Solid phase glycerolysis
An enzymatic solid phase reaction for preparing a solid having greater than 40% monoglyceride from a reaction mixture; wherein the reaction mixture comprises: (i) lipase; (ii) at least 14 weight % glycerol; and (iii) glyceride; and optionally (iv) lecithin; such that if (iv) is not present then the glyceride (iii) has an iodine value of between about 5 and about 35, and a solid fat content of more than about 75% at 20° C. The present invention further relates to a process of preparing an enzymatic solid phase reaction mixture for preparing a solid having greater than 40% monoglyceride.
1. A process for preparing an enzymatic solid phase reaction mixture for preparing a solid having greater than 40% monoglyceride, said process comprising:
(i) melting a triglyceride derived from palm oil, sunflower oil, rape seed oil, soya bean oil, safflower oil, cottonseed oil, ground nut oil, corn oil, olive oil, peanut oil, lard, tallow, or mixtures thereof, with a lecithin, to form a fat phase;
(ii) adding to said fat phase a solution of lipase in glycerol, wherein the glycerol is present in an amount of at least 14% by weight of the total mixture, and stirring the resultant mixture;
(iii) homogenizing said mixture; and
(iv) processing said enzymatic solid phase reaction mixture by (a) spray crystallizing or (b) pelleting, flaking or extruding and grinding.
2. The process according to claim 1 wherein the triglyceride is hardened palm stearin.
3. The process according to claim 1 wherein the lecithin is selected from plant lecithin or powdered lecithin.
4. The process according to claim 1 wherein the lipase is derived from Pseudomonas sp., Chromobacterium viscosum, Pseudomonas cepacia, Pseudomonas stutzeri, Pseudomonas flourescens, Mucor miehei or Candida antartica.
5. The process according to claim 1 wherein the lecithin is present in an amount from about 1% to about 50% by weight.
6. The process according to claim 1 wherein the triglyceride is present in an amount from about 1% to about 86% by weight.
7. The process according to claim 1 wherein glycerol is present in an amount from about 14% to about 25% by weight.
8. The process according to claim 1 wherein the enzymatic solid phase reaction mixture is spray crystallized.
9. The process according to claim 1 wherein a solid carrier for the glycerol is added to said reaction mixture.
10. The process according to claim 9 wherein said solid carrier for the glycerol is sugar beet fibre.
11. The process according to claim 1 wherein processing of the enzymatic reaction mixture is by pelleting, flaking or extruding and grinding.