Arumugham Thanigaivelan, Krishnamoorthy Rambabu, AlYammahi Jawaher, Hasan Shadi W, Banat Fawzi
Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates; Center for Membranes and Advanced Water Technology (CMAT), Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
Int J Biol Macromol. 2023 May 31;238:124340. doi: 10.1016/j.ijbiomac.2023.124340. Epub 2023 Apr 5.
Bioactive compounds can be protected from degradation through encapsulation, increasing their bioavailability and shelf life. Spray drying is an advanced encapsulation technique mainly used for the processing of food-based bioactives. In this study, Box-Behnken design (BBD)-based response surface methodology (RSM) was used to study the effects of combined polysaccharide carrier agents and other spray drying parameters on encapsulating date fruit sugars obtained from a supercritical assisted aqueous extraction. The spray drying parameters were set at various levels: Air inlet temperature (150-170 °C), feed flow rate (3-5 mL/min), and carrier agent concentration (30-50 %). Under the optimized conditions (inlet temperature of 170 °C, the feed flow rate of 3 mL/min, and carrier agent concentration of 44 %), a maximum sugar powder yield of 38.62 % with 3.5 % moisture, 18.2 % hygroscopicity and 91.3 % solubility was obtained. The tapped density and particle density of the dried date sugar were estimated as 0.575 g cm and 1.81 g cm, respectively, showing its potential for easy storage. In addition, scanning electron microscope (SEM) and X-ray diffraction (XRD) analysis revealed better microstructural stability of the fruit sugar product, which is essential for commercial applications. Thus, the hybrid carrier agent system (maltodextrin and gum arabic) can be considered a potential carrier agent for producing stable date sugar powder with longer shelf-life and desirable characteristics in the food industry.
生物活性化合物可通过包封来防止降解，从而提高其生物利用度和保质期。喷雾干燥是一种先进的包封技术，主要用于加工基于食品的生物活性物质。在本研究中，基于Box-Behnken设计（BBD）的响应面方法（RSM）被用于研究复合多糖载体剂和其他喷雾干燥参数对包封通过超临界辅助水提取获得的枣果糖分的影响。喷雾干燥参数设置为不同水平：进气温度（150 - 170°C）、进料流速（3 - 5 mL/min）和载体剂浓度（30 - 50%）。在优化条件下（进气温度170°C、进料流速3 mL/min、载体剂浓度44%），获得了最大糖粉产率38.62%，水分含量3.5%，吸湿性18.2%，溶解度91.3%。干燥枣糖的振实密度和颗粒密度分别估计为0.575 g/cm和1.81 g/cm，表明其易于储存的潜力。此外，扫描电子显微镜（SEM）和X射线衍射（XRD）分析显示果糖类产品具有更好的微观结构稳定性，这对于商业应用至关重要。因此，混合载体剂系统（麦芽糊精和阿拉伯胶）可被认为是在食品工业中生产具有更长保质期和理想特性的稳定枣糖粉的潜在载体剂。
