CN100334968C - Preparation method of hairgvein agrimony poly saccharide gum - Google Patents

Abstract

The present invention discloses a preparation method for lucid ganoderma polysaccharide glue. The method mainly comprises the processes of pressurization, boiling and extraction for preparing the lucid ganoderma polysaccharide glue, and obtained products are lucid ganoderma polysaccharide glue powder and lucid ganoderma polysaccharide glue granules which have a favorable instant property. According to the needs of product applications, color elements can be reserved or completely removed through the control of the operation processes. Operation steps do not have chemical pollution to the environment, effectively active components are not destroyed, and the product mouth feel is favorable.

Description

Preparation method of celestial grass polysaccharide gum

technical field

The invention belongs to the technical field of food processing, and relates to a processing technology of a pure natural food coagulant with health care function, namely a preparation method of jelly grass polysaccharide gum.

Background technique

Mesona Blume (Mesona Blume), also known as fairy grass, jelly grass, firewood, etc., is an annual herb of the Labiatae family, and is a traditional medicinal and edible plant resource in my country. It is rich in polysaccharides, pigments (anthocyanidins) ursolic acid), hypotensive factor ursolic acid, oleanolic acid, aroma tree essence and sitosterol, sitosterol, sitosterol glucose and a variety of trace elements beneficial to the human body, which have the functions of improving human immunity, lowering blood pressure, lowering Health benefits such as blood sugar and tumor suppression.

After gelatinization, the jelly jelly polysaccharide gum and starch can form a very strong bond, and the material is tightly wrapped in the network structure to form a gel. This kind of gel has excellent elasticity and toughness, and its taste and quality are far superior to the currently commonly used gelling agents such as "sodium alginate", "gelatin", "carrageenan" and "konjac gum", and has a good market prospect.

At present, the preparation of jelly jelly polysaccharide gum mainly adopts alkaline extraction. But the lye extraction is not complete, it is easy to destroy its effective active ingredients, and produce a bad alkaline taste, increase the follow-up process, thereby increasing the cost.

The purpose of the present invention is to improve the preparation process of celestiaceae polysaccharide gum, without lye extraction, simplify the process, reduce production costs, and help protect the environment. The resulting product has good taste, good elasticity, and good texture. good.

Contents of the invention

The invention discloses a method for preparing jelly jelly polysaccharide gum by decocting under pressure.

The preparation method of grass jelly polysaccharide gum of the present invention comprises the following steps:

(1) After washing the raw material jelly grass leaves, use a colloid mill to pulverize them into superfine granular pretreatment materials;

(2) Calculated by weight, add 10 to 20 times the amount of clear water to the pretreated material, heat it to boiling in a multi-functional extraction tank, and boil it continuously for 0.5 to 3.5 hours under a steam pressure of 1 to 2Kpa;

(3) centrifuging the boiled and extracted material to remove slag, then plate and frame filtration, and the filtrate is imported into a settling tank;

(4) Add activated carbon for sugar to the filtrate, the amount added accounts for 0.5-1.5% of the total weight of the filtrate, stir at a temperature of 80-100°C for 30-60 minutes to make it evenly mixed, and the mixed solution is separated and decolorized in a decanter centrifuge , under the condition that the separation factor is greater than 9000, remove activated carbon and its attachments;

(5) Add emulsifier and stabilizer to the filtrate after decolorization as usual, mix the ingredients, and then spray dry with a spray dryer. Become grass jelly polysaccharide gum powder. Then the grass jelly polysaccharide gum powder is granulated into jelly grass polysaccharide gum particles with a particle diameter of about 2-10 mm.

The grass jelly polysaccharide gum powder and the grass jelly polysaccharide gum particles obtained by the method are two kinds of products obtained by the method of the present invention.

According to the requirements for the color of the grass jelly polysaccharide gum product, choose not to operate or perform multiple operations on step (4). If step (4) is not performed, the celestial grass polysaccharide gum product containing coffee pigment can be obtained; if step (4) is repeated until the filtrate is colorless and transparent, the celestial grass polysaccharide gum product without pigment can be obtained; according to the product The color and luster required by the application is selected for the number of operations of step (4).

Detailed ways

Selection of raw materials: It is best to use grass jelly that is only harvested once a year, and grass jelly that is harvested two to three crops a year has a lower sugar content. Grass jelly must be harvested after the pistils are all formed, and when they have just bloomed, the content of polysaccharides is higher at this time. From the harvested grass jelly, select non-rotten and disease-free jelly grass leaves and dry them in the sun, and store them properly to prevent mildew.

Embodiment one:

1. Select dry grass jelly leaves that are free from rot and disease, and rinse them with clean water to remove mud, sand and impurities.

2. Use a colloid mill to pulverize the washed grass jelly leaves into ultra-fine particles.

3. Put the above pretreated materials into a multi-functional extraction tank, add water in a weight ratio of 1:15, gradually heat to boiling, and continuously cook and extract for 1 hour under a steam pressure of 1.5Kpa.

4. Centrifuge the extracted stock solution to remove slag, then filter the plate and frame, and import the filtrate into the sedimentation tank.

5. Add 1% activated carbon for sugar in the filtrate, and stir at 90°C for 45 minutes to make it evenly mixed. Put the mixed solution into a decanter centrifuge for separation and decolorization, and remove activated carbon and its attachments under the condition that the separation factor is greater than 9000. Repeat this process until the juice is clear and transparent.

6. Add emulsifier, stabilizer and other ingredients to the filtrate to make slurry, and then send it to the spray dryer for spray drying. The spray drying inlet temperature is controlled at 180°C, and the outlet temperature is controlled at 70°C.

7. Put the spray-dried grass jelly polysaccharide gum powder into a boiling granulator for granulation until the particle diameter is about 2-10mm. Obtain the celestial grass polysaccharide gum granule product.

Embodiment two:

Add the washed jelly grass leaves to water at a ratio of 1:10, pulverize them in a colloid mill, boil and extract them continuously for 0.5 hours under a steam pressure of 1Kpa, and filter out the residue. Adding 0.5% activated carbon for sugar in the filtrate was stirred at 80° C. for 30 minutes to make it evenly mixed. The mixture is separated and decolorized once in a centrifuge to remove activated carbon and its attachments. The filtrate was spray-dried, the inlet temperature of the spray dryer was controlled at 150°C, and the outlet temperature was controlled at 60°C. The obtained grass jelly polysaccharide gum powder product is light yellow, and becomes light yellow granules after granulation.

Example three:

Add clean water to the washed jelly grass leaves at a ratio of 1:20, pulverize them in a colloid mill, boil and extract them continuously for 1.5 hours under a steam pressure of 2Kpa, filter and discard the residue, and spray-dry the filtrate. The inlet temperature of the spray dryer is controlled at 200°C , the outlet temperature is controlled at 80°C. The obtained grass jelly polysaccharide gum powder product is brown, and after granulation, it is brown granules.

Add the jelly grass polysaccharide gum particles of different colors prepared in the above example into 100 to 300 times the amount of feed liquid (fruit juice, milk, pudding, etc.), mix with 3 to 5 times the amount of edible starch, stir evenly and heat to 100 After ℃, cool naturally to form transparent or pigmented jelly or gel.

The jelly polysaccharide gum prepared by the invention has good elasticity, good texture, and chewability, and can be used as a gelling agent for jams, jellies, puddings, desserts, etc. in the food industry, and can also be used as a thickener for yogurt drinks, concentrated fruit juices, etc. agent, in order to improve the stability of the product, improve the taste, and has a good market prospect. In addition, the natural gel food made of grass jelly polysaccharide is cool and refreshing, tastes mellow, contains more water-soluble dietary fiber, and has health effects such as improving human immunity, lowering blood pressure, lowering blood sugar and inhibiting tumors. Natural health food glue.

The preparation of celestial grass polysaccharide gum by pressure cooking can increase the yield of the product and protect the active ingredients in the plant from damage; the color of the celestial grass liquid extracted by this method is lighter, which can reduce the amount of activated carbon used in the decolorization process , which is beneficial to reduce costs; non-alkali extraction simplifies the dealkalization process, which is beneficial to environmental protection, reduces costs and improves product palatability.

The jelly polysaccharide gel prepared by spray drying has a light specific gravity. When it is put into water at one time, the surface particles will form a gel layer due to water swelling, delaying and hindering the penetration of water molecules into the gel, forming an initial gel on the surface but dry inside. Large lumps of core. Through the secondary granulation technology, many fine particles are agglomerated into larger particles to form a bulky structure with large volume, large specific surface area, and many internal cavities, which is conducive to the dissolution of the product in water, thus effectively solving the problem of the product. instant solubility problem.

Claims (2)

1, the preparation method of grass jelly polysaccharide gum, is characterized in that following steps: (1) After washing the raw material jelly grass leaves, use a colloid mill to pulverize them into superfine granular pretreatment materials; (2) Calculated by weight, add 10 to 20 times the amount of clear water to the pretreated material, heat it to boiling in a multi-functional extraction tank, and boil it continuously for 0.5 to 3.5 hours under a steam pressure of 1 to 2Kpa; (3) centrifuging the boiled and extracted material to remove slag, then plate and frame filtration, and the filtrate is imported into a settling tank; (4) Add activated carbon for sugar to the filtrate, the amount added accounts for 0.5-1.5% of the total weight of the filtrate, stir at a temperature of 80-100°C for 30-60 minutes to make it evenly mixed, and the mixed solution is separated and decolorized in a decanter centrifuge , under the condition that the separation factor is greater than 9000, remove activated carbon and its attachments; (5) Add emulsifier and stabilizer to the filtrate after decolorization as usual, mix the ingredients, and then spray dry with a spray dryer. Chengxiancao polysaccharide gum powder; (6) Granulating the jellybean polysaccharide gum powder into jellybean polysaccharide gum granules with a particle diameter of about 2-10 mm. 2. The preparation method of the grass jelly polysaccharide gum according to claim 1, characterized in that: according to the requirements for the color of the grass jelly polysaccharide gum product, step (4) is selected not to be operated or to be operated multiple times.