Yeasts are widely distributed in nature and are a type of Ascomycetes without filamentous mycelium structure. They can contaminate the culture medium and culture materials during the production and cultivation of edible mushroom strains, resulting in deterioration of the culture materials and inhibiting the growth of mycelium. Symptoms Yeast contamination starts from the middle of the culture medium, causing the culture material or mushroom bed culture material in the strain bag to be fermented and deteriorated, and the odor of wine acid is scattered, which affects the growth and development of the mycelia. Pathogen This pathogen belongs to Ascomycete subphylum fungi, and the colonies that grow on the potato sucrose agar medium are paste-like or gelatinous, and the colors are milky white, pink, milky yellow. Some have stickiness, some have neat edges, some have smooth surfaces, and some have surface wrinkles. The spores were observed under a microscope. The spores were colorless, single-celled, and resembled the mother cell morphology. Onset characteristics Yeasts live on organic matter. Yeast spores are transmitted along with the air flow. Due to incomplete disinfection and sterilization during the production of strains or raw material cultivation, the contents of the bottle bag are relatively large and the materials are tightly packed, and the bottles are discharged closely. , prone to the bacteria. High temperature and high humidity are conducive to the germination and reproduction of yeasts. Excessive bed material and high water content in culture materials can cause the fermentation material to deteriorate. Control methods (1) In the production of strains, the culture materials should not be loaded too tightly, use appropriate amount of strains. When sterilizing, the proper distance between bottle bags is conducive to neat evacuation. The original species and cultivars should not use atmospheric pressure intermittent sterilization method. Atmospheric pressure sterilization must maintain at least 100 °C for 8 hours. (2) Perform sterile operations during inoculation and strictly observe the inoculation protocol. (3) 0.2% of 25% carbendazim or 0.1% thiophanate-methyl spices are used in the cultivation process. Maintain proper water content and temperature of the culture material. Spray with clean water to reduce the incidence of germs. (4) In the cultivation and production, it was found that the temperature of the culture material was too high, and the sour taste was emitted. The culture material was timely watered with lime water (pH=13-14) to control yeast reproduction.
ORIENTMED has many branched. Band Aid is also our main products. Band Aid is a kind of wound healing pads that made of non woven, PE, fabric material. It is used for minor cuts, scrapes abrasions, and puncture wounds .It's gentle and comfortable, can be used in hospitals or for personal care. Our products have get the CE, ISO and FDA. 70% of our clients need get this kind of products registration. So we have an experience experience on products registration on our clients'Ministry of Health.
If you are intrested in our Menthol Product Series, welcome to send us your inquiry and requirments.
For health! Professional service, we would do better.
Band Aid
Band Aid,Fabric Band Aid,Waterproof Band Aid,Blister Band Aids
Hebei Orient Imp. & Exp. Co. Ltd. , https://www.orientmedcare.com