1, high-temperature burning bacteria: When the temperature within the culture material for more than 45 °C for a long time, it will make the mycelium shrink and die. 2, drug effects: straw mushroom is very sensitive to pesticides, after sowing, mushroom farmers in order to prevent insecticide sprayed pesticides, resulting in hyphae due to injury and shrinking. 3, anoxic suffocation: culture material water content is too high (more than 70%), or plastic film covered too strict, so that straw mushroom mycelium atrophy due to lack of oxygen. 4. Ammonia Hazard: The urea in the culture material is added excessively, or the content of the chemical fertilizer in the field is high, and the ammonia gas that is volatilized cannot be distributed, that is, the damage to the mushroom mycelium is caused. 5, strains poor: bacterial strains of bacteria are too short or too long, growth weakened, poor resistance, in the case of environmental conditions is not appropriate shrinking. 6, temperature difference is too large: mushroom mycelium is more sensitive to temperature differences. If the temperature is above 32°C during the day and below 28°C during the night, after the water is sprayed, hyphae will shrink. 7. Pests occur: Pests occur in the culture material, and the hyphae atrophy due to pests' bite hazards. Genipin powder is an aglycone derived from an iridoid glycoside called Geniposide present in fruit of Gardenia jasminoides Ellis. Genipin is an excellent natural cross-linker for protein, collagen, gelatin, and chitosan cross-linking. It has much less toxic than glutaraldehyde and many other commonly used synthetic cross -linking regents. It is also used for pharmaceutical purposes, such as choleretic action for liver diseases control. Genipin Powder,Genipin Tattoo Powder,Tattoo Genipin 98%,Natural Genipin Powder XI'AN PLANT BIO-ENGINEERING CO.,LTD , https://www.plantbic.com