| 摘要 |
The present invention provides a (preferably defatted) rice bran hydrolysate composition which comprises of more than 50 wt% (on dry matter) of (poly)peptides and which has a DH (Degree of Hydrolysis) of at least 10%, preferably between 10 and 16% and more than 90%, preferably more than 95%, of the (poly) peptides has a molecular weight (MW) of more than 500 Da. According to another aspect of the invention a process to produce a (preferably defatted) rice bran hydrolysate composition (preferably having a protein content of more than 50 wt% (on dry matter) is provided which comprises - adding an aqueous liquid, preferably water, to (preferably defatted) rice bran; - separating the liquid from the solid fraction to obtain a washed solid fraction; - adding an enzyme or enzyme composition to a suspension of the washed solid fraction which suspension has a concentration of between 5 and 30 wt%, preferably of between 12 and 30 wt%; - performing an enzyme incubation preferably at a pH between 6 and 8; - performing the enzyme incubation to an extent of hydrolysis of between a DH (Degree of Hydrolysis) of 10 and 16%; - performing the enzyme incubation at a temperature of between 30 and 80 °C preferably between 45 and 65 °C; and - optionally separating the liquid from the solid fraction; whereby the enzyme or enzyme composition comprises an endoprotease. |
