Methods for treating lignocellulosic materials

A hemicellulose sugar mixture comprising:

• monosaccharides in a ratio to total dissolved sugars >0.50 weight/weight;
• glucose in a ratio to the monosaccharides <0.25 weight/weight;
• xylose in a ratio to the monosaccharides >0.18 weight/weight;
• fructose in a ratio to the monosaccharides between 0.01 and 0.10 weight/weight;
• and
• one or more of the following:
• furfurals in an amount up to 0.01% weight/weight;
• one or more phenols in an amount up to 500 ppm;
• and
• hexanol in an amount up to 0.1% weight/weight.

A hemicellulose sugar mixture comprising:

• oligosaccharides in a ratio to total dissolved sugars >0.15 weight/weight;
• the sum of glucose and fructose in a ratio to total dissolved sugars >0.10 weight/weight;
• xylose in a ratio to total dissolved sugars <0.40 weight/weight;
• and
• one or more of the following:
• mannose in a ratio to total dissolved sugars >0.01 weight/weight;
• fructose in a ratio to total dissolved sugars <0.10 weight/weight;
• furfurals in an amount up to 0.01% weight/weight;
• phenols in an amount up to 500 ppm;
• and
• hexanol in an amount up to 0.1% weight/weight.