Lipid Technology and Engineering, School of Food Science and Engineering , Henan University of Technology , Zhengzhou , Henan 450001 , People's Republic of China.
Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Department of Food Science and Engineering , South China University of Technology , Guangzhou , Guangdong 510640 , People's Republic of China.
J Agric Food Chem. 2019 Mar 6;67(9):2637-2646. doi: 10.1021/acs.jafc.8b04588. Epub 2019 Feb 15.
A new facile route was reported to use the natural triterpene Quillaja saponin (QS)-stabilized orange emulsions as a template for the development of flavor oil powders and oleogels achieved by the tunable oil fraction and drying mode. A fibrosis network interfacial film from self-assembly of QS at the oil-water interface possibility contributed to the fabrication of stable emulsion precursors and subsequent oil powder and oleogels by packing oil droplets in the network structure. An oil powder containing as high as 93 wt % orange oil was obtained by spray drying, showing excellent stability, flowability, and reconstitution ability. Upon the medium water removal rate of freeze drying, porous structured solid products followed by oleogels by a simple shearing can be formed. Upon oven drying, a translucent oleogel with high oil loading of 98.2 wt % was obtained from the high internal phase emulsion template. The resulting oleogels showed tunable rheological and texture properties, thixotropic recovery by modulating the oil fraction and water evaporation rate, and reversibility to reconstituted emulsions. Structuring liquid oil into solid materials by simply drying the continuous water from solely QS-based emulsions is very encouraging and provides new insights into various functional applications in the fields of foods, pharmaceuticals, cosmetics, and agriculture.
报道了一种新的简易路线，使用天然三萜皂苷 Quillaja saponin (QS)-稳定的橙色乳液作为模板，通过可调油分数和干燥模式来开发风味油粉和油凝胶。QS 在油水界面上自组装形成的纤维化网络界面膜可能有助于制备稳定的乳液前体，以及随后的油粉和油凝胶，通过将油滴包裹在网络结构中。通过喷雾干燥获得了高达 93wt%的橙油含量的油粉，表现出优异的稳定性、流动性和再构成能力。在冷冻干燥的中等水去除率下，可以通过简单的剪切形成多孔结构的固体产物，随后是油凝胶。在烘箱干燥时，从高内相乳液模板中可以获得高油负载量为 98.2wt%的半透明油凝胶。所得油凝胶表现出可调节的流变和质构特性、通过调节油分数和水蒸发率的触变恢复以及对再构成乳液的可逆性。通过简单地从仅基于 QS 的乳液中干燥连续水将液体油结构化到固体材料中非常令人鼓舞，并为食品、制药、化妆品和农业等领域的各种功能应用提供了新的见解。
