阅读说明：本技术 一种复配增稠剂及其制备工艺 (Compound thickener and preparation process thereof ) 是由 刘俩德 周教德 温菊芳 吴千红 于 2019-12-11 设计创作，主要内容包括：本发明涉及腌制水产品添加剂制备技术领域,更具体地说它涉及一种复配增稠剂及其制备工艺；其原料按质量份包括：羧甲基纤维素钠1.2-1.6份、聚丙烯酸钠20-25份、三聚磷酸钠25-30份、柠檬酸1.0-1.5份、魔芋粉0.8-1.3份、褐藻酸钠1.1-1.5份、麦芽糊精50-58份、海藻酸钠3.2-3.8份、罗望子胶2.8-3.6份、黄蓍胶1.5-1.9份、添加剂1.8-2.5份、辅料2.0-2.5份和蜜冬瓜皮提取物7.8-8.5份；本发明制备的复配增稠剂不仅具有很好的增稠作用,还具有很好的促进血液循环和护肝养肝等药用价值；再者,其能提高增稠剂的耐酸性和保水性,显著改善腌制水产品的口感。(The invention relates to the technical field of preparation of additives for pickled aquatic products, in particular to a compound thickener and a preparation process thereof; the raw materials comprise the following components in parts by mass: 1.2-1.6 parts of sodium carboxymethylcellulose, 20-25 parts of sodium polyacrylate, 25-30 parts of sodium tripolyphosphate, 1.0-1.5 parts of citric acid, 0.8-1.3 parts of konjac flour, 1.1-1.5 parts of sodium alginate, 50-58 parts of maltodextrin, 3.2-3.8 parts of sodium alginate, 2.8-3.6 parts of tamarind gum, 1.5-1.9 parts of tragacanth, 1.8-2.5 parts of additives, 2.0-2.5 parts of auxiliary materials and 7.8-8.5 parts of honey white gourd peel extract; the compound thickener prepared by the invention not only has good thickening effect, but also has good medicinal values of promoting blood circulation, protecting and nourishing liver and the like; in addition, the acid resistance and the water retention of the thickening agent can be improved, and the mouthfeel of the pickled aquatic products is obviously improved.)

1. The compound thickener is characterized by comprising the following raw materials in parts by mass: 1.2-1.6 parts of sodium carboxymethylcellulose, 20-25 parts of sodium polyacrylate, 25-30 parts of sodium tripolyphosphate, 1.0-1.5 parts of citric acid, 0.8-1.3 parts of konjac flour, 1.1-1.5 parts of sodium alginate, 50-58 parts of maltodextrin, 3.2-3.8 parts of sodium alginate, 2.8-3.6 parts of tamarind gum, 1.5-1.9 parts of tragacanth, 1.8-2.5 parts of additives, 2.0-2.5 parts of auxiliary materials and 7.8-8.5 parts of honey white gourd peel extract.

2. The compound thickener according to claim 1, which is characterized in that: the additive is one of sodium succinate and disodium 5' -guanylate.

3. The compound thickener according to claim 1, which is characterized in that: the auxiliary material is one of sucrose and glucose.

4. The compound thickener according to claim 1, wherein the preparation method of the white gourd peel extract comprises the following steps:

a. cleaning the prepared white gourd peel with clear water, and cutting into pieces, wherein the length of the tuber is 2cm, and the width of the tuber is 2 cm; then soaking the cut white gourd peel blocks in hot water at the temperature of 80-90 ℃ for 25-40min to obtain a mixed solution;

b. adding a proper amount of solid particles into the mixed solution obtained in the step a, adjusting the pH of the mixed solution to 1.5-3.0 with acid liquor, and then heating the mixed solution in a water bath kettle at the heating temperature of 70-85 ℃ for 30-40min to obtain a mixed component;

c. b, adding a proper amount of enzyme preparation into the mixed components obtained in the step b, then ultrasonically mixing for 5-10min, and soaking the mixed components in water bath for 2-4h at the temperature of 30-36 ℃; after soaking, setting the water temperature to be 75-85 ℃, soaking for 20-30min at the temperature, and then cooling to room temperature under natural conditions;

d. c, adding a proper amount of saccharifying enzyme into the filtrate obtained in the step c, heating the mixture in a water bath at the temperature of 60-75 ℃ for 3-5 hours, taking out the mixture, boiling the mixture, naturally cooling the mixture to room temperature, carrying out suction filtration treatment, and placing the obtained filtrate in a constant-temperature drying oven for drying and concentrating to one third of the original volume;

e. adjusting the pH value of the concentrated solution obtained in the step d to 2.0-3.0, adding an ethanol solution with the volume of 4-6 times of that of the concentrated solution into the concentrated solution, then placing the concentrated solution into a refrigerator for standing and extracting for 4-6h, wherein the temperature in the refrigerator is set to be 3-6 ℃, finally taking out the concentrated solution and pouring out the supernatant, and drying the obtained precipitate at the temperature of 50-55 ℃ to obtain solid powder, namely the honey white gourd peel extract.

5. The compound thickener according to claim 4, which is characterized in that: in the step b, the solid particles are selected from one of sodium citrate and potassium citrate, and the addition amount of the solid particles is 1.2-1.6% of the mass of the mixed solution.

6. The compound thickener according to claim 4, which is characterized in that: and in the step b, hydrochloric acid solution with the concentration of 1.5-2.5mol/L is selected as the acid solution.

7. The compound thickener according to claim 4, which is characterized in that: in the step c, the enzyme preparation is formed by mixing cellulase and pectinase according to the mass ratio of 2-4:1, and the addition amount of the enzyme preparation is 1.8-2.5% of the mass of the mixed components.

8. The compound thickener according to claim 1, which is characterized in that: the adding amount of the saccharifying enzyme in the step d is 2.5-3.0% of the mass of the mixed solution in the step c.

9. A preparation process of the compound thickener according to any one of claims 1 to 8, which is characterized by comprising the following steps:

s1, sequentially placing sodium carboxymethylcellulose, sodium polyacrylate, sodium tripolyphosphate, citric acid, konjac flour, sodium alginate and maltodextrin in a container, mechanically stirring at the speed of 100-180r/min for 10-20min to uniformly mix and stir the raw materials, and storing the obtained first mixed material for later use;

s2, adding tamarind gum, tragacanth gum and adjuvants into another container, stirring at 60-120r/min for 10-15min, stirring, and storing; the obtained mixture is marked as a second mixed material;

s3, respectively adding sodium alginate, an additive and a honey white gourd peel extract into a container, stirring at a speed of 60-120r/min for 10-15min, mechanically stirring uniformly to obtain a third mixed material, and storing the third mixed material for later use;

s4, mixing the first mixed material, the second mixed material and the third mixed material obtained in the steps S1, S2 and S3 respectively, stirring at the speed of 120-180r/min for 10-15min, uniformly stirring, and sieving to obtain the finished product of the compound thickening agent.

10. The preparation process of the compound thickener according to claim 9, which is characterized in that; the aperture of the screen in the step S4 is 200-300 meshes.

Technical Field

The invention relates to the technical field of preparation of additives for pickled aquatic products, in particular to a compound thickener and a preparation process thereof.

Background

The thickener is an additive for the pickled aquatic products, is mainly used for improving and increasing the viscosity of the pickled aquatic products, maintaining the color, the fragrance, the taste and the stability of the fluid pickled aquatic products and the jelly pickled aquatic products, improving the physical properties of the pickled aquatic products and enabling the pickled aquatic products to have a smooth and palatable feeling. The thickening agent can improve the viscosity of the pickled aquatic products or form gel, thereby changing the physical properties of the pickled aquatic products, endowing the pickled aquatic products with sticky and moist and proper mouthfeel, and having the functions of emulsification, stability or suspension, and the number of the currently approved thickening agents in China is 39. Thickeners are all hydrophilic high molecular compounds, also known as hydrosols. They can be divided into two main categories, natural and chemical (including semi-synthetic) according to their origin.

At present, thickening agents are frequently used in the process of pickling aquatic products to improve the taste of the pickled aquatic products, and although the commercial thickening agents can improve the taste of the pickled aquatic products to a certain extent, the effect is not particularly remarkable. Furthermore, it has no medicinal value in itself.

Disclosure of Invention

Aiming at the defects in the prior art, the first purpose of the invention is to provide a compound thickener, which has the advantages that: it not only has good thickening effect, but also has good medicinal values of promoting blood circulation, protecting and nourishing liver, etc. In addition, the acid resistance and the water retention of the thickening agent can be improved, and the mouthfeel of the pickled aquatic products is obviously improved.

In order to achieve the purpose, the invention provides the following technical scheme:

the compound thickener comprises the following raw materials in parts by mass: 1.2-1.6 parts of sodium carboxymethylcellulose, 20-25 parts of sodium polyacrylate, 25-30 parts of sodium tripolyphosphate, 1.0-1.5 parts of citric acid, 0.8-1.3 parts of konjac flour, 1.1-1.5 parts of sodium alginate, 50-58 parts of maltodextrin, 3.2-3.8 parts of sodium alginate, 2.8-3.6 parts of tamarind gum, 1.5-1.9 parts of tragacanth, 1.8-2.5 parts of additives, 2.0-2.5 parts of auxiliary materials and 7.8-8.5 parts of honey white gourd peel extract.

By adopting the technical scheme, the candied white gourd peel is rich in sugar, protein, B vitamins (B1, B2 and B6), vitamin C, mineral substances, fatty oil and the like. The saccharides, proteins, fatty oils, minerals and vitamins in the jackfruit have a certain effect on maintaining the normal physiological functions of the body. The honey white gourd peel extract prepared by the chemical extraction method is added into the compound thickener, so that the compound thickener not only has good thickening effect, but also has good medicinal values of promoting blood circulation, protecting and nourishing liver and the like.

The invention is further configured to: the additive is one of sodium succinate and disodium 5' -guanylate.

By adopting the technical scheme, the sodium succinate or the 5 '-guanylic acid disodium are selected as the additive, so that the sodium succinate or the 5' -guanylic acid disodium can play a role of a flavoring agent, and the flavor of the pickled aquatic product is improved. In addition, the preserved aquatic product preservative also has a certain preservation effect, so that the preservation time of the preserved aquatic product is effectively prolonged.

The invention is further configured to: the auxiliary material is one of sucrose and glucose.

By adopting the technical scheme, the tamarind gum and the auxiliary materials are compatible with each other to play a good thickening role, the stability of the thickener is good, the thickening performance of the prepared thickener is different when the blending proportion of the tamarind gum and the auxiliary materials is different, and the purpose of adjusting the thickening performance of the thickener can be realized.

The invention is further configured to: the preparation method of the white gourd peel extract comprises the following steps: a. cleaning the prepared white gourd peel with clear water, and cutting into pieces, wherein the length of the tuber is 2cm, and the width of the tuber is 2 cm; then soaking the cut white gourd peel blocks in hot water at the temperature of 80-90 ℃ for 25-40min to obtain a mixed solution;

b. adding a proper amount of solid particles into the mixed solution obtained in the step a, adjusting the pH of the mixed solution to 1.5-3.0 with acid liquor, and then heating the mixed solution in a water bath kettle at the heating temperature of 70-85 ℃ for 30-40min to obtain a mixed component;

c. b, adding a proper amount of enzyme preparation into the mixed components obtained in the step b, then ultrasonically mixing for 5-10min, and soaking the mixed components in water bath for 2-4h at the temperature of 30-36 ℃; after soaking, setting the water temperature to be 75-85 ℃, soaking for 20-30min at the temperature, and then cooling to room temperature under natural conditions;

d. c, adding a proper amount of saccharifying enzyme into the filtrate obtained in the step c, heating the mixture in a water bath at the temperature of 60-75 ℃ for 3-5 hours, taking out the mixture, boiling the mixture, naturally cooling the mixture to room temperature, carrying out suction filtration treatment, and placing the obtained filtrate in a constant-temperature drying oven for drying and concentrating to one third of the original volume;

e. adjusting the pH value of the concentrated solution obtained in the step d to 2.0-3.0, adding an ethanol solution with the volume of 4-6 times of that of the concentrated solution into the concentrated solution, then placing the concentrated solution into a refrigerator for standing and extracting for 4-6h, wherein the temperature in the refrigerator is set to be 3-6 ℃, finally taking out the concentrated solution and pouring out the supernatant, and drying the obtained precipitate at the temperature of 50-55 ℃ to obtain solid powder, namely the honey white gourd peel extract.

By adopting the technical scheme, the extracted honey white gourd peel extract is used as a raw material for preparing the thickening agent, wherein the honey white gourd peel extract not only has good thickening effect, but also has good medicinal values of promoting blood circulation, protecting liver, nourishing liver and the like.

The invention is further configured to: in the step b, the solid particles are selected from one of sodium citrate and potassium citrate, and the addition amount of the solid particles is 1.2-1.6% of the mass of the mixed solution.

By adopting the technical scheme, the sodium citrate or the potassium citrate can be used for curing Ca in the aquatic product²⁺、Mg²⁺The plasma ions have good complexing ability, so that the rotting rate of the pickled aquatic products can be effectively slowed down. In addition, the seasoning can also play a role in thickening and improving the flavor of the pickled aquatic products.

The invention is further configured to: and in the step b, hydrochloric acid solution with the concentration of 1.5-2.5mol/L is selected as the acid solution.

By adopting the technical scheme, the purpose of adjusting the pH of the mixed liquid can be achieved by using the 1.5-2.5mol/L hydrochloric acid solution, beneficial components in the honey white gourd skins can flow into the mixed liquid to the maximum extent, and the extraction of a component in the honey white gourd skins is facilitated.

The invention is further configured to: in the step c, the enzyme preparation is formed by mixing cellulase and pectinase according to the mass ratio of 2-4:1, and the addition amount of the enzyme preparation is 1.8-2.5% of the mass of the mixed components.

By adopting the technical scheme, the cell walls in the white gourd peel are sufficiently enzymolyzed by using the enzyme preparation, the white gourd peel cells are exposed in the mixed components, and then under the action of ultrasonic mixing treatment, the white gourd peel cells are sufficiently crushed, and beneficial components in the cells sufficiently flow out, so that the extraction efficiency of the white gourd peel is improved.

The invention is further configured to: the adding amount of the saccharifying enzyme in the step d is 2.5-3.0% of the mass of the mixed solution in the step c.

By adopting the technical scheme, the starch in the honey white gourd peel extracting solution obtained in the step c is effectively hydrolyzed by the saccharifying enzyme, the extraction efficiency of the honey white gourd peel is accelerated, and the time for extracting the beneficial components of the honey white gourd peel is shortened.

The second purpose of the invention is to provide a preparation process of the compound thickener, which has the advantages that: not only has good thickening effect, but also has good medicinal values of promoting blood circulation, protecting and nourishing liver and the like. Furthermore, the obtained thickening agent has good acid resistance and water retention.

In order to achieve the purpose, the invention provides the following technical scheme:

a preparation process of a compound thickener comprises the following steps:

s1, sequentially placing sodium carboxymethylcellulose, sodium polyacrylate, sodium tripolyphosphate, citric acid, konjac flour, sodium alginate and maltodextrin in a container, mechanically stirring at the speed of 100-180r/min for 10-20min to uniformly mix and stir the raw materials, and storing the obtained first mixed material for later use;

s2, adding tamarind gum, tragacanth gum and adjuvants into another container, stirring at 60-120r/min for 10-15min, stirring, and storing; the obtained mixture is marked as a second mixed material;

s3, respectively adding sodium alginate, an additive and a honey white gourd peel extract into a container, stirring at a speed of 60-120r/min for 10-15min, mechanically stirring uniformly to obtain a third mixed material, and storing the third mixed material for later use;

s4, mixing the first mixed material, the second mixed material and the third mixed material obtained in the steps S1, S2 and S3 respectively, stirring at the speed of 120-180r/min for 10-15min, uniformly stirring, and sieving to obtain the finished product of the compound thickening agent.

By adopting the technical scheme, the thickening agent prepared by the process has good thickening effect and also has good medicinal values of promoting blood circulation, protecting and nourishing liver and the like. Furthermore, the obtained thickening agent has good acid resistance and water retention.

The invention is further configured to: the aperture of the screen in the step S4 is 200-300 meshes.

By adopting the technical scheme, the finally prepared finished thickener product has uniform particle size through sieving treatment.

In summary, the invention has the following advantages:

1. according to the invention, the honey white gourd peel is used as one of raw materials in the preparation of the compound thickening agent, so that the honey white gourd peel can be reasonably utilized, and the purpose of changing waste into valuable can be realized. Moreover, the honey white gourd peel is rich in sugar, protein, B vitamins (B1, B2 and B6), vitamin C, minerals, fatty oil and the like. The saccharides, proteins, fatty oils, minerals and vitamins in the jackfruit have a certain effect on maintaining the normal physiological functions of the body. The honey white gourd peel extract prepared by the chemical extraction method is added into the compound thickening agent, so that the compound thickening agent not only has good thickening effect, but also has good medicinal values of promoting blood circulation, protecting and nourishing liver and the like;

2. according to the invention, tamarind gum and auxiliary materials (sucrose or glucose) are used as raw materials for preparing the thickening agent, the tamarind gum and the auxiliary materials are compatible with each other, so that a good thickening effect can be achieved, the stability of the thickening agent is good, the thickening performance of the prepared thickening agent is different when the blending ratio of the tamarind gum to the auxiliary materials is different, and the purpose of adjusting the thickening performance of the thickening agent can be achieved. In addition, tamarind gum and tragacanth gum are synergistic, so that the acid resistance and water retention of the thickening agent can be improved, and the taste of the pickled aquatic products is obviously improved.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.