Optimization of ultrasound-assisted enzymatic extraction and antioxidant activity of polysaccharide from radix Morindae officinalis by response surface methodology. Pharmacognosy Magazine. 2020;16(71):662-669..
Central composite design
Optimization of quercitrin and total flavonoids extraction from Herba Polygoni Capitati by response surface methodology. Pharmacognosy Magazine [Internet]. 2014;10(37s):s57-s64. https://www.ncbi.nlm.nih.gov/pubmed/24914309.