mannanThe polymer of mannose with a repeating unit of C6H10O5. Can be hydrolyzed to mannose. (Source: Voet, D.; Voet, J. G. Biochemistry.
mannoseA hexose component of many polysaccharides, occasionally used as a carbohydrate source in plant tissue culture media.
mashA mixture of grain and other ingredients with water to prepare wort for brewing operations.
mass closure (%)The percent by weight of the total samples extracted from the biomass sample compared to the weight of the original sample.
metabolism(meh-TA-boh-lih-zum) The total of all chemical changes that take place in a cell or an organism.
MethaneA colorless, odorless, tasteless gas composed of one molecule of Carbon and four of hydrogen, which is highly flammable.
methanol (wood alcohol)(CH3OH) An alcohol formed by catalytically combining carbon monoxide with hydrogen in a 1:2 ratio under high temperature and pressure.
microorganismAn organism that can be seen only through a microscope. Microorganisms include bacteria, protozoa, algae, and fungi.
MoistureThe amount of water and other components present in the biomass sample that are volatilized at 105°C. (Source: Ehrman, T.
moisture free basisBiomass composition and chemical analysis data is typically reported on a moisture free or dry weight basis.