SYSTEMS AND METHODS FOR PRODUCING A COMPOSITION OF FIBER
Systems and methods for generating a composition of fiber and the composition of fiber from corn are provided. Raw fiber is washed with de-starched water at between about 60 and 200° F. for between approximately 5 and 20 minutes. The washed fiber is dewatered and rewashed, under similar conditions, with process water. The second wash fiber is dewatered, dried, and milled to generate processed fiber. The processed fiber may have a composition of less than about 10% moisture, at least about 85% fiber on a dry weight basis, less than about 2-4% fat on a dry weight basis, less than about 1.5% ash on a dry weight basis, less than about 9% starch on a dry weight basis, a low sulfite content, and less than about 2% starch. Additionally, the fiber may contain less than about 0.1 ppb Aflatoxin, 0.1 ppm Fumonison, 0.2 ppm Deoxynivalenol, and 75 ppb Zearalenone.
1 . A method for producing food grade fiber, comprising:
receiving dry milled raw fiber from a fractionation ethanol production facility;
washing the dry milled raw fiber with de-starched water to generate a first wash fiber, wherein the de-starched water is recovered after a second wash;
dewatering the first wash fiber;
washing the dewatered first wash fiber with process water to generate a second wash fiber;
dewatering the second wash fiber;
drying the dewatered second wash fiber; and
milling the dried second wash fiber to generate processed fiber.
2 . The method of claim 1 , wherein the washing the dry milled raw fiber is performed with the de-starched water at a temperature at about 60 to 200° F.
3 . The method of claim 2 , further comprising utilizing a heat exchanger to increase the temperature of the de-starched water.
4 . The method of claim 1 , wherein the washing the dry milled raw fiber is performed with mechanical agitation for about 5 to 20 minutes.
5 . The method of claim 1 , wherein the washing the dewatered first wash fiber is performed with the process water at a temperature at about 60 to 200° F.
6 . The method of claim 5 , further comprising utilizing a heat exchanger to increase the temperature of the process water.
7 . The method of claim 1 , wherein the washing the dewatered first wash fiber is performed with mechanical agitation for about 5 to 20 minutes.
8 . The method of claim 1 , wherein the process water is potable grade water.
9 . The method of claim 1 , further comprising:
recovering starch water from the dewatering the second wash fiber and the dewatering the first wash fiber; and
concentrating the starch in the starch water to generate a high solid starch water and the de-starched water.
10 . The method of claim 9 , further comprising supplying the high solid starch water to a fermentation system at the fractionation ethanol production facility.
11 . The method of claim 1 , wherein the dewatering the first wash fiber comprises utilizing a screw press.
12 . The method of claim 1 , wherein the dewatering the second wash fiber comprises utilizing a screw press.
13 . The method of claim 1 , wherein the drying the dewatered second wash fiber is to a moisture of less than about 10%.
14 . A composition of fiber comprising:
at least about 85% fiber on a dry weight basis;
less than about 4% fat on a dry weight basis;
less than about 1.5% ash on a dry weight basis;
less than about 9% protein on a dry weight basis; and
less than about 40 ppm sulfite.
15 . The composition of fiber of claim 14 , further comprising less than about 2% starch on a dry weight basis.
16 . The composition of fiber of claim 14 , further comprising less than about 1.5% starch on a dry weight basis.
17 . The composition of fiber of claim 14 , further comprising less than about 2% fat on a dry weight basis.
18 . The composition of fiber of claim 14 , further comprising less than about 0.1 ppb Aflatoxin.
19 . The composition of fiber of claim 14 , further comprising less than about 0.1 ppm Fumonison.
20 . The composition of fiber of claim 14 , further comprising less than about 0.2 ppm Deoxynivalenol.
21 . The composition of fiber of claim 14 , further comprising less than about 75 ppb Zearalenone.
22 . The composition of fiber of claim 14 , further comprises about 15 ppm sulfite.