**4. Application of lignin**

Target application is the only thing which defines which lignin molecule (of which particular characteristics) is required. As a general rule, we can state that low-quality lignin is used for the production of lignin-based polymers or plastics, whereas high-quality lignin is used for their transformation to value-added products of biomedical applications [18–20]. Lignin is used as food packaging material because of its antioxidant properties due to aromatic ring with hydroxyl and methoxy groups
