| http://www.w3.org/ns/prov#value | - Natural sheath materials are, for example, gum arabic, agar agar, agarose, maltodextrins, alginic acid and its salts, e.g. sodium alginate or calcium alginate, fats and fatty acids, cetyl alcohol, collagen, chitosan, lecithins, gelatin, albumin, shellac, polysaccharides, such as starch or dextran, sucrose and waxes.
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