Production process for extracting agar from ahnfeltia plicata
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A production process, agar technology, applied in the field of agar extraction production process, can solve the problems of poor bleaching effect, low glue extraction rate, etc., to achieve stable product quality, high gel strength and gel yield, and simple process technology operation Effect
Inactive Publication Date: 2013-01-09
FUJIAN GOLD SWALLOW OCEAN BIOTECH +1
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Problems solved by technology
However, at present, the traditional method of producing agar from Gracilaria is still used to extract agar from Egnatia. Due to the difference in growth characteristics and physical and chemical properties, the traditional method is not suitable for extracting agar from Egnatia, and has poor bleaching effect and low glue extraction rate. And other issues
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Embodiment 1
[0030] A kind of production technology that extracts agar from Egouria, realizes by following steps:
[0031] 1. Wash and dry the body of Yigucao algae;
[0032] 2. Soak the algae in 20 times the weight of calcium hydroxide solution with a concentration of 20g / L at 100°C for 2 hours;
[0033] 3. Filter and wash the algae with water until the pH is about 8.5;
[0034] 4. Add 20 times the weight of distilled water to the algae at 100°C and a pressure of 0.3MPa, and carry out the first gel extraction for 6.5 hours;
[0035] 5. The mixed solution (the mixture of the algal body and the agar extract) is filtered with gauze to obtain the filtrate and the filter residue;
[0036] 6. Add 5g / L activated carbon to the filtrate while it is hot to decolorize the filtrate;
[0037] 7. Remove activated carbon by filtering while hot, the filtrate is colloid after cooling, and the colloid is sliced, frozen, dehydrated, dried, and pulverized to become primary agar;
[0038] 8. Use 20 times ...
Embodiment 2
[0044] A kind of production technology that extracts agar from Egouria, realizes by following steps:
[0045] 1. Wash and dry the body of Yigucao algae;
[0046] 2. Soak algae in 20 times the weight of sodium hydroxide solution with a concentration of 80g / L at 80°C for 2 hours;
[0047] 3. Filter and wash the algae with water until the pH is about 8.5;
[0048] 4. Add 20 times the weight of distilled water to the algae and carry out the first gel extraction for 2.0 hours at 100°C and a pressure of 0.6MPa;
[0049] 5. The mixed solution (the mixture of the algal body and the agar extract) is filtered with gauze to obtain the filtrate and the filter residue;
[0050] 6. Add 5g / L activated carbon to the filtrate while it is hot to decolorize the filtrate;
[0051] 7. Remove activated carbon by filtering while hot, the filtrate is colloid after cooling, and the colloid is sliced, frozen, dehydrated, dried, and pulverized to become primary agar;
[0052] 8. Use 15 times the wei...
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Abstract
The invention discloses a production process for extracting agar from ahnfeltia plicata. The production process is implemented by the following steps of: 1, washing and drying ahnfeltia plicata frond in the air; 2, soaking the frond by using alkali liquor; 3, filtering, and washing the frond with clean water; 4, adding distilled water into the frond and performing primary colloid extraction underincreased pressure; 5, filtering a mixed liquor to obtain filtrate and filter residue; 6, adding activated carbon into the filtrate for decoloring while hot; 7, filtering while hot, cooling the filtrate to obtain a colloid, and treating the colloid to form primary agar; 8, adding the alkali liquor into the frond, namely the filtrate residue, and performing secondary colloid extraction under the increased pressure; 9, filtering the secondarily extracted-mixed solution to obtain the filtrate and the filtrate residue; and 10, cooling the filtrate to obtain the colloid; and treating the colloid to obtain secondary agar. The agar extracted from the ahnfeltia plicata has various good performance indicators; a low-alkali pressurization process is utilized; the method is simple and easy to implement; the utilization value of the ahnfeltia plicata is improved; and good economic benefit is expected to obtain.
Description
technical field [0001] The present invention relates to the production process of agar, in particular to the production process of extracting agar from Egouria. Background technique [0002] Agar, also known as agar, frozen powder, etc., its main components are agarose and agar ester, which are polysaccharides extracted from seaweed. Agar is a hydrophilic colloid, which has the unique property of being able to form a fairly stable gel at a concentration as low as 0.3%. It is one of the most widely used seaweed gels in the world. It has a wide range of applications in many aspects such as chemical engineering and biological engineering. Agar can be further processed to obtain agarose. Agarose is a natural polysaccharide with high gel properties. As an excellent inert carrier and polymer sieve, it has been widely used in the separation of biological materials such as microbial proteins. Basic substances and important materials of modern bioengineering technology. According...
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Application Information
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