Momordica grosvenori extract with special flavor and preparation method of momordica grosvenori extract

The invention discloses a siraitia grosvenorii extract with a special flavor and a preparation method of the siraitia grosvenorii extract with the special flavor. Comprising a second fraction a, a second fraction b and a second fraction c which are obtained by sequentially carrying out sephadex chromatographic column separation and C18 reverse phase silica gel chromatographic column separation on trapped fluid obtained by separating siraitia grosvenorii extract stock solution through a ceramic membrane with the pore size of 50nm and a ceramic membrane with the pore size of 10nm or permeated fluid. The method disclosed by the invention can be used for effectively removing components with poor sense organs in the momordica grosvenori extract and obtaining the momordica grosvenori extract with prominent style and special flavor. 本发明公开了一种具有特色风味的罗汉果提取物及其制备方法，其中，一种具有特色风味的罗汉果提取物的制备方法，包括：从罗汉果提取物原液中通过孔径为50nm的陶瓷膜以及孔径为10nm的陶瓷膜进分离得到的截留液或者通过透过液依次进行葡聚糖凝胶色谱柱分离、C18反相硅胶色谱柱分离获得的第二流分a、第二流分b和第二流分c。本发明方法可以有效去除罗汉果提取物中的感官不良成分，获得风格凸