SOME PHYSICAL, MECHANICAL AND CHEMICAL PROPERTIES OF POTATO TUBERS (SPUNTA VARIETY)

Document Type : Original Article

Authors

1 PhD. Stud. of Ag. Eng., Fac. of Ag., Benha U., Egypt.

2 Prof. of Ag. Eng., Fac. of Ag., Benha U., Egypt.

3 Researcher Head, Ag. Eng. Res. Inst., Ag.. Res. Center, Egypt.

Abstract

The main aim of this work was to study the physical, mechanical and chemical properties of potato tubers (Spunta variety), to help in designing and developing of specific machine and their operations. The length, width and thickness of potato tubers values ranged from 60.03 to 89.93, 44.67 to 60.02 and 37.69 to 44.64 mm, respectively for all treatments under study. The geometric mean diameter and arithmetic mean diameter of the potato tubers ranged from 46.41 to 61.97 and 47.96 to 64.86 mm, respectively. The potato tuber mass was 63.72, 119.51 and 152.07 g for small, medium and large of potato tuber size, respectively. The potato tuber volume was 53.54, 112.96 and 135.12 cm3 for small, medium and large of potato tuber size, respectively. The true density of the potato tuber ranged from 1190 to 1125 kg m-3 for all treatments under study. The potato tubers surface area was 67.61, 104.68 and 120.58 cm2 for small, medium and large of potato tuber size, respectively. The sphericity and moisture content potato tuber were 77.30, 75.02 and 68.91 and 83.64, 80.83 and 83.19 % for small, medium and large of potato tuber size, respectively. Total soluble solids, firmness, lightness and repose angle of potato tubers ranged from 4.43 to 4.65, 5.40 to 5.70, 69.93 to 73.22% and 30.61 to 33.04º. The total sugar and reducing sugar of potato tubers were 2.76, 2.30 and 2.55 and 0.49, 0.43 and 0.45 % for small, medium and large of potato tuber size, respectively. 

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References

ASAE Standard (1984). ASAE 5352.1.moisture measurement. American Society of Agric. Eng. 2950 Niles Road, St. Joseph, MI 49085-9659.
ASAE Standard (1987). Density, specific gravity, and weight moisture relationships of grain for storage. ASAE Standards 1987: 298-305.
CAPMS (2019). Annual year book for general statistics. Egypt: Central Agency for Public Mobilization and Statistics of ARE.
Chandrasekar, V. and Viswanathan, R. (1999). Physical and thermal properties of coffee. J. Agric. Engng. Res., 73: 227-234.
Dalvand, M.J. (2011). Physical properties of potato tubers cv. analytic cultivated in iran. Vegetable Crops Research Bulletin, 74: 117-128.
Gamea, G.R., Abd El-Maksoud, M.A. and Abd El-Gawad, A.M. (2009). Physical characteristics and chemical properties of potato tubers under different storage systems. Misr J. Ag. Eng., 26(1): 385- 408.
Gorial, B.Y. and O’Callaghan J.R. (1990). Aerodynamic Properties of Grains/Straw Materials. Journal of Agricultural Engineering Research, 46: 275 – 290.
Jannatizadeh A., Naderi Boldaji M., Fa-tahi1 R., Ghasemi Varnamkhasti M. and Tabatabaeefar A. (2008). Some post-harvest physical properties of Iranian apricot (Prunus armeniaca L.) fruit. International Agrophysics. 22: 125-131.
Kacharu, R.P., Gupta R.K. and Alam A. (1994). Physico-Chemical Constituents and Engineering Properties of Food Crops. Scientific Publishers, Jodhpur, India, ISBN: 8172330839.
Khater, E.G. and Afify M.T. (2021). Quality characteristics and shelf life of pepper fruits as influenced by storage conditions and pepper varieties. Misr J. Ag. Eng., 38 (4): 349 – 362.
Khater, E.G. and Bahnasawy A.H. (2016). Watermelon fruits properties as affected by storage conditions. Misr J. Agri. Eng., 33 (1): 101 – 122.
Khater E.G. and Bahnasawy A.H. (2018). Effect of Storage temperature and Packages Type on The Self life and Quality of Green Beans. The 4th International Conference on Biotechnology Applications in Agriculture (ICBAA), Benha University, Moshtohor and Hurghada, 4-7 April 2018, Egypt, 663 -670.
Khater, E.G., Bahnasawy A.H. and Ali S.A. (2014). Physical and Mechanical Properties of Fish Feed Pellets. J. Food Process. Technol. 5 (10): 378. doi: 10.4172/2157-7110.1000378
Malcolm E.W., Tappan J.H. and Sister F.E. (1986). The size and shape of typical sweet potatoes. Trans. ASAE. 29: 678-682.
Mohsenin N.N. (1986). Physical properties of plant and animal materials. Gor-don and Breach Science Publishers, New York.
Mohsenin, N.N. (1986). Physical properties of plant and animal materials second revised. Gordon and Breach Sci. Publ., New York.
Nielsen, S.S. (2010). Phenol-sulfuric acid method for total carbohydrates, in Food Analysis Laboratory Manual. (Berlin: Springer), 47–53. doi:10.1007/978-1-4419-1463-7-6
Oje, K., Alonge A. F. and Adigun Y. J. (2001). Some Engineering Properties of Shear Nut Relevant to Mechanical Processing. Ife Journal of Technology, 10(2): 17 – 20.
Perez-Alegria, L.R., Ciro H.J. and Abud V. L.C. (2001). Physical and Thermal Properties of Parchment Coffee Bean. Transactions of the American Society of Agricultural Engineers, 44(6):1721-1726.
Piret S.R., Kotkas K.,  Rosenberg V., Kulp M., Kuhtinskaja M. and  Vaher M. (2020). Analysis of Total Phenols, Sugars, and Mineral Elements in Colored Tubers of Solanum tuberosum L. Foods,  9(1862): 1-12.
Razavi S.M.A., Emadzadeh B., Rafe A., Mohammad A.A. (2007). The physical properties of pistachio nut and its kernel as a function of mois-ture content and variety: Part I. Geometrical properties. J. Food Eng., 81: 209-217.
Sunmonu M.O., Iyanda M.O., Odewole M.M and Moshood A.N. (2015). Determination of Some Mechanical Properties of Almond Seed Related to Design of Food Processing Machines. Department of Agricultural and Biosystems Engineering, University of Ilorin, Nigeria. Nigerian J. Technolo. Develo., 12(1): 22-26.

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