CN103637160A - Preparation process of liquid edible salt - Google Patents

The invention belongs to the field of condiments and in particular relates to a preparation process of liquid edible salt. The liquid edible salt is obtained by carrying out first-level filtering, first-level adsorption, evaporation, redissolution, purification treatment, second-level filtering, second-level absorption and evaporation on a raw material of brine. The liquid edible salt produced by the preparation process is environmentally friendly, safe, convenient to use, free of pollution and any antitackiness agent and good in taste. Saline taste directly acts on the surface of cooked food during addition, the additive amount is easy to control, the addition is uniform, and the acceptable daily intake of the edible salt is easy to control.

A kind of preparation technology of liquid edible salt

Technical field

The invention belongs to field of seasoning, relate in particular to a kind of preparation technology of liquid edible salt.

Background technology

Along with improving constantly of living standard, people more and more pay close attention to the health problem of diet.Salt daily intaking amount is too much, quite large to the harm of human body, the illnesss such as general population's the too high easy initiation hypertension of the long-term intake of salt, kidney stone, cancer of the stomach; It is too much that pregnant woman takes in salt, can cause the blue or green disease of blood, and diabetes patient's salt too much can cause that blood sugar raises.

On existing market, salt product mostly is graininess, and people, in the process of cooking food, are difficult to control preferably the intake of salt.Therefore how under the prerequisite of normal psychological need, providing a kind of addition to hold manageable edible salt product and meet Condiment Market and people's healthy diet demand guaranteeing, is those skilled in the art's problem demanding prompt solutions.

Summary of the invention

The preparation technology who the object of this invention is to provide a kind of liquid edible salt, technique of the present invention is simple, and the liquid edible salt of preparing is easy to use, and addition is easy to control.

For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:

A preparation technology for liquid edible salt, step is as follows:

The first step: be≤0.2% by raw brine single filter to suspension content, then carrying out one-level, to be adsorbed to colloidal substance content be≤0.3%;

Second step: first step products therefrom is evaporated to bittern purity > 95% at the steam pressure of 0.1-0.3MPa, and concentration is greater than 295g/L, then adds water back dissolving and carries out cascade filtration to suspension content≤0.1%;

The 3rd step: be≤0.1% by second step products therefrom secondary absorption to the small-molecule substance content such as organic hydrocarbon, then carry out purified treatment to Ca ²⁺≤ 0.5%, Mg ²⁺≤ 0.2%;

The 4th step: the 3rd step products therefrom is evaporated to sodium chloride content >=300g/L, then coolingly obtains described liquid edible salt.

Preferably, in the first step, raw brine carries out single filter by grade one filter, by first class absorber, carries out one-level absorption.

Preferably, in second step, by evaporimeter, first step products therefrom is evaporated, and successively by remelter and secondary filter, evaporation afterproduct is carried out to back dissolving and cascade filtration.

Preferably, in the 3rd step, by second class absorber, second step products therefrom is carried out to secondary absorption, the product by purifier after to secondary absorption carries out purified treatment.

Preferably, in the 4th step, by evaporimeter, the 3rd step products therefrom is evaporated.

Preferably, in the 4th step products therefrom, adding iodide to content of iodine is that in the 4th step products therefrom, to add iodide to content of iodine be 20mg/kg ± 30%, 25mg/kg ± 30% or 30 mg/kg ± 30%.

The present invention compared with prior art, tool has the following advantages: the liquid edible salt of explained hereafter of the present invention, environmental protection, safe, pollution-free, easy to use, its maximum feature is not add any anticaking agent, and mouthfeel is good, during interpolation, saline taste directly acts on dish surface, addition is easy to control, adds evenly, more easily controls the intake of salt.

Accompanying drawing explanation

Fig. 1 is process chart of the present invention.

The specific embodiment

In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.

embodiment 1

The first step: it is 0.13% that raw brine is carried out to single filter to suspension content by grade one filter, then by first class absorber, carrying out one-level, to be adsorbed to colloidal substance content be 0.25%;

Second step: it is 96.7% that first step products therefrom is evaporated to bittern purity by evaporimeter at the steam pressure of 0.1MPa, and concentration is 296.3g/L, and then being added water back dissolving and carried out cascade filtration to suspension by secondary filter by remelter is 0.04%;

The 3rd step: it is 0.086% that second step products therefrom is carried out to secondary absorption to the small-molecule substance content such as organic hydrocarbon by second class absorber, then by purifier, the product after to secondary absorption carries out purified treatment to Ca ²⁺content is: 0.34%, Mg ²⁺content is: 0.12%;

The 4th step: the 3rd step products therefrom is evaporated to sodium chloride content >=300g/L, then coolingly obtains described liquid edible salt.

The edible liquid of preparing gained without salt compounded of iodine product testing result and the present embodiment of common salt manufacturing production technology contrasts as follows without iodine edible salt product testing result:

Table one: common without iodine common salt top grade product testing result

Table two: without iodine liquid edible salt top grade product testing result

embodiment 2

The first step: it is 0.10% that raw brine is carried out to single filter to suspension content by grade one filter, then by first class absorber, carrying out one-level, to be adsorbed to colloidal substance content be 0.19%;

Second step: it is 97.5% that first step products therefrom is evaporated to bittern purity by evaporimeter at the steam pressure of 0.1-0.3MPa, concentration is 295.9g/L, and then by remelter, being added water back dissolving and carried out cascade filtration to suspension by secondary filter is 0.052%;

The 3rd step: it is 0.063% that second step products therefrom is carried out to secondary absorption to the small-molecule substance content such as organic hydrocarbon by second class absorber, then by purifier, the product after to secondary absorption carries out purified treatment to Ca ²⁺content is: 0.28%, Mg ²⁺content is: 0.15%;

The 4th step: the 3rd step products therefrom is evaporated to sodium chloride content >=300g/L, then coolingly obtains described liquid edible salt.

The 5th step: be 32mg/kg by adding iodide to content of iodine in the 4th step products therefrom.

Liquid edible salt compounded of iodine product testing result contrast prepared by common salt manufacturing production technology edible iodized salt product testing result and the present embodiment:

Table three: common salt compounded of iodine top grade product testing result

Table four: iodin-containing liquid body edible salt top grade product testing result

embodiment 3

The first step: it is 0.14% that raw brine is carried out to single filter to suspension content by grade one filter, then by first class absorber, carrying out one-level, to be adsorbed to colloidal substance content be 0.11%;

Second step: it is 98.6% that first step products therefrom is evaporated to bittern purity under the steam pressure of 0.15MPa by evaporimeter, concentration is 298.3g/L, and then by remelter, being added water back dissolving and carried out cascade filtration to suspension by secondary filter is 0.067%;

The 3rd step: it is 0.03% that second step products therefrom is carried out to secondary absorption to the small-molecule substance content such as organic hydrocarbon by second class absorber, then by purifier, the product after to secondary absorption carries out purified treatment to Ca ²⁺content is: 0.21%, Mg ²⁺content is: 0.17%;

The 4th step: the 3rd step products therefrom is evaporated to sodium chloride content >=300g/L, then coolingly obtains described liquid edible salt.

The 5th step: be 28mg/kg by adding iodide to content of iodine in the 4th step products therefrom.

Liquid edible salt compounded of iodine product testing result prepared by the present embodiment is as follows:

Table five: iodin-containing liquid body edible salt top grade product testing result