Quantification of Vitamin C in Petai Cinai (Leucaena leucocephala) using UV-Vis Spectrophotometry. jisk [Internet]. 2023 Dec. 31 [cited 2025 Aug. 2];4(3):1-5. Available from: https://ejournal.sumateraconnect.or.id/index.php/jisk/article/view/63