does alkali pretreatment leads to increase in hemicellulose content of a lignocellulosic biomass ??
To the best of my knowledge, it will not increase the hemicellulose content.
As it stands your question does not make any sense. Please explain what it is you are trying to achieve and what are the samples you are working with.
An alkali extraction will tend to solubilise the hemicelluloses which can then be removed by centrifugation from the insoluble pellet.
it decrease the amout of hemicellulose
Alkali soln. causes swelling of biomass which leads to breakdown of lignin, hydroxide ion of alkali attacks on carbon ester bond which are present between lignin and cellulose and hemicellulose....no increase in hemicellulose content
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