Construction Of Healthy Special Oil

Using sterols to alternative part of trans-and saturated lipids form the skeleton for oil structuring, study the formation of oleogels based on healthy macromolecular that provide the similar texture and sensory gain from traditional triacylglyceride(TAG) structuring. In this study, we determined the bonding forms between sterols and the fatty acids composition of oil material, construction trans-free margarine with low saturated lipids.The bonding forms between sterols were studied by Fourier transform infrared spectrometer (FTIS). The stretching vibration of hydroxyl group of sterol A was shifted obviously to the lower wavenumber as well as the carbonyl group of sterol B, which indicated the hydrogen bonds exist. The greatest hardness was also observed by texture analyzer and penetration test. The oil phase presented a new kind of self-assembly crystal structure with four petal shape, which was observed by polarized light microscopy.Internal standard method was used to quantify the content of fatty acid methyl ester. The determination limit was 7.8 μg/ml. The relative standard deviation ranged between 0.63% and 0.74% and the recovery of samples between 101.5% and 105.5 %. High degree of accuracy and precision can meet the demand.Trans-and saturated fatty acids of control samples were analyzed by Fourier transform infrared spectrometer and gas chromatography. The content of trans fatty acids range from 1.83% to 7.23% among six market butters. The TFAs content of Lurpak spreadable was 1.83% so it could be used as control sample.Methods orthogonal design was employed to optimize the preparation procedure. The hardness, crystal form and sensory evaluation of margarine were used as index. The final formulas of healthy margarine were determined.During storage, the peroxide value and acid value of margarine did not exceed national standards. The crystal form change from β to β after 50days. The mold and microbes were all fit national standards, pathogens were not detected.