CN101423561A - Method for reducing fresh water dosage during carrageenan extraction by eucheuma - Google Patents

Method for reducing fresh water dosage during carrageenan extraction by eucheuma Download PDF

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CN101423561A
CN101423561A CNA2008102186692A CN200810218669A CN101423561A CN 101423561 A CN101423561 A CN 101423561A CN A2008102186692 A CNA2008102186692 A CN A2008102186692A CN 200810218669 A CN200810218669 A CN 200810218669A CN 101423561 A CN101423561 A CN 101423561A
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eucheuma
seawater
gmel
fresh water
web
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CN101423561B (en
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蔡鹰
李思东
黄家康
杨磊
林宏图
彭少伟
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Guangdong Ocean University
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Guangdong Ocean University
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Abstract

The invention relates to a method for reducing the fresh water use amount when carrageenan is extracted by using eucheuma. According to the production process flow when the carrageenan is extracted by the eucheuma, the water use amount characteristic of each working procedure and the requirement on the production water, after the sea water is subjected to sand filtration, coagulation treatment and pH value adjustment, sea water is used to replace fresh water to perform production in the processes of eucheuma base process and bleaching so as to reduce the use amount of the fresh water. The method has apparent effect on reducing the fresh water use amount. When the powder carrageenan product is produced, the fresh water use amount can be reduced to 42.9 percent. The method has great significance to build a water-saving and environment-friendly society, improve the enterprise economic benefits, and guarantee the sustainable development of the enterprise and the society.

Description

Method with reducing fresh water dosage during carrageenan extraction by eucheuma
Technical field
The seawater that the invention belongs in the chemical treatment is used, and particularly reduces the method for fresh water dosage with carrageenan extraction by eucheuma.
Background technology
Carrageenin is widely used in food, medicine, group training, various microorganism detection and the scientific experiment.In producing with carrageenan extraction by eucheuma, need to consume a large amount of fresh water, 1 ton of Eucheuma muricatum (Gmel.) Web dry product of every processing needs about 110 tons of water consumptions.Freshwater resources are limited irreplaceable strategic resources, according to statistics, China per capita the fresh water amount only be the whole world per capita the fresh water amount about 1/4, become one of country of lack of water, especially China's Coastal Areas economy is comparatively flourishing, the density of population is high, and the situation of its lack of water is more severe; Most of maritime nations are actively accelerating the development and use seawater resources.Carrageenin manufacturing enterprise is owing to the reason of raw material is located at the coastland substantially, and the China's Coastal Areas seawater resources are very abundant, and the usage quantity of as far as possible using seawater, minimizing fresh water on producing just seems extremely important.Therefore, can consider to use seawater to come instead of part fresh water to produce according to the production technique and the water characteristics of carrageenan extraction by eucheuma, water-saving to building, environment-friendly type is social, improve the business economic benefit, Sustainable Development of Enterprises is significant.
Summary of the invention
The purpose of this invention is to provide a kind of method with reducing fresh water dosage during carrageenan extraction by eucheuma, the water characteristics of the technological process of production during according to carrageenan extraction by eucheuma and each operation reach the requirement to water of productive use, in alkaline purification, bleaching process, use seawater to replace fresh water to produce, reduce the usage quantity of fresh water effectively.
The present invention includes following steps:
(1) processing of seawater
With drawing up after the seawater that comes carries out sand filtration, coagulating treatment, add the hydrochloric acid adjust pH and between 6.0-6.5, be stored in the pond, standby;
(2) alkaline purification
Sodium hydroxide is added to the alkali lye that is made into 10-15% concentration in the seawater, in alkali lye, adds 1%KCl then, be heated to 60-65 ℃, add Eucheuma muricatum (Gmel.) Web and handled 12-16 hours;
(3) lixiviating
After the alkaline purification, clean to the pH6.5,, use freshwater soaking then instead 3-5 times, when pH is stabilized in 6.0-6.5, Eucheuma muricatum (Gmel.) Web is pulled out with sea water immersion 2 times with seawater;
(4) carry glue
With carrying glue in the Eucheuma muricatum (Gmel.) Web input boiling water of handling well, put forward the glue water consumption about 40-50 times, 30-40 minutes time; Glue filters, cools off, pushes away bar, and powder-like product is produced in press dewatering, drying, pulverizing, or produces the strip product in freezing 24-36 hours down at-18 ℃, thaws, puts bar then and dry.
It is apparent in view that the present invention reduces the fresh water dosage effect, when producing powdery carrageenin product, can reduce the fresh water usage quantity and reach 42.9%, water-saving to building, environment-friendly type is social, improves the business economic benefit, and enterprise and social sustainable development are significant.
Description of drawings
Fig. 1 is a production scheme of the present invention.
Embodiment
As shown in Figure 1,
To draw up after the seawater that comes carries out sand filtration, coagulating treatment, add hydrochloric acid and adjust the pH value of seawater between 6.0-6.5, inject the seawater after handling in the alkaline purification pond, sodium hydroxide is added the alkali lye that is made into 10---15%, in alkali lye, add 1%KCl then, be heated to 60-65 ℃, drop into Eucheuma muricatum (Gmel.) Web and handle after 12-16 hours, drain alkali lye.The seawater (with the fragrant plant mentioned in ancient texts dry weight basis, below identical) that adds 7 times soaks a little, draining after the stirring and washing, cleans to the pH6.5 with seawater, uses sea water immersion again 2 times, soaks about 1 hour at every turn, uses freshwater soaking then instead.When pH is stabilized in 6.0-6.5, finish the alkaline purification of Eucheuma muricatum (Gmel.) Web, it is pulled out, drop in 40 times the boiling water and carry glue, 30-40 minutes time; The glue that extracts filters, cools off, pushes away bar, press dewatering, drying, pulverizing (production powder-like product); Or descend to thaw, put in freezing 24-36 hours bar at-18 ℃ and dry (producing the strip product).
Carry out concrete test with Eucheuma muricatum (Gmel.) Web below
To draw up after the seawater that comes carries out sand filtration, coagulating treatment, add hydrochloric acid and adjust the pH value of seawater between 6.0-6.5, in the alkaline purification pond, inject 1.0 cubic metres of seawater after handling, sodium hydroxide is added the alkali lye that is made into 10---15%, in alkali lye, add 1%KCl then, be heated to 60-65 ℃, after handling 14 hours in 150 kilograms of Eucheuma muricatum (Gmel.) Webs input alkaline purification ponds, drain alkali lye.Add seawater and soak, stir the back draining a little,, to pH6.5, use sea water immersion again 2 times, soak about 1 hour at every turn, use freshwater soaking then instead through repeated washing.When pH is stabilized in 6.0-6.5, Eucheuma muricatum (Gmel.) Web is pulled out, drop in 6 cubic metres of boiling water and carry glue, 35 minutes time; Glue filters, cools off, pushes away bar, and powdered carrageenin product is produced in press dewatering, drying, pulverizing; Or at-18 ℃ times freezing 30 hours, thaw, put bar then to dry, produce the carrageenin product of strip.
The water consumption situation that seawater replaces fresh water processing to produce *
Figure A200810218669D00051
Calculate to handle 1 ton of Eucheuma muricatum (Gmel.) Web dry product, produce powder-like product.
In the whole production flow process, the water consumption production powder-like product that replaces fresh water processing to handle 1 ton of Eucheuma muricatum (Gmel.) Web dry product with seawater utilizes 48 cubic metres in seawater, reduces the fresh water usage quantity and reaches 42.9%.Add enterprise with the production of China's Coastal Areas carrageenan extraction by eucheuma and calculate, can save a large amount of fresh water every year, and business economic benefit and social benefit are all very outstanding, and enterprise and social Sustainable development are significant.

Claims (1)

1, a kind of method with reducing fresh water dosage during carrageenan extraction by eucheuma is characterized in that comprising the steps:
(1) processing of seawater
After seawater carried out sand filtration, coagulating treatment, add hydrochloric acid and adjust the pH value, pH is stablized between 6.0-6.5;
(2) utilize seawater that Eucheuma muricatum (Gmel.) Web is carried out alkaline purification
Sodium hydroxide is added to is made into alkali lye in the seawater, concentration adds KCl then in alkali lye between 10-15%, and consumption is heated to 60-65 ℃ in 0.8~1.2% scope, adds Eucheuma muricatum (Gmel.) Web and handles 12-16 hours;
(3) utilizing seawater to carry out lixiviating cleans
After Eucheuma muricatum (Gmel.) Web carries out alkaline purification, clean pH to the Eucheuma muricatum (Gmel.) Web scavenging solution about 6.5,, use freshwater soaking then instead 3-5 times, make pH be stabilized in 6.0-6.5, Eucheuma muricatum (Gmel.) Web is pulled out with sea water immersion 2 times with seawater;
(4) carry glue
With carrying glue in the Eucheuma muricatum (Gmel.) Web input boiling water of handling well, put forward the glue water consumption about 40-50 times, 30-40 minutes time; Glue filters, cools off, pushes away bar, and powder-like product is produced in press dewatering, drying, pulverizing, or produces the strip product in freezing 24-36 hours down at-18 ℃, thaws, puts bar then and dry.
CN2008102186692A 2008-10-22 2008-10-22 Method for reducing fresh water dosage during carrageenan extraction by eucheuma Expired - Fee Related CN101423561B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101983973A (en) * 2010-10-08 2011-03-09 青岛聚大洋海藻工业有限公司 Extracting and processing technique of carrageen
CN102180988A (en) * 2011-04-15 2011-09-14 江南大学 Method for preparing k-carrageenan with high gel strength from eucheuma
CN102344499A (en) * 2010-07-30 2012-02-08 中国科学院海洋研究所 Method for preparing Iota-carrageenan
CN102633902A (en) * 2012-05-03 2012-08-15 临沂艾德森生物科技有限公司 Carrageenan liquid/jelly, and preparation method and use method thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102344499A (en) * 2010-07-30 2012-02-08 中国科学院海洋研究所 Method for preparing Iota-carrageenan
CN102344499B (en) * 2010-07-30 2013-03-20 中国科学院海洋研究所 Method for preparing Iota-carrageenan
CN101983973A (en) * 2010-10-08 2011-03-09 青岛聚大洋海藻工业有限公司 Extracting and processing technique of carrageen
CN102180988A (en) * 2011-04-15 2011-09-14 江南大学 Method for preparing k-carrageenan with high gel strength from eucheuma
CN102180988B (en) * 2011-04-15 2012-12-05 江南大学 Method for preparing k-carrageenan with high gel strength from eucheuma
CN102633902A (en) * 2012-05-03 2012-08-15 临沂艾德森生物科技有限公司 Carrageenan liquid/jelly, and preparation method and use method thereof
CN102633902B (en) * 2012-05-03 2013-01-30 临沂艾德森生物科技有限公司 Carrageenan liquid/jelly, and preparation method and use method thereof

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