Title: Emulsification and microencapsulation properties of sodium caseinate/carbohydrate blends
Abstract: Emulsions of soya oil in mixed solutions of sodium caseinate (Na Cas) and carbohydrates of various dextrose equivalence (DE) were prepared and subsequently spray-dried to yield powders with 20–75% oil. Effects of DE (0–50), core/wall and Na Cas/carbohydrate ratios and total solids concentration on emulsion oil droplet size and microencapsulation efficiency (ME) and redispersion behaviour of spray-dried emulsions were examined. Emulsion oil droplet size was not affected by DE in most cases but was dependent on Na Cas/carbohydrate and core/wall ratio. ME of dried emulsions increased with increasing DE and decreased at Na Cas/carbohydrate ratios <1 : 19 and at high core/wall ratios. ME was negatively correlated with particle size of redispersed dried emulsions (R=−0.81). A wall material combining mixtures of Na Cas and DE 28 at ratios ⩾1 : 19, offered the best encapsulating properties.
Publication Year: 2001
Publication Date: 2001-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 282
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