FÖRFARANDE FÖR FRAMSTÄLLNING AV MIKROKRISTALLIN OCH NANOKRISTALLIN CELLULOSA

摘要

The invention relates to a process for preparing micro-and nanocrystalline cellulose in the presence of an acid. More specifically, the invention relates to a process in which cellulose material is hydrolyzed in the presence of an acid in the gas phase while the moisture content is between 1% and 80%, mono-and oligosaccharides are optionally separated from the hydrolyzed cellulose and the hydrolyzed cellulose is mechanically treated. The invention also relates to a cellulose product prepared by the said process and the use thereof in food and liquid crystal applications as well as in optical, cosmetic and pharmaceutical applications.