Microparticles loaded with fish oil: stability studies, food application and sensory evaluation

Author(s)

Fadini, Ana Lucia ^{[1, 2]} ; Alvim, Izabela Dutra ^[1] ; Carazzato, Camila Augusto ^[3] ; de Freitas Paganotti, Katyri Bezerra ^[3] ; Rauen de Oliveira Miguel, Ana Maria ^[4] ; Ferreira Rodrigues, Rodney Alexandre ^{[2, 5]}

Affiliation

^[1] Inst Food Technol, Cereal Chocotec, BR-13070178 Campinas - Brazil

^[2] Univ Estadual Campinas, Sch Food Engn, Dept Food & Nutr, Campinas - Brazil

^[3] Univ Sao Paulo, Sch Food Sci, ESALQ, Piracicaba - Brazil

^[4] Inst Food Technol, CCQA, Campinas - Brazil

^[5] Univ Estadual Campinas, Phytochem Div, CPQBA, Paulinia - Brazil

• Document type: Journal article
• Source: Journal of Microencapsulation; v. 38, n. 6 JUL 2021.
• Web of Science Citations: 0

Abstract

Aim Evaluate the stability of microparticles loaded with fish oil produced by spray drying, spray chilling and by the combination of these techniques (double-shell) and use the microparticles for food application. Methods Samples were stored for 180 days at 6 degrees C and 24 degrees C (75% RH). Performed investigations included encapsulation efficiency, moisture content, a(w), size (laser scattering), colour (L{*}, a{*}, b{*}), polyunsaturated fatty acids (PUFAs) (GC), thermal behaviour (DSC) and crystalline structure (XRD). Results Double-shell microparticles containing 26 wt% core material, 22.74 +/- 0.02 mu m (D-0.5) and 2.05 +/- 0.03 span index, 1.262 +/- 0.026 wt% moisture content and 0.240 +/- 0.001 of a(w) had PUFAs retention higher than 90 wt% during storage at 6 degrees C without changes in crystalline structure (beta'-type crystals) and melting temperature (54 degrees C). The sensory evaluation suggested low fish oil release in oral phase digestion. Conclusions Double-shell microparticles were effective to protect and deliver PUFAs. (AU)

• FAPESP's process: 15/12398-4 - Study of combined methods for omega-3 microencapsulation
• Grantee: Ana Lúcia Fadini
• Support Opportunities: Regular Research Grants