β-Carotene (CAS 7235-40-7)

β-Carotene, a naturally occurring carotenoid, is abundantly present in plants, algae, and certain bacteria. It plays a significant role in the production of cosmetics, pharmaceuticals, and various food products. The remarkable properties of β-Carotene encompass a range of biological activities, including antioxidant, anti-inflammatory, and anti-cancer effects. Its mechanisms of action are diverse and multifaceted. As an antioxidant, β-Carotene exhibits the ability to scavenge free radicals and inhibit the formation of reactive oxygen species. It also serves as an effective anti-inflammatory agent by impeding the production of pro-inflammatory cytokines. In the context of cancer, β-Carotene has demonstrated the capacity to hinder cancer cell growth through the induction of apoptosis and inhibition of angiogenesis. While β-Carotene can be classified as an antioxidant due to its inhibition of radical-initiated peroxidation in vitro, its precise behavior as an antioxidant or prooxidant depends on the specific cellular environment. Notably, β-Carotene has shown a reduction in the incidence of many cancers, except for lung cancer, where it appears to enhance the incidence.