Total carotenoid in various leaves extracts of four varieties mangoes The total carotenoid contents among the different varieties were expressed in term of beta carotene equivalent using the standard curve equation y = 0.022x – 0.008, R2 = 0.997. The total carotenoid content in various leaves extracts of four varieties mangoes showed different result in the range of 0.20 - 16.28 g BET/100 g (Fig 5). The highest carotenoid contents (16.28 g BET/100 g) for GL1 leaves extract, while the lowest carotenoid (0.20 g BET/100 g) for AP3 leaves extract.