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CN-122004428-A - Preparation method of low-sodium high-calcium dried small shrimp powder and low-sodium high-calcium dried small shrimp powder

CN122004428ACN 122004428 ACN122004428 ACN 122004428ACN-122004428-A

Abstract

The application provides a preparation method of low-sodium high-calcium dried small shrimp powder and the low-sodium high-calcium dried small shrimp powder. The preparation method of the low-sodium high-calcium dried small shrimp powder comprises the steps of mixing dried small shrimps with distilled water to form a small shrimp mixed solution, processing the small shrimp mixed solution through an intermittent probe ultrasonic auxiliary processing technology, replacing a water source at fixed time to obtain pretreated small shrimps, crushing the pretreated small shrimps into small shrimps powder, adding the small shrimps into the distilled water according to a solid-to-liquid ratio of 1:3-1:6 to form an initial solution, adding hydrogen type cation exchange resin according to a solid-to-liquid ratio of 1:4-1:6 to form a processing solution, adjusting the pH of the processing solution to be 4.0-5.0, stirring for a first preset time period, adjusting the pH of the processing solution to be 6.5-7.0, adding an organic acid, stirring for a second preset time period to obtain the processed mixed solution, screening the hydrogen type cation exchange resin in the filtered mixed solution, and performing spray drying treatment on the mixed solution to obtain the low-sodium high-calcium dried small shrimps powder.

Inventors

  • ZHANG BIN
  • Shui Shanshan

Assignees

  • 浙江海洋大学

Dates

Publication Date
20260512
Application Date
20260413

Claims (10)

  1. 1. The preparation method of the low-sodium high-calcium dried small shrimp powder is characterized by comprising the following steps of: mixing dried small shrimps with distilled water to form a small shrimp mixed solution; treating the dried small shrimp mixed solution by using an intermittent probe ultrasonic auxiliary treatment technology, and replacing a water source at regular time in the treatment process to obtain pretreated dried small shrimp; Crushing the pretreated dried small shrimps into dried small shrimps powder, and adding the dried small shrimps powder into distilled water according to the solid-to-liquid ratio of 1:3-1:6 to form an initial solution, wherein the particle size of the dried small shrimps powder is smaller than or equal to 1.0 mm; Adding hydrogen type cation exchange resin into the initial solution according to the solid-to-liquid ratio of 1:4-1:6 to form a treatment liquid, wherein the particle size of the hydrogen type cation exchange resin is larger than or equal to that of the dried small shrimps powder, and the particle size of the hydrogen type cation exchange resin is 1.0 mm-1.5 mm; Adjusting the pH value of the treatment liquid to 4.0-5.0, and stirring for a first preset time period to carry out first-stage desalination treatment, wherein the first preset time period is 15-30 min; Adjusting the pH value of the treatment liquid to be 6.5-7.0, adding a specified organic acid into the treatment liquid, and stirring for a second preset time period to carry out second-stage desalting treatment to obtain a treated mixed liquid, wherein the second preset time period is 5-10 min; And screening and filtering the hydrogen type cation exchange resin in the treated mixed solution, and carrying out spray drying treatment on the screened and filtered mixed solution to obtain the low-sodium high-calcium dried small shrimp powder.
  2. 2. The method according to claim 1, wherein the dried small shrimps powder has a particle size of 0.9mm; the hydrogen type cation exchange resin is added into the initial solution according to the solid-liquid ratio of 1:4-1:6 to form the treatment solution, and the treatment solution comprises the following components: Adding the hydrogen type cation exchange resin into the initial solution according to the solid-to-liquid ratio of 1:5; The step of adjusting the pH value of the treatment liquid to 4.0-5.0, and stirring for a first preset time period to perform a first stage desalination treatment comprises the following steps: Adjusting the pH value of the treatment liquid to 4.5, and stirring for 18min; The step of adjusting the pH value of the treatment liquid to 6.5-7.0, and simultaneously adding the specified organic acid into the treatment liquid and stirring for a second preset time period, comprises the following steps: The pH value of the treatment liquid was adjusted to 7.0, and at the same time, a specified organic acid was added to the treatment liquid and stirred for 5 minutes.
  3. 3. The method according to claim 1, wherein the dried small shrimps powder has a particle size of 0.9mm; the hydrogen type cation exchange resin is added into the initial solution according to the solid-liquid ratio of 1:4-1:6 to form the treatment solution, and the treatment solution comprises the following components: adding the hydrogen type cation exchange resin into the initial solution according to the solid-to-liquid ratio of 1:6; The step of adjusting the pH value of the treatment liquid to 4.0-5.0, and stirring for a first preset time period to perform a first stage desalination treatment comprises the following steps: adjusting the pH value of the treatment liquid to 4.8, and stirring for 16min; The step of adjusting the pH value of the treatment liquid to 6.5-7.0, and simultaneously adding the specified organic acid into the treatment liquid and stirring for a second preset time period, comprises the following steps: The pH value of the treatment liquid was adjusted to 6.9, and at the same time, a specified organic acid was added to the treatment liquid and stirred for 7 minutes.
  4. 4. The method according to claim 1, wherein the dried small shrimps powder has a particle size of 1.0mm; the hydrogen type cation exchange resin is added into the initial solution according to the solid-liquid ratio of 1:4-1:6 to form the treatment solution, and the treatment solution comprises the following components: Adding the hydrogen type cation exchange resin into the initial solution according to the solid-to-liquid ratio of 1:4; The step of adjusting the pH value of the treatment liquid to 4.0-5.0, and stirring for a first preset time period to perform a first stage desalination treatment comprises the following steps: Adjusting the pH value of the treatment liquid to 4.2, and stirring for 20min; The step of adjusting the pH value of the treatment liquid to 6.5-7.0, and simultaneously adding the specified organic acid into the treatment liquid and stirring for a second preset time period, comprises the following steps: The pH value of the treatment liquid was adjusted to 6.8, and at the same time, a specified organic acid was added to the treatment liquid and stirred for 9 minutes.
  5. 5. The method according to claim 1, wherein the specified organic acid is any one of citric acid, oxalic acid, lactic acid, malic acid and gluconic acid.
  6. 6. The process according to claim 1, wherein the hydrogen-form cation exchange resin is any one of IR 120H type resin, amberlite IR120 type resin, dowex 50WX-8 type resin and Purolite C100 type resin.
  7. 7. The method of claim 1, wherein the mixing the dried shrimp shell with distilled water to obtain the shrimp shell mixed solution comprises: And mixing the dried small shrimps with distilled water according to a solid-to-liquid ratio of 1:5-1:8 to obtain a small shrimp mixed solution.
  8. 8. The method of claim 1 or 7, wherein the step of treating the shrimp shell mixed liquid by using an intermittent probe ultrasonic wave assisted treatment technology and replacing a water source at a fixed time in the treatment process to obtain the pretreated shrimp shell comprises the steps of: The shrimp shell mixed liquid is treated by adopting an intermittent probe ultrasonic auxiliary treatment technology, wherein the treatment parameters of the intermittent probe ultrasonic auxiliary treatment are that the ultrasonic frequency is 15-25 kHz, the treatment time is 20-40 min, and the treatment is paused for 2-5 min every 30 s; In the treatment process, 2-5 times of distilled water is replaced; And filtering the dried small shrimps from the dried small shrimp mixed solution after the treatment is finished, and draining the filtered dried small shrimps to obtain the pretreated dried small shrimps.
  9. 9. The low-sodium high-calcium dried small shrimp powder is characterized in that the low-sodium high-calcium dried small shrimp powder is prepared by the preparation method of the low-sodium high-calcium dried small shrimp powder according to any one of claims 1-8.
  10. 10. The low-sodium high-calcium dried small shrimp powder of claim 9, wherein the sodium content in the low-sodium high-calcium dried small shrimp powder is 1.63 g/kg-1.89 g/kg, and the calcium content in the low-sodium high-calcium dried small shrimp powder is 12.85 g/kg-13.12 g/kg.

Description

Preparation method of low-sodium high-calcium dried small shrimp powder and low-sodium high-calcium dried small shrimp powder Technical Field The application relates to the technical field of food processing, in particular to a preparation method of low-sodium high-calcium dried small shrimp powder and the low-sodium high-calcium dried small shrimp powder. Background Dried small shrimps are widely used as seafood rich in proteins, calcium and trace elements in food processing, but the high sodium salt content makes the dried small shrimps unsuitable for infants, low-sodium diets and patients with hypertension. Only conventional desalting technology, such as simple soaking or water washing, is low in sodium removal efficiency (generally less than or equal to 60%), and the calcium loss rate is up to 30-50% due to repeated water washing, so that the nutritional value of the dried shrimps is seriously reduced. In addition, the traditional methods have long time consumption and large water consumption, and are difficult to meet the requirements of industrial production on high efficiency, energy conservation and environmental protection. In recent years, although some improved technologies (such as an ion exchange method or a membrane separation technology) improve the sodium removal efficiency, the problems of insufficient resin adsorption selectivity, competitive loss of calcium ions or high equipment cost still exist, and the aim of low sodium content is difficult to achieve while high calcium content is maintained. Therefore, development of a preparation technology which is efficient, green and applicable to industrialization is needed to prepare the low-sodium and high-calcium shrimp powder so as to meet the industrial production requirements of infant complementary food, nutrition-enriched food and low-sodium health food, and meanwhile, the process stability and the economy are both considered. Disclosure of Invention In view of the above, the application provides a preparation method of low-sodium high-calcium dried small shrimp powder and the low-sodium high-calcium dried small shrimp powder, which are used for preparing the low-sodium high-calcium dried small shrimp powder. Specifically, the application is realized by the following technical scheme: The first aspect of the application provides a preparation method of low-sodium high-calcium dried small shrimp powder, which comprises the following steps: mixing dried small shrimps with distilled water to form a small shrimp mixed solution; treating the dried small shrimp mixed solution by using an intermittent probe ultrasonic auxiliary treatment technology, and replacing a water source at regular time in the treatment process to obtain pretreated dried small shrimp; Crushing the pretreated dried small shrimps into dried small shrimps powder, and adding the dried small shrimps powder into distilled water according to the solid-to-liquid ratio of 1:3-1:6 to form an initial solution, wherein the particle size of the dried small shrimps powder is smaller than or equal to 1.0 mm; Adding the hydrogen type cation exchange resin into the initial solution according to the solid-to-liquid ratio of 1:4-1:6 to form the treatment solution, wherein the particle size of the hydrogen type cation exchange resin is larger than or equal to that of the dried small shrimps powder, and the particle size of the hydrogen type cation exchange resin is 1.0 mm-1.5 mm; Adjusting the pH value of the treatment liquid to 4.0-5.0, and stirring for a first preset time period to carry out first-stage desalination treatment, wherein the first preset time period is 15-30 min; Adjusting the pH value of the treatment liquid to be 6.5-7.0, adding a specified organic acid into the treatment liquid, and stirring for a second preset time period to carry out second-stage desalting treatment to obtain a treated mixed liquid, wherein the second preset time period is 5-10 min; And screening and filtering the hydrogen type cation exchange resin in the treated mixed solution, and carrying out spray drying treatment on the screened and filtered mixed solution to obtain the low-sodium high-calcium dried small shrimp powder. The second aspect of the application provides low-sodium high-calcium dried small shrimp powder, which is prepared by the preparation method of the low-sodium high-calcium dried small shrimp powder. The preparation method of the low-sodium high-calcium dried small shrimp powder and the low-sodium high-calcium dried small shrimp powder realize high-efficiency desalination and high retention rate of nutrient components through the integrated intermittent probe ultrasonic auxiliary treatment, hydrogen type cation exchange resin staged adsorption, spray drying and other advanced technologies; firstly, soaking raw dried shrimps in distilled water at 4-10 ℃ in a solid-to-liquid ratio of 1:5-1:8 to soften the dried shrimps and dissolve surface salt; then, adopting 15-25 kHz ultrasonic wave