This Dataset includes several characterizations of different biomass powders. For each analysis performed on the powders, this dataset includes a table with the raw data (analysis raw), and in cases where multiple observations of the same parameter were made, there is also a calculated table (analysis calc) that includes the average and standard deviation values for the several observations. The data set also includes the requests SPARQL queries used to generate the tables from the online tools SPO2Q. Queries names and table names have the same name, only the extension differs replacing the string ‘tsv’ by ‘sparql’. By example ‘Table 2.1 monosaccharides raw.sparql’ is the name of the query associated with table ‘Table 2.1 monosaccharides raw.tsv’