Production of sn-1,3-distearoyl-2-oleoyl-glycerol-rich fats from mango kernel fat by selective fractionation using 2-methylpentane (cas 107-83-5) based isohexane

Add time:08/18/2019    Source:sciencedirect.com

High-purity isohexane containing 88.12% 2-methylpentane (cas 107-83-5), which has a higher polarity than industrial hexane, was selected to selectively fractionate mango kernel fat to produce 1,3-distearoyl-2-oleoyl-glycerol (SOS)-rich fat. The three-stage fractionation process was optimized by considering the stearin yield and its SOS content to obtain a third stearin (TS). This fat contained a high percentage of SOS (69.2%) with only 0.8% diacylglycerol. Mass spectra and sn-2 fatty acid analyses further revealed that the TS was mainly composed of symmetrical monounsaturated triacylglycerols. Compared with cocoa butter (CB), the unique composition of the TS improved its thermal properties (35.6% and 0% solid fat content at 35 °C for the TS and CB, respectively). In particular, tempered binary fat blends, which were composed of 20–50% TS and 50–80% CB, showed acceptable compatibility at 20–28 °C. The TS could be utilized by chocolate manufacturers to make products suitable for sale and consumption in tropical conditions.

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