JP6433475B2 - Method for suppressing burning of fluid nutritional composition containing L-arginine - Google Patents

Description

  The present invention relates to a method for suppressing scorching of a fluid nutritional composition containing L-arginine.

  In recent years, arginine has attracted attention as an amino acid that needs to be replenished for inflammatory diseases, infectious diseases, and impaired renal function. Arginine performs a very important physiological function and is treated as an essential amino acid in children. For example, arginine is used in a urea cycle (ornithine cycle) in which ammonia generated in the body is converted into urea, and is used for synthesis of a polyamine essential for cell growth and tissue repair. Furthermore, it is involved in various functions such as growth hormone secretion promotion, immune function enhancement, and fat metabolism promotion via its metabolite nitric oxide (NO). In addition, infusions containing arginine as the main ingredient help recovery after surgery and are used to reduce the incidence of infectious complications. In addition, it has been suggested to be effective for improving the symptoms of angina pectoris, peripheral vascular disease, and interstitial cystitis.

  Under such circumstances, various nutritional compositions or luxury products containing L-arginine have been proposed. For example, in Patent Document 1 (Japanese Patent Publication No. 2007-515417), 1.8% or less of the total calorie of the composition is derived from arginine, and the protein source contains proline at least 3% of the total calorie of the composition. A nutritional composition comprising is disclosed. This composition is a composition containing an appropriate amount of arginine for wound healing. Patent Document 2 (Japanese Patent Application Laid-Open No. 2002-186425) discloses a coffee beverage containing coffee, arginine and milk. The coffee beverage is a beverage in which precipitates generated by heat sterilization are suppressed by the addition of a basic substance such as arginine. Patent Document 3 (Japanese Patent Application Laid-Open No. 2005-137266) also discloses a coffee beverage containing L-histidine hydrochloride and L-arginine hydrochloride. In the said coffee drink, the unusual flavor in the coffee drink containing milk is suppressed by the synergistic effect of L-arginine hydrochloride and L-arginine hydrochloride. Furthermore, Patent Document 4 (Japanese Patent Application Laid-Open No. 10-139681) discloses an oral aqueous emulsion nutrition composition containing a wheat gluten degradation product containing L-arginine and a glutamine-containing peptide. The said composition is the composition which improved the remarkable bitterness produced by the mixing | blending of L-arginine and glutamine, the coloring produced at the time of heat sterilization, etc. by use of a glutamine containing peptide.

Special table 2007-515417 JP 2002-186425 A JP 2005-137266 A Japanese Patent Laid-Open No. 10-139681

  By the way, as also described in Patent Document 4, L-arginine has a unique bitterness. When carbohydrates are combined to improve this, there is a problem that if heat treatment is performed for sterilization or the like, a reaction with aminocarbonyl occurs and the product is markedly colored.

  Moreover, since milk protein has a good amino acid balance and contains minerals such as calcium, it can be a good protein source. However, since L-arginine is a basic amino acid, a large amount of an acidic pH adjuster is necessary to prevent bitterness and prevent precipitation of milk protein when blended in a beverage containing milk protein. It becomes. However, when a beverage containing an acidic pH adjusting agent such as arginine and citric acid and milk protein is heat-treated, it may be burnt and lose its product value. Moreover, in order to remove the burns remaining in the flow path of the sterilization apparatus, it takes time to clean the apparatus. For these reasons, there are cases where a high concentration of arginine cannot be blended depending on the formulation of the composition.

  The present invention has been made in view of the above-described background art, and the present invention provides more arginine while suppressing bitterness and scorching due to heat treatment in a fluid nutrition composition containing arginine and protein, particularly milk protein. It is an object of the present invention to provide a nutritional composition that can be formulated.

  In order to solve the above-described problems, in the present invention, by using a non-micelle-forming protein and insoluble calcium, it is possible to suppress scorching and bitterness due to heat treatment and maintain a good flavor.

  That is, the method of the present invention is a method for suppressing scorching caused by heating a fluid nutrition composition containing arginine, a protein source, a calcium source, and an acidic pH adjuster, and as a protein source in the composition, In this method, a non-micelle-forming protein is used for all or part thereof, and an insoluble calcium compound is used for all or part thereof as a calcium source in the composition.

  ADVANTAGE OF THE INVENTION According to this invention, the fluid composition in which the bitterness by arginine and the burning by heat processing were suppressed is provided. In addition, a fluid composition containing more arginine is provided as compared with the case where micelle-forming protein or water-soluble calcium is used. Moreover, scorching is suppressed in the piping that becomes the flow path in the continuous processing, and the cleaning work in the piping becomes simple.

  The fluid nutrition composition obtained by the method of the present invention is a heat-treated fluid nutrition composition containing arginine and a non-micelle-forming protein and having a pH of 6.0 to 7.3, which is insoluble calcium. Is a fluid nutritional composition in which scorching is suppressed and the flavor is good.

  The fluid nutrition composition means a composition having at least a protein source, preferably milk protein, and fluidity at room temperature (1 to 30 ° C.). The nutritional composition may contain carbohydrates, lipids, minerals and vitamins in addition to the protein source. The fluid nutrition composition can be, for example, a beverage-like composition or a sol composition having viscosity due to the use of a gelling agent. The fluid nutrition composition of the present invention is a composition that is mainly orally administered, for example, beverages such as soft drinks, coffee beverages, and sports drinks, which are luxury products, and maintain the physical strength of healthy and sick people. It can be an oral nutritional supplement or a liquid nutritional diet for supplementing the nutrition required for enhancement. It may also be a nutritional composition administered by a route other than oral administration, such as enteral nutrition liquid food, enteral nutrition, and central parenteral nutrition.

  The composition according to the present invention contains arginine, micelle-non-forming protein, and insoluble calcium as essential components. Arginine may be any of L-arginine, D-arginine, and racemic DL-arginine, but L-arginine is desirable from the viewpoint of its usefulness. As arginine, one or more of free arginine and arginine salts are used. Examples of arginine salts include arginine hydrochloride, arginine phosphate, and arginine glutamate.

  A non-micelle forming protein is a protein that does not form micelles in a system containing water and oil. Examples of non-micelle forming proteins include sodium caseinate and potassium caseinate. In the present invention, a non-micelle-forming protein derived from milk protein is preferably used because it serves as a source of good-quality amino acids. Examples of milk proteins that can be widely used in fluid nutritional compositions include MPC (milk protein concentrate), skim milk powder, MPI (milk protein isolate), casein and its caseinate. The Among these milk proteins, MPC, skim milk powder, and MPI have the property of forming micelles. Caseinate has different properties depending on its salt, and calcium caseinate and magnesium caseinate form micelles, but sodium caseinate and potassium caseinate do not form micelles. However, in the composition of the present invention, a non-micelle-forming protein other than caseinate can be used as a protein source without departing from the object of the present invention. For example, whey, soy protein, peptide and the like are exemplified.

  The blending amount of the protein in the composition is arbitrary as long as it does not cause burning or a decrease in flavor. The lower limit amount is, for example, 0.01 g in 100 ml of the composition, 0.1 g, 0.5 g, and 1 g. The upper limit amount is, for example, 50 g in 100 ml of the composition, 30 g, 20 g, or 10 g. Moreover, if it is a composition used for the nutritional supplementation of a sick person or a patient before and after surgery, it is preferably adjusted so that the amount of heat derived from protein relative to the total amount of heat in 100 ml of the composition is 2 to 30%. The

  The composition according to the present invention comprises an insoluble calcium compound. This is because the use of an insoluble calcium compound can prevent scorching due to heating. The insoluble calcium compound is a substance that hardly dissolves in water, and has a solubility in water at 20 ° C. of 0.05 g / ml or less, preferably 0.01 g / ml or less, desirably 0.005 g / ml or less. is there. Calcium phosphate and calcium carbonate are exemplified, and calcium phosphate used for foods and pharmaceuticals is preferably used. The insoluble calcium compound has significance as a substitute for calcium contained in milk proteins such as MPC, skim milk powder, and MPI, and is used for nutritional supplementation. The amount of the insoluble calcium compound is appropriately determined from the viewpoint of nutritional supplementation. The lower limit is, for example, 0.0001 g, 0.001 g, 0.005 g, 0.01 g, 0.05 g, and 0.1 g in 100 ml of the composition. Moreover, the upper limit amount is, for example, 10 g, 5 g, 2 g, and 1 g.

  In order to suppress protein precipitation and bitterness due to arginine, the pH of the composition is adjusted to 6.0 to 7.3 by an acidic pH adjuster. If the pH of the composition is less than 6.0, there is a risk of scorching during sterilization by heating. On the other hand, if the pH of the composition exceeds 7.3, the flavor of the composition may be impaired by the bitterness or scorching of arginine.

  The acidic pH adjuster is a component that adjusts the pH of the composition, and is an acidic substance that mainly neutralizes arginine, which is a basic component. Examples of the acidic pH adjuster include inorganic acids such as phosphoric acid, hydrochloric acid, and sulfuric acid, and organic acids such as citric acid, oxalic acid, malic acid, and acetic acid. Since the composition of the present invention is a nutritional composition, acids that can be used as food additives such as phosphoric acid, citric acid, malic acid, and acetic acid are preferred. But the acid which comprises an arginine salt can also be utilized as the said acidic pH adjuster.

  In the present invention, the combination of non-micelle-forming protein as a protein source and insoluble calcium prevents scorching due to heating and maintains the flavor. Although this mechanism has not been fully elucidated, in the composition using milk protein, the cause of scorching is that the acid mixed with arginine destroys the micelles of the milk protein, thereby releasing calcium (ions). It is thought to be. That is, it can be said that the composition of the present invention is a composition in which micelle formation is prevented by a non-micelle-forming protein and calcium release is suppressed by using insoluble calcium. As a result, it is possible to increase the amount of the acidic pH adjuster that can be used for adjusting the liquidity, and arginine can be blended at a high concentration. And in other words, the method of the present invention uses the occurrence of scorching that occurs when a fluid composition containing arginine, a protein source, a calcium source, and an acidic pH adjuster is heated as a protein source in the composition. It can be said that this is a method of inhibiting by using a micelle-non-forming protein for all or part thereof and using an insoluble calcium compound for all or part thereof as a calcium source in the composition.

  The blending amount of arginine in the composition according to the present invention is not particularly limited as long as scorch is prevented and the flavor can be maintained satisfactorily. The lower limit may be, for example, 0.001 g, 100 g, 0.1 g, 0.5 g, 1.0 g, 1.5 g as free arginine in 100 ml of the composition. Moreover, the upper limit is, for example, 4.5 g in 100 ml of the composition, 4.0 g, 3.5 g, and 3.0 g. If the amount is 4.5 g or more in 100 ml of the composition, the flavor of the composition may be lowered. Therefore, the blending amount is preferably less than 4.5 g in 100 ml of the composition.

  The composition according to the present invention is also used as a composition for nutritional supplementation before and after surgery, such as a composition for oral nutrition and a composition for enteral nutrition. Accordingly, the composition may include a viscosity modifier for the composition such as carbohydrates, proteins, lipids, minerals, vitamins, gelling agents. However, when a micelle-forming protein is used as a protein source, or when a calcium compound other than insoluble calcium is used as a calcium source that is a mineral, there is a case where burnt or a decrease in flavor is caused. Therefore, it is desirable that the protein source in the composition is only the non-micelle-forming protein, and the calcium source in the composition is only the insoluble calcium. However, as long as the flavor is maintained without burning, micelle-forming protein can be blended as a protein source, and a water-soluble calcium compound can be blended as a calcium source. In this case, the upper limit of the amount of the micelle-forming protein is 0.1 g in 100 ml of the composition, 0.05 g, 0.01 g, and 0.005 g. The upper limit of the amount of the water-soluble calcium compound is 0.1 g in 100 ml of the composition, 0.05 g, 0.01 g, and 0.005 g.

  The above components are prepared into a liquid composition together with water so that the pH is 6.0 to 7.3. The prepared liquid composition is heated and sterilized or sterilized. Examples of the heat treatment method include batch processing by autoclave and continuous processing by steam injection. After the heat treatment, it is cooled to room temperature. As a result, a fluid nutritional composition is obtained that does not burn during heat treatment and has a good flavor. Moreover, since there is no burning in the piping in the continuous processing, the cleaning operation of the production line becomes simple.

  Next, the present invention will be described in detail based on the following examples. The following embodiments are merely examples, and it goes without saying that the present invention is not limited to the following embodiments.

[Relationship between scorching and protein and calcium used]
The relationship between the occurrence of scorch in the composition containing L-arginine (manufactured by Kyowa Hakko Co., Ltd.), the type of protein used, and the type of calcium was examined. Water was added to adjust the liquid composition so as to have the blending amounts shown in Table 1, and after heating by steam injection (145 ° C., 5 seconds), homogenized at 45 MPa, and then cooled. Skim milk powder is manufactured by Meiji Dairies Co., Ltd. (protein content 34 w / w%), milk protein concentrate (MPC) is manufactured by Fontera Japan Co., Ltd. (protein content 80 w / w%), and calcium phosphate is calcium manufactured by Maruo Calcium Co., Ltd. As the slurry (containing 21 w / w% as calcium phosphate) and whey calcium, whey calcium (containing 30 w / w% as calcium) manufactured by Fontera Japan Co., Ltd. was used.

  According to this, when 1% or more of L-arginine, a micelle-forming protein, and water-soluble calcium were used, the occurrence of scorching was observed regardless of the presence or absence of a non-micelle-forming protein.

[Examination of Arginine Addition Amount]
Next, water was added so that the blending amounts shown in Table 2 were added to prepare a liquid composition, which was heated by steam injection (145 ° C., 5 seconds), homogenized at 45 MPa, and then cooled.

  According to this, when less than 4.5% of L-arginine was included, the occurrence of scorching was not observed, but when it was 4.5% or more, no scorching was observed when containing L-arginine, but the flavor May be reduced.

[Investigation of pH]
Next, water was added so that the blending amounts shown in Table 3 were added, the liquid composition was adjusted, heated by steam injection (145 ° C., 5 seconds), homogenized at 45 MPa, and then cooled.

  According to this, scorching was observed when the pH was less than 6.0. On the other hand, when the pH exceeded 7.3, although there was no scorch, the flavor sometimes deteriorated.

  From the components shown in Table 4, beverages that were the compositions of the present invention were produced. The composition was not burnt and had a good flavor. The beverage was also suitable as an enteral nutrition composition or an oral nutrition composition.

  The present invention provides a fluid nutrition composition capable of ingesting a relatively large amount of arginine with a small amount of intake.

Claims (2)

In 100 ml of the composition, 1.0 g or more and less than 4.5 g of arginine, a protein source, a calcium source and an acidic pH adjuster, and a pH substantially free of micelle-forming protein and water-soluble calcium compound is 6. A method for suppressing scorching caused by heating a fluid nutritional composition that is 0-7.3,
The protein source is sodium caseinate and / or potassium caseinate;
The calcium source is calcium phosphate and / or calcium carbonate;
And the method which makes the compounding ratio of arginine with respect to the total amount of sodium caseinate and potassium caseinate into the range of 5 / 71-40 / 43 by mass ratio. A method for producing a fluid nutritional composition comprising arginine, sodium caseinate and / or potassium caseinate, calcium phosphate and / or calcium carbonate, and an acidic pH adjuster and having a pH of 6.0 to 7.3. And
Arginine is mixed in a mass ratio of 5/71 to 40/43 with respect to the total amount of sodium caseinate and potassium caseinate, and 1.0 g or more and less than 4.5 g of arginine in 100 ml of the composition; The manufacturing method which has the process of heating the composition with which the micelle formation protein and the water-soluble calcium compound were mix | blended to such an extent that the charring after a heating does not arise.