Kamkayan P, Assatarakul K. Effect of single-factor by ultrasound-assisted extraction on antioxidant properties of extract from jiaogulan (Gynostemma pentaphyllum) leaves. JFTSU [Internet]. 2021 Jun. 5 [cited 2024 Apr. 19];16(2):95-108. Available from: https://li01.tci-thaijo.org/index.php/JFTSU/article/view/248386