| 摘要 |
The invention provides an encapsulate comprising a protein-based encapsulation matrix that envelops one or more oil droplets containing at least 3 wt. % of polyunsaturated fatty acids (PUFAs) by weight of oil; said encapsulate having a mass weighted average diameter in the range of 0.5-5000 μm, wherein the protein-based encapsulation matrix contains at least 10 wt. % of a protein that has been cross-linked by means disulfide cross-links, said protein-based matrix further being characterized in that: i. less than 75 wt. %, preferably less than 40 wt. % of the protein contained in the protein-based matrix can be dissolved when 75 mg of the encapsulate is dispersed in 50 ml distilled water having a temperature of 5° C. at any pH within the range of 3.0-7.0; ii. the weight percentage of the protein that can be dissolved is at least a factor 1.3 higher when in the procedure under i) the distilled water is replaced by an aqueous solution of 2 wt. % dithiothreitol (DTT). The encapsulate according to the present exhibits very high oxidative stability and can be produced via a robust and relatively simple manufacturing process. The invention also provides a process for the manufacture of the aforementioned encapsulate.
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