METHOD OF PRODUCTION OF LIGNIN and HEMICELLULOSE to FROM ONE OF LIGNOCELLULOSIC PLANT MATERIAL

The present relates to are one method of production of lignin and hemicellulose to from one of lignocellulosic plant material， comprising the steps that Of: (to) put in contact one lignocellulosic plant material with an solution of more of extraction during 2 hours to an temperature between 95??C and 110??C， Which are obtained by one solid fraction and one liquid fraction， (b) separate the solid fraction and the liquid fraction， (c) concentrating the liquid fraction for obtaining one fraction Concentrated liquid， (d) mixing equal parts in weight of water with the concentrated liquid fraction for obtaining one suspension comprising solid particles in suspension which is one liquid medium， (and) separate the particles and the medium of the suspension， (f) recovering the particles of the suspension， which are obtained by one fraction that Comprising lignin named ' lignified fraction "， and (g) recovering the medium of the suspension， which are obtained by one fraction comprising hemicellulose， which Named ' fraction hemicelulósica ”.