JP3085746U - Silk protein supplement for animal feed - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a silk protein supplement for animal feed which can replace beef bone meal. SOLUTION: A cocoon is boiled in an equal volume of hot water, hydrolyzed by adding a specified amount of hydrochloric acid, the resulting amino acid solution is neutralized and concentrated with sodium hydroxide, and the concentrated solution is dialyzed. The amino acid solution was separated and extracted, followed by freeze-drying to produce a powdered silk powder, while grinding the pupa that had not been hydrolyzed in the above step and acid-hydrolyzing it again in the above step, after powdering, The above-mentioned silk powder and pupa powder are mixed and processed into granules or tablets of a fixed shape.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a silk protein supplement for animal feed, wherein silk protein obtained by treating a cocoon by a predetermined method is processed for animal feed such as livestock.

[0002]

[Prior art]

 Conventionally, fish meal, bovine bone meal, and the like have been used as protein supplements mixed in feed for livestock such as cattle, horses, and pigs.

[0003]

[Problems to be solved by the invention]

 Conventionally, fish meal, bovine bone meal, etc. have been used as protein supplements mixed with animal feed for cattle, horses, pigs, etc., but recently the use of bovine bone meal as a supplement to feed has become a problem. Therefore, we propose silk protein supplements as an alternative protein supplement.

[0004]

[Means for Solving the Problems]

 After boiling the cocoon in an equal volume of hot water, add a specified amount of hydrochloric acid and hydrolyze. The resulting amino acid solution is neutralized and concentrated with sodium hydroxide. The concentrated solution is dialyzed to separate and extract the amino acid solution, which is freeze-dried to produce a powdered silk powder. On the other hand, the pupa which has not been hydrolyzed in the above step is ground and acid-hydrolyzed again in the above step and powdered, and then the above-mentioned silk powder and pupa powder are mixed and processed into granules or tablets of a fixed shape.

[0005]

[Embodiment of the invention]

 Hereinafter, the present invention will be described more specifically. (B) Boil the cocoon with hot water of the same volume (appearance volume) as the cocoon. As a result, part of the air inside the cocoon is replaced with hot water, and the cocoon sinks in the water. (B) A prescribed amount of hydrochloric acid is added to the above hot water, and the mixture is left at 105 ° C. for about 30 hours. (C) The cocoon thread is hydrolyzed to form an amino acid solution, and the pupa is partially decomposed, but remains underneath. Take out the unhydrolyzed pupa. (D) When the amino acid solution is neutralized with sodium hydroxide and concentrated, a mixture of salt and amino acid solution is obtained. The mixture is dialyzed to separate the salt and amino acid solution, and the amino acid solution is extracted. (E) The amino acid solution is freeze-dried to produce a powdered silk powder. (F) Grind the pupa remaining without being decomposed by the above hydrolysis, heat it again with hot water, and add a specified amount of hydrochloric acid to carry out acid hydrolysis. (G) The hydrolyzed pupa is freeze-dried to produce pupa powder. (H) Mix the silk powder and the pupa powder and process into granules or tablets of a fixed shape.

In order to make the average molecular weight of the silk powder 500 or less, a concentrated amino acid solution obtained by dialysis-separating the concentrate is freeze-dried to obtain a silk powder having a small molecular weight. The reason why the average molecular weight is set to 500 or less is that digestion and absorption deteriorate as the molecular weight increases.

[0007] Silk powder is rich in many kinds of amino acids including essential amino acids. Table 1 shows the analysis results of 100% silk powder by Japan Food Research Laboratories.

[0008] As the silk protein raw material used in the present invention, not only cocoons containing pupa but also yarn waste generated in a spinning or weaving process can be used. The use of cocoon waste and thread waste, which are industrial waste, reduces waste and is favorable for the environment, and at the same time reduces costs and is economical.

[0009] In addition to the method using hydrochloric acid, the acid hydrolysis can be performed using another acid such as sulfuric acid or phosphoric acid, or can be performed using an alkali. In either case, neutralization and desalting are required.

When the present invention is applied to animals such as domestic animals, the powder may be mixed with the feed as it is. However, granules or tablets are easier to eat and useless. Various shapes such as a round shape, a square shape, and a triangular shape can be considered for the tablet, but any shape may be used as long as it is a solid shape. FIG. 1 shows examples of various shapes.

When the present invention is given to cattle, for example, as a guide for the amount given per day, 50 g to 100 g for cattle weighing 100 kg to 350 kg, and 100 g to 150 g for cattle weighing 350 kg to 500 kg are used as feed. Give and mix.

[0012] At the Dewa ranch in Gunma prefecture, several racehorses were mixed with the present invention in feed and subjected to experiments for several months. As a result, very good results were obtained.

[0013]

[Effect of the invention]

 The present invention is proposed as a silk protein supplement that replaces protein supplements such as beef bone meal, which has recently become a problem.If the present invention is given to animals such as livestock, it will be healthy and have high quality meat. And milk is produced. Also, when given to pets such as dogs and cats, they become healthier and have better coats.

[Brief description of the drawings]

FIG. 1 is an embodiment of various shapes when the present invention is made into a tablet.

[Explanation of symbols]

 1 Round tablet 2 Square tablet 3 Triangle tablet

Claims (2)

[Utility model registration claims] 1. A cocoon is boiled in an equal volume of hot water, hydrolyzed by adding a specified amount of hydrochloric acid, the resulting amino acid solution is neutralized and concentrated with sodium hydroxide, and the concentrated solution is dialyzed. The amino acid solution was separated and extracted, and the resulting solution was freeze-dried to produce a powdered silk powder.On the other hand, the pupa that had not been hydrolyzed in the above step was ground and again acid-hydrolyzed and powdered in the above step. A silk protein supplement for animal feed, comprising mixing the above-mentioned silk powder and pupa powder and processing the mixture into granules or tablets of a uniform shape. 2. The silk protein supplement for animal feed according to claim 1, wherein the average molecular weight of the silk powder is 500 or less.