Purification Of Lactic Acid Produced From Sugarcane Molasses

In this work, fermentation process was carried out using sugarcane molasses without pretreatment and Lactobacillus plantarum inoculum. The purification of the fermentation product was conducted by using the hybrid short path evaporation. The system allowed to employ lower temperatures of operation due to the use of vacuum and short residence time was achieved, avoiding the tendency of lactic acid decomposition. For tests were used: feed flow rate of 8 mL/min, stirring of 750 rpm, pressure of 1 kPa and it was varied the evaporator temperature from 30 to 170 °C. The experimental results showed 5 times higher the lactic acid concentration than the initial content in the raw material. Copyright © 2014,AIDIC Servizi S.r.l.37367372Abdel-Rahman, M.A., Tashiro, Y., Sonomoto, K., Recent advances in lactic acid production by microbial fermentation processes (2013) Biotechnol. Adv., 31, pp. 877-902Chen, L., Zeng, A., Dong, H., Li, Q., Niu, C., A novel process for recovery and refining of l-lactic acid from fermentation broth (2012) Bioresource Technology, 112, pp. 280-284Fregolente, L.V., Fregolente, P.B.L., Chicuta, A.M., Batistella, C.B., Maciel Filho, R., Wolf-Maciel, M.R., Effect of operating conditions on the concentration of monoglycerides using molecular distillation (2007) Chem. Eng. Res. Des., 85, pp. 1524-1528Hofvendahl, K., Hahn-Hägerdal, B., Factors affecting the fermentative lactic acid production from renewable resources (2000) Enzyme Microb. Tech., 26, pp. 87-207Komesu, A., Martins, P.F., Lunelli, B.H., Morita, A.T., Coutinho, P.L.A., Maciel Filho, R., Wolf Maciel, M.R., Lactic acid purification by hybrid short path evaporation (2013) Chemical Engineering Transactions, 32, pp. 2017-2022Krishna, G., Rangaiah, G.P., Lakshminarayanan, S., Modeling and analysis of intensified processes for economic recovery of high-grade lactic acid (2012) Proceedings of the 22nd European Symposium on Computer Aided Process Engineering, pp. 17-20. , England, London, JuneLunelli, B.H., Andrade, R.R., Atala, D.I.P., Wolf Maciel, M.R., Maugeri Filho, F., Maciel Filho, R., Production of lactic acid from sucrose: Strain selection, fermentation and kinetic modeling (2010) Appl. Biochem. Biotechnol., 161, pp. 227-237Lunelli, B.H., Morais, E.R., Wolf Maciel, M.R., Maciel Filho, R., Process intensification for ethyl lactate production using reactive distillation (2011) Chemical Engineering Transactions, 24, pp. 823-828Martinez, F.A.C., Balciunas, E.M., Salgado, J.M., González, J.M.D., Converti, A., Oliveira, R.P.S., Lactic acid properties, applications and production: A review (2013) Trends Food Sci Tech, 30, pp. 70-83Martins, P.F., Carmona, C., Martinez, E.L., Sbaite, P., Maciel Filho, R., Wolf Maciel, M.R., Evaluation of methyl chavicol concentration by different evaporation processes using central composite experimental design (2012) Sep Purif Technol., 98, pp. 464-471Martins, P.F., Medeiros, H.H.R., Sbaite, P., Wolf Maciel, M.R., Enrichment of oxyterpenes from orange oil by short path evaporation (2013) Sep Purif Technol., 116, pp. 385-390Narayanan, N., Roychoudhury, P.K., Srivastava, A., L(+) lactic acid fermentation and its product polymerization (2004) J Biotechnol., 7, pp. 167-179Wasewar, K.L., Heesink, A.B.M., Versteeg, G.F., Pangarkar, V.G., Reactive extraction of lactic acid using alamine 336 in mibk: Equilibria and kinetics (2002) Journal of Biotechnology, 97, pp. 59-6