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Optimization of Reaction Parameters for the Production of Fatty Acids from Rice Bran Oil

C V Subrahmanyam, K. Siva Prasada Rao


Fatty acids are usually produced industrially by the hydrolysis of triglycerides and glycerol as by product. In this reaction, 1 molecule of fat/oil will react with 3 molecules of water. The hydrolysis can be done by with and without catalyst. The catalyst process has some inherent problems. To get better quality of fatty acids and high yield the most of the industries preferring the hydrolysis without catalyst. The present study is aimed at optimization of reaction conditions for hydrolysis of rice bran oil without catalyst. The effect of temperature, reaction time and amount water is studied. It was observed that the temperature increases the conversion was increased. It was observed that the degree of splitting was increased with increase of contact time up to 150 minutes and water content up to 50% on oil weight basis. The conversion was increased marginally above 150 minutes of reaction time and 50% water content on the weight of oil. Hence, the optimum temperature was 230 °C, reaction time 150 minutes and 50% water content on oil weight were optimum for hydrolysis of oil/fat.

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Kosugi Y., Suzuki H., Funada T. Hydrolysis of beef tallow by lipase from Pseudomonas sp., Biotechnol Bioeng. 1988; 31: 349–56p.

Haupt D.E., Drinkard G., Pierce H.F. Future of petrochemical raw materials in oleochemical markets, J Am Oil Chem Soc. 1984; 61(2): 276p. doi:10.1007/BF02678781.

Akaike Y. Other oleochemical uses: palm oil products, J Am Oil Chem Soc. 1985; 62(2): 335p. doi:10.1007/BF02541401.

Muckerheide V.J. Fat splitting and distillation. Lectures of the 1952 short course on soaps and synthetic detergents, J Am Oil Chem Soc. 1952; 29(11): 490–5p.

Holla K.S., Press R.R. Industrial hydrogenation of rice bran oil a substitute for Tallow, J Am Oil Chem Soc. 1987; 64(9): 1334–6p.

Ju Y.H., Vali S.R. Rice bran oil as a potential resource for biodiesel: a review, J Sci Ind Res. 2005; 64: 866–82p.

Padmini P., Rakshit S.K., Baradarajan A. Lipase catalyzed hydrolysis of rice bran oil by free and immobilized enzyme system in batch stirred reactor, Bioprocess Eng. 1993; 9: 103–6p.

Salimon J., Abdullah B.M., Salih N. Hydrolysis optimization and characterization study of preparing fatty acids from Jatropha curcasseed oil, Chem Central J. 2011; 5: 67p. DOI: 10.1186/1752-153X-5-67.

Bureau of Indian Standards. New Delhi, 1964; IS - 548 (Part-1).


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