TH22443Y - Method for extracting total phenolic compounds from lotus leaves. - Google Patents

Abstract

------01/12/2564------(OCR) The process for extracting phenolic compounds from lotus leaves begins with preparing the lotus leaves. They are sun-dried until completely dry, then dried in a hot air oven. Next, the lotus leaves are ground, and extraction is performed by boiling with clean or distilled water and filtering through cheesecloth. This yields a lotus leaf extract with a concentration of 4% Brix. The extract is then spray-dried using a dryer, resulting in a brown or dark brown powder. ------------ The process for extracting total phenolic compounds from lotus leaves begins with preparing the lotus leaves. They are sun-dried until completely dry, then dried in a hot air oven. Next, the lotus leaves are ground, and extraction is performed by boiling with clean or distilled water and filtering through cheesecloth. This yields a lotus leaf extract with a concentration of 4% Brix. The extract is then spray-dried using a dryer. The extract will be in the form of a brown or dark brown powder.

Claims (2)

------01/12/2564------(OCR) 1. Method for extracting phenolic compounds from lotus leaves, consisting of the following steps: a. Preparation of lotus leaves: Fresh lotus leaves are washed with clean water and sun-dried for 1-2 days, or until completely dry. They are then cut into small pieces and dried in a hot air oven at 40-60°C for 12-24 hours. The dried lotus leaves are then coarsely ground into pieces of 0.5-1 cm size. b. Extraction of phenolic compounds from lotus leaves: The lotus leaves are extracted using a 1:10 ratio of water or distilled water by boiling at 70-80°C for 2 hours. The mixture is then filtered through cheesecloth to obtain a lotus leaf extract with a concentration of 4% Brix. c. Spray drying: The obtained lotus leaf extract is then spray-dried. Using a spray dryer with an inlet hot air temperature of 130-150°C and an outlet temperature of 70-90°C, an atomizer speed of 9,000-11,000 rpm, and a feed rate of 0.2-1 bar, an extract will be obtained in the form of a brown or dark brown powder. 1. The process of extracting total phenolic compounds from lotus leaves consists of three steps: 1.1 Preparation of lotus leaves: Fresh lotus leaves are washed with clean water and then sun-dried for 1-2 days, or until completely dry. They are then cut into small pieces and baked in a hot air oven at 40-60 degrees Celsius for 12-24 hours. The dried lotus leaves are then coarsely ground into pieces of 0.5-1 centimeter in size. 1.2 Extraction of total phenolic compounds from lotus leaves: The lotus leaves are extracted using a 1:10 ratio with water or distilled water by boiling at 70-80 degrees Celsius for 2 hours. The mixture is then filtered through cheesecloth to obtain a lotus leaf extract with a concentration of 4% Brix. 1.3 Spray drying: The resulting lotus leaf extract is then spray-dried. Using a spray dryer with an inlet hot air temperature of 130-150°C and an outlet temperature of 70-90°C, an atomizer speed of 9,000-11,000 rpm, and a feed rate of 0.2-1 bar, an extract is obtained in the form of a brown or dark brown powder. 2. The method for extracting total phenolic compounds from lotus leaves, as per claim 1, can be used as an ingredient in cosmetic products, dietary supplements, and various types of beverages.