Peels of tucumã (Astrocaryum vulgare) and peach palm (Bactris gasipaes) are by-products classified as very high carotenoid sources

•Peels of tucumã and peach palm fruits are promising sources of carotenoids.•Peels of tucumã and peach palm fruits were classified as very high carotenoid sources.•Total carotenoids in the peel of both fruits were superior to those found in the pulp.•The carotenoid profile of tucumã and peach palm was reported for the first time.•β-carotene was the major carotenoid found in tucumã and peach palm peels. Tucumã (Astrocaryum vulgare) and peach palm (Bactris gasipaes) are Amazonian fruits with high potential to be used as source of carotenoids due to the remarkable yellow-orange colour of their pulp and peel. In this study, for the first time, both the extraction of carotenoids from the peel of tucumã and peach palm fruits and their carotenoid profile were investigated. The carotenoid contents of the peel of both fruits were higher than those found in the pulp. The highest yield of carotenoids from both fruit peels were obtained at the solid-liquid ratio of 1:7 (w/v), 80 min of shaking and by adding 30% of ethyl acetate in acetone, being β-carotene the major carotenoid (7.8 and 7.3 mg/100 g for tucumã and peach palm, respectively), followed by γ-carotene and δ-carotene. Thus, peels of tucumã and peach palm fruits were classified as very high carotenoid sources to be used by any potential interested industry.