Abstract
Carotenoids are lipophilic pigments with polyene skeletons, which possess great benefits to human health. In this study, medium-chain triglyceride (MCT) and four long-chain triglycerides (LCTs), namely, soybean oil, sunflower seed oil, palm oil, and cottonseed oil, were applied as carriers to enrich carotenoids from Lycium barbarum L. by the freeze–thaw method. The fatty acid composition, thermal properties, and rheological properties of the carotenoid-enriched oils were determined. The carotenoid retention ratio (CRR) and peroxide value (POV) of the prepared oils were assessed during 56 days of storage. Kinetic analysis was conducted for CRR; meanwhile, a multivariate quadratic regression model was implemented to explain the POV changes. Results showed that the CRR of carotenoid-enriched oils decreased gradually following first-order kinetics. The CRR of MCT with low POV generation rate was significantly (p<0.05) lower than that of LCTs. Long-chain oils were beneficial for carotenoids stability. The carotenoid-enriched cottonseed oil (CCO) performed the best at 45 °C for 56 days, given the low monounsaturated fatty acids and slow POV generation rate. Thus, oils’ chain length and fatty acid saturation would influence delivery material and delivery carrier stability, LCT with high saturation would be an ideal delivery system for carotenoids.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.