
Keywords: Guava leaves; Fermentation degree; HPLC fingerprint; Phenolic compounds; Antioxidant activity; Gallic acid (Pubchem CID: 370); Rutin (Pubchem CID: 5280805); Isoquercitrin (Pubchem CID: 5280804); Quercetin-3-O-β-D-xylopyranoside (Pubchem CID: 5320861); Qu