This comparative study investigated some physical, milling and cooking properties of four new rice varieties (FARO 44, FARO 52, FARO 60 and FARO 61) in Nigeria. The varieties were processed into white rice and their properties analyzed separately using standard procedures. Results showed that paddy length, paddy-length-to-width-ratio, equivalent diameter, sphericity, grain volume, aspect ratio, thousand paddy grain weight, milled rice length, milled rice width, milled rice length to width ratio, milling recovery, head milled rice, broken milled rice, L*, a*, b*, elongation ratio, cooked-rice-lengthto-breadth ratio, water uptake ratio and cooking time were significantly different (p<0.05) for all the varieties. Milling recovery was found to vary from 65.3 to 68.33%; with FARO 60 having the highest head milled rice. It was observed that FARO 44 had the longest cooking time, elongation ratio and cooked rice length/breadth ratio while FARO 61 was found to have the highest water uptake ratio. There was significant positive correlation (r = 0.824) between percentage head milled rice and milling recovery while negative correlation existed between cooking time and L* (r = - 0.711). This information could be exploited by rice processors in the post-harvest processing of the varieties.
Aboubakar N, Scher Y, Mbofung J, C. Physicochemical, thermal properties and microstructure of six varieties of taro (colocasia esculenta l. schott) flours and starches. Journal of Food Engineering. 2008. p. 294–305.
2.
Anonymous. Annual report for 1997. 1997. p. 24–5.
3.
Correa P, Da Silva F, Jaren C, Afonso Junior P, Arana I. Physical and mechanical properties in rice processing. Journal of Food Engineering. 2007. p. 137–42.
4.
Danbaba N, Anounye J, Gana A, Abo M, Ukwungwu M. Grain quality characteristics of ofada rice (oryza sativa l.): cooking and eating quality. International. Food Research Journal. 2011. p. 629–34.
5.
Danbaba N, Anounye J, Gana A, Abo M, Ukwungwu M, Maji A. Physical and pasting properties of “ofada” rice (oryza sativa l.) varieties. Nigerian. Food Journal. 2012. p. 30009–15.
6.
Ijfs October. 2017. p. 255.
7.
Dipti S, Bari M, Kabir K. Grain quality characteristics of some beruin rice varieties of bangladesh. Pakistan Journal Nutrition. 2003. p. 242–5.
8.
Firouzi S, Alizadeh M, Minaei S. Effect of the size of perforated screen and blade-rotor clearance on the performance of engleberg rice whitener. African Journal of Agricultural Research. 2010. p. 941–6.
9.
Fitzgerald M, Mccouch S, Hall R. Not just a grain of rice: the quest for quality. Trends in Plant Science. 2009. p. 133–9.
10.
Frei M, Siddhuraju P, Becker K. Studies on the in vitro starch digestibility and the glycemic index of six different indigenous rice cultivars from the philippines. Food Chemistry. 2003. p. 395–402.
11.
Alkali digestion. Standard Evaluation for Rice: International Rice Testing Program, 2nd Edition. IRRI. 1980. p. 43–4.
12.
Izawa T. The process of rice domestication: a new model based on recent data. Rice. 2008. p. 127–34.
13.
Jain R, Bal S. Properties of pearl millet. Journal of Agricultural Engineering Research. 1997. p. 85–91.
14.
Juliano B. Rice chemistry and quality. 2003.
15.
Kaur M, Kaushal P, Sandhu K. Studies on physicochemical and pasting properties of taro (colocasia esculenta l.) flour in comparison with a cereal, tuber and legume flour. Journal of Food Science and Technology-mysore. 2013. p. 94–100.
16.
Mckenzie K, Rutger J. Geneticanalysis of amylose content, alkali spreading score, and grain dimensions in rice. Crop Science. 1983. p. 306–13.
17.
Mir S, Bosco S, Sunooj K. Evaluation of physical properties of rice cultivars grown in the temperate region of india. International Food Research Journal. 2013.
18.
Mohsenin N. Physical properties of plant and animial materials. structure, physical characterisitics and mechanical properties. Gordon & Breach Science Publishers Inc; 1970.
19.
Nalladurai K, Alagusundaram K, Gayathri P. Airflow resistance of paddy and its byproducts. Biosystems Engineering. 2002. p. 67–75.
20.
Oko A, Ubi N, Dambaba B. Rice cooking quality and physico-chemical characteristics: a comparative analysis of selected local and newly introduced rice varieties in ebonyi state, nigeria. Food and Public Health; 2012. p. 43–9.
21.
Rather T, Malik M, Dar A. Cogent Food & Agriculture. 2016. p. 1178694.
22.
Ravi U, Menon L, Gomathy G, Parimala C, Rajeshwari R. Quality analysis of indigenous organic asian indian rice variety-salem samba. Indian Journal of Traditional Knowledge. 2012. p. 114–22.
23.
Shittu T, Olaniyi M, Oyekanmi A, Okeleye K. Physical and water absorption characteristics of some improved rice varieties. Food and Bioprocess Technology. 2012. p. 298–309.
24.
Simonyan K, El-Okene A, Yiljep Y. Some physical properties of samaru sorghum 17 grains. Agricultural Engineering International: the CIGR Ejournal Manuscript FP. 2007. p. 1–15.
25.
Singh M, Kaur P, Singh J. Physical properties and milling characteristics of different paddy varieties. International Journal for Science and Advance Research in Technology. 2015. p. 59–63.
26.
Ijfs October. 2017. p. 245–56.
27.
Singh N, Kaur L, Sodhi N, Sekhon K. Physicochemical, cooking and textural properties of milled rice from different indian rice cultivars. Food Chemistry. 2005. p. 253–9.
28.
Thakur A, Gupta A. Water absorption characteristics of paddy, brown rice and husk during soaking. Journal of Food Engineering. 2006. p. 252–7.
29.
Varnamkhasti M, Mobli H, Jafari A, Keyhani A, Soltanabadi M, Rafiee S, et al. Some physical properties of rough rice (oryza sativa l.) grain. Journal of Cereal Science. 2008. p. 496–501.
30.
Wiset L, Srzednicki G, Driscoll R, Nimmuntavin C, Siwapornak P. Agricultural Engineering International: the CIGR Journal of Scientific Research and Development. 2001. p. 1–10.
31.
Wozniak W. Mechanical properties of wheat grain in relation to internal cracks. International Agrophysics. 2001. p. 59–64.
32.
Zareiforoush H, Hosseinzadeh B, Adabi M, Motavali A. Moisture-dependent physical properties of paddy grains. Journal of American Science. 2011. p. 175–82.
33.
Zareiforoush H, Komarizadeh M, Alizadeh M. Effect of moisture content on some physical properties of paddy grains. Research Journal of Applied Sciences, Engineering and Technology. 2009. p. 245–56.
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