The present invention is directed to a process to provide soy base (5, 11) from soybeans (1) comprising the following steps: a. Providing an aqueous slurry comprising ground soybeans (3)； b. Separating (4) the slurry (3) provided at step 'a' into a first fraction (6) rich in insoluble soybean parts and a liquid second fraction (5) poor in insoluble soybean parts, using a suitable separation means； c. Adjusting the water content (7) of the first fraction (6) to provide from 1 to 20 wt. % of total solids (8)； d. Subjecting the first fraction (8), with from 1 to 20 wt.% of total solids to ultrasonic treatment (9), wherein the ultrasonic treatment is applied at a frequency of from 16 to 100 kHz, with an average energy input of at least 5 Joules per milliliter of said first fraction (8)； e. Separating (10) the ultrasonic treated first fraction (8) into a third fraction (12) rich in insoluble soybean parts and a liquid fourth fraction (11) poor in insoluble soybean parts, using a suitable separation means； wherein the soy base is provided as the liquid second (5) and liquid fourth fraction (11). It was found that the process according to the invention results in a more efficient process to provide soy base and extract one or more water-soluble and/or water-dispersible compounds from soybeans, such as proteins, carbohydrates (such as sugars, oligosaccharides and soluble dietary fibers), oils, vitamins, minerals, carotenoids, and isoflavones.La présente invention concerne un procédé pour fournir une base de soja (5, 11) à partir de soja (1) comprenant les étapes suivantes : a. Fourniture d'une bouillie aqueuse comprenant du soja moulu (3) ； b. Séparation (4) de la bouillie (3) réalisée à l'étape « a » en une première fraction (6) riche en parties insolubles de soja et une deuxième fraction liquide (5) pauvre en parties insolubles de soja, à l'aide d'un moyen de séparation approprié ； c. Ajustement de la teneur en eau (7) de la première fraction (6) pour fournir de 1 à 20 %
