Abstract
The role of carotenoids in human nutrition has gained increased interest, especially due to their associated health-beneficial effects for a number of chronic diseases, including certain types of cancer and cardiovascular disease. Whereas data is available on the intake and presence of carotenoids in foods, limited information exists on factors influencing their bioavailability, especially for the non-provitamin A carotenoids. However, carotenoid absorption strongly depends on a number of factors which are not entirely understood. These include mainly the release of carotenoids from the food matrix, their incorporation into mixed bile micelles, the transfer of carotenoids from micelles to the mucosa for passive or facilitated absorption (via SR-BI proteins), and the sequestration into chylomicrons. Thus, dietary compounds influencing carotenoid micelle incorporation, e.g. the amount fat present in an ingested meal or components competing for uptake, such as phytosterols and other carotenoids, can have a considerable impact on carotenoid bioavailability. However, the effect of many dietary factors, including dietary fiber, type of fat, or minerals on carotenoid absorption is not well understood. In addition, bioavailability also depends on the carotenoid structure; in general, polar carotenoids are preferably incorporated into mixed micelles and tend to be of higher bioavailability, as may be the case for free vs. esterified xanthophylls, and cis-isomers vs. their trans-form, due to apparent shorter chain-lengths. Whereas their importance as part of a healthy diet warrants an improved understanding of carotenoids, their dietary fate following ingestion, including their stability, efficiency of micelle-incorporation, and pathway of absorption are still marginally understood.
Keywords: Non-provitamin A carotenoids, bioavailability, absorption, micellarization, cis-isomers, diet
Call for Papers in Thematic Issues
Functional Foods in Human Health and Beyond
Foods are important source of nutrients including carbohydrates, proteins, lipids and other minerals. Furthermore, the functional foods are those agents that have additional components that are essential supports to the body in terms of antioxidant and pharmacologically active agents. The predominant functional foods are of plant in origin, whereas some ...read more
Harnessing Bioactive Compounds from Food Waste: Sustainable Extraction Strategies and Health Applications
Food waste presents a significant challenge across the postharvest cycle, from agricultural production to distribution. However, within this waste lies a treasure trove of bioactive chemicals that hold immense potential for nutraceuticals, functional foods, and postharvest additives, including antimicrobials. Various extraction methods, such as solvent extraction (SE), supercritical fluid extraction ...read more
Natural Bioactive Compounds Derivatives in Nutraceutical and Food Science
In the last years, plants have been widely used for their numerous properties and now there is growing interest in the study of classes of compounds obtained from plant species or derived from them. The importance of these natural compounds lies in their important therapeutic purposes, and in their capability ...read more
Related Books
Functional Foods for Health Maintenance: Understanding their Role in Cancer Prevention
Green Extraction Techniques in Food Analysis
Algal Functional Foods and Nutraceuticals: Benefits, Opportunities, and Challenges
Micronutrients: The Key to Good Health
Capillary Electrophoresis in Food Analysis
Nutritional Biochemistry: From the Classroom to the Research Bench
Hypersensitivity to Vitamins
Foods for Special Dietary Regimens
9