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A kind of extraction method of seaweed iodine

An extraction method, seaweed iodine technology, applied in chemical instruments and methods, food science, inorganic chemistry, etc., can solve the problems of high production cost, excessive heavy metal residues, etc. The effect of boosting

Active Publication Date: 2016-06-29
YIYANTANG YINGCHENG HEALTH SALT MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The technical problem to be solved by the present invention is to provide a method for extracting seaweed iodine and a compound seaweed iodine salt additive to solve the problems of high production cost and excessive heavy metal residues in the seaweed iodine extracted in the prior art

Method used

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  • A kind of extraction method of seaweed iodine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of extracting method of seaweed iodine, specific technological process sees figure 1 ,Specific steps are as follows:

[0039] ① Dried kelp 300kg, cut into strips of 2-5 cm with a vegetable cutter, evenly divided into 3 parts and loaded into 3 pieces of 1.2m each 3 In the extraction tank, add 1000L water in the first tank, mix and extract at room temperature for 0.5 hour, and filter to obtain the filtrate. Then follow the operation procedure of 3-stage counter-current extraction to carry out counter-current immersion extraction operation sequentially, realize the reverse operation of the extraction phase and the raffinate phase through the reverse transfer of the extracted aqueous solution, contact mass transfer step by step, and finally extract the liquid from the first stage, that is, kelp. The raffinate phase, that is, the extracted kelp extraction slag, is discharged from the last stage, that is, the addition tank of the extracted water.

[0040] ②For the ex...

Embodiment 2

[0050] ①Take 300kg of sargassum, cut it into small pieces of about 5cm with a vegetable cutter, and then divide it into 3 parts and put them into 3 pieces of 1.2m 3 In the extraction tank, add 1000L water to the first tank, mix and extract at room temperature for 0.5-2.0 hours, and filter to obtain the filtrate. Then follow the operation procedure of 3-stage countercurrent extraction to carry out countercurrent immersion extraction operation sequentially, realize the reverse operation of the extraction phase and the raffinate phase through the reverse transfer of the extracted aqueous solution, contact mass transfer step by step, and finally extract the liquid from the first stage, that is, Sargassum It is discharged from the feeding tank, and the residue phase, that is, the extracted Sargassum extract residue, is discharged from the last stage, that is, the adding tank of the extracted water.

[0051] ②For the extract obtained in step ①, use plate-and-frame filter press or ce...

Embodiment 3

[0055] The composite seaweed iodized salt additive and potassium iodate obtained in the above-mentioned Examples 1 and 2 were added to table salt respectively according to the iodized salt production method, to prepare seaweed iodized salt and iodized salt containing potassium iodate.

[0056] Weigh 50g of two kinds of iodized salts respectively, put them into crucibles, conduct heating tests at 100°C and 250°C respectively, take samples at 15min, 30min, and 60min respectively, and measure the iodine content during the heating process according to the national standard GB10325.7 Loss rate, determine the iodine loss rate and thermal stability of seaweed iodized salt after heating. The experimental results are shown in Table 1 and Table 2 respectively.

[0057] Table 1 Comparison of heat loss rate between seaweed iodized salt and potassium iodate salt at 100°C

[0058] Table 2 Comparison of heat loss rate between seaweed iodized salt and potassium iodate salt at 250°C

[005...

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Abstract

The invention discloses an extraction method of algae iodate, and belongs to the fields of algae processing and food or feed additives. The method comprises the following steps: with brown alga as a raw material and water as an extracting liquid, carrying out multistage countercurrent extraction, carrying out vacuum concentration on the extracting liquid at 55-65 DEG C into a clear liquid, and stopping heating and concentrating when the specific gravity is 1.30-1.40; carrying out primary centrifugal separation when the clear liquid is hot to remove a high-temperature salt; cooling and removing a concentrated liquid of the high-temperature salt; carrying out secondary centrifugal separation, and removing excessive crude mannitol to obtain the concentrated liquid; and adding chitosan to remove heavy metal and arsenic in the concentrated liquid, and centrifuging, so as to obtain an algae iodate extracting liquid. The algae iodate extracted by the method is low in heavy metal content, and high in extraction rate; and meanwhile, a composite algae iodate salt additive prepared from the components such as algae iodate composite potassium iodide, potassium chloride and glutamic acid extracted by the method is good in heat stability.

Description

technical field [0001] The invention belongs to the field of seaweed processing and food or feed additives, and in particular relates to a method for extracting seaweed iodine and a compound seaweed iodine salt additive. Background technique [0002] Iodine is one of the essential trace elements for the human body. Iodine deficiency will seriously affect the body's material metabolism and growth and development, resulting in diseases such as endemic goiter, etc., and have an irreversible impact on human intellectual development. Iodine deficiency in pregnant women can lead to miscarriage, etc. Iodine deficiency in young children can also cause congenital psychological and physiological changes, leading to cretinism and so on. Patients with severe congenital iodine deficiency may even lose their fertility. There are a total of 129 countries in the world that have iodine deficiency problems. Iodized salt is the best way to prevent and treat iodine deficiency diseases. The pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B7/16A23L27/40A23L33/16
Inventor 陈学德李继明潘秀云
Owner YIYANTANG YINGCHENG HEALTH SALT MFG
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