含中药功能因子巧克力3D打印成型性研究

目的:自制一种无糖的含灵芝、枸杞、麦冬复合多糖等中药功能因子的巧克力料,并对其3D打印成型性进行研究。方法:以麦芽糖醇和木糖醇的混合物替代蔗糖,并添加具有保健功能的灵芝、枸杞、麦冬复合多糖,利用球磨机制备一种无糖的含中药功能因子的保健巧克力料,并与市售巧克力料和不含中药功能因子的自制空白巧克力料作参照,比较其油脂含量,热学性质,黏度,3D打印的流动性、料线宽度和成型堆积高度。结果:三种巧克力料的油脂含量为37%~38%;熔融温度约32.7 ℃,且峰无裂分,调温成功;流变学性质差异较小;在料筒温度为30~35 ℃,环境温度为25 ℃下,选用0.8 mm打印头进行3D巧克力打印的成品效果最好,且含灵芝、枸杞、麦冬复合多糖的自制保健巧克力料具有更小的线宽波动范围和更高的成型堆积高度,具有更快的凝固能力。结论:含灵芝、枸杞、麦冬复合多糖的自制保健巧克力料可成功用于3D打印,且其保油性优于自制空白巧克力料和市售巧克力料。

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.