Haryoto; Nurcholis, W.; Liwanda, N.; Kartiman, R.; Aisyah, S. I. Optimizing Polyphenol Content and Extraction Methods for Antioxidant Constituents from <i>Portulaca oleracea</I>: Comparing Reflux and Maceration Methods With Various Solvents. JNR 2024, 24, 1855-1862.