Journal
FOOD RESEARCH INTERNATIONAL
Volume 36, Issue 9-10, Pages 885-893Publisher
ELSEVIER
DOI: 10.1016/S0963-9969(03)00097-8
Keywords
edible coatings; emulsions; candelilla wax; mesquite gum; plasticizers
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Composite edible coatings were formulated with candelilla wax alone, and candelilla wax blended with beeswax, white mineral oil and oleic acid (2:1 ratios) as the lipid phase, and mesquite gum as the structural material and their corrected water vapor permeability (WVPc) were determined. The coatings were applied to Persian limes and their effect upon physiological weight loss, color and chemical composition changes were evaluated. Addition of the blend of candelilla wax-mineral oil improved the WVPc (P<0.05) of the candelilla wax mesquite gum coating formulation, and provided the lowest physiological weight loss, best dark shade green colour retention and unaltered physicochemical parameters to Persian limes, in comparison to the rest of the coating formulations tested. There was a close relationship between the performance and the microstructure of coatings. Coatings showing more uniform and less defects (fissures, fractures, pinholes) in the surface morphology were those exhibiting the lowest WVP values. (C) 2003 Elsevier Ltd. All rights reserved.
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