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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Complex coacervation assisted by a two-fluid nozzle for microencapsulation of ginger oil: Effect of atomization parameters

Full text
Author(s):
Ferreira, Sungil [1] ; Nicoletti, Vania Regina [1]
Total Authors: 2
Affiliation:
[1] Sao Paulo State Univ UNESP, Dept Food Engn & Technol, BR-15054000 Sao Jose Do Rio Preto, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Food Research International; v. 138, n. B DEC 2020.
Web of Science Citations: 0
Abstract

This study investigates the influence of the atomization parameters on complex coacervation by atomization, and is following a preceding study that presented the technique and investigated the effects of formulation. Complex coacervated capsules were produced by atomization, using emulsions with 1 and 6%(w/w) of gelatin and ginger oil atomized over a 1%(w/w) solution of gum Arabic, at constant polymer ratio of 1:2 (gelatin:gum Arabic) at pH 3.5. The air velocity at the nozzle varied from 72 to 168 m/s and the emulsion velocity at the nozzle varied from 0.4 to 0.6 m/s, maintaining the air to liquid velocity ratio at 170, 220 and 270. The mean diameter of the microcapsules produced varied from 52 to 75 mu m and no crosslinking agents were used. The influence of atomization numbers Weber (We) and Ohnesorge (Oh), shear rate and shear stress on the encapsulation performance was carried out and a proposed model was able to predict the final size of the microcapsules produced at We >= 180 and Oh = 0.063. Encapsulation efficiency varied from 9 to 95%, and encapsulation yield varied from 50 to 99%. Finally, optimum conditions based on size prediction and microencapsulation parameters were proposed. (AU)

FAPESP's process: 18/16976-0 - Development of continuous processes for production of ginger (Zingiber officinale Roscoe) oleoresin microcapsules by complex coacervation: atomization and membrane emulsification
Grantee:Sungil Ferreira
Support Opportunities: Scholarships abroad - Research Internship - Doctorate (Direct)
FAPESP's process: 15/23290-0 - Development of semi-continuous processes for production of ginger oil (Zingiber officinale Roscoe) microcapsules by complex coacervation: atomization and membrane emulsification
Grantee:Sungil Ferreira
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)