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Chitosan and its use as a pharmaceutical excipient. <i>Pharm. Res.<\/i>, <b>15<\/b>, 1326\u20131331 (1998).","DOI":"10.1023\/A:1011929016601"},{"key":"2","doi-asserted-by":"crossref","unstructured":"2) Anraku M, Gebicki JM, Iohara D, Tomida H, Uekama K, Maruyama T, Hirayama F, Otagiri M. Antioxidant activities of chitosans and its derivatives in <i>in vitro<\/i> and <i>in vivo<\/i> studies. <i>Carbohydr. Polym.<\/i>, <b>199<\/b>, 141\u2013149 (2018).","DOI":"10.1016\/j.carbpol.2018.07.016"},{"key":"3","doi-asserted-by":"crossref","unstructured":"3) Ifuku S, Saimoto H, Azuma K, Osaki T, Minami S. Preparation of chitin nanofibers for biomedical application. <i>Chitin Chitosan Deriv.<\/i>, 169\u2013179 (2014).","DOI":"10.5772\/57095"},{"key":"4","doi-asserted-by":"crossref","unstructured":"4) Jayakumar R, Prabaharan M, Sudheesh Kumar PT, Nair SV, Tamura H. Biomaterials based on chitin and chitosan in wound dressing applications. <i>Biotechnol. 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