Introduction
Pleurotussajor-caju is the same family of Pleurotus ostreatus . The mushroom is not toxin can be eaten . It is born on a dead tree, softwood and have nature of Pleurotussajor-caju will resameble Pleurotus abalonus, Pleurotus ostreatus but the Pleurotussajor-caju is flowers tnicken and gray than types of mushroom So, making it popular is cultivation because of the good price and need of the market . Currently, there are many supplementary can increase productive with mushrooms in this experiment get taken chitosan is used . because of chitosan consist have glucosamine and nitrogen . Mushroom use nitrogen in protein synthesis and glucosamine which applies to grow mushroom. Chitosan make a strong cell wall of mushroom and biological can degradable in nature . so, it is safe when applied to humans.
So, in the experiment it were studied on the effect of chitosan on yield of Pleurotussajor-caju when use as a dietary supplement added cultural media.