Preparation method of graft copolymer crop nutrient solution containing tryptophan

A graft copolymer, tryptophan technology, applied in liquid fertilizers, fertilizer mixtures, animal carcass fertilizers, etc., can solve problems such as affecting convenience, increasing costs, etc., achieving safe and efficient use, promoting crop growth, and easy equipment investment. Effect

Inactive Publication Date: 2017-06-20
YANTAI GOODLY BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Patent CN201610589592.4 relates to the preparation of a slow-release orchid rooting agent. The sodium carboxymethylcellulose in the component plays the role of thickening and slow-release; patent CN201410144280.3 uses sodium-based bentonite as a slow-release agent, alu

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example 1

[0025] 1) Add 50 kg of 600,000 molecular weight chitosan to 20 times the volume of water, add acid to adjust the pH to 3.5, and stir evenly, add 3 kg of liquid high-temperature amylase with an enzyme activity of 12000 U / ml, heat the water bath to 80°C, and stir for 1 hour. Adjust the pH to 7, and filter to obtain 1000L of enzymatic hydrolysate;

[0026] 2) Add 50kg tryptophan, 250g sodium bisulfite and 250g ammonium persulfate to step 1) enzymolysis solution, control the reaction temperature to 70°C, reaction time 2.5h, cool to room temperature, take the supernatant as the reaction solution, About 950L;

[0027] 3) The reaction solution in step 2) is subjected to nanofiltration treatment, the nanofiltration membrane has a pore size of 1000 Daltons, and the conductivity of the permeate is lower than 3000μs / cm. Stop the top washing with water, and collect 830L of the concentrate;

[0028] 4) Perform ultrafiltration treatment on the concentrated liquid of step 3), the...

Example Embodiment

[0031] Example 2

[0032] 1) 80,000 molecular weight chitosan 40kg plus 25 times the volume of water, add acid to adjust the pH to 4.0, stir evenly, add 2.0kg of liquid high-temperature amylase with enzyme activity of 12000U / ml, heat the water bath to 100°C, and stir for 1 hour , Adjust the pH to 8, filter to obtain about 1000L of enzymatic hydrolysate;

[0033] 2) Add 52kg tryptophan, 182g sodium bisulfite and 182g ammonium persulfate to step 1) enzymatic hydrolysis solution, control the reaction temperature to 80°C, reaction time 3h, cool to room temperature, take the supernatant as the reaction solution, About 970L;

[0034] 3) The step 2) reaction solution is subjected to nanofiltration treatment, the nanofiltration membrane has a pore size of 800 Daltons, and the conductivity of the permeate is lower than 3000 μs / cm. Stop the top washing with water, and collect 780L of the concentrate;

[0035] 4) The step 3) concentrate is subjected to ultrafiltration treatment, the ultrafiltra...

Example Embodiment

[0038] Example 3

[0039] 1) 700,000 molecular weight chitosan 40kg plus 30 times the volume of water, add acid to adjust the pH to 5.0, stir evenly, add 3.2kg of liquid high-temperature amylase with an enzyme activity of 15000U / ml, heat the water bath to 100°C and stir for 1 hour , Adjust the pH to 7.5, filter to obtain about 1200L of enzymatic hydrolysate;

[0040] 2) Add 60kg tryptophan, 150g sodium bisulfite and 150g ammonium persulfate to step 1) enzymatic hydrolysis solution, control the reaction temperature to 65°C, reaction time 3h, cool to room temperature, take the supernatant as the reaction solution, About 1150L;

[0041] 3) The step 2) reaction liquid is subjected to nanofiltration treatment, the nanofiltration membrane has a pore size of 900 Daltons, and the conductivity of the permeate is lower than 3000μs / cm. Stop the top washing with water, and collect 1030L of the concentrate;

[0042] 4) The step 3) concentrate is subjected to ultrafiltration treatment, the ultrafi...

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Abstract

The invention relates o a preparation method of a graft copolymer crop nutrient solution containing chitosan oligosaccharide and tryptophan. The preparation method comprises following steps: chitosan is subjected to enzymatic hydrolysis with amylase under acidic conditions, appropriate amounts of tryptophan and a initiator are added into an obtained enzymatic hydrolysate, reaction is carried out for 2 to 3h at a reaction temperature controlled to be 60 to 80 DEG C, an obtained reaction liquid is subjected to nanofiltration so as to obtain a concentrate, the concentrate is subjected to nanofiltration so as to obtain a dialysate, the dialysate is mixed with other nutrient components so as to obtain a finished product via filling. The obtained finished product is diluted with water of 100 to 500 volume times, and an obtained diluted solution is capable of promoting the growth of crop root systems obviously, and increasing crop yield.

Description

technical field [0001] The invention relates to a preparation method of a crop nutrient solution of tryptophan and chitosan oligosaccharide graft copolymer, belonging to the technical field of fertilizer production. Background technique [0002] The root-soil interface is the main channel for soil moisture and nutrients to enter the plant. The root system is the core content and material basis of the root-soil interface. Its distribution and function directly or indirectly affect the growth of the aboveground part and the survival and development of the entire plant. In the farmland soil environment where crops depend on, water and fertilizer are the factors that most frequently affect crop roots and are also the most easily controlled by humans. The development of functional fertilizers that promote root development has broad market prospects. [0003] Patents CN201510113264.2 and CN201410175483.9 relate to a preparation method of a rooting agent. The main components of the...

Claims

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Application Information

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IPC IPC(8): C05G3/00C08B37/08
CPCC05C3/00C05G5/23C08B37/003C05C11/00C05D9/00C05F1/002C05F11/00C05F11/08
Inventor 常晓菲常大勇高筱莎
Owner YANTAI GOODLY BIOTECH
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