The importance of marine algae as sources of functional ingredients has been well recognized due to their valuable health beneficial effects. Therefore, isolation and investigation of novel bioactive ingredients with biological activities from marine algae have attracted great attention. Among functional ingredients identified from marine algae, fucoxanthin has received particular interest. Fucoxanthin has been attributed with extraordinary potential for protecting the organism against a wide range of diseases and has considerable potential and promising applications in human health. Fucoxanthin has been reported to exhibit various beneficial biological activities such as antioxidant, anticancer, anti-inflammatory, antiobesity, and neuroprotective activities. In this chapter, the currently available scientific literatures regarding the most significant activities of fucoxanthin are summarized.
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