Method for preparing polysaccharide of defective porphyra haitanensis

A technology of seaweed polysaccharide and seaweed, which is applied in the field of preparation of inferior seaweed polysaccharide

Inactive Publication Date: 2011-07-27
SHANTOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the prior art, the extraction rates of these laver polysaccharide extraction and preparation methods are not high, all lower than 9%.

Method used

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  • Method for preparing polysaccharide of defective porphyra haitanensis
  • Method for preparing polysaccharide of defective porphyra haitanensis
  • Method for preparing polysaccharide of defective porphyra haitanensis

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Embodiment 1

[0017] Example 2

Embodiment 2

[0019] Hypoglycemic activity of almond laver polysaccharide prepared by the present invention

[0020] Alloxan was used to induce diabetes in mice. After the diabetes model was established in mice, porphyra polysaccharides were administered intragastrically at doses of 200, 300, and 400 (mg / kg bw), while the positive drug glibenclamide was used as a control (dose 20 mg / kg bw), to study the hypoglycemic activity of Porphyra laver polysaccharides, the results are shown in Tables 1, 2, and 3. The results showed that Porphyra polysaccharides could significantly reduce the blood sugar concentration of diabetic mice (p<0.05), and the blood sugar levels of mice in each administration group were close to those of the positive drug glibenclamide group; Oxidation ability T-AOC enhanced (p<0.05), antioxidant enzyme (SOD and GSH-Px) activity significantly increased (p<0.05), lipid peroxide malondialdehyde (MDA) content decreased significantly (p<0.05) . This shows that Porphyra polysacc...

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Abstract

The invention relates to a method for preparing polysaccharide of defective porphyra haitanensis. The invention aims to provide a method for preparing polysaccharide of defective porphyra haitanensis with high polysaccharide extraction efficiency, which comprises the following preparation steps: filling defective porphyra haitanensis, which is obtained after six harvests, dried, ground and sievedwith a 40-mesh sieve, into a container, adding ethanol, degreasing at 60 DEG C for 2 hours, adding pure water according to a material to liquid ratio of 1:50, treating in microwaves for 4 minutes, extracting in hot water at 100 DEG C for 2 hours to obtain polysaccharide extract, removing protein by a Savage method, concentrating, precipitating the polysaccharide in alcohol, dialyzing, freeze-drying under vacuum and obtaining the polysaccharide of porphyra haitanensis with an extraction rate of 10.81 percent.

Description

technical field [0001] The invention relates to a high-value utilization method of defective seaweed, in particular to a preparation method of defective algae polysaccharide. Background technique [0002] Porphyra haitanensis belongs to Rhodophyta (Rhodophyta), Bangiacease (Porphyra), and is one of the important economical seaweeds cultivated on a large scale in southern my country. Altar seaweed is a low-calorie nutritional health food with high dietary fiber, high protein and rich nutrition. Carbohydrates and proteins are the main components of Porphyra algae, and their contents account for 46.86%-49.27% ​​and 34.88%-37.21% of the dry mass of the algae, respectively. The contents of the two vary with the growth time and place. For example, from the first crop to the fifth crop, the protein increases by 5.5% and the carbohydrate (including polysaccharide) content decreases by 28.9%. Although the nutrient composition of altar laver increases with the increase of harvesting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/00
Inventor 陈美珍余杰徐景燕
Owner SHANTOU UNIV
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