On the 16th day, the suspension was filtered in muslin cloth to remove residue. Filtration was repeated 3 times to obtain clear filtrate. The filtrate was put into the flask of rotary evaporator (Eyela, Japan) batch wise in a volume of 500 ml keeping the bath temperature 40°C. The extract obtained (approximately 300 ml) was transferred to 500 ml beaker and subjected to further evaporation on water bath at 100°C to obtain ultimately a gel like mass weighing approximately 61 g