Moisture dependent engineering properties of onion (Allium cepa var aggregatum) umbels

M M PRAGALYAASHREE; R KAILAPPAN

doi:10.56093/ijas.v84i9.43477

Authors

M M PRAGALYAASHREE Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu 641 003, India
R KAILAPPAN Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu 641 003, India

https://doi.org/10.56093/ijas.v84i9.43477

Keywords:

Angle of repose, Bulk density, Coefficient of friction, Onion umbels, Porosity and True density

Abstract

Physical properties of onion (Allium cepa var aggregatum L.) umbels namely size, shape, bulk density, particle density, angle of repose, frictional properties etc., were determined as a function of moisture content in the moisture range of 10.26 to 50.15% (db). These important physical properties of onion umbels are necessary for the design and development of machines for threshing, cleaning and handling operations of onion umbels. The average length, width and thickness of onion umbels varied from 49.66 to 50.24, 47.20 to 50.20 and 34.89 to 37.69 mm respectively. Average geometric mean diameter of the umbels varied from 43.01 to 46.03 mm while sphericity and mass of hundred umbels (M100) increased from 0.855 to 0.885 and 267.36 to 487.42 g as the moisture content increased in the above range. Bulk density and true density of onion umbels increased from 61.26 to 156.12 and 141.05 to 297.02 kg/m3 respectively for the above said increase in moisture content. Porosity and angle of repose of umbel increased linearly from 45.95 to 56.55% and 30.83 to 38.13° respectively with increase in moisture content from 10.26 to 50.15%. The coefficient of friction of onion umbels also increased linearly with increase in moisture content of umbels on different surfaces. From the investigation on the physical properties of onion umbels, viz. bulk density, true density, porosity, angle of repose, static coefficient of friction on various surfaces, viz. mild steel, rubber sheet, galvanised-iron sheets, aluminium sheets, cardboard sheets and stainless steel sheets increased linearly with increase in the moisture range between 10.26 to 50.15% (db).

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References

Agarwal R L. 2008. Seed Technology. Oxford and IBH Publishing Co (P) Ltd, New Delhi.

Altuntas E, Ozgoz E and Taser O F. 2005. Some physical properties of fenugreek (Trigonella foenum-graceum L.) seeds. Journal of Food Engineering 71(1): 37–43. DOI: https://doi.org/10.1016/j.jfoodeng.2004.10.015

Aviara N A, Haque M A and Izge I A. 2000. Physical and frictional properties of sheanut. Agro Science 1: 19–34. DOI: https://doi.org/10.4314/as.v1i2.1452

Aviara N A, Mamman E and Umar B. 2005. Some physical properties of Balanites aegyptiaca nuts. Biosystems Engineering 92(3): 325–34. DOI: https://doi.org/10.1016/j.biosystemseng.2005.07.011

Aydin C, Ogut H and Konak M. 2002. Some physical properties of Turkish Mahaleb. Biosystems Engineering 82(2): 231–4. DOI: https://doi.org/10.1006/bioe.2002.0062

Bart- plange A and Baryeh E A. 2003. The physical properties of category B cocoa beans. Journal of Food Engineering 60: 219–27. DOI: https://doi.org/10.1016/S0260-8774(02)00452-1

Baryeh E A and Mangope B K. 2003. Some physical properties of Qp – 38 variety of pigeonpea. Journal of Food Engineering 56(1): 59–65. DOI: https://doi.org/10.1016/S0260-8774(02)00148-6

Chandrasekar V and Visvanathan R. 1999. Physical and thermal properties of coffee. Journal of Agricultural Engineering Research 73: 227–34. DOI: https://doi.org/10.1006/jaer.1999.0411

Chandrasekar V. 2013. Moisture dependent physical and thermal properties of coleus tubers. Journal of Agricultural Engineering 50(1): 19–26

Deshpande S D, Bal S and Ojha T P. 1993. Physical properties of soybean. Journal of Agricultural Engineering Research, 56: 89-98. DOI: https://doi.org/10.1006/jaer.1993.1063

Gupta R K and Das S K. 1997. Physical properties of sunflower seeds. Journal of Agricultural Engineering Research 61: 1–8. Indian Horticulture Database, 2011. Government of India. (http://nhb.gov.in) DOI: https://doi.org/10.1006/jaer.1996.0111

Jha S N and Prasad S. 1993. Physical and thermal properties of gorgon nut. Journal of Food Process Engineering 16(3): 237– 45. DOI: https://doi.org/10.1111/j.1745-4530.1993.tb00319.x

Jha S N. 1999. Physical and hygroscopic properties of makhana. Journal of Agricultural Engineering Research 72(2): 145–50. DOI: https://doi.org/10.1006/jaer.1998.0356

Joshi D C, Das S K and Mukherjee R K. 1993. Physical properties of pumpkin seeds. Journal of Agricultural Engineering Research 54: 219–29. DOI: https://doi.org/10.1006/jaer.1993.1016

Kaleemulah S. 1992. The effect of moisture content on the physical properties of grount nut kernels. Tropical Science 32: 129–36.

Konak M, Carman K and Aydin C. 2002. Physical properties of chickpea seeds. Biosystems Engineering 82: 73–78. DOI: https://doi.org/10.1006/bioe.2002.0053

Mohsenin N N. 1970. Physical Properties of Plant and Animal Materials. Gordon and Breach Science Publishers, New York.

Mohsenin N N. 1980. Physical Properties of Plant and Animal Materials. Gordon and Breach Science Publishers, New York.

Mohsenin N N. 1986. Physical Properties of Plant and Animal Materials. Gordon and Breach Science Publishers, New York.

Ogunjimi L A O, Aviara N A and Aregbesola O A. 2002. Some engineering properties of locust bean seed. Journal of Food Engineering 55: 95–9. DOI: https://doi.org/10.1016/S0260-8774(02)00021-3

Ozarslan, C. 2002. Physical properties of cotton seed. Biosystems Engineering 83(2): 169–74. DOI: https://doi.org/10.1006/bioe.2002.0105

Razavi M A, Emadzadeh B, Rafe A and Mohammed A A. 2007. The physical properties of pistachio nut and its kernel as a function of moisture content and variety, Part I Geometric properties. Journal of Food Engineering 81(1): 209–17. DOI: https://doi.org/10.1016/j.jfoodeng.2006.11.003

Sacilik K, Ozturk R and Keskin R. 2003. Some physical properties of hemp seed. Biosystems Engineering 86: 191–8. DOI: https://doi.org/10.1016/S1537-5110(03)00130-2

Singh K K and Goswami T K. 1996. Physical properties of cumin seed. Journal of Agricultural Engineering Research 64(2): 93– 8. DOI: https://doi.org/10.1006/jaer.1996.0049

Srivastava A K, Mahoney W T and West N L. 1990. The effect of crop properties on combine performance. ASAE Paper 63–67.

Suthar S H and Das S K. 1996. Some physical properties of karingda (Citrullus lanatus Mansf) seeds. Journal of Agricultural Engineering Research 65: 15–22. DOI: https://doi.org/10.1006/jaer.1996.0075

Thompson R A and Isaacs G W.1967. Porosity determination of grains and seeds with air comparison pycnometer. Transactions of ASAE: 10: 693–6. DOI: https://doi.org/10.13031/2013.39763

Visvanathan R, Palanisamy P T, Gothandapani L and Sreenarayanan V V. 1996. Physical properties of neem nut. Journal of Agricultural Engineering Research 63: 19–26. DOI: https://doi.org/10.1006/jaer.1996.0003

Yalcýn I and Ozarslan C. 2004. Physical properties of vetch seed. Biosystems Engineering 88(4): 507–12. DOI: https://doi.org/10.1016/j.biosystemseng.2004.04.011

http//www.onions-usa.org (2011).