Study on the 3D Printing Formability of Chocolate with Chinese Medicine Functional Factor

Objective:A type of sugar-free chocolate containing the polysacharides compound of lucidum, wolfberry and liriope was prepared, and its formability of 3D printing was studied. Methods:A type of sugar-free chocolate containing the polysacharides compound of lucidum, wolfberry and liriope was prepared by replacing sucrose with a mixture of maltitol and xylitol, and some adding Chinese medicine extracts (CME) as hygienical functs. 3D printing formability of chocolates containing the polysacharides compound of lucidum, wolfberry and liriope was studied by comparing commercially available chocolates with Chinese medicine function factor contained chocolates. The oil content, thermal properties and the viscosity of the three chocolate materials were measured. The 3D printer extrusion test was performed on the fluidity, line width and forming height of the three chocolate materials in different barrel temperatures and different environment temperatures. Results:The oil content of three kinds of chocolates was measured to be 37%~38% through petroleum ether extraction. DSC curve showed that the melt temperature of these chocolates was in the vicinity of 32.7℃ and the melting peak had no splitting, demonstrating that successful thermal control had been achieved. The rheological properties of the three chocolates were less different. The 3D chocolate print had the best finished product under the condition of the barrel temperature 30~35℃, the ambient temperature 25℃ and the 0.8 mm print head width. The chocolate containing the Chinese medicine ingredient had a smaller line width fluctuation range, higher forming stack height, a faster solidification ability. Conclusion:Chocolates containing the polysacharides compound of lucidum, wolfberry and liriope can be successfully by using 3D printing techniques and has a better oil-holding capacity than the blank chocolates without CME.