阅读说明：本技术 一种从白刺干叶中提取植物盐的方法 (Method for extracting plant salt from nitraria tangutorum leaves ) 是由 马烨 袁增辉 李冬冬 赵婌君 于 2019-10-10 设计创作，主要内容包括：本发明公开了一种从白刺干叶中制备植物盐的方法,包括以下步骤：将白刺干叶洗净、晾干；再经烘干后,置于粉碎机中粉碎,过筛；将粉碎后的白刺叶放置电炉上炭化；再溶解于盐酸溶液中,搅拌,过滤,取滤液蒸馏,收集白色结晶物,再用去离子水溶解,重结晶,制得白刺干叶制植物盐。本发明通过高温煅烧法碳化破碎的白刺干叶,再用盐酸萃取其中的植物盐,经重结晶提纯精制。其方法简单,步骤易操作,过程无污染,效率高,且成本低,充分挖掘了对白刺干叶的价值利用,为白刺果的综合利用和深度开发提供了新的方向,为白刺干叶的综合利用和深开发提供技术支持,具有很强的实用性和广泛的适用性。(The invention discloses a method for preparing plant salt from dry leaves of nitraria tangutorum bobr, which comprises the following steps: cleaning dry nitraria leaf, and air drying; drying, pulverizing in a pulverizer, and sieving; charring the pulverized nitraria tangutorum leaves on an electric furnace; dissolving in hydrochloric acid solution, stirring, filtering, distilling the filtrate, collecting white crystal, dissolving in deionized water, and recrystallizing to obtain dry leaf of Nitraria sibirica pall. The invention carbonizes the broken dry nitraria leaf by a high temperature calcination method, extracts the plant salt by hydrochloric acid, and purifies and refines by recrystallization. The method is simple, the steps are easy to operate, the process is pollution-free, the efficiency is high, the cost is low, the value utilization of the dry leaves of the nitraria tangutorum bobr is fully developed, a new direction is provided for the comprehensive utilization and the depth development of the nitraria tangutorum bobr, technical support is provided for the comprehensive utilization and the depth development of the dry leaves of the nitraria tangutorum bobr, and the method has strong practicability and wide applicability.)

1. A method for preparing plant salt from dry leaves of nitraria tangutorum bobr comprises the following steps:

s1, cleaning and airing the dry nitraria tangutorum leaves;

s2, drying the dry nitraria leaf, putting the dried nitraria leaf into a crusher to be crushed, and sieving the crushed nitraria leaf;

s3, placing the crushed nitraria tangutorum leaves on an electric furnace for carbonization;

s4, dissolving the carbonized product in a hydrochloric acid solution, stirring, and filtering to obtain a filtrate;

s5, distilling the filtrate, collecting white crystals, dissolving the white crystals in deionized water, and recrystallizing to obtain the plant salt prepared from the dry leaves of nitraria tangutorum bobr.

2. The method of claim 1, wherein the washing step S1 comprises washing the leaves with flowing water and then with deionized water after removing rotten and damaged leaves; and (4) airing, including draining with gauze and airing.

3. The method for preparing plant salt from dry leaves of nitraria tangutorum bobr according to claim 1, wherein the drying in the step S2 is performed at a temperature of 70-90 ℃; sieving with 60-80 mesh sieve.

4. The method for preparing plant salt from dry leaves of nitraria tangutorum bobr as claimed in claim 1, wherein the charring in the step S3 is performed for a plurality of times on a small-amount and multiple-time basis until no black smoke is generated; the carbonization temperature is 180 ℃ and 200 ℃, and the interval is 10-15 min.

5. The method for preparing plant salt from dry leaves of nitraria tangutorum bobr according to claim 1, wherein the hydrochloric acid solution in the step S4 has a concentration of 0.5-1 mol/L.

6. The method for preparing plant salt from dry leaves of nitraria tangutorum bobr according to claim 5, wherein the distillation in the step S5 is reduced pressure and low temperature distillation, and the temperature is 15 ℃.

Technical Field

The invention relates to a method for extracting plant salt, in particular to a method for extracting plant salt from dry leaves of nitraria tangutorum bobr.

Background

The nitraria tangutorum bobr belongs to the genus nitraria and the family Zygophyllaceae, and is a multi-branch saline-alkali-resistant droughty type short shrub. Nitraria sibirica pall is usually grown in salinization areas in desert regions and has the physiological characteristics of drought resistance, high temperature resistance, strong water retention capacity and the like. The white thorns are excellent sand-fixing shrub plants in the sand areas of China and are important research objects in wind and sand protection. The fruits are oval like soybean grains, are dark red or orange yellow after being ripened, can be directly eaten, are called desert cherries and are called third-class fruits.

The nitraria tangutorum bobr has rich resources and wide distribution, and is wild in the places of Zhangjiakou, Tianjin, Cangzhou and the like in the northwest desert area of China and the coastal areas of North China and northeast China. According to statistics, the nitraria tangutorum bobr basins are distributed in pollution-free areas with the altitude of more than 3000 m, 6-10 ten thousand tons of nitraria tangutorum bobr can be produced every year, and the method has great development value. There are records as early as in compendium of materia Medica: bai Ci has pungent, cold and nontoxic flavor, and can treat swelling and abscess, promote pus discharge, tonify kidney qi and replenish essence and marrow. But the people really began to pay attention to the nutritional value of the nitraria tangutorum bobr after the 90 s of the 20 th century. Researches show that the content of crude protein in the nitraria tangutorum bobr is 10.6-14.4%, the content of fat and fruit oil in pulp is 3.5%, the content of vitamin C also reaches 7.8-18.3%, more importantly, the nitraria tangutorum bobr also contains abundant nutrient substances such as protein, fat, sugar and the like, and the content of flavone is up to 1.1-1.9%.

The plant salt is produced by using plants as raw materials, is characterized by rich mineral substances, balanced proportion, minimal content of organic pollutants and heavy metals and is a novel salt variety. Compared with traditional mineral salt, the requirements of homogenization and fluidity are easier to achieve, and the mineral salt has certain promotion effects on trace element balance, function regulation, metabolism and health of a human body.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide a method for preparing plant salt from dry nitraria leaf.

In order to achieve the above object, the present invention adopts the following technical solutions:

a method for preparing plant salt from dry leaves of Nitraria tangutorum bobr comprises the following steps:

s1, cleaning and drying the dry nitraria leaf;

s2, drying the dry nitraria leaf, putting the dried nitraria leaf into a crusher to be crushed, and sieving the crushed nitraria leaf;

s3, placing the crushed nitraria tangutorum leaves on an electric furnace for carbonization;

s4, dissolving the carbonized product in a hydrochloric acid solution, stirring, and filtering to obtain a filtrate;

s5, distilling the filtrate, collecting white crystals, dissolving the white crystals in deionized water, and recrystallizing to obtain the plant salt prepared from the dry leaves of nitraria tangutorum bobr.

The cleaning in the step S1 includes removing rotten and damaged leaves, washing with running water, and then washing with deionized water; and (4) airing, including draining with gauze and airing.

Drying in the step S2 at the temperature of 70-90 ℃; sieving with 60-80 mesh sieve; the preferred temperature is 80 ℃; sieving with 60 mesh sieve.

Carbonizing in the step S3 for multiple times according to the principle of a small amount of carbonizing for multiple times until no black smoke is generated; the carbonization temperature is 180 ℃ and 200 ℃, and the interval is 10-15 min.

The hydrochloric acid solution in the step S4 has a concentration of 0.5-1mol/L, preferably 0.5 mol/L.

The distillation in step S5 was carried out at 15 ℃ under reduced pressure and at a low temperature.

The invention has the advantages that:

the invention relates to a method for extracting plant salt from nitraria tangutorum bobr dry leaves, which is characterized in that the crushed nitraria tangutorum bobr dry leaves are carbonized by a high-temperature calcination method, then the plant salt in the dry nitraria tangutorum bobr dry leaves is extracted by hydrochloric acid, and the plant salt is purified and refined by recrystallization. The method is simple, the steps are easy to operate, the process is pollution-free, the efficiency is high, the cost is low, the value utilization of the dry leaves of the nitraria tangutorum bobr is fully developed, a new direction is provided for the comprehensive utilization and the depth development of the nitraria tangutorum bobr, technical support is provided for the comprehensive utilization and the depth development of the dry leaves of the nitraria tangutorum bobr, and the method has strong practicability and wide applicability.

Detailed Description

The present invention will be described in detail with reference to the following embodiments.

A method for preparing plant salt from dry leaves of Nitraria tangutorum bobr comprises the following steps: dry leaf pretreatment (S1) → dry pulverization (S2) → carbonization (S3) → acid hydrolysis filtration (S4) → distillation → recrystallization refining (S5) → finished product.

S1, removing rotten and damaged leaves from the dry nitraria tangutorum leaves, washing the leaves with running water, floating and sinking, washing with deionized water, and draining and drying with gauze for later use;

s2, placing the cleaned nitraria tangutorum leaves in a constant-temperature oven at 70-90 ℃ for drying, then crushing by a crusher, and sieving by a sieve of 60-80 meshes for later use;

s3, placing the crushed nitraria tangutorum leaves on an electric furnace, and carbonizing for multiple times at the temperature of 180-200 ℃ at intervals of 10-15min until no black smoke is generated;

s4, dissolving the carbonized product in 0.5-1mol/L hydrochloric acid solution, fully stirring, and filtering the precipitate; repeating for multiple times, and mixing filtrates for later use;

s5, heating the filtrate at 15 ℃ under reduced pressure, removing the solvent until white crystals appear, and collecting the crystals for later use;

recrystallizing and refining, dissolving the crystal (plant salt) with appropriate amount of deionized water, and recrystallizing to obtain dry leaf of Nitraria sibirica pall.