Method for preparation of purified glycerides and products
AssigneeCargill, Incorporated
InventorsJeffrey J. Kolstad, Richard D. Benson, Scott D. Bloomer, Paraskevas Tsobanakis
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Abstract
A method of preparing purified ester compositions is provided. The process can be utilized to isolate and purify monoglycerides and propylene glycol monoesters, to advantage. It can also be used to isolate preferred diester products. The invention also concerns equipment for conduct of the processes, provision of preferred food additives, and provision of preferred food industry compositions. The process generally involves use of liquid-liquid extractions, to advantage.
Claims23
A method of preparing a purified target ester-containing composition;
- said method including steps of:
- (a) providing a crude ester composition comprising:
- (i) target ester selected from the group consisting of:
- (A) C.sub.3 -diol target esters of fatty acids;
- (B) C.sub.3 -triol target esters of fatty acids;
- and,
- (C) mixtures of (i)(A) and (i)(B);
- and,
- (ii) contaminating ester selected from the group consisting of:
- (A) C.sub.3 -diol contaminating esters of fatty acids;
- (B) C.sub.3 -triol contaminating esters of fatty acids;
- and,
- (C) mixtures of (ii)(A) and (ii)(B);
- (b) extracting the crude ester composition of step (a) with an aqueous alcohol phase to selectively extract, into an extractant phase, a first one of:
- (i) selected target ester;
- and,
- (ii) selected contaminating ester;
- relative to a second one of:
- (iii) selected target ester;
- and,
- (iv) selected contaminating ester;
- (c) treating the extractant phase from step (b) with a crude triglyceride phase to form:
- (i) a purified extractant phase;
- and,
- (ii) a triglyceride phase;
- and,
- (d) separating the purified extractant phase resulting from step (c) from the triglyceride phase resulting from step (c).
A method of preparing a purified target ester-containing food composition;
- said method including steps of:
- (a) providing a crude ester composition comprising:
- (i) target ester selected from the group consisting of:
- (A) C.sub.3 -diol target esters of fatty acids;
- (B) C.sub.3 -triol target esters of fatty acids;
- and,
- (C) mixtures of (i)(A) and (i)(B);
- and,
- (ii) contaminating ester selected from the group consisting of:
- (A) C.sub.3 -diol contaminating esters of fatty acids;
- (B) C.sub.3 -triol contaminating esters of fatty acids;
- and,
- (C) mixtures of (ii)(A) and (ii)(B);
- (b) extracting the crude ester composition of step (a) with an aqueous alcohol phase to selectively extract, into an extractant phase, a first one of:
- (i) selected target ester;
- and,
- (ii) selected contaminating ester;
- relative to a second one of:
- (iii) selected target ester;
- and,
- (iv) selected contaminating ester;
- (c) treating the extractant phase from step (b) with a crude triglyceride phase to form:
- (i) a purified extractant phase;
- and,
- (ii) a triglyceride phase;
- (d) separating the purified extractant phase resulting from step (c) from the triglyceride phase resulting from step (c), and
- (e) isolating a purified monoglyceride product from the purified extractant phase;
- and
- (f) incorporating an emulsifying effective amount of the purified monoglyceride product into a margarine composition.
A method of preparing a purified diglyceride food composition from a crude ester composition containing monoglycerides, diglycerides and triglycerides;
- said method including the steps of:
- (a) providing a crude ester composition containing at least four times as much diglycerides as triglycerides, by wt.;
- (b) extracting the crude ester composition of step (a) with an aqueous alcohol phase tuned to selectively extract, into the extractant phase, monoglycerides, to form:
- (i) an extractant phase;
- and,
- (ii) a diglycerides phase;
- and,
- (c) separating the extractant phase and diglycerides phase from step 22(b) to provide a purified diglyceride food composition;
- (d) said step of extracting being conducted sufficiently to extract at least 90%, by wt., of monoglycerides in the crude ester composition without extracting more than 20%, by wt., of the diglycerides.
Dependencies are inferred from the claim text.