**7.4 Detergents**

Nowadays liquid laundry detergent containing anionic or nonionic surfactant, citric acid or a water-soluble salt, protease, cellulose and a mixture of propanediol and boric acid or its derivatives are employed to improve the stability of cellulases [61]. Cellulases are added to detergents for the breakdown of hydrogen bonding under harsh environmental conditions such as alkaline or thermophilic conditions [139]. Cellulases are mixed with detergents to enhance brightness and hand feel, dirt removal from cotton and cotton blended garments because they are capable of modifying the structure of cellulose fibrils [62].
