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Li J, Wu C, Li F, Yu R, Wu X, Shen L, Liu Y, Zeng W. Optimization of ultrasound-assisted water extraction of flavonoids from Psidium guajava leaves by response surface analysis. Preparative Biochemistry and Biotechnology. 2019 Jan 02;49(1):21–9. doi: 10.1080/10826068.2018.1466158. |