Performance of packed bed reactor on the enzymatic interesterification of milk fat with soybean oil to yield structure lipids

Author(s)

de Paula, V, Ariela ; Nunes, Gisele F. M. ^[1] ; de Castro, Heizir E. ^[2] ; dos Santos, Julio C. ^[2]

Affiliation

^[1] Fed Ctr Technol Educ Minas Gerais CEFET, BR-30421169 Belo Horizonte, MG - Brazil

^[2] Univ Sao Paulo, Engn Sch Lorena, BR-12602810 Lorena, SP - Brazil

• Document type: Journal article
• Source: INTERNATIONAL DAIRY JOURNAL; v. 86, p. 1-8, NOV 2018.
• Web of Science Citations: 2

Abstract

The interesterification reaction of milk fat with soybean oil mediated by Rhizopus oryzae lipase immobilised on a hybrid organic-inorganic support of polysiloxane-polyvinyl alcohol (SiO2-PVA) was assessed in a packed bed reactor running in continuous flow (45 degrees C, blend of milk fat and soybean oil 65:35%, w/w). The reactor performance was quantified for different flow rates corresponding to space times (0.5 and 4 h). For each condition, the influence of the space time on the consistency, free fatty acid and solid fat content (SFC, %) was determined. Percentages of reduction on consistency (71.2%) were obtained in relation to the initial blend (1431 +/- 42 gf cm(-2)) and the SFC values (SFC10 (degrees C) = 39.6%; SFC20 (degrees C) = 20.5% and SFC35 (degrees C) = 0.2%) were within the ranges considered ideal for spreads with satisfactory spreadability. The immobilised lipase was stable with respect to its catalytic characteristics, exhibiting a half-life of 39 days. (C) 2018 Elsevier Ltd. All rights reserved. (AU)

• FAPESP's process: 17/11482-7 - Enzymatic synthesis of dietary triglycerides employing Airlift, fixed bed and fluidized bed reactors
• Grantee: Ariela Veloso de Paula
• Support Opportunities: Regular Research Grants