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Method for preparing various products by separating kelp components and fully using biomass

A biomass and kelp technology, applied in the preparation of hydroxyl compounds, the preparation of organic compounds, food preparation and other directions, can solve the problems of high energy consumption, achieve the effect of good economic prospects and shorten the digestion time

Inactive Publication Date: 2012-07-04
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] [Purpose of the present invention] The purpose of the present invention is to provide a clean and efficient method for the separation and polygeneration of kelp components to prepare sodium alginate, etc. product method

Method used

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  • Method for preparing various products by separating kelp components and fully using biomass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Pretreatment: Wash the fresh kelp with water to remove the sand and cut it into 3-15cm sections;

[0021] (2) steam explosion treatment: carry out steam explosion treatment to the pretreated kelp under 0.6MPa pressure for 5 minutes;

[0022] (3) Digestion: the steam-exploded kelp is digested with 1% sodium carbonate solution 10 times (m / V, g / ml) relative to the dry weight of the kelp, the digestion temperature is 40°C, and the digestion time is 2h;

[0023] (4) Centrifugation: After digestion, add water 20 times (m / V, g / ml) relative to the dry weight of kelp to dilute, and use a tubular centrifuge to centrifuge at a speed of 15000r / min to achieve kelp digested slag and the above Separation of supernatant liquid;

[0024] (5) The kelp digestion residue after centrifugation is mainly kelp fiber, bleached with 0.8% hydrogen peroxide relative to the dry weight of the solid phase material 10 times (m / V, g / ml), the bleaching time is 40min, and the temperature is 35°C. A...

Embodiment 2

[0031] (1) Pretreatment: soak the dried kelp for 1-2 hours, wash off the sand and cut it into 3-15cm sections;

[0032] (2) steam explosion treatment: carry out steam explosion treatment to the pretreated kelp under 0.9MPa pressure for 9 minutes;

[0033] (3) Digestion: the kelp after steam explosion is digested with 2% sodium carbonate solution relative to the dry weight of kelp 14 times (m / V, g / ml), the digestion temperature is 50°C, and the digestion time is 1h;

[0034] (4) Centrifugation: After digestion, add water 13 times (m / V, g / ml) relative to the dry weight of kelp to dilute, and use a tube centrifuge to centrifuge at a speed of 8000r / min to achieve the digestion of kelp and the above Separation of supernatant liquid;

[0035] (5) The kelp digestion residue after centrifugation is mainly kelp fiber, bleached with 2% hydrogen peroxide relative to the dry weight of the solid phase material 12 times (m / V, g / ml), the bleaching time is 20min, and the temperature is 40°C....

Embodiment 3

[0042] (1) Pretreatment: soak the dried kelp for 1 hour, wash off the sand and cut it into 3-15cm sections;

[0043] (2) steam explosion treatment: carry out steam explosion treatment to the kelp after pretreatment under 1.5MPa pressure maintenance pressure 2min;

[0044] (3) Digestion: the kelp after steam explosion is digested with 1.5% sodium carbonate solution relative to the dry weight of kelp 15 times (m / V, g / ml), the digestion temperature is 40°C, and the digestion time is 1h;

[0045] (4) Centrifugation: After digestion, add water 10 times (m / V, g / ml) relative to the dry weight of kelp to dilute, and use a tubular centrifuge to centrifuge at a speed of 14000r / min to achieve the digestion of kelp. Separation of supernatant liquid;

[0046] (5) The kelp digestion residue after centrifugation is mainly kelp fiber, bleached with 0.7% hydrogen peroxide relative to the dry weight of the solid phase material 20 times (m / V, g / ml), the bleaching time is 50min, and the temperat...

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Abstract

The invention provides a method for preparing sodium alga acid, dietary fiber, pigment, iodine and mannite by separating kelp components, which saves water and energy, and aims to solve the problems of large water consumption, high intensity of labour and the like for separating products of sodium alga acid and the like from the kelp in the traditional method. The method comprises the following steps of: firstly cleaning to remove sand on the surface of the kelp, cutting the kelp, tearing and crashing the kelp by a gas-explosive process, and then digesting with sodium carbonate solution, separating solid and liquid with a tubular centrifuger, preparing dietary fiber by using solid slag, precipitating the sodium alga acid in the liquid components with calcium chloride , and separating thepigment, the iodine and the mannite by using methods of ultrafiltration, electrodialysis and the like. Compared with the traditional method, the method for extracting the sodium alga acid can save water by 30%-50%, save energy by 20%-30%, avoid the process of fixing color by using toxicant formaldehyde, shorten the digesting time, simultaneously co-produce various products, realize full-utilization of each component of the kelp and improve the economical value of the kelp.

Description

technical field [0001] The invention belongs to the field of utilization of kelp resources, and in particular relates to a method for preparing various products such as sodium alginate by fully utilizing the separated biomass of kelp components. technical background [0002] my country faces the sea in the east and has a vast sea area, which can vigorously develop kelp biomass resources. Kelp processed products are very rich, such as sodium alginate, iodine and mannitol, kelp dietary fiber, etc. Among them, sodium alginate is famous for its good biodegradability And biocompatibility, it is widely used in textile, medicine, food, chemistry, biology and other fields; iodine is an indispensable trace element for human growth and development; mannitol can be used in food, medical plastics and other industries. The traditional kelp processing method is outdated, consumes a lot of water and energy, and lacks deep processing technology, which can no longer meet the needs of my count...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L1/337A23L1/28A23L1/308C09B61/00C07C31/26C07C29/86C08B37/04A23L33/21
Inventor 陈洪章彭小伟
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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