Mangosteen seed fat (MSF), a novel tropical seed fat, predominantly comprises 1,3-distearoyl-2-linoleoyl-glycerol (StLSt) and 1,3-distearoyl-2-oleoyl-glycerol (StOSt). The fat was blended with cocoa butter (CB) in proportions of 5%, 25% and 60% in the present study, and the binary blends achieved acceptable miscibility. It was indicated that StLSt could be mixed well with the symmetrical monounsaturated triacylglycerols in CB, especially StOSt, 1-palmitoyl-2-oleoyl-3-stearoyl-glycerol (POSt) and 1,3-dipalmitoyl-2-oleoyl-glycerol (POP). Although the solid fat contents of the binary blends gradually decreased with the addition of MSF, which resulted from low-melting triacylglycerols in MSF, the well-compatible fat matrix contributed to keeping their desirable melting behaviors and hardness at hot temperatures. A chocolate fat bloom test showed that replacing CB with 25-60% MSF improved fat-bloom-resistant stabilities effectively. The effective steric hindrance of StLSt crystals may improve fat compatibilities and further delay liquid-oil migration and recrystallization in chocolates during temperature fluctuations.
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| http://dx.doi.org/10.3390/foods14040557 | DOI Listing |
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