Fazle Rabbi Shakil Ahmed - Department of Pharmacy, Khwaja Yunus Ali University, Enayetpur, Chouhali, Sirajganj-۶۷۵۱, Bangladesh
Mst. Jesmin Sultana - Department of Materials Science and Engineering, University of Rajshahi, Rajshahi-۶۲۰۵, Bangladesh
Afroza Sultana - Department of Pharmacy, Khwaja Yunus Ali University, Enayetpur, Chouhali, Sirajganj-۶۷۵۱, Bangladesh
Md. Ferdous Alom - Department of Pharmacy, Khwaja Yunus Ali University, Enayetpur, Chouhali, Sirajganj-۶۷۵۱, Bangladesh

The purpose of this study was to measure the total phenol and flavonoid content and assess the antioxidant and anti-thrombocyte activity in ethanol extracts of Cassia fistula seeds. Aluminum chloride was used to calculate the amount of flavonoids, and Folin-Ciocalteu reagent was used to calculate the total amount of phenolic compounds using a spectrophotometric method. The in vitro antioxidant activity of the analyzed extracts was evaluated utilizing the DPPH approach. The total phenolics and flavonoid contents in the seeds extract Cassia fistula ۲۴۶ ± ۰.۰۸ mg GAE/g dw and ۱۱۸ ± ۰.۰۰۱ mg QE/g dw, respectively. The obtained results concluded that it may be considered a good amount of phenolic and flavonoid compounds. The in vitro anti-inflammatory properties showed the highest percentage inhibition of protein denaturation was ۵۴% for ۴۵ µg/ml and ۷۰% for the reference drug diclofenac sodium at a similar dose. The minimum inhibition of hemolysis ۵۸% was observed at ۵۰ µg/mL of Cassia fistula seeds extract and ۸۱% for the same dose of standard aspirin. The results presented that the ethanol seeds extract of Cassia fistula has potential anti-thrombocyte activity. IC۵۰ values were used to express the antioxidant activity of the investigated extracts. The IC۵۰ values was found to be ۸.۹۰ µg/ml for ethanol seeds extract which is comparable to that of ascorbic acid (IC۵۰ = ۶.۷۳ µg/ml) a well-known standard antioxidant. Among these results, the lower the IC۵۰ showed the higher the free radical scavenging activity. Among these findings, the stronger the free radical scavenging activity was seen the lower the IC۵۰ indicated. Based on all of the findings, we concluded that the anti-thrombocyte antioxidant and anti-inflammatory activities may be caused by phytochemicals identified in C. fistula extract.

Cassia fistula Phytochemicals Anti, thrombocyte Antioxidant Anti, Inflammatory