Determination of Mass Transfer Parameters during Deep Fat Frying of Rice Crackers

摘要/Abstract

摘要： The accuracy of the knowledge of mass transfer parameters (effective moisture diffusivity, mass transfer Biot number and mass transfer coefficient) in the case of frying food, is essential and important for designing, modeling and process optimization. This study is undertaken to develop an approach for determining mass transfer parameters during frying of spherical rice cracker in sunflower oil at 150, 170 and 190 °C. These parameters were evaluated from the plots of dimensionless concentration ratios against time of frying. Effective moisture diffusivity, mass transfer Biot number and mass transfer coefficient ranged between 1.24×10-8 to 2.36×10-8 m2/s, 1.96 to 2.34 and 5.51×10-6 to 9.70×10-6 m/s, respectively. Effective moisture diffusivity and mass transfer coefficient were found to increase with an increasing frying temperature, whereas mass transfer Biot number decreased. An Arrhenius-type relationship was found between effective diffusivity coefficient and frying temperature.

关键词: frying, rice-cracker, effective moisture diffusivity, mass transfer Biot number, mass transfer coefficient

Mohammad Taghi Hamed MOSAVIAN, Vahid Mohammadpour KARIZAKI. Determination of Mass Transfer Parameters during Deep Fat Frying of Rice Crackers[J]. RICE SCIENCE, 2012, 19(1): 64-69.

参考文献

Adedeji A A, Ngadi M O, Raghavan G S V. 2009. Kinetics of mass transfer in microwave precooked and deep-fat fried chicken nuggets. J Food Engineering, 91(1): 146?153.
Alvis A, Vélez C, Rada-Mendoza M, Villamiel M, Villada H S. 2009. Heat transfer coefficient during deep-fat frying. Food Control, 20(4): 321?325.
AOAC. 1975. Official Methods of Analysis of the Association of Official Analytical Chemists. Washington, DC: Association of Official Analytical Chemists.
Bird R B, Stewart W E, Lightfoot E N. 2001. Transport Phenomena. Lodon: John Wiley and Sons.
Bon J, Simal S, Rossello C, Mulet A. 1997. Drying characteristics of hemispherical solids. J Food Engineering, 34(2): 109?122.
Costa R M, Oliveira F A R, Delaney O, Gekas V. 1999. Analysis of the heat transfer coefficient during potato frying. J Food Engineering, 39(3): 293?299.
Crank J. 1975. The Mathematics of Diffusion. London, UK: Oxford University Press.
Debnath S, Rastogi N K, Gopala Krishna A G, Lokesh B R. 2009. Oil partitioning between surface and structure of deep-fat fried potato slices: A kinetic study. LWT-Food Sci Technol, 42(6): 1054?1058.
Dong M H, Sang D Z, Wang P, Wang X M, Yang J C. 2007. Changes in cooking and nutrition qualities of grains at different positions in a rice panicle under different nitrogen levels. Rice Sci, 14(2): 141?148.
Doymaz I. 2004. Convective air drying characteristics of thin layer carrots. J Food Engineering, 61(3): 359?364.
FAO. 2008. FAO Statistcs Agriculture Data. http://faostat.fao.org/ site/339/default.aspx.
Farinu A, Baik O-D. 2007. Heat transfer coefficients during deep fat frying of sweetpotato: Effects of product size and oil temperature. Food Res Int, 40(8): 989?994.
Farinu A, Baik O-D. 2008. Convective mass transfer coefficients in finite element simulations of deep fat frying of sweetpotato. J Food Engineering, 89(2): 187?194.
Ghasemi E, Mosavian M T H, Khodaparast M H H. 2009. Effect of stewing in cooking step on textural and morphological properties of cooked rice. Rice Sci, 16(3): 243?246.
Hubbard L J, Farkas B E. 2000. Influence of oil temperature on convective heat transfer during immersion frying. J Food Process Preserv, 24(2): 143?162.
Park K J, Vohnikova Z, Brod F P R. 2002. Evaluation of drying parameters and desorption isotherms of garden mint leaves (Mentha crispa L.). J Food Engineering, 51(3): 193?199.
Kashaninejad M, Mortazavi A, Safekordi A, Tabil L G. 2007. Thin-layer drying characteristics and modeling of pistachio nuts. J Food Engineering, 78(1): 98?108.
Liu Q H, Zhou X B, Yang L Q, Li T. 2009. Effects of chalkiness on cooking, eating and nutritional qualities of rice in two indica varieties. Rice Sci, 16(2): 161?164.
Maneerote J, Noomhorm A, Takhar P S. 2009. Optimization of processing conditions to reduce oil uptake and enhance physico-chemical properties of deep fried rice crackers. LWT-Food Sci Technol, 42(4): 805?812.
Momiyama D T.1981. Method for Making a Rice-cracker or Senbei. United States, 4247567. Yamashiro Seika Kabushiki Kaisha (Aichi, JP), Sakata Beika Kabushiki Kaisha (Yamagata, JP).
Sun G X, Williams P N, Zhu Y G, Deacon C, Carey A M, Raab A, Feldmann J, Meharg A A. 2009. Survey of arsenic and its speciation in rice products such as breakfast cereals, rice crackers and Japanese rice condiments. Environ Int, 35(3): 473?475.
YildIz A T, Palazoglu K, Erdogdu F. 2007. Determination of heat and mass transfer parameters during frying of potato slices. J Food Engineering, 79(1): 11?17.