Protection of oxygen sensitive oils by encapsulating the oil with a film forming protein reacted with a carbohydrate having reducing sugar groups which reaction forms Maillard reaction products

摘要

A powder contains an oxygen sensitive oil obtained by drying an emulsion of the oil. The oil is encapsulated within a film forming protein, which, prior to drying to form the powder, has been heated in solution, in the presence of a carbohydrate, for a time to provide sufficient Maillard reaction products to provide resistance to oxidation. A method of forming an emulsion of an oxygen sensitive oil comprises: a) preparing an aqueous mixture of a protein and a carbohydrate which contains a reducing sugar group; b) heating the mixture from 60 to 160oC for a period to allow sufficient Maillard reaction products to form without coagulation consuming at lest 10% of the sugar to provide resistance to oxidation; c) dispersing said oil in the aqueous phase and d) homogenising the mixture to obtain an emulsion which can be dried to produce a powder.