You will need to measure the concentration of xylose (and maybe other hemicellulose sugars) in the liquid hydrolysate via HPLC. Then you can calculate back the percentage of xylan (and equivalent polymers for the other sugars), which add up to the hemicellulose. You can see a detail method and calculation in the NREL protocol: https://www.nrel.gov/docs/gen/fy13/42618.pdf

try this: Article Rice hull degradation by co-composting with dairy cattle slurry

Hello,

You can follo this research paper

Article Devolatilization of Biomass Fuels and Biomass Components Stu...

Hello Taposi

First determine the holocellulose then from it determine ⍺-Cellulose. Finally ⍺-Cellulose is deducted from holocellulose and you will get hemicellulose. You can follow the TAPPI method.