CN103319620A - Manufacturing process of carrageenan - Google Patents

Abstract

The invention discloses a manufacturing process of carrageenan. Seaweed is taken as a raw material for preparing the carrageenan. The manufacturing process specifically comprises the following process steps of: weighing the raw material, washing with water, cutting up, performing alkaline cleaning, washing with the water, digesting, filtering, cooling, adding a solvent for gelation, filtering, taking gel, extruding and drying. The manufacturing process disclosed by the invention has the advantages of high carrageenan yield, low consumption, simple and reasonable process and the like.

Description

The carrageenin manufacturing process

Technical field

The carrageenin manufacturing process.

Background technology

Carrageenin claims again carrageenin, carrageeman etc., mainly under red algae, obtain the kind marine algas such as Chondrus, Eucheuma, China fir Trentepohlia and husky Trentepohlia, it is widely used in the fields such as food, medicine, makeup with the form of gel or colloidal sol, the manufacture method of carrageenin mainly is that marine alga is extracted with hot water or hot sig water, perhaps with reusable heat water extraction after the lime treatment, extracting solution isopropanol precipitating, drying, obtain the carrageenin goods, in the carrageenin manufacturing process, can consume in a large number water and alkaline solution.

Summary of the invention

The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of glue yield rate high, consume less, the simple carrageenin manufacturing process of technique.

The present invention is achieved by the following technical solutions:

A kind of carrageenin manufacturing process, the concrete technology step is as follows:

1) washing shreds

Get marine alga, clean with clear water, be cut into fragment;

2) alkali cleaning

Soak marine alga with KOH, the stirring of heating, Heating temperature is 65 ℃, be 4 hours heat-up time;

3) washing

Water flushing after the alkaline purification, flushing is to neutral;

4) boiling

Add the deionized water boiling, amount of water is 20 times of marine alga, boiling for some time under the certain temperature.Boiling temperature is 85 ℃ ~ 90 ℃, and cooking time is 60 ~ 80 minutes;

5) filter cooling

After boiling is complete, filter with 200 mesh sieves while hot, the elimination algae-residue is cooled to room temperature;

6) solubilizing agent gel

Precipitate with alcohol or the KCl solution product to previous step, make the ordered conformation zone in the glue produce the glue connection and form gel;

7) cross the leaching gel;

8) extruding oven dry.

The present invention compared with prior art has following beneficial effect:

1. glue yield rate is high;

2. consume few;

3. technique advantages of simple.

Embodiment

Below in conjunction with specific embodiment technique content of the present invention is described further:

The below is take marine alga as raw material, the preparation carrageenin, and concrete scheme is: raw materials weighing → wash → shred → alkali cleaning → washing → boiling → filtration → cooling → solubilizing agent gel → filter → get gel → extruding → oven dry.

Concrete experimental procedure is as follows:

1. get the 10g marine alga, clean with clear water, be cut into fragment;

2. soak marine alga with KOH, heat and stir for some time, add alkali and can make wherein that the bad carrageenin (u-type, v-type) of gelation changes into preferably carrageenin (k-type, i-type) of gelation.Alkali for adding can add KOH, but also can add the mixing solutions of NaOH and KCl;

3. wash with a large amount of water after the alkaline purification, to neutral;

4. add deionized water (20 times of amount of water), boiling for some time under certain temperature.Concrete boiling temperature and time are undetermined, tentatively are decided to be 85 ℃ ~ 90 ℃, and temperature is too high can to affect later stage product color and gellifying property; Cooking time tentatively is decided to be 60 ~ 80 minutes; The purpose of boiling is to analyse glue, stirs in the digestion process to help colloid to separate out;

5. boiling complete after, filter with 200 mesh sieves while hot, the elimination algae-residue is cooled to room temperature;

6. precipitate with alcohol or the KCl solution product to previous step, principle is that carrageenin is insoluble in alcohol, thereby carrageenin is separated out; And KCl can make it saltout, and the mechanism of saltouing is that potassium ion serves as a connection and makes the ordered conformation zone in the glue produce the glue connection and form gel;

7. take out throw out, drying.

Claims (2)

1. carrageenin manufacturing process, it is characterized in that: the concrete technology step is as follows:

Washing shreds

Get marine alga, clean with clear water, be cut into fragment;

Alkali cleaning

Soak marine alga with KOH, the stirring of heating, Heating temperature is 65 ℃, be 4 hours heat-up time;

Washing

Water flushing after the alkaline purification, flushing is to neutral;

Boiling

Add the deionized water boiling, amount of water is 20 times of marine alga, at a certain temperature boiling for some time.

2. boiling temperature is 85 ℃ ~ 90 ℃, and cooking time is 60 ~ 80 minutes;

Filter cooling

After boiling is complete, filter with 200 mesh sieves while hot, the elimination algae-residue is cooled to room temperature;

The solubilizing agent gel

Precipitate with alcohol or the KCl solution product to previous step, make the ordered conformation zone in the glue produce the glue connection and form gel;

Cross the leaching gel;

The extruding oven dry.