Use of prebiotic carbohydrate as wall material on lime essential oil microparticles

• Published in: Journal of microencapsulation Vol. 34; no. 6; pp. 535 - 544
• Main Authors: Campelo, Pedro Henrique, Figueiredo, Jayne de Abreu, Domingues, Rosana Zacarias, Fernandes, Regiane Victória de Barros, Botrel, Diego Alvarenga, Borges, Soraia Vilela
• Format: Journal Article
• Language: English
• Published: England Taylor & Francis 18-08-2017
• Subjects: antioxidant activity; Biopolymers - chemistry; Calcium Compounds - chemistry; Cyclohexenes - chemistry; degree of polymerisation; Emulsions; encapsulation efficiency; inulin; Inulin - chemistry; Oils, Volatile - chemistry; Oligosaccharides - chemistry; Oxides - chemistry; Particle Size; prebiotic; Prebiotics; Terpenes - chemistry; Ultrasound-assisted emulsification; Viscosity; inulin; Ultrasound-assisted emulsification; degree of polymerisation; encapsulation efficiency; prebiotic; antioxidant activity
• ISSN: 0265-2048; 1464-5246
• DOI: 10.1080/02652048.2017.1366563

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.