a Departament of Food Science , Federal University of Lavras , Lavras , Minas Gerais , Brazil.
b Faculty of Agrarian Science , Federal University of Amazonas , Manaus , Amazonas , Brazil.
J Microencapsul. 2017 Sep;34(6):535-544. doi: 10.1080/02652048.2017.1366563. Epub 2017 Aug 24.
The aim of this work was to study the use of different prebiotic biopolymers in lime essential oil microencapsulation. Whey protein isolate, inulin and oligofructose biopolymers were used. The addition of prebiotic biopolymers reduced emulsion viscosity, although it produced larger droplet sizes (0.31-0.32 µm). Moisture values (2.94-3.13 g/100 g dry solids) and water activity (0.152-0.185) were satisfactory, being within the appropriate range for powdered food quality. Total oil content, limonene retention values and antioxidant activity of the microparticles containing essential oil decreased in the presence of the carbohydrates. The addition of prebiotic biopolymers reduced the microparticle thermal stability. X-ray diffraction confirmed the amorphous characteristic of the microparticles and the interaction of the essential oil with the wall material. The presence of prebiotic biopolymers can be a good alternative for lime essential oil microparticles, mainly using fibre that has a functional food appeal and can improve consumer health.
本工作旨在研究不同的益生元生物聚合物在香精油微胶囊化中的应用。使用了乳清蛋白分离物、菊粉和低聚果糖生物聚合物。虽然添加了益生元生物聚合物会导致乳液的黏度降低，但会产生更大的液滴尺寸（0.31-0.32μm）。水分值（2.94-3.13g/100g 干固物）和水分活度（0.152-0.185）均令人满意，处于粉末状食品质量的适宜范围内。含有精油的微颗粒的总油含量、柠檬烯保留值和抗氧化活性在碳水化合物存在的情况下会降低。添加益生元生物聚合物会降低微颗粒的热稳定性。X 射线衍射证实了微颗粒的非晶特性以及精油与壁材的相互作用。益生元生物聚合物的存在可能是香精油微颗粒的一个很好的替代品，特别是使用具有功能性食品吸引力的纤维，可以改善消费者的健康。
