Definition of raffinose in US English:



  • A sugar present in sugar beet, cotton seed, and many grains. It is a trisaccharide containing glucose, galactose, and fructose units.

    • ‘Cells were released from the arrest by filtration and resuspended in fresh media with raffinose and galactose.’
    • ‘Another digestive enzyme, alpha-galactosidase, may reduce the gas caused by beans and other carbohydrates containing the sugar raffinose.’
    • ‘In addition, sugars such as raffinose and sucrose are indicated to have important roles in protecting cells from water stress.’
    • ‘Maximal survival was obtained after drying protoplasts with a mixture of sucrose and raffinose, while pure sucrose and trehalose were somewhat less effective protectants.’
    • ‘A standard mixture of glucose, fructose, sucrose, and raffinose was prepared from stock solutions and used for calibration and as an external standard for determining elution volumes.’


Late 19th century: from French raffiner ‘refine’ + -ose.