Milk coagulation is traditionally accomplished by coagulating enzymes extracted from sources such as rennet. Curd is a dairy product obtained by coagulating milk in a process called curdling. The only permitted additives are natural rennet or another approved coagulating enzyme and salt. Silken tofu is produced by coagulating soy milk without cutting the curd. Streblus Asper contains protease which has a potential as a milk coagulating enzyme. The coagulating milk is placed whole into moulds with holes to drain the whey. There are no ampullae, seminal vesicles or coagulating glands. He found that after extrusion the cellulose could be regenerated in a coagulating bath. This allows the proteins to finish coagulating, strengthening the meringue evenly throughout. CO lasers are both efficient at cutting and coagulating. Very small particle size causes attraction, which in turn destabilises the suspension by coagulating. Actinidain is commercially useful as a meat tenderiser and in coagulating milk for dairy products. Wet spinning (rayon) uses a coagulating medium.