41results about How to "Reduce organic acid content" patented technology

A method for promoting the colouring on fruit (apple, pear, peach, grape, etc) features that the 5-aminolevulinic acid (ALA), or levulinic acid (LA)1 or glutamic acid (Glu) is applied to the fruit.

The invention relates to an agent for promoting fruit coloration of Nanguo pear. The agent is aqueous and dedicated for Nanguo pear, and can increase the 'red fruit' rate by regulating and controlling the synthesis and metabolism of anthocyanidin in Nanguo pear. The agent contains the following components: uniconazole 0.1g / L, sucrose 1g / L, potassium sulfate 1g / L, calcium chloride 3g / L, levulinic acid 0.1g / L, glutamic acid 1.0g / L, tyrosine 0.3g / L, phenylalanine 0.3g / L, boric acid 0.3g / L, Tween 100 1ml / L, and water in balance. The agent is prepared by the following steps: (1) respectively weighting uniconazole, sucrose, potassium sulfate, calcium chloride, levulinic acid, glutamic acid, tyrosine, phenylalanine, boric acid and Tween 100 at the given ratio; (2) respectively dissolving the materials in water, wherein uniconazole is dissolved with methanol; glutamic acid, tyrosine and phenylalanine are dissolves with distilled water at 100 DEG C; and potassium sulfate and calcium chloride are dissolved with distilled water at 50-70 DEG C; mixing after dilution; adding water until the desired concentration; and stirring thoroughly to obtain the final product. The agent can increase the 'red fruit' rate of Nanguo pear by 14%, and is convenient to use and harmless and innoxious to human body and environment.

The invention provides a phosphogypsum soil improver and a preparation method thereof, which are used for improving soil polluted by heavy metals and belong to the field of soil improvers. The phosphogypsum soil improver is prepared from the following raw materials: phosphogypsum treated with active microorganisms is used as a carrier, and modified activated carbon and adsorbent are added; the quality of the phosphogypsum accounts for 40-60% of the total quality of the improver %; the mass ratio of the modified activated carbon to phosphogypsum is 1:3-5; the balance is an adsorbent; the soil improver of the present invention is rich in mineral content and has a variety of fermentation active substances, which can significantly improve the microbial activity in the soil. The activity further improves the phosphatase activity, which improves the repair ability of the soil, forms the elastic mechanism of the soil for heavy metal deposition, and significantly improves the treatment effect on heavy metal-contaminated soil.