30results about How to "Reduce yellowing rate" patented technology

The invention belongs to the field of flower planting, and particularly relates to a large-scale planting method of fly-feather arrowroot. According to the large-scale planting method of fly-feather arrowroot, guttation of plants is limited by controlling temperature and humidity, proper fertilizer and water are added, the defects that guttation of fly-feather arrowroot is serious, and leaves etiolate in the planting process are overcome, and the requirement for large-scale planting is met.

The invention relates to the technical field of food preservation, and provides a chitosan preservation method for shallots. According to the research of the present invention, it is found that a high concentration of chitosan (a mass concentration of more than 1.0%) will instead accelerate the rot and yellowing speed of the shallot and reduce the storage time. After the chitosan solution of suitable concentration (mass concentration of 0.2% to 0.75%) is used to treat the shallot, a semi-permeable membrane with suitable thickness can be formed on the surface of the shallot, which can not only satisfy the normal and slow aerobic respiration of the leaves of the shallot, but also be able to Reduce water evaporation, reduce the invasion of bacteria, so as to achieve the purpose of prolonging the storage time of scallions and prolong the shelf life of scallions. By adopting the method of the invention, the effective storage period of the shallot can be extended to about 15 days, and the fresh-keeping method is safe, reliable, low in cost and easy to operate.

The invention relates to a process for washing vulcanized black denim garments. The process comprises the following steps: placing pretreated denim garments in a desizing solution, performing desizing treatment at 0-60°C for 10-30 minutes, draining and washing with water at normal temperature; Put the denim garment after desizing treatment in the enzyme solution, treat it at 30-40°C for 15-60 minutes, drain and wash it with clean water at room temperature; place the denim garment after enzyme washing treatment in the rinse solution, and treat it at 40-50°C 10‑50 minutes, drain and wash with water at normal temperature; add dechlorination and deodorant to the rinsed denim garments, treat at 30‑40°C for 5‑15 minutes, drain and wash with normal temperature water; neutralize denim garments once After dehydration and drying, spray the PP solution on the denim garment surface and wash it with water; treat the denim garment sprayed with PP with hydroxylamine sulfate at 20-50°C for 5-15 minutes, drain and wash with water at room temperature; After the processed denim garment is post-treated, it can be dehydrated and dried. Compared with the prior art, the process of the invention is environmentally friendly and safe, and the denim garment has better performance.

The invention discloses an anti-yellowing finishing process for light-colored fabrics. The anti-yellowing finishing process is implemented by adding an optimized anti-yellowing finishing process for four times in processing, dyeing and finishing processes of common light-colored fabrics, specifically, firstly, carrying out an anti-yellowing one-bath process simultaneously a dyeing process is performed, secondly, carrying out an anti-yellowing soaking process before soaping is performed, thirdly, carrying out an anti-yellowing one-bath process while the last washing process is performed, and finally carrying out an anti-yellowing finishing process in a heat setting process. The optimization of the four-time anti-yellowing finishing process effectively reduces the probability of yellowing of the light-colored fabrics, so that finished fabric products are balanced in color; the anti-yellowing finishing process for the light-colored fabrics disclosed by the invention has the advantages of environmental friendliness and high quality, and has strong practicability.

The invention discloses a fresh-keeping method for leaf-eating grass. a, select leaf-eating grass blades without mechanical damage and damage by diseases and insect pests; b, spray antistaling agent evenly on the surface of leaf-eating grass blades, and described antistaling agent contains propionic acid, and its concentration is 0.01%-0.5% by mass; Chlorine Phenylfenuron, its concentration is 10-50ppm; Adenosine triphosphate, its concentration is 10-100ppm; c, dry the leaf-eating grass after fresh-keeping treatment again, put into the function packing bag of water-locking breathable, put again Add 1-methylcyclopropene so that the final concentration is 1-30ppm, tie up the packaging bag, and store. The method of the present invention is used to store and keep the leaf-eating grass fresh. After storage at low temperature for 60 days, the rot rate is reduced by 95%, and the yellowing rate of the leaves is relatively reduced by 95%. It can be stored for 10 days at normal temperature, and the rot rate is reduced by 50%. %, the yellowing rate is relatively reduced by 85%.