Water Absorption and Physical Characteristics of Maize (Zea mays L.) Varieties

Abstract

In this study, the water absorption and physical characteristics of maize varieties were studied. The physical dimensions determined. Water absorption and the moisture gains of the maize seed during immersion in water were determined at 50,70 and 90C by recording the weight increase of the seed with respect to soaking time. A nonlinear moisture diffusion equations was used to modelling of the water absorption curves of the maize varieties at studied temperatures. Page equation and exponential rise equation were chosen for modeling the water absorption of maize in this study. R2 values ranged between 0.9793-0.9934 for the predictions of Page’s equation and between 0.9728-0.9899 for the predictions of exponential rise equation. The values of RMSE ranged 0.0453-0.1291 and the values of and MBE ranged -0.0017 / -0.0071. All these indicators showed that both model made predictions close to perfect fit. However, Page’s equation was recommended for representing the water absorption of maize because of its simplicity.

Keywords

• Maize
• mathematical modeling
• moisture
• physical characteristics

Kaynakça

1. Abu-Ghannam N (1998). Interpretation of the force deformation curves of soaked red kidney beans (Phaseolus vulgaris L.) International Journal of Food Science and Technology. 33:509-515.
2. Battilani P, Formenti S, Ramponi C and Rossi V (2011). Dynamic of water activity in maize hybrids is crucial for fumonisin contamination in kernels. Journal of Cereal Science. 54: 467-472.
3. Coşkun MB, Yalçın I and Özarslan C (2006). Physical properties of sweet corn seed (Zea mays saccharata Sturt.) Journal of Food Engineering. 74: 523-528. FAO (2018). http://faostat.fao.org. Statictic Database. (Accessed 18.02.2018).
4. Khazaei J (2008). Characteristics of mechanical strength and water absorption in almond and its kernel. Cercetări Agronomice în Moldova. 41, 1: (133).
5. Lin SH (1993). Water uptake and gelatinization of white rice. Lebensmittel wissenschaft und Technologie. 26: 276-278.
6. Maskan M (2002). Effect of processing on hydration kinetics of three wheat products of the same variety. J. Food Eng. 52: 337–341,
7. Mohsenin NN (1986). Physical properties of plant and animal materials. 2nd ed. Gordon and Breach Science, Publ. New York.
8. Muramatsu Y, Tagawa A, Kasai T and Takeya K (2006). Volume changes of wheat and barley soaking in water. Journal of Food Engineering. 73: 364-369.

9. Pan Z ve Tangratanavalee W (2003). Characteristics of soybeans as affected by soaking conditions Lebensm.-Wiss. U.-Technol. 36: 143–151.
10. Pilosof AMR, Bouquet R and Bartholomai GB (1985). Kinetics of water uptake by food powders. J. Food Sci. 50,1: 278–282.
11. Princewill OP and Ezinn OE (2014). The effect of soaking time on some engineering properties of brown-speckled african yam bean. International Journal of Engineering and Technology. 4, 12: 700-708,
12. Suthar SH and Das SK (1996). Some physical properties of karingda seeds. J. Agric. Eng. Res. 65: 15-22.
13. Torres J, Socorro A & Hincapié E (2018). Effect of homogeneous static magnetic treatment on the adsorption capacity in maize seeds (Zea mays L.). Bio Electro Magnetics. https://doi.org/10.1002/bem.22120
14. Turhan M, Sayar S and Gunasekaran S (2002). Application of peleg model to study water absorption in chickpea during soaking. Journal of Food Engineering. 53: 153-159.