Harahap IT, Daulay AS, Rahman F, Nasution HM. Determination of total phenolic content of bajakah wood (Spatholobus littolaris Hassk.) extract based on differences in ethanol concentration using Uv-Vis spectrophotometry method. JPS [Internet]. 2023 Nov. 15 [cited 2025 Mar. 10];6(4):1717-28. Available from: https://journal-jps.com/new/index.php/jps/article/view/302