biovittoria - purelo - luo han guo fruit juice concentrate - mogroside. purelo®, the company's proprietary luo han guo fruit concentrate, has been affirmed as a gras (generally regarded as safe) food ingredient under fda guidelines. purelo® luo han guo fruit juice concentrate is a natural, very sweet (300 times sweeter than cane sugar), non caloric, powdered concentrate from luo han guo fruit. the active components are triterpene glucosides called mogroside. mogroside are clarified from luo han guo fruit using a patented process involving hot water, a resin column, and spray-drying. the mogroside are clarified using this process, yield a fine powder that has greater than 80% total glucoside content with a mogroside v (the sweetest of the mogrosides) greater than 30%.