Method for comprehensively utilizing and processing gracilaria

A processing method and technology of Gracilaria, applied in the field of comprehensive utilization of Gracilaria, can solve the problems of polluting the environment, wasting resources, etc.

Inactive Publication Date: 2011-08-17
FISHERIES RES INST OF FUJIAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to only extract the agar in the algae for the existing method for extracting the glue from Gracilaria, and the phycoerythrin and the cellulose in the algae are all discharged into the sea as sewage and rubbish or transported to

Method used

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  • Method for comprehensively utilizing and processing gracilaria
  • Method for comprehensively utilizing and processing gracilaria

Examples

Experimental program
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Example Embodiment

[0026] Example 1

[0027] 1) Adjust the pH value of Gracilaria (material-to-liquid ratio 1:10) to 7, add 3% papain by weight of Gracilaria, adjust the temperature to 40°C and hydrolyze for 8 hours, filter, and heat the filtrate to 80°C for 20 minutes to make The enzyme is inactivated, and then concentrated and spray-dried to obtain the phycoerythrin polypeptide. The physical and chemical indicators of the product are water 10.8%, protein 87.2%, fat 1.3%, and hygienic indicators comply with GB 19643-2005 "Algae Products Hygienic Standard".

[0028] 2) Add the residue obtained in step 1) to a 6% NaOH solution of 3 times the wet weight of the residue, adjust the temperature to 90°C for 3 hours, and then bleach it with an allowable bleaching agent. After bleaching, add 8 times the total mass of the original Gracilaria , Heat up to 95 ℃ to boil the gum for 4 hours, then use a plate and frame filter press to filter, the filtrate is coagulated and chopped and then dewatered by an oil pres...

Example Embodiment

[0031] Example 2

[0032] 1) Adjust the pH value of Gracilaria (material-to-liquid ratio 1:12) to 9, add 4% by mass of Gracilaria trypsin, adjust the temperature to 38°C and hydrolyze for 7 hours, filter, and heat the filtrate to 80°C for 20 minutes to make Enzymes are inactivated, and then concentrated and spray-dried to obtain phycoerythrin peptides. The physical and chemical indicators of the product are 9.8% moisture, 88.0% protein, and 11% fat. The hygienic indicators comply with GB 19643-2005 "Algae Products Hygienic Standards".

[0033] 2) Add the residue obtained in step 1) into a 7% NaOH solution of 4 times the wet weight of the residue, adjust the temperature to 95°C for 2.5 hours, and then bleach it with an allowable bleaching agent. After bleaching, add 10 times the total mass of the original Gracilaria Heat the water to 90℃ and boil the gum for 5h, then filter it with a plate and frame filter press. The filtrate is coagulated and chopped, then squeezed and dehydrated b...

Example Embodiment

[0035] Example 3

[0036] 1) Adjust the pH value of Gracilaria (material-liquid ratio 1:14) to 8, add 4.5% by mass of Gracilaria subtilisin, adjust the temperature to 42℃, hydrolyze for 9h, filter, and heat the filtrate to 80℃ for 20min The phycoerythrin polypeptide is obtained by inactivating the enzyme, and then concentrating and spraying drying; the physical and chemical indicators of the product are 9.0% moisture, 89.0% protein, and 11% fat. The hygienic indicators comply with GB 19643-2005 "Algae Products Hygienic Standard".

[0037] 2) Add the residue obtained in step 1) to an 8% NaOH solution of 4.5 times the wet weight of the residue, adjust the temperature to 90°C for 3.0 hours, and then bleach it with an allowable bleaching agent. After bleaching, add 12 times the total mass of the original Gracilaria Heat the water to 95℃ to boil the gum for 4.5h, and then filter it with a plate and frame filter press. The filtrate is coagulated and chopped, then squeezed and dehydrated ...

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Abstract

A method for comprehensively utilizing and processing asparagus relates to comprehensive utilization of gracilaria. The invention provides a method for comprehensively utilizing and processing gracilaria, through which phycoerythrin polypeptide, agaragar and seaweed insoluble dietary fiber can be obtained simultaneously. The method comprises the following steps: water is added into gracilaria, then protease is added for hydrolization, filtering is performed, the temperature of the filtrate is increased to deactivate enzyme, and phycoerythrin polypeptide and residue are obtained through concentration and spray drying; the obtained residue is treated with aqueous alkali to remove sulfate radical contained in agaragar in the residue, the residue is bleached and water-washed to be neutral, then water is added to boil agaragar, the frond and the agaragar liquid are roughly filtered, and after the rough filtrate is filter-pressed, solidified, chipped, dehydrated through squeezing, dried andcrushed, powdery agaragar and frond residue are obtained; after the frond residue is dehydrated through squeezing and dried, seaweed insoluble dietary fiber can be obtained.

Description

technical field [0001] The invention relates to the comprehensive utilization of Gracilaria (also known as asparagus), in particular to a new comprehensive utilization method for simultaneously extracting phycoerythrin polypeptide, agar and seaweed insoluble dietary fiber from Gracilaria. Background technique [0002] At present, Gracilaria is mostly used as a raw material for extracting agar gum, except that it is partially used as abalone feed. At present, most of the techniques for extracting agar from Gracilaria are to use medium-alkali high-temperature method to remove sulfate radicals, then bleach and wash to neutrality, and then directly extract the agar with hot water. This traditional gel extraction method only extracts the agar in the algae, and the phycoerythrin and cellulose in the algae are discharged into the sea as sewage and garbage or transported to the garbage dump for incineration, wasting resources and polluting the environment. Therefore, how to make th...

Claims

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Application Information

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IPC IPC(8): A23J1/00C08B37/12A23L1/337A23L1/308A23L17/60
Inventor 许永安
Owner FISHERIES RES INST OF FUJIAN
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