A method for extracting compounds with high antioxidant activity from lotus leaves.

Abstract

OCR 10KL (19 / 12 / 2568) This invention relates to a process for extracting substances with high antioxidant activity from lotus leaves. Start by preparing fresh lotus leaves (Sattabongkot variety), cutting them into pieces, and then drying them in a hot air oven. (oven) Then, dried lotus leaves of the Sattabongkot variety were boiled with distilled water, the solution was filtered, and the resulting extract was evaporated. Dry the extract using a spray dryer, using the highest temperature used to introduce the extract into the machine. The extract will be in the form of a brown or dark brown powder.

Claims

1. The process for extracting substances with high antioxidant activity from lotus leaves consists of the following steps: A. Take fresh lotus leaves of the Nelumbo nucifera Gaertn. species and clean them. Clean with clean water and air dry for 1-5 hours. Then cut into pieces measuring 3-10 centimeters. Bake in a hot air oven at 50-60 degrees Celsius for 12-24 hours. B. Take 5-10 kilograms of dried lotus leaves (Sattabongkot variety) and boil them with distilled water (volume...). 100 - 500 liters at a temperature of 50 - 100 degrees Celsius for 1 - 5 hours. Filter the solution to obtain... 100 - 500 kg of extract at a concentration of 1 - 5 Brix. C. Concentrate the lotus leaf extract of the *Sattabongkot* variety obtained from step B. The concentration is further increased using a rotary evaporator at a temperature of 60-70 degrees Celsius. The process takes 1-5 hours until 50-100 kilograms of extract are obtained, with a concentration of 5-12 Brix. d. The obtained extract was then dried using a spray dryer. The maximum temperature for introducing the extract into the machine is 140-160 degrees Celsius, and the maximum temperature during extraction is... The extract is released at a temperature of 80-100 degrees Celsius, with a spray speed of 10,000-12,000. At revolutions per minute and a solution discharge rate of 0-0.5 bar, an extract will be obtained in the form of a brown powder. Or dark brown.