Preparation and characterization of water-in-oil-in-water emulsions containing a high concentration of L-ascorbic acid

Khalid, Nauman, Kobayashi, Isao, Neves, Marcos A., Uemura, Kunihiko and Nakajima, Mitsutoshi 2013, Preparation and characterization of water-in-oil-in-water emulsions containing a high concentration of L-ascorbic acid, Bioscience, biotechnology, and biochemistry, vol. 77, no. 6, pp. 1171-1178, doi: 10.1271/bbb.120870.

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Title Preparation and characterization of water-in-oil-in-water emulsions containing a high concentration of L-ascorbic acid
Author(s) Khalid, NaumanORCID iD for Khalid, Nauman orcid.org/0000-0002-8045-199X
Kobayashi, Isao
Neves, Marcos A.
Uemura, Kunihiko
Nakajima, Mitsutoshi
Journal name Bioscience, biotechnology, and biochemistry
Volume number 77
Issue number 6
Start page 1171
End page 1178
Total pages 8
Publisher Taylor & Francis
Place of publication Abingdon, Eng.
Publication date 2013
ISSN 1347-6947
Keyword(s) W/O/W emulsions
L-ascorbic acid
high concentration
stability
microstructure
Summary This study sought to encapsulate a high concentration of L-ascorbic acid, up to 30% (w/v), in the inner aqueous phase of water-in-oil-water (W/O/W) emulsions with soybean oil as the oil phase. Two-step homogenization was conducted to prepare W/O/W emulsions stabilized by a hydrophobic emulsifier and 30% (v/v) of W/O droplets stabilized by a hydrophilic emulsifier. First-step homogenization prepared W/O emulsions with an average aqueous droplet diameter of 2.0 to 3.0 μm. Second-step homogenization prepared W/O/W emulsions with an average W/O droplet diameter of 14 to 18 μm and coefficients of variation (CVs) of 18% to 25%. The results indicated that stable W/O/W emulsions containing a high concentration of L-ascorbic acid were obtained by adding gelatin and magnesium sulfate in the inner aqueous phase and glucose in both aqueous phases. L-Ascorbic acid retention in the W/O/W emulsions was 40% on day 30 and followed first-order kinetics.
Language eng
DOI 10.1271/bbb.120870
Field of Research 090802 Food Engineering
0601 Biochemistry And Cell Biology
0703 Crop And Pasture Production
Socio Economic Objective 860105 Nutraceuticals and Functional Foods
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2013, Taylor & Francis
Persistent URL http://hdl.handle.net/10536/DRO/DU:30086069

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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