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<p>starches can improve mechanical properties, permeability to gas, and water resistance due to being less hydrophilic than starch.</p>

<p><big> Protein-based plastics </big></p>
<p>Bioplastics can be made from proteins from different sources. For example, wheat gluten and casein show promising properties as a raw material for different biodegradable polymers.</p>

<p>Additionally, soy protein is being considered as another source of bioplastic. Soy proteins have been used in plastic production for over one hundred years. For example, body panels of an</p><p>
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