Method for extracting low-molecular-weight kelp fucoidin

Abstract

The invention discloses a method for extracting low-molecular-weight kelp fucoidin, and belongs to the technical field of extraction of polysaccharide. The method for extracting the kelp fucoidin comprises the following steps: cell wall cracking, polysaccharide rough extraction, and polysaccharide extraction, separation and purification. The step of cell wall cracking is as follows: taking 10-16 parts by weight of fucus powder, soaking the fucus powder with anhydrous ethanol for degreasing, extracting solid residues with water under the condition that the solid-liquid ratio is 1: 10-15 m/V, stirring for 20-35 min, standing for 4-6 h in a sealed manner, adding active peptide, stirring for 5-8 min, carrying out steam blasting treatment, and maintaining pressure at 2-2.8 MPa for 30-40 S to obtain cell breakage liquid. The breakage rate of the kelp fucoidin is increased by the active peptide, the yield and purity of the fucoidin are improved, the extracted fucoidin is low in molecular weight, easy to absorb and good in anti-tumor and health-care effect, and the preparation cost of the fucoidin is low.

Description

Technical field [0001] The invention belongs to the technical field of polysaccharide extraction, and specifically relates to a method for extracting low molecular weight kelp fucoidan. Background technique [0002] my country is a major producer of kelp, and after decades of development, it has become the world's largest producer of kelp. According to statistics, China's seaweed production reached 1 million tons in 2009, of which kelp production accounted for more than 70% of the world's total production. It has become one of the important pillar industries of my country's marine economy, with huge social and economic benefits. Kelp is a nutrient-rich edible brown algae. Every 100g of kelp contains nutrients: 8.2g protein, 56.2g carbohydrate, 117mg calcium, 150mg iron, 25mg iodine, and also contains carotene, thiamine, riboflavin, Vitamins such as niacin. It is rich in nutrients, especially low-calorie, medium-protein, and high-mineral. It has edible functions such as helping...

AI Technical Summary

Problems solved by technology

In this invention, fucoidan is recovered from waste water by using green and environment-friendly ionic liquid. The amount of ionic liquid is small and can be reused. The amount of ethanol used in the recovery process is very small, which avoids the use of a large amount of ethanol in the prior art. The disadvantage of precipitating fucoidan, thus reducing the production cost, but the polysaccharide yield of this method still has room for further improvement