藏红花和甜菜根提取物包埋在麦芽糊精、阿拉伯胶、改性淀粉和壳聚糖中：在口香糖体系中的应用。
Saffron and beetroot extracts encapsulated in maltodextrin, gum Arabic, modified starch and chitosan: Incorporation in a chewing gum system.
机构信息
Laboratory of Food Chemistry and Technology, School of Chemical Engineering, National Technical University of Athens, 5 Iroon Polytechniou Str., Polytechniou, Zografou, 15780 Athens, Greece.
Laboratory of Food Chemistry and Technology, School of Chemical Engineering, National Technical University of Athens, 5 Iroon Polytechniou Str., Polytechniou, Zografou, 15780 Athens, Greece.
出版信息
Carbohydr Polym. 2015 Aug 20;127:252-63. doi: 10.1016/j.carbpol.2015.03.049. Epub 2015 Mar 30.
Maltodextrin (MD-21DE), gum Arabic (GA), gum Arabic-modified starch (GA-MS), modified starch-chitosan (MS-CH) and modified starch-maltodextrin-chitosan (MS-MD-CH) were used as agents for beetroot and saffron coloring-extracts microencapsulation by freeze drying. The produced powders were evaluated in terms of coloring strength (E) during storage at 40°C for 10 weeks and a first-order kinetic was applied. Color parameters (L(), a(), b(), C() and ΔE()) and water sorption behavior was also studied. Moreover, incorporation of the powders in a chewing gum model system was conducted. The type of encapsulating agent significantly (P<0.05) affected the studied parameters with the order of protection in both extracts being as follows: MD>GA>GA-MS>MS-CH>MS-MD-CH. The water sorption study revealed that MD and GA kept their structural integrity up to water activities of 0.66 and 0.82, respectively. The chewing gum samples produced with coloring extracts encapsulated in GA-MS showed the greatest a()(for beetroot) and b(*) (for saffron) values indicating a better protection.
麦芽糊精（MD-21DE）、阿拉伯胶（GA）、阿拉伯胶改性淀粉（GA-MS）、改性淀粉壳聚糖（MS-CH）和改性淀粉麦芽糊精壳聚糖（MS-MD-CH）被用作通过冷冻干燥微囊化甜菜根和藏红花着色提取物的试剂。在 40°C 下储存 10 周期间，对所生产的粉末进行了着色强度（E）的评估，并应用了一级动力学。还研究了颜色参数（L()、a()、b()、C()和ΔE()）和水分吸附行为。此外，还进行了将粉末掺入口香糖模型系统中的实验。包埋剂的类型显著（P<0.05）影响了两种提取物的研究参数，其保护顺序如下：MD>GA>GA-MS>MS-CH>MS-MD-CH。水分吸附研究表明，MD 和 GA 分别在水活度为 0.66 和 0.82 时保持其结构完整性。用 GA-MS 包封的着色提取物制成的口香糖样品表现出最大的 a()（用于甜菜根）和 b(*)（用于藏红花）值，表明保护效果更好。
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