1Chicken liver powder centrifugal spray dryerEnzymatic hydrolysis process

Protein enzymatic hydrolysis reaction (abbreviated as enzymatic hydrolysis or enzymatic hydrolysis) refers to the use of biological proteases to break down proteins in biological tissues, converting large molecule proteins into small molecule active peptides and amino acids for absorption and use. Protein enzymatic hydrolysis technology is a combination of protein engineering, enzyme engineering, and biotechnology, which has been widely used in the fields of medicine, food, and feed in recent years. Protein enzymatic hydrolysis reaction conditions are mild and can improve protein functional properties such as solubility, emulsifying ability, foaming ability, thermal stability, etc. At the same time, it can also produce a series of small peptides with biological activity. Hydrolyzed products can be used as food raw materials or additives in nutritional formula foods, health products, therapeutic foods, and instant drinks, thereby expanding the scope of protein applications, improving the value of protein use, and meeting the needs of special populations such as patients with insufficient protease secretion in the digestive tract, the elderly, athletes, infants, and young children. However, due to the unique nature of some animal protein sources, such as the strong fishy smell and poor taste of the liver and heart of domesticated sika deer, people's intake of high-quality animal protein is limited.

2、 Invention content:

The purpose of the present invention is to provide a sika deer liver/heart powder or granules, a preparation method, and application.

The present invention combines biotechnology with food engineering, using domesticated sika deer liver and heart as the main raw materials, and extracting them through biotechnology to produce sika deer liver (extract) powder and sika deer heart (extract) powder,

Produce food with high technological content, excellent taste and nutrition, and convenient to consume and carry.

The main feature of the present invention is the hydrolysis of deer liver protein into small molecule peptides and amino acids through biological enzymatic hydrolysis technology. Tests have shown that the deer liver powder of the present invention contains peptides with a molecular weight lower than IOkDa and is rich in essential amino acids for the human body, such as aspartic acid, glutamic acid, tyrosine, valine, proline, etc. The prepared Sika deer heart powder of the present invention also contains peptides with a molecular weight lower than IOkDa and essential amino acids for the human body, such as glycine, aspartic acid, proline, isoleucine, etc. Long term use can enhance myocardial motility and promote blood circulation. The present invention simultaneously discloses the application of sika deer liver/heart powder or granules and the food production process mainly composed of both, which improves the taste of sika deer liver and heart and has high head usability.

3、 The preparation method of Sika Deer Liver and Heart Powder and Sika Deer Liver and Heart Granules includes the following steps

I、 Preparation of Sika Deer Liver and Heart Hydrolysis Liquid

Take fresh sika deer liver/heart, clean it with distilled water, cut it into small pieces of Hcm3, add 9.12L of distilled water per kilogram of raw material, and then grind it with a colloid mill for 3 minutes to obtain a suspension; Add proteolytic enzyme to the suspension at a dosage of 90 (T2500U) per gram of sika deer liver heart, mix well, and hydrolyze at 37 ° C for 3 flight hours to obtain an enzymatically hydrolyzed suspension.

2. Protease enzymes, including one or more of pepsin, trypsin, neutral protease, and papain.

Centrifuge the enzymatic suspension at 4 ° C and 800 (Tl2000r/min) for 15 minutes, and then take the supernatant to obtain the hydrolyzed solution of sika deer liver/heart.

4、 Chicken liver powder centrifugal spray dryerworkmanship

(I) Spray dry the above hydrolysate into the spray dryer, the inlet air temperature is 11 (T14 (TC, exhaust air temperature is 900C, air flow is 35 40mm, peristaltic pump speed is 7 15%, to obtain sika deer liver/heart powder, which is packaged after high-temperature sterilization. The sika deer liver/heart powder (particle size less than 80 mesh) obtained by spray drying is fine and can be made into other forms of food, such as deer liver/heart crystal, deer liver/heart sugar, deer liver/heart soup, etc., and can also be used in the production of various health food.

(2) Fluidized bed spray granulation Add 8-15wt% adhesive (soluble starch, dextrin or cellulose, etc.) with hydrolysate mass into the above hydrolysate. The fluidized bed setting parameters are as follows: the rotational speed of the peristaltic pump is 55 75r/min, the inlet air temperature is IOiTl I (TC, auxiliary air temperature 6 (T80 ° C, atomization pressure 2. (Γ 3. OMPa), and the sika deer liver/heart particles are obtained. They are packaged after high-temperature sterilization. The sika deer liver/heart particles obtained by fluidized bed spray granulation method are uniform and less than 2 μ m. This particle can be taken alone or used as the main ingredient to produce other foods, such as deer liver/heart milk powder, high protein coffee, high protein cocoa powder, and various protein powders and other solid beverages.

5、 Principle of centrifugal spray dryer for chicken liver powder

After filtering and heating, the air enters the top air distributor of the dryer, and the hot air enters the drying chamber uniformly in a spiral shape. The feed liquid passes through the high-speed centrifugal atomizer on the top of the tower body, and (rotating) spray into extremely fine mist like liquid beads, which can be dried into finished products in a very short time in parallel with hot air. The finished product is continuously output from the bottom of the drying tower and the cyclone separator, and the exhaust gas is discharged by the fan.

6、 Characteristics of centrifugal spray drying of chicken liver powder

1The drying speed is fast, and the surface area of the material liquid is greatly increased after atomization. In the hot air flow, 95% -98% of the water can be evaporated instantly, and the drying time is only a few seconds, which is particularly suitable for drying heat sensitive materials.
2. The product has good uniformity, fluidity, and solubility, high purity, and good quality.
3. The production process is simplified and the operation control is convenient. For liquids with a moisture content of 40-60% (up to 90% for special materials), they can be dried into powder products in one go without the need for crushing and screening, reducing production processes and improving product purity. The particle size, bulk density, and moisture content of the product can be adjusted within a certain range by changing the operating conditions, making control and management very convenient.