<style face="normal" font="default" size="100%">Preliminary Identification and Quantification of Quercetin Concentration and Its Comparison in Psidium Guajava L. (Guava) Fruit Ethanol Extract 50% and 70%</style>

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<style face="normal" font="default" size="100%">Preliminary Identification and Quantification of Quercetin Concentration and Its Comparison in Psidium Guajava L. (Guava) Fruit Ethanol Extract 50% and 70%</style>

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<style face="normal" font="default" size="100%">Preliminary Identification and Quantification of Four Secondary Metabolites, Total Tannin and Total Flavonoid Contents in Guava Fruit Ethanol Extract</style>