89., 5)Resistance to cracking of grain to impacts can be advantageous on storage and biological characteristics . On the other hand, high impact resistance is unfavorable in processing because of higher energy costs and less efficiency., 6) Visible light radiation method is useful for estimating seed cracking to dynamical loads., and 7) Crack testing should be continued to study the relationship between the crack value and impact site, on mechanical properties of grains , especially when using grain for industry or germination. | ||
| References | ||
|
Bonazzi, C., M. Peuty, and, A.Themelin. (1997). Influence of drying conditions on the process quality of rough rice. Drying Techno.15 (3&4):1141-1157.
Cnossen, A. G, T. J. Siebenmorgen. (2000). The glass transition temperature concept in rice drying and tempering: effect on milling quality. Rice Quality Workshop 2003 Trans. ASAE 43(6):1661-1667.
El-Raie, A.E.S. (1987). Properties of shelled corn related to mechanical separation. Misr. J. Ag. Eng., 4 (1) : 36-52.
Gunasekaran, S., S. S. Deshpande, M. R. Paulsen, and G. C. Shove. (1985a). Size characterization of stress cracks in corn kernels. Trans.ASAE 28(5): 1668-1672.
Hashemi J., A. Borghei, N. Shimizu, &T. Kimura, ( 2005) “Optimization of final Moisture content of paddy in flat bed dryer with consideration of minimum losses and marketability in Iran,” and Natural Reso. of Khazar, 3(2), 72-82.
Hashemi J.,1Reza Tabatabaekoloor, and Toshinori Kimura (2009) Effects of discharge fan on the drying efficiency in flat-bed type dryer. Proc. world acad. sci, Eng. Tec.. Volume 37 - ISSN 2070-3740. Pwaset Volume 37 . ISSN 2070-3740:85-87.
Kang Y.S., Spillman C.K., Steele J.L., and Chung D.S., 1995. Mechanical properties of wheat. Trans. ASAE, 38(2), 573-578.
Liu, Z. ; C. Fang; Y. Yi-bin, and R. Xiu-qin (2005) Identification of rice seed varieties using neural network (School of Biosystems Eng. and Food Sci., Zhejiang Uni., Hangzhou 310029, China). J. Zhejiang Univ. Sci. ISSN 1009-3095. 6B (11):1095-1100
Niewczas J. and WoŸniak W., (1991). Application of the discretization of an X-ray picture of with grain for the evaluation of endosperm cracks. Zesz. Probl. Post. Nauk Roln., 397: 45-51.
Richard, O.; J. Michael and B. Vethaiya (2008). Integrated crop management (ICM).Dep. Trop. Plant and Soil Sci. U. Hawaii, USA and Intern. Agr. Consul., Coimbatore, India. Implementing ICM Tech. Timor-Leste , August 2008.: 5-10.
Rittiron, R., Saranwong, S., and Kawano, S. (2004). Useful tips for constructing a near infrared-based quality sorting system for single brown-rice kernels. J. Near Infrared Spectrosc. 12:133-139.
Tys J., Szwed G., Falêcki A., and £ukaszuk J., 1996. Use of the dynamic method for estimation of susceptibility of rape and cereal seeds to damages (in Polish). Zesz. Probl. Post. Nauk Roln., 425: 265-268.
Velupilla L. , &J. P. Pandey, (1990) “The impact of fissured rice on milled yields,” Cereal Chem., 1990, 67(2):118-124.
Wall G.H. and Norris E.R., (1981). A technical note on the use of a colarimetric technique for evaluation mechanical corn kernel damage. Canadian J. Agric. Eng., 23: 67-68.
Weller C.L., Paulsen M.R. and Steinberg M.P., (1990). Stress cracking and breakage susceptibility as affected by moisture content at harvest for four yellow dent corn hybrids. Trans. ASAE, 33(3): 863-869.
Woyniak W. (2001). Mechanical properties of wheat grain in relation to internal cracks. Inst. Agrophysics, Polish Acad. Sciences, Dooewiadczalna 4, 20-290 Lublin 27, P.O. Box 201, Poland. Int. Agrophysics, 15: 59-64
Woyniak W. and Styk W., (1996). Internal damage to wheat grain as results of wetting and drying. Drying Tec., 14(2): 349-367. | ||
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