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The role of endogenous lipids in the emulsifying properties of cocoa

Gould, Joanne M.; Furse, Samuel; Wolf, Bettina

Authors

Samuel Furse

Bettina Wolf Bettina.Wolf@nottingham.ac.uk



Abstract

This paper describes a study in which the emulsifying properties of cocoa material with and without its lipid fraction were explored. This study was motivated by the commercial interest in naturally-occurring particulate emulsifiers as opposed to the chemically modified emulsifying particles presently available for commercial use. The hypothesis was that endogenous lipids from cocoa were responsible for driving the formation of stable oil-in-water (o/w) emulsions. The data presented includes relative quantification of phospholipids from different commercially available cocoa material using 31P NMR spectroscopy and analyses of the emulsifying power of delipidified cocoa material. The commercially available cocoa material comprised several phospholipids, with phosphatidylcholine being the most abundant in all samples. Dispersions of delipidified cocoa material were found to drive the formation of o/w emulsions despite the absence of lipids. We therefore concluded that the emulsifying behaviour of cocoa material is not entirely reliant upon the endogenous lipids. This suggests that cocoa material may have a new and potentially widespread use in industrial food preparation and may inform manufacturing strategies for novel food grade emulsifiers.

Citation

Gould, J. M., Furse, S., & Wolf, B. (2016). The role of endogenous lipids in the emulsifying properties of cocoa. Frontiers in Chemistry, 4, https://doi.org/10.3389/fchem.2016.00011

Journal Article Type Article
Acceptance Date Feb 22, 2016
Publication Date Mar 11, 2016
Deposit Date Feb 22, 2016
Publicly Available Date Mar 11, 2016
Journal Frontiers in Chemistry
Electronic ISSN 2296-2646
Publisher Frontiers Media
Peer Reviewed Peer Reviewed
Volume 4
Article Number 11
DOI https://doi.org/10.3389/fchem.2016.00011
Keywords Oil-in-water emulsions, Cocoa, Emulsifier, Phospholipids, Pickering
Public URL http://eprints.nottingham.ac.uk/id/eprint/31876
Publisher URL http://journal.frontiersin.org/article/10.3389/fchem.2016.00011/abstract
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

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