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Optimized enzymatic synthesis of the food additive polyglycerol polyricinoleate (PGPR) using Novozym® 435 in a solvent free system

Paper ID Volume ID Publish Year Pages File Format Full-Text
3245 160 2014 7 PDF Available
Title
Optimized enzymatic synthesis of the food additive polyglycerol polyricinoleate (PGPR) using Novozym® 435 in a solvent free system
Abstract

Polyglycerol polyricinoleate (PGPR) is used as an emulsifier in the food industry, especially in chocolate coatings and chocolate bars. PGPR improves the characteristics of molten chocolate by reducing yield stress, facilitating the coating of confectionery pieces, while limiting the amount of cocoa butter involved.The enzymatic synthesis of PGPR catalyzed by lipases presents several advantages over chemical synthesis, including enzyme specificity and the mild conditions needed, thereby avoiding undesirable side-reactions and by-products. A novel process to synthesize PGPR using a biocatalyst, Novozym® 435, is presented. Novozym® 435 is appropriate for catalyzing both the reactions involved in this process. A PGPR fulfilling European specifications for this food additive as well as recommendations set out in the Food Chemical Codex, was obtained using a discontinuous vacuum reactor with a dry nitrogen flow. In addition, the biocatalyst reuse would decrease costs. Moreover, it was confirmed that the ability to obtain PGPR in a one-step reaction significantly shortens the time required.

Keywords
PGPR, polyglycerol polyricinoleate; FCC, Food Chemical Codex; CalB, Candida antarctica lipase B; AV, acid value; HV, hydroxyl value; IV, iodine value; Mn, number average molecular weight; Mw, weight average molecular weight; r, polydispersity indexChromat
First Page Preview
Optimized enzymatic synthesis of the food additive polyglycerol polyricinoleate (PGPR) using Novozym® 435 in a solvent free system
Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 84, 15 March 2014, Pages 91–97
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering