PROCESS OF EXTRACTING OIL FROM THIN STILLAGE

摘要

The present invention relates to processes of recovering oil after liquefaction and/or from thin stillage and/or syrup/evaporated centrate from a fermentation product production process by adding a thermostable protease to the whole stillage, thin stillage and/or syrup.

主权项

1. A process of recovering oil, comprising
(a) converting a starch-containing material into dextrins with an alpha-amylase; optionally recovering oil during and/or after step (a) (b) saccharifying the dextrins using a carbohydrate source generating enzyme to form a sugar; (c) fermenting the sugar in a fermentation medium into a fermentation product using a fermenting organism; (d) recovering the fermentation product to form a whole stillage; (e) separating the whole stillage into thin stillage and wet cake; (e′) optionally concentrating the thin stillage into syrup; (f) recovering oil from the thin stillage and/or optionally the syrup, wherein a protease having a thermostability value of more than 20% determined as Relative Activity at 80° C./70° C. is present and/or added during step (a) or steps (d)-(e′).