Abstract: Method is proposed useful to render harmless mycotoxins that contaminate food, animal feed and assist infection of plant hosts by microbial parasites, comprising binding mycotoxins by a novel adsorbent, consisting partially or in full of plant lignocellulosic biomass or isolated biomass components, e.g., acid hydrolysis lignin, enzymatic hydrolysis lignin, coniferous and deciduous wood, bark and needle particles, rice hulls, used coffee grounds, apricot stone shells, almond, walnut, sunflower hulls, cocoa and peanut shells. The materials may be further improved through genetic modification of plants and physicochemical treatment of lignocellulosic biomass, such as micronization. The resulting adsorbent can bind wide range of mycotoxins, including, mycotoxins difficult to bind (Ochratoxin, T-2, Deoxynivalenol, Nivalenol).