Abdul-Hammed M, Bello IA, Oladoye SO. Simultaneous Spectrophotometric Determination of Lycopene and Beta-Carotene Concentrations in Carotenoid Mixtures of the Extracts from Tomatoes, Papaya and Orange Juice: Lycopene and ?-Carotene Determination. Pakistan Journal of Scientific & Industrial Research [Internet]. 2013 Aug. 29 [cited 2025 Jun. 8];56(2):90-7. Available from: http://www.biostaging.pjsir.org/index.php/biological-sciences/article/view/158