2results about How to "No irritating odor" patented technology

This invention discloses a method for preparing odor-neutralizing spray granules for sports fields, relating to the technical field of odor-neutralizing spray granules. The steps are as follows: S1 Pre-treatment of waste rubber powder and thermoplastic elastomer, drying of inorganic fillers; S2 Mixing rubber powder and elastomer in an internal mixer, adding plasticizers and activators to prepare a base rubber compound; S3 Modification by adding odor-neutralizing and formaldehyde-removing agents under negative pressure; S4 Plasticizing and extruding the rubber compound into strips using a twin-screw extruder; S5 Water cooling followed by pelletizing to obtain a coarse product; S6 Screening to remove unqualified particles, followed by hot air drying and activated carbon adsorption for secondary odor neutralization to obtain the finished product. The spray granules prepared by this invention have a long-lasting odor-neutralizing effect, good environmental performance, and excellent elasticity, wear resistance, and adhesion strength; the process is highly controllable, the product has uniform particle size, good aging resistance, and is suitable for the spraying needs of various sports fields, while realizing the resource utilization of waste rubber, possessing both practical and environmental value.

The invention belongs to the technical field of fermentation engineering, and particularly discloses a low-cost fermentation medium for bifidobacterium lactis. At present, most bifidobacterium lactis culture media adopt MRS culture media, nitrogen sources of the MRS culture media comprise beef extract powder, yeast extract powder, peptone and the like, and the MRS culture media based on the nitrogen sources are high in price and high in large-scale industrial cost. In the microbial fermentation industry, the cost of the fermentation culture medium is about one third of the fermentation production cost, the main cost of the MRS culture medium is the nitrogen source, and the fermentation production cost can be reduced by reducing the cost of the nitrogen source. The corn steep liquor dry powder is a plant nitrogen source suitable for a bifidobacterium culture medium and contains rich soluble protein, amino acid, vitamins, inorganic salt and the like, the protein content is about 40%, and the nutritional cost of the corn steep liquor dry powder meets the breeding requirement of bifidobacterium lactis. The corn steep liquor dry powder is low in price, the purchase price of the corn steep liquor dry powder is only one tenth or lower than that of beef extract powder and peptone, and the large-scale industrial production cost can be reduced. The formula of the culture medium comprises 10-20 g / L of galactooligosaccharide, 5-10 g / L of glucose monohydrate, 30-40 g / L of corn steep liquor dry powder, 5-10 g / L of yeast peptone and 1-3 g / L of anhydrous sodium acetate. According to the invention, the water-soluble component of the dry powder of the corn steep liquor is used as a main nitrogen source of the culture medium, and the purposes of sustainable utilization of resources and yield improvement in the production of bifidobacterium lactis can be achieved through the application of the culture medium.