Preliminary Identification and Quantification of Quercetin Concentration and Its Comparison in Psidium Guajava L. (Guava) Fruit Ethanol Extract 50% and 70%

Abstract

In 80 % of developing countries as stated by official fact sheets and report a large proportion of the society still relies on traditional practitioners and their armamentarium of medicinal plants in order to meet health care needs. The study on Psidium Guajava L. fruit ethanol extract from Dukuhwaluh village, Purwokerto, Central Java, Indonesia showed its potential in increasing the number of megakaryocytes, followed by the rise of thrombocyte values. The study's objective was to compare the quantity of the quercetin content in 50% and 70% ethanol. This study was of experimental design and began by determining the effective concentration of two groups of guava fruits ethanol extract. The percentage of quercetin content dissolved within 50% ethanol was 54.7344 mg/kg, and 70% ethanol was 28.8420 mg/kg respectively. Quercetin content of Psidium Guajava L. fruit ethanol extract fruits in 50% hydroethanolic was higher than that of 70% hydroethanolic extract. Key words: Psidium Guajava L., Quercetin, Ethanol extract