Preparation method of selenium-rich protein peptide leaf fertilizer

Abstract

The invention relates to a preparation method of a selenium-rich protein peptide leaf fertilizer. The preparation method comprises the following steps: (1) preparing protein peptide enzymatic hydrolysate: carrying out blood dissolving, enzymolysis, decoloration and ultrafiltration on fresh pig blood as a raw material; (2) mixing chitosan, selenium compounds and citric acid in a certain proportion, and preparing a nano-selenium solution in a water phase; (3) adding the nano-selenium solution into the protein peptide enzymatic hydrolysate with the temperature of 55-65 DEG C so as to obtain mixed liquid, heating the mixed liquid to 45-60 DEG C, and reacting for 1-2 hours, so as to obtain finished liquid; and (4) concentrating and drying the finished liquid, so as to obtain the finished product. The selenium-rich protein peptide leaf fertilizer is rich in high-activity oligopeptides and free amino acids as well as selenium and chitosan, can be rapidly and thoroughly dissolved, can be easily absorbed by crops and can be rapidly conveyed in the crops, so that the problem that the leaf fertilizer is difficult to absorb is solved, the growth speed and the disease resistance of the crops are greatly increased, and the crop quality is improved.

Description

technical field [0001] The invention relates to the field of dietary nutrition, in particular to a preparation method of selenoprotein peptide foliar fertilizer. Background technique [0002] Foliar fertilizers are often used in agriculture to quickly supplement the nutrients needed by plants. Because of their convenience, quickness, better absorption effect and less waste than root fertilization, various nutritional or functional foliar fertilizers have gradually entered the market in recent years. However, in recent years, most of the foliar fertilizers produced in China have low effective content and single function, and most of them are to supplement trace elements for crops, and have single nutritional components. The Chinese patent with the patent number CN101891520 disclosed an amino acid foliar fertilizer on August 29, 2012, which is prepared from the following materials in terms of mass percentage: 30%-50% plant amino acids, 1%-5% compound nitrophenol Sodium, 15%-2...

AI Technical Summary

Problems solved by technology

However, in recent years, most of the foliar fertilizers produced in China have low effective content and single function. Most of them are to supplement trace elements for crops and have single nutritional components.

The Chinese patent with the patent number CN101891520 disclosed an amino acid foliar fertilizer on August 29, 2012, which is prepared from the following materials in terms of mass percentage: 30%-50% plant amino acids, 1%-5% compound nitrophenol Sodium, 15%-25% urea, 5%-10% ferrous sulfate, 5%-10% borax, 3%-5% copper sulfate, 0.5%-1% ammonium molybdate, 1%-2% manganese sulfate, 4%-8% zinc sulfate, 10%-20% organic silicon and the balance of water, the foliar fertilizer stimulates the activity of enzymes in crops, improves the photosynthetic efficiency of crops, accelerates the absorption and operation of internal nutrients, and increases the content of chlorophyll , increase the accumulation of stem matter and sugar content, improve crop quality, enhance crop resistance to drought, disease resistance, stress resistance and immunity, etc., all have obvious effects, but there are also deficiencies, for example, a single mixture of multiple elements to make a concentrated solution , mixed with water, the element utilization rate is not high, the effect is not stable enough; after absorption, the transportation efficiency in the crop is low, etc.

There are few reports on the application of porcine blood protein peptides