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Monodisperse aqueous microspheres encapsulating high concentration of l-ascorbic acid: insights of preparation and stability evaluation from straight-through microchannel emulsification

Khalid, Nauman, Kobayashi, Isao, Neves, Marcos A., Uemura, Kunihiko, Nakajima, Mitsutoshi and Nabetani, Hiroshi 2015, Monodisperse aqueous microspheres encapsulating high concentration of l-ascorbic acid: insights of preparation and stability evaluation from straight-through microchannel emulsification, Bioscience, biotechnology and biochemistry, vol. 79, no. 11, pp. 1852-1859, doi: 10.1080/09168451.2015.1050988.

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Title Monodisperse aqueous microspheres encapsulating high concentration of l-ascorbic acid: insights of preparation and stability evaluation from straight-through microchannel emulsification
Author(s) Khalid, NaumanORCID iD for Khalid, Nauman orcid.org/0000-0002-8045-199X
Kobayashi, Isao
Neves, Marcos A.
Uemura, Kunihiko
Nakajima, Mitsutoshi
Nabetani, Hiroshi
Journal name Bioscience, biotechnology and biochemistry
Volume number 79
Issue number 11
Start page 1852
End page 1859
Total pages 8
Publisher Taylor & Francis
Place of publication Abingdon, Eng.
Publication date 2015
ISSN 1347-6947
Keyword(s) monodisperse microspheres
L-ascorbic acid
high concentration
stability
sodium alginate
Summary Stabilization of l-ascorbic acid (⌊-AA) is a challenging task for food and pharmaceutical industries. The study was conducted to prepare monodisperse aqueous microspheres containing enhanced concentrations of ⌊-AA by using microchannel emulsification (MCE). The asymmetric straight-through microchannel (MC) array used here constitutes 11 × 104 μm microslots connected to a 10 μm circular microholes. 5-30% (w/w) ⌊-AA was added to a Milli-Q water solution containing 2% (w/w) sodium alginate and 1% (w/w) magnesium sulfate, while the continuous phase constitutes 5% (w/w) tetraglycerol condensed ricinoleate in water-saturated decane. Monodisperse aqueous microspheres with average diameters (dav) of 18.7-20.7 μm and coefficients of variation (CVs) below 6% were successfully prepared via MCE regardless of the ⌊-AA concentrations applied. The collected microspheres were physically stable in terms of their dav and CV for >10 days of storage at 40°C. The aqueous microspheres exhibited ⌊-AA encapsulation efficiency exceeding 70% during the storage.
Language eng
DOI 10.1080/09168451.2015.1050988
Field of Research 090802 Food Engineering
090805 Food Processing
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
ERA Research output type C Journal article
Copyright notice ©2015, Japan Society for Bioscience, Biotechnology, and Agrochemistry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30086036

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