COMPOSITIONS COMPRISING C5 AND C6 MONOSACCHARIDES
Compositions comprising C5 and C6 monosaccharides and low levels of undesirable impurities, such as compounds containing sulfur, nitrogen, or metals, are disclosed.
1 . A composition, comprising:
at least one water-soluble C5 monosaccharide hydrolysate;
at least one water-soluble C5 oligosaccharide hydrolysate having a degree of polymerization of about 2 to about 15; and
impurities; wherein said impurities comprise:
less than about 1950 ppm in total by weight of elements;
wherein said elements are Al, As, B, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, P, Pb, S, Sb, Se, Si, Sn, Sr, Ti, Tl, V, and Zn.
2 . The composition of claim 1 ,
wherein said water-soluble C5 monosaccharide hydrolysate is extracted from lignocellulosic biomass.
3 . The composition of claim 2 ,
wherein said water-soluble C5 monosaccharide hydrolysate is processed from lignocellulosic biomass using supercritical, subcritical, or near critical fluid extraction, or a combination thereof.
4 . The composition of claim 1 , further comprising:
water.
5 . The composition of claim 1 ,
wherein said water-soluble C5 monosaccharide hydrolysate is present at a concentration of at least 0.5 g/L.
6 . The composition of claim 1 ,
wherein said water-soluble C5 monosaccharide hydrolysate is xylose, arabinose, lyxose, ribose, or a mixture thereof.
7 . The composition of claim 1 , further comprising:
less than about 5 ppm by weight of aluminum.
8 . The composition of claim 1 , further comprising:
less than about 300 ppm by weight of calcium.
9 . The composition of claim 1 , further comprising:
less than about 10 ppm by weight of iron.
10 . The composition of claim 1 , further comprising:
less than about 1000 ppm by weight of sulfur.
11 . The composition of claim 1 ,
wherein the weight ratio of said water-soluble C5 monosaccharide hydrolysate to said elements is greater than about 90:1.
12 . The composition of claim 1 ,
wherein the level of said elements is measured by inductively coupled plasma emission spectroscopy.
13 . The composition of claim 1 , further comprising:
less than about 350 mg of nitrogen per kg of total weight of water-soluble C5 saccharide hydrolysate.
14 . The composition of claim 1 , further comprising:
a weight ratio of the total mass of hydrogen and nitrogen to carbon of less than about 0.17.
15 . The composition of claim 1 , further comprising:
at least one water-soluble C6 saccharide having a degree of polymerization of about 1 to about 15.
16 . The composition of claim 1 ,
wherein said at least one water-soluble C5 oligosaccharide hydrolysate has a degree of polymerization of about 2 to about 6.
17 . A composition, comprising:
at least one water-soluble C5 monosaccharide hydrolysate;
at least one water-soluble C5 oligosaccharide hydrolysate having a degree of polymerization of about 2 to about 15; and
impurities; wherein said impurities comprise:
less than about 5 ppm by weight of aluminum.
18 . The composition of claim 17 , further comprising:
less than about 300 ppm by weight of calcium.
19 . The composition of claim 18 , further comprising:
less than about 10 ppm by weight of iron.
20 . The composition of claim 19 , further comprising:
less than about 1000 ppm by weight of sulfur.
21 . The composition of claim 17 , further comprising:
less than about 1950 ppm in total by weight of elements;
wherein said elements are Al, As, B, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, P, Pb, S, Sb, Se, Si, Sn, Sr, Ti, Tl, V, and Zn.
22 . The composition of claim 17 , further comprising:
at least one water-soluble C6 saccharide having a degree of polymerization of about 1 to about 15.
23 . A composition, comprising:
at least one water-soluble C5 monosaccharide hydrolysate;
at least one water-soluble C5 oligosaccharide hydrolysate having a degree of polymerization of about 2 to about 15; and
impurities; wherein said impurities comprise:
less than about 300 ppm by weight of calcium.
24 . The composition of claim 23 , further comprising:
less than about 1950 ppm in total by weight of elements;
wherein said elements are Al, As, B, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, P, Pb, S, Sb, Se, Si, Sn, Sr, Ti, Tl, V, and Zn.
25 . A composition, comprising:
at least one water-soluble C5 monosaccharide hydrolysate;
at least one water-soluble C5 oligosaccharide hydrolysate having a degree of polymerization of about 2 to about 15; and
impurities; wherein said impurities comprise:
less than about 10 ppm by weight of iron.
26 . The composition of claim 25 , further comprising:
less than about 1000 ppm by weight of sulfur.
27 . The composition of claim 25 , further comprising:
less than about 1950 ppm in total by weight of elements;
wherein said elements are Al, As, B, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, P, Pb, S, Sb, Se, Si, Sn, Sr, Ti, Tl, V, and Zn.
28 . The composition of claim 25 , further comprising:
at least one water-soluble C6 saccharide having a degree of polymerization of about 1 to about 15.
29 . A composition, comprising:
at least one water-soluble C5 monosaccharide hydrolysate;
at least one water-soluble C5 oligosaccharide hydrolysate having a degree of polymerization of about 2 to about 15; and
impurities; wherein said impurities comprise:
less than about 1000 ppm by weight of sulfur.
30 . The composition of claim 29 , further comprising:
less than about 5 ppm by weight of aluminum.
31 . The composition of claim 29 , further comprising:
less than about 1950 ppm in total by weight of elements;
wherein said elements are Al, As, B, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, P, Pb, S, Sb, Se, Si, Sn, Sr, Ti, Tl, V, and Zn.
32 . The composition of claim 29 , further comprising:
at least one water-soluble C6 saccharide having a degree of polymerization of about 1 to about 15.