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Chitinous polysaccharides are also used as dietary fibers in some food products, since they have the capacity of lowering the cholesterol levels by blocking the absorption of fat and cholesterols in organism and are a glucose‐lowering agent [234,250]. In this way, these fibers facilitate the weight and fat loss and have a control over nutrition [234]. For example, there are several reports showing that the addition of fungal CGC as a fiber in food formulations has a beneficial effect in the development of obesity and diabetes and in the treatment of heart diseases [242,243,245] (Table 2.4).

Chitosan is also known to be beneficial for food preservation as a coating for food packaging, acting as an inhibitor of microbial growth [207].