Method for extracting algin through comprehensively utilizing brown algae

A technology of alginate and brown algae, applied in the fields of application, food preparation, food science, etc., can solve the problems of poor quality, low yield of alginate, large water consumption of alginate, etc., and achieve high yield, high degree of equipment automation, The effect of improving the overall utilization rate

Active Publication Date: 2011-05-18
江苏明月海洋生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a method for extracting alginate by comprehensive utilization of brown algae, which can solve the problems of large water cons

Method used

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  • Method for extracting algin through comprehensively utilizing brown algae
  • Method for extracting algin through comprehensively utilizing brown algae
  • Method for extracting algin through comprehensively utilizing brown algae

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Embodiment 1

[0039] refer to figure 1 with figure 2 As shown, a method for extracting alginate by comprehensive utilization of brown algae, the process steps include (1) soaking and cleaning; (2) adding soda ash for digestion; (3) dilution; (4) separation; (5) slag liquid extraction; (6) ) supernatant liquid extraction; step (4) adopts horizontal screw centrifuge, horizontal screw centrifuge comprises drum 1, has the feeding screw 2 of inner tube 21, feed pipe 3 that is communicated with feeding screw inner tube 21, The slag discharge port 11 and overflow port 12, the power unit 4 and the differential gear 5 are respectively located at the end of the drum 1; the conveying screw 2 is located inside the drum 1, and a separation cavity for material separation is formed between them 6. The feeding screw 2 is provided with a distributing port 7 for feeding the material entering from the feeding pipe 3 into the separation cavity 6 between the feeding screw 2 and the drum 1, driven by the power...

Embodiment 2

[0053] ①Soaking and cleaning: 1 ton of dried kelp, add 12m 3 Soak in tap water for 2.5 hours, after controlling the water, use a vegetable cutter to cut to about 10cm long, add 5m 3 After washing with tap water, control the water, and wash 3 times in this way;

[0054] ② Digestion: Control the water of the soaked kelp, put it into the digestion tank, add 3m 3 Tap water, stirring and adding 120kg of sodium carbonate, heating to 50°C for heat preservation and stirring for 3 hours for digestion reaction to obtain kelp digestion glue;

[0055] ③Dilution: Add tap water to the kelp digestive glue, stir and dilute until the Engler's viscosity is 160 seconds, and then dilute the digestive glue;

[0056] ④Separation: Use LW530 horizontal spiral centrifuge, set its processing capacity to 50m 3 / h, the addition of chitin flocculant with mass percent concentration of 0.3‰ is set to 1m 3 / h, the rotational speed of the drum is set to 2700r / min, the differential speed between the drum a...

Embodiment 3

[0062] ①Soaking and cleaning: 1 ton of dried macroalgae crushed particles, add 15m 3 Soak in tap water for 12 hours to swell completely, control water, add 5m 3 Wash with tap water and control the water, so wash 4 times;

[0063] ② Digestion with alkali: add the soaked macroalgae into the digestion tank, add 5m 3 Tap water, stir and add 200kg of sodium carbonate, heat to 60°C and keep warm, stir and digest for 10 hours to obtain macroalgae digested glue;

[0064] ③Dilution: add macroalgae digestive glue to tap water, stir and dilute to Engler's viscosity of 180 seconds, and then dilute the digestive glue;

[0065] ④Separation: Use LW530 horizontal screw centrifuge, set its processing capacity to 40m 3 / h, the addition of chitin flocculant whose mass percentage concentration is 1‰ is set to 3m 3 / h, the rotating speed of the drum is set at 2500r / min, and the differential speed of the drum and the feeding screw is set at 20r / min, and all the other are the same as the descrip...

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Abstract

The invention provides a method for extracting algin through comprehensively utilizing brown algae, which comprises the following process steps of: soaking and washing; adding sodium carbonate for digestion to obtain a digested glue solution; adding water to the digested glue solution and diluting to Engler viscosity of 110-200 seconds so as to obtain a diluted digested glue solution; separating and removing brown algae skin, silt and other impurities from the diluted digested glue solution with a horizontal spiral centrifuge to obtain a separating solution, and settling and floating the separating solution under the dissolved air foaming action of the centrifuge per se to obtain an upper floating slag solution and a lower clear solution; then extracting the upper floating slag solution to obtain algin rich in fibers; and directly extracting the lower clear solution or extracting after filtering with an added filter aid to obtain algin with different purities and qualities. Compared with the prior art, the method simplifies separation process, saves diluting water and improves the quality and the yield of the algin, and simultaneously can produce the algin rich in fibers as a byproduct. The method has cost advantage over comprehensive utilization.

Description

technical field [0001] The invention relates to a method for comprehensively preparing alginate by using brown algae as a raw material. Background technique [0002] Alginate is a general term for the sodium salt, potassium salt, calcium salt, magnesium salt and other products of alginic acid extracted from brown algae such as kelp, sargassum, macroalgae, and Ascophyllum nodosum. It can be used in food, textile, rubber, medicine, etc. Industrial auxiliaries. After brown algae are digested with alkali, the insoluble alginate in the algae is transformed into water-soluble sodium alginate, which contains insoluble algae components such as algae skin, sugar gum, fiber, sediment, and undigested brown algae residue. Separate and remove. In order to achieve the purpose of separation, it needs to be diluted with water. If the dilution concentration is too high, the liquid will have a high viscosity and cannot be air flotation; if the dilution concentration is low, it is conducive ...

Claims

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Application Information

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IPC IPC(8): C08B37/04A23L1/0532A23L1/308A23L33/21
Inventor 李同玉刘洪武安丰欣潘明亮黑雅各王建惠
Owner 江苏明月海洋生物科技有限公司
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