CN104883890B - Load the manufacture method and manufacture system of the milk-contained drink of container - Google Patents

Load the manufacture method and manufacture system of the milk-contained drink of container Download PDF

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Publication number
CN104883890B
CN104883890B CN201480003739.6A CN201480003739A CN104883890B CN 104883890 B CN104883890 B CN 104883890B CN 201480003739 A CN201480003739 A CN 201480003739A CN 104883890 B CN104883890 B CN 104883890B
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China
Prior art keywords
milk
container
liquid object
dissolved oxygen
newborn liquid
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CN201480003739.6A
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CN104883890A (en
Inventor
福田宗纲
松原裕树
远藤梓
市村武文
东俊二
赤松亚由美
长田尭
小川平
小川一平
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Meiji Co Ltd
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Meiji Co Ltd
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    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23C—DAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
    • A23C3/00—Preservation of milk or milk preparations
    • A23C3/005—Storing or packaging in a vacuum or in inert or sterile gaseous atmosphere
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/72—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials
    • B65D85/80—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials for milk

Abstract

The present invention provides a kind of manufacture method for the milk-contained drink for loading container, and the manufacture method can suppress the deterioration of the flavors of milk-contained drink such as the cow's milk after housing into container, the propagation of contaminated bacteria for a long time.A kind of manufacture method for the milk-contained drink for loading container, including：At least a portion containing the dissolved oxygen contained in newborn liquid object such as cow's milk is removed and the container collecting process that the milk-contained drink for obtaining loading container is housed into the container formed by the laminates comprising paper base material layer and polyamide resin layer containing newborn liquid object after obtaining the deoxidation treatment process containing newborn liquid object of dissolved oxygen concentration reduction and being handled in the deoxidation treatment process.

Description

Load the manufacture method and manufacture system of the milk-contained drink of container
Technical field
The present invention relates to the manufacture method and manufacture system for the milk-contained drink for loading container.
Background technology
In the past, by reduce the dissolved oxygen concentration containing newborn liquid object such as cow's milk suppress the flavor containing newborn liquid object through when Deterioration is well-known.
For example, as it is known that a kind of reduce caused by heating caused by dimethyl disulphide, with lactogenesis or not The manufacture method of the beverage of the approximate flavor of liquid is heated, the manufacture method is characterised by, in not heating to breast or containing breast Before liquid is heated, enter line replacement with non-active gas such as nitrogen, dissolved oxygen is reduced to below 5ppm's in liquid is made Heated under state (patent document 1).
A kind of additionally, it is known that manufacture method of cow's milk class, it is characterised in that including：Raw milk heat at sterilization The process of reason, the cow's milk class heated after sterilizing is stored in process in the aseptic tank after being replaced with non-active gas and will The cow's milk class being stored in above-mentioned aseptic tank is filled into the process (patent document 2) in packing container.
On the other hand, in order to suppress the rotten of the liquid diet thing caused by oxygen, the transmission for preventing oxygen etc. is used The excellent paper container of barrier is come to preserve liquid meal thing be well-known.
For example, as it is known that a kind of paper container with barrier being made up of composite, wherein, the composite is in paper Polylactic resin layer is laminated with the outside of substrate layer, is laminated with the inside of paper base material layer by polylactic resin layer, adhesive layer, resistance The composite for the barrier sealant that interlayer, adhesive layer and polylactic resin layer are formed, barrier layer is by ethylene vinyl alcohol copolymer Any one composition in thing, 6- nylon, 6-66 copolymer nylons or MXD-6 m-xylene diamines, the adhesive layers of barrier layer both sides by Acid modified resin forms (patent document 3).
Prior art literature
Patent document
Patent document 1：No. 3083798 publications of Japanese Patent No.
Patent document 2：No. 3490428 publications of Japanese Patent No.
Patent document 3：Japanese Unexamined Patent Publication 2010-69766 publications
The content of the invention
Invent problem to be solved
As described above, in the past, suppress to contain by reducing the dissolved oxygen concentration containing newborn liquid object (milk-contained drink) such as cow's milk The deterioration of the flavor of newborn liquid object is well-known.
But even reducing the cow's milk of dissolved oxygen concentration during fabrication, the storage life after housing into container Between it is long when, the dissolved oxygen concentration of cow's milk can also increase over time, there is that there may be the deterioration of flavor, the increasing of contaminated bacteria The problem of growing.
It is an object of the invention to provide the milk-contained drinks such as the cow's milk that can suppress for a long time after housing into container The deterioration of flavor, the propagation of contaminated bacteria loading container milk-contained drink manufacture method and manufacture system.
Means for solving the problems
The present inventor has made intensive studies to solve above-mentioned problem, as a result finds, contains in it will contain newborn liquid object Dissolved oxygen at least a portion remove and obtain dissolved oxygen concentration reduction contain newborn liquid object after, by this containing newborn liquid object collecting During into the container formed by the laminates comprising paper base material layer and polyamide resin layer, it can suppress to house into container for a long time The deterioration of the flavor of milk-contained drink afterwards, the propagation of contaminated bacteria, so as to complete the present invention.
That is, the present invention provides following [1]~[9].
[1] a kind of manufacture method for the milk-contained drink for loading container, it is characterised in that including：Newborn liquid object (example will be contained Such as, unheated lactogenesis) at least a portion of dissolved oxygen for containing remove and obtain the state containing emulsion of dissolved oxygen concentration reduction The deoxidation treatment process of thing and will in above-mentioned deoxidation treatment process handle after containing newborn liquid object house arrive by including paper base material The container containing newborn liquid beverage for obtaining loading container in the container that the laminates of layer and polyamide resin layer are formed houses process.
[2] manufacture method of the milk-contained drink of the loading container according to above-mentioned [1], wherein, above-mentioned deoxidation treatment work Sequence is carried out by the following method：By the above-mentioned non-active gas (example of at least a portion containing the dissolved oxygen contained in newborn liquid object Such as, nitrogen) displacement method, and/or by above-mentioned at least a portion containing the dissolved oxygen contained in newborn liquid object pass through deaerate (example Such as, deaerating membrane, heating such as decompression or vacuum, addition oxygen scavenger, hollow-fibre membrane etc.) and the method for removing.
[3] manufacture method of the milk-contained drink of the loading container according to above-mentioned [1] or [2], wherein, said vesse is received Hold in process, the dissolved oxygen concentration containing newborn liquid object before housing in said vesse is below 8ppm.
[4] manufacture method of the milk-contained drink of the loading container according to any one of above-mentioned [1]~[3], wherein, on State container to house in process, the polyamide resin layer for forming said vesse contains selected from by nylon MXD 6, nylon 6, nylon66 fiber and Buddhist nun One or more of group of the composition of dragon 46.
[5] manufacture method of the milk-contained drink of the loading container according to any one of above-mentioned [1]~[4], wherein, Before above-mentioned deoxidation treatment process, after above-mentioned deoxidation treatment process and while above-mentioned deoxidation treatment process in one More than stage, including heated above-mentioned containing newborn liquid object come the sterilization process sterilized.
[6] manufacture method of the milk-contained drink of the loading container according to any one of above-mentioned [1]~[5], wherein, Before said vesse houses process, including by the above-mentioned liquid storage process being stored into containing newborn liquid object in surge tank.
[7] manufacture method of the milk-contained drink of the loading container according to above-mentioned [6], wherein, in above-mentioned liquid storage process, Adjust the stirring containing newborn liquid object in above-mentioned surge tank so that the increase amplitude of the above-mentioned dissolved oxygen concentration containing newborn liquid object with The front and rear difference of liquid storage is calculated as below 3ppm mode.
[8] manufacture method of the milk-contained drink of the loading container according to any one of above-mentioned [1]~[7], wherein, on State container to house in process, said vesse is roof (Gable top) type paper container.
[9] a kind of manufacture system for the milk-contained drink for loading container, it is characterised in that including：For newborn liquid object will to be contained In at least a portion of dissolved oxygen for containing remove and obtain dissolved oxygen concentration reduction the deoxidation treatment unit containing newborn liquid object, Arrived with for being housed containing newborn liquid object after being handled in above-mentioned deoxidation treatment unit by including paper base material layer and nylon resin The container accepting unit for loading the milk-contained drink of container is obtained in the container that the laminates of layer are formed.
The effect of invention
In accordance with the invention it is possible to suppress the flavor of the milk-contained drink (containing newborn liquid object) after housing into container for a long time Deterioration, the propagation of contaminated bacteria.
Embodiment
One of the manufacture method of the milk-contained drink of the loading container of the present invention includes：(A) by unheated state containing emulsion At least a portion of the dissolved oxygen contained in thing removes and obtains the deoxidation treatment work containing newborn liquid object of dissolved oxygen concentration reduction Sequence, (B) contain what is obtained in process (B) the sterilization process, (C) that are heated containing newborn liquid object to sterilize that are obtained in process (A) Newborn liquid object be stored into the liquid storage process in surge tank and (D) will after the liquid storage in process (C) containing newborn liquid object house arrive by The container for obtaining loading the milk-contained drink of container comprising the laminates of paper base material layer and polyamide resin layer in the container formed is received Hold process.
Hereinafter, each operation is described in detail.
[process (A)：Deoxidation treatment process]
Process (A) is to remove unheated at least a portion containing the dissolved oxygen contained in newborn liquid object and dissolved The deoxidation treatment process containing newborn liquid object that oxygen concentration reduces.
As the example containing newborn liquid object, can enumerate：Lactogenesis and as comprising lactogenesis, lactogenesis machining object it is various Beverage is (for example, concentrated milk, skimmed milk, partly skimmed milk, skim concentrated milk, partially skimmed concentrated milk, cream, whey, penetrant (permeate), recombined milk, reduction concentrated milk, reduction skimmed milk, reduction partly skimmed milk, reconstituted cream, reduction whey, reduction Penetrant, modified milk, milk beverage, fermentation milk drink, whey beverage, sour milk beverage, the cold drink etc. for containing breast) raw material make Liquid object etc..
As long as in addition, the liquid object containing breast in a part, then equivalent to containing newborn liquid object, therefore, addition derives from Raw material beyond the raw material of breast is arbitrary.
In addition, " liquid object " in term " containing newborn liquid object " is not limited to dissolve, suspend or be dispersed with liquid component The common liquid object of all or part of solid constituent, it is also included within liquid component containing precipitate component (for example, mineral matter The solid constituents such as the insoluble compositions such as class, tealeaves class, coffee-type, lactose, insoluble food fiber, pulp, gizzard, broken jelly) Material.
As the example of lactogenesis, can enumerate：Cow's milk, sheep breast, sheep breast, buffalo's milk, goat dairy, whale breast etc. are from the food in one's mouth The plant breasts such as the breast (beast breast) of newborn class, soya-bean milk, the artificial breast formed using the Jiang Shui such as emulsifying agent and oil emulsification etc..
On the lower limit of the liquid temperature containing newborn liquid object in process (A) (deoxidation treatment process), as long as the liquid object is not It can freeze, solidify and lose flowability, then be not particularly limited, such as be preferably -10 DEG C, it is more preferably -5 DEG C, further excellent Elect 0 DEG C, more preferably 1 DEG C as.When the value is less than -10 DEG C, it is possible to freeze containing newborn liquid object, this contains newborn liquid object and consolidated Change.
On the higher limit of the liquid temperature containing newborn liquid object in process (A) (deoxidation treatment process), as long as this will not occurs The fatty excessive deterioration of liquid object, the excessive brown stain (Maillard reaction) of the excess modification of protein, saccharic, then without special Limitation, more preferably preferably 60 DEG C, more preferably 50 DEG C, 40 DEG C.When the value is more than 60 DEG C, it is possible to which fatty is excessive Deterioration, the excessive brown stain (Maillard reaction) of the excess modification of protein, saccharic become easily to carry out.
That is, the liquid temperature containing newborn liquid object in process (A) (deoxidation treatment process) is preferably -10 DEG C~60 DEG C, more preferably For -5 DEG C~60 DEG C, more preferably 0 DEG C~60 DEG C, more preferably 1 DEG C~60 DEG C, more preferably 1 DEG C~50 DEG C, it is more preferably 1 DEG C~40 DEG C, more preferably 1 DEG C~30 DEG C, more preferably 1 DEG C~20 DEG C, further excellent Elect 1 DEG C~15 DEG C as, more preferably 1 DEG C~12 DEG C, more preferably 1 DEG C~10 DEG C, more preferably 1 DEG C~8 DEG C, more preferably 1 DEG C~7 DEG C, more preferably 1 DEG C~6 DEG C, more preferably 1 DEG C~5 DEG C, further preferably For 2 DEG C~5 DEG C, more preferably 2 DEG C~4 DEG C.
Process (A) (deoxidation treatment process) can for example be entered by the method selected from one or more of following method OK：(a) method for replacing at least a portion containing the dissolved oxygen contained in newborn liquid object with non-active gas；(b) breast will be contained At least a portion of the dissolved oxygen contained in liquid object is by degassing (for example, being placed under the atmosphere of decompression or vacuum, addition deoxygenation Agent, in the deaerating membranes such as hollow-fibre membrane by, heating etc.) and remove method.
Process (A) (deoxidation treatment process) can also be by the method for above-mentioned (a) and/or (b) simultaneously or front and rear combination is entered OK.
Example as the method for replacing at least a portion containing the dissolved oxygen contained in newborn liquid object with non-active gas Son, it can enumerate and non-active gas are blown into containing the method in newborn liquid object.When in this case, non-active gas are blown into Then it is not particularly limited as long as the liquid temperature containing newborn liquid object suppresses the bubble generation as caused by the displacement of non-active gas, is, for example, Less than 60 DEG C, preferably less than 50 DEG C, more preferably less than 40 DEG C, more preferably less than 30 DEG C, more preferably 25 Below DEG C, more preferably less than 20 DEG C, more preferably less than 15 DEG C, more preferably less than 12 DEG C, further Preferably less than 10 DEG C.
As the example of non-active gas, nitrogen, argon gas etc. can be enumerated.Wherein, from safety, low cost, be readily available From the aspect of, preferred nitrogen.
As by least a portion containing the dissolved oxygen contained in newborn liquid object by decompression and the example of method that removes, Can enumerate by containing newborn liquid object be placed in preferably 1~50kPa, more preferably 3~40kPa, more preferably 5~30kPa, Method particularly preferably under 5~25kPa pressure (under decompression).In this case, as long as the liquid temperature containing newborn liquid object suppresses The bubble as caused by decompression is produced and is then not particularly limited, for example, less than 60 DEG C, preferably less than 50 DEG C, more preferably 40 DEG C Hereinafter, more preferably less than 30 DEG C, more preferably less than 25 DEG C, more preferably less than 20 DEG C, it is further excellent Elect less than 15 DEG C, more preferably less than 12 DEG C, more preferably less than 10 DEG C as.
From the side of the dissolved oxygen concentration for the milk-contained drink for reducing the loading container obtained in process (D) (container collecting process) Face consider, by process (A) handle after the dissolved oxygen concentration containing newborn liquid object be preferably below 8ppm, more preferably 7ppm with Under, more preferably below 6ppm, more preferably below 5ppm, more preferably below 4ppm, further preferably For below 3ppm, more preferably below 2ppm, more preferably below 1ppm.
In the present invention, process (B) can also be carried out before process (A).In this case, the process object of process (A) Thing be not it is unheated contain newborn liquid object, but heat and contain newborn liquid object after sterilization.In addition, in the present invention, can also be with work Sequence (A) simultaneously carries out process (B).In addition, in the present invention, process (A) can also be inserted among process (B).This feelings Under condition, the object to be processed of process (A) be not it is unheated contain newborn liquid object, but heat in sterilization and contain newborn liquid object.
Process (A) (deoxidation treatment process) can be good to pre-coordination carried out blanketly containing newborn liquid object, can also divide The other liquid object (for example, skimmed milk and cream etc.) to as the raw material containing newborn liquid object carries out deoxidation treatment (process (A)), so After remix.
[process (B)：Sterilization process]
Process (B) is the process heated containing newborn liquid object to sterilize that will be obtained in process (A).
Add thermally-sterilized method to be not particularly limited, can enumerate：Low temperature long-time bactericidal assay (LTLT methods), high temperature, short time Between bactericidal assay (HTST methods), ultra high temperature sterilization method (UHT methods), electrified regulation bactericidal assay (Joule heat bactericidal assay), the high electrolysis of high stream Bactericidal assay etc..For example, can at 110~150 DEG C at 1~5 second, 70~75 DEG C at 15 seconds, 62~65 DEG C 30 minutes it is generally public Heating sterilization is carried out under the breast heating sterilization conditions known.
The increase of the dissolved oxygen concentration containing newborn liquid object is nearly free from process (B).
In the present invention, process (B) can also all be carried out before and after process (A).That is, can also be in process (B) Centre insertion process (A).In this case, the object to be processed of process (A) be not it is unheated contain newborn liquid object, but heat Contain newborn liquid object in sterilization.
In addition, in the present invention, process (B) can also be carried out only before process (A).In this case, the place of process (B) Reason object be not dissolved oxygen concentration reduce contain newborn liquid object, but without the dissolving with usual size of process (A) Oxygen concentration contains newborn liquid object.
In addition, in the present invention, process (A) can also be simultaneously carried out with process (B).For example, process (B) can be illustrated in Midway all the time persistently carry out deoxidation treatment process.
It should be noted that process (B) is the optional process steps that can be included in as needed in the manufacture method of the present invention, Rather than required process.For example, to first pass through the sterilizations do not heated such as filtration sterilization, ultraviolet irradiation and/or sterilizing work in advance In the case of containing newborn liquid object obtained from sequence as object, it is not necessary to the heating sterilization in process (B) again.
[process (C)：Liquid storage process]
Process (C) is the process being stored into containing newborn liquid object in surge tank that will be obtained in process (B).Need what is illustrated It is that process (C) is the optional process steps that can be included in as needed in the manufacture method of the present invention, rather than required process.
Surge tank is will to contain before newborn liquid object is housed into container to be used for temporarily in process (D) (container collecting process) Store the tank containing newborn liquid object.
Surge tank possesses：With the inflow entrance for making to enter containing newborn liquid stream and for make containing newborn liquid object discharge row The can body of outlet, the chuck for being stored in for adjusting the liquid temperature containing newborn liquid object in can body and stored for stirring The agitating device (stirrer paddle etc.) containing newborn liquid object in can body.It should be noted that agitating device (stirrer paddle Deng) it is for making composition composition and/or the uniform device of liquid temperature containing newborn liquid object.
On surge tank, following method can be enumerated：(i) when liquid storage starts, it is straight only to carry out the inflow containing newborn liquid object To housed in can body it is a certain amount of contain newborn liquid object untill, then, only housed in can body and contain newborn liquid object Discharge, when the remaining quantity containing newborn liquid object in can body reaches a certain amount of following or is zero, as described above only The inflow containing newborn liquid object is carried out, afterwards, repeats the operation (batch process) of discharge and inflow similar to the above； (ii) when liquid storage starts, the inflow containing newborn liquid object is only carried out until being housed in can body and a certain amount of being containing newborn liquid object Only, then, the amount containing newborn liquid object in can body is kept certain, while carrying out containing newborn liquid object into can body Flow into and discharge (continous way method)；Deng.
The operating of the stirrer paddle of surge tank is adjusted as follows：The dissolved oxygen concentration containing newborn liquid object in liquid storage Increase amplitude in terms of the difference before and after liquid storage be, for example, below 8ppm, more preferably preferably below 7ppm, below 6ppm, further Preferably below 5ppm, more preferably below 4ppm, more preferably below 3ppm, more preferably 2ppm with Under, more preferably below 1ppm, more preferably below 0.5ppm.
Alternatively, it is also possible to further be taken off what is obtained in above-mentioned operation (A) and process (B) in surge tank containing newborn liquid object Oxygen.In this case, the operating of the stirrer paddle of surge tank is adjusted as follows：The dissolved oxygen containing newborn liquid object in liquid storage The increase amplitude of concentration is, for example, more than 0ppm in terms of the difference before and after liquid storage, and preferably more than -1ppm is (in other words, with dissolved oxygen The reduction amplitude of concentration is calculated as more than 1ppm), more preferably more than -2ppm, more preferably more than -3ppm are further excellent Elect as more than -4ppm, more preferably more than -5ppm, more preferably more than -6ppm, more preferably -7ppm with On, more preferably more than -8ppm.
Herein, the front and rear difference of liquid storage refers to, just from the value of the dissolved oxygen concentration containing newborn liquid object after surge tank discharge Value obtained from subtracting the value of the dissolved oxygen concentration containing newborn liquid object before will flowing into surge tank.
When the amplitude of increase or the reduction of the dissolved oxygen concentration in process (C) is in above-mentioned preferred scope, easily will The dissolved oxygen concentration of the milk-contained drink of the loading container obtained in process (D) (container collecting process) be reduced to desired value with Under.
The method of operation of the stirrer paddle so small as the amplitude of increase or reduction for making dissolved oxygen concentration, such as Following method can be enumerated：Above-mentioned (i), (ii) any one method in, when liquid storage starts, until can body in receive During holding a certain amount of contain untill newborn liquid object, without the operating of stirrer paddle, then, not make the liquid containing newborn liquid object Face, which produces, to be vortexed or the mode that it significantly rises and falls is made stirrer paddle in the place being spaced with the liquid level containing newborn liquid object It is rotating slowly；Deng.
It should be noted that by using the method for operation of such stirrer paddle, even if the space not into surge tank The interior supply non-active gas such as nitrogen, in the presence of the air (oxygen-containing gas) in the space in full of surge tank, it can also make The amplitude of increase or the reduction of dissolved oxygen concentration containing newborn liquid object is in above-mentioned preferred scope.
Self-evidently, put into by the inside containing newborn liquid object in the space into surge tank and/or surge tank The method of non-active gas, by method to be deaerated containing newborn liquid object in surge tank in surge tank etc., surge tank or upper Device and/or process of the front and rear addition of method or apparatus for the purpose of deoxidation are stated, the dissolved oxygen containing newborn liquid object can be made dense The amplitude of increase or the reduction of degree is effectively in above-mentioned preferred scope.
[process (D)：Container houses process]
Process (D) is will to house to arrive by comprising paper base material layer and nylon tree containing newborn liquid object after the liquid storage in process (C) The process containing newborn liquid object (milk-contained drink) for loading container is obtained in the container that the laminates of lipid layer are formed.
Laminates are, for example, that polyethylene layer, paper base material layer, polyamide resin layer, glue are stacked gradually from the outside of container to inner side Adhesive layer, polyethylene layer and the laminates formed.Wherein, the performance that polyamide resin layer prevents oxygen from passing through is high, can be effectively Suppress to load deterioration of flavor milk-contained drink, as caused by oxygen of container etc..
As the resin for forming polyamide resin layer.It can enumerate：Nylon MXD 6, nylon 6, nylon66 fiber, nylon 46 etc. Various nylon (polyamide).
In the present invention, polyamide resin layer can be to be made up of one kind (for example, nylon MXD 6) in above-mentioned various nylon The form of individual layer is formed, or, can also with the layer that is made up of one kind (for example, nylon MXD 6) in above-mentioned various nylon with by The form of the layered product for the layer that other species (for example, nylon 6) are formed is formed.Alternatively, it is also possible to more than 3 layers of layered product The form of (for example, layered product of the layer of the layer of the layer of nylon 6, nylon MXD 6 and nylon 6) is formed.
It should be noted that the container used in process (D) is not limited to this by comprising paper base material layer and polyamide resin layer The container that laminates are formed, as long as oxygen barrier is higher than the container of the container only formed by the paper base material, the material of container is certain It is unrestricted.
In various nylon, from caused by the combination that can be utilized between the reduction of the dissolved oxygen concentration containing newborn liquid object Cooperative effect particularly marked degree suppress for a long time the deterioration of flavor containing newborn liquid object (milk-contained drink), contaminated bacteria propagation side Face is set out, and preferably uses nylon MXD 6 in the present invention.
Nylon MXD 6 is the polyamide obtained by the polycondensation reaction of m-xylene diamine (MXDA) and adipic acid, is had Following chemical formula.
H[-NHCH2-C6H4-CH2-NHCO-(CH2)4-CO-]nOH
It should be noted that the "-C in the formula6H4- " 2 of (phenyl ring) bonding positions are located at meta.In addition, the n in formula For integer.
Polyamide resin layer in laminates for example preferably comprises the layer being made up of nylon MXD 6.In this case, by nylon The thickness for the layer that MXD6 is formed is preferably more than 1 μm, more preferably more than 3 μm, more preferably more than 5 μm, particularly preferably For more than 7 μm.The upper limit of the thickness is not particularly limited, from cost etc., preferably 50 μm.
As the example for being used to house the container containing newborn liquid object in process (D), roof type paper container etc. can be enumerated.
Wherein, roof type paper container generally houses about 1 liter of (milk-contained drink) containing newborn liquid object, moreover, the sky from gas Between relative to the liquid measure containing newborn liquid object ratio it is small, suppress the deterioration of the flavor containing newborn liquid object, contaminated bacteria propagation effect The high aspect of fruit is set out, and is preferably used in the present invention.But even container beyond roof type paper container, if tool There is the container with the ratio in the space below roof type paper container equal extent, can also obtain the effect equal with the present invention, Therefore can use in the present invention.
The dissolved oxygen concentration containing newborn liquid object before housing in container is preferably below 8ppm, more preferably 7ppm with Under, more preferably below 6ppm, more preferably below 5ppm, more preferably below 4ppm, further preferably For below 3ppm, more preferably below 2ppm, more preferably below 1.5ppm, more preferably below 1ppm.
The dissolved oxygen concentration containing newborn liquid object (milk-contained drink) after housing in container starts at 6 at the time of collecting with oneself Value meter after it is preferably below 8ppm, more preferably below 7ppm, more preferably below 6ppm, more preferably Below 5.5ppm, more preferably below 5ppm, more preferably below 4.5ppm, more preferably below 4ppm, More preferably below 3.5ppm, more preferably below 3ppm, more preferably below 2ppm, more preferably Below 1ppm.It should be noted that these values are value when (for example, 5 DEG C) are stored refrigerated below 10 DEG C.
One of the manufacture system of the milk-contained drink of the loading container of the present invention includes：(a) it is used to contain in newborn liquid object At least a portion of the dissolved oxygen contained removes and obtains the deoxidation treatment unit (example containing newborn liquid object of dissolved oxygen concentration reduction Such as, non-active gas are blown into containing the unit in newborn liquid object, the unit for will be placed in containing newborn liquid object under reduced pressure), (b) be used for the sterili-sation unit (heating unit) for heating to sterilize containing newborn liquid object after handling in the deoxidation treatment unit (a), (c) liquid storage unit (surge tank) containing newborn liquid object and (d) being used to be stored in after handling in sterili-sation unit (b) are used for will Being housed containing newborn liquid object to by the laminates comprising paper base material layer and polyamide resin layer after being stored in liquid storage unit (c) is formed Container in (filling) and obtain load container milk-contained drink container accepting unit (for example, filling machine).Need what is illustrated It is that additional deacidification unit etc., the addition of various units are arbitrary in all or part of of these units.
Embodiment
[embodiment 1]
By the unheated lactogenesis (dissolved oxygen concentration of ox：After 12ppm) housing into tank, (the liquid temperature below 10 DEG C：5℃) Nitrogen is blown into lactogenesis, the dissolved oxygen concentration of lactogenesis is reduced to 1.5ppm.
Then, the lactogenesis is heated to sterilization 2 seconds at 130 DEG C.
The cow's milk that resulting sterilization is finished is imported in surge tank, and ox is continuously carried out by the method for above-mentioned (ii) Inflow and discharge of the breast to surge tank.Now, when inflow of the cow's milk to surge tank starts, until being housed just in can body During untill a certain amount of cow's milk, rotate the stirrer paddle of surge tank.In addition, cow's milk is carried out at the same time to surge tank During flowing into and discharging, in a manner of the liquid level for not making the cow's milk in tank produces and is vortexed or it is significantly risen and fallen, in tank The bottom of main body is rotating slowly the stirrer paddle of surge tank.
The cow's milk discharged from surge tank is filled into roof type paper container (capacity：1 liter) in.Now, it is filled into paper container In before the dissolved oxygen concentration of cow's milk be 1.5ppm.In addition, the laminates for forming paper container are inside from the outside of paper container Side stacks gradually polyethylene layer, paper base material layer, the polyamide resin layer (thickness being made up of nylon MXD 6：10 μm), it is gluing oxidant layer, poly- Pvdf layer and the laminates formed.
By the cow's milk of resulting loading container at a temperature of 5 DEG C after stored refrigerated 6 days, cow's milk in container is determined Dissolved oxygen concentration, it is as a result 3.3ppm.In addition, having carried out sensory evaluation to the cow's milk after stored refrigerated, as a result consumingly feel Feel the salubrious sense of the flavor and pleasant impression of fresh cow's milk.
[embodiment 2]
Except the arrival value for reducing the dissolved oxygen concentration for being blown into lactogenesis caused by nitrogen is changed to from 1.5ppm Beyond 3.0ppm, tested similarly to Example 1.
As a result, the dissolved oxygen concentration of the cow's milk before being filled into paper container is 2.7ppm.In addition, after stored refrigerated 6 days The dissolved oxygen concentration of cow's milk be 3.6ppm.In addition, sensory evaluation is carried out to the cow's milk after stored refrigerated, as a result consumingly Feel the salubrious sense of the flavor and pleasant impression of fresh cow's milk.
[embodiment 3]
Except the arrival value for reducing the dissolved oxygen concentration for being blown into lactogenesis caused by nitrogen is changed to from 1.5ppm Beyond 5.0ppm, tested similarly to Example 1.
As a result, the dissolved oxygen concentration of the cow's milk before being filled into paper container is 4.9ppm.In addition, after stored refrigerated 6 days The dissolved oxygen concentration of cow's milk be 5.1ppm.In addition, sensory evaluation is carried out to the cow's milk after stored refrigerated, as a result consumingly Feel the salubrious sense of the flavor and pleasant impression of fresh cow's milk.
[embodiment 4]
Except the arrival value for reducing the dissolved oxygen concentration for being blown into lactogenesis caused by nitrogen is changed to from 1.5ppm 3.0ppm, by formed paper container laminates polyamide resin layer material be changed to nylon 6 from nylon MXD 6, will be stored refrigerated Beyond at the time of being changed at the time of the measure moment of the dissolved oxygen concentration of cow's milk afterwards is after preserving 6 days after preserving 7 days, with reality Example 1 is applied similarly to be tested.
As a result, the dissolved oxygen concentration of the cow's milk before being filled into paper container is 2.8ppm.In addition, after stored refrigerated 7 days The dissolved oxygen concentration of cow's milk be 4.9ppm.In addition, sensory evaluation is carried out to the cow's milk after stored refrigerated, as a result, strong Feel the salubrious sense of the flavor and pleasant impression of fresh cow's milk in ground.
[embodiment 5]
Except by formed paper container laminates polyamide resin layer material be changed to nylon 6 from nylon MXD 6, will be cold Hide preserve after cow's milk dissolved oxygen concentration the measure moment from preserve 6 days after be changed to preserve 7 days after and preservation 14 days after Beyond each moment, tested similarly to Example 1.
As a result, the dissolved oxygen concentration of the cow's milk before being filled into paper container is 1.5ppm.In addition, stored refrigerated 7 days and The dissolved oxygen concentration of cow's milk after 14 days is respectively 6.5ppm, 6.4ppm.In addition, the cow's milk after stored refrigerated 14 days is carried out Sensory evaluation, as a result it is strongly felt the salubrious sense of pleasant impression.
[comparative example 1]
Except the polyamide resin layer (thickness that will be made up of nylon MXD 6：10 μm) it is changed to polyethylene layer (thickness：10μm) In addition, tested similarly to Example 1.
As a result, the dissolved oxygen concentration of the cow's milk after stored refrigerated 6 days is 8.2ppm.In addition, to the ox after stored refrigerated Breast has carried out sensory evaluation, as a result, except the salubrious sense of the flavor and pleasant impression of feeling fresh cow's milk it is weaker than embodiment 1 with Outside, smell as also feeling egg (sulphur is smelly).
[comparative example 2]
Except the polyamide resin layer (thickness that will be made up of nylon MXD 6：10 μm) it is changed to polyethylene layer (thickness：10μm) In addition, tested similarly to Example 2.
As a result, the dissolved oxygen concentration of the cow's milk after stored refrigerated 6 days is 8.2ppm.In addition, to the ox after stored refrigerated Breast has carried out sensory evaluation, as a result, except the salubrious sense of the flavor and pleasant impression of feeling fresh cow's milk it is weaker than embodiment 2 with Outside, smell as also feeling egg (sulphur is smelly).
[comparative example 3]
Except the polyamide resin layer (thickness that will be made up of nylon MXD 6：10 μm) it is changed to polyethylene layer (thickness：10μm) In addition, tested similarly to Example 3.
As a result, the dissolved oxygen concentration of the cow's milk after stored refrigerated 6 days is 8.4ppm.In addition, to the ox after stored refrigerated Breast has carried out sensory evaluation, as a result, except the salubrious sense of the flavor and pleasant impression of feeling fresh cow's milk it is weaker than embodiment 3 with Outside, smell as also feeling egg (sulphur is smelly).
[comparative example 4]
Except the polyamide resin layer (thickness that will be made up of nylon 6：10 μm) it is changed to polyethylene layer (thickness：10 μm) with Outside, tested similarly to Example 4.
As a result, the dissolved oxygen concentration of the cow's milk after stored refrigerated 7 days is 9.3ppm.In addition, to the ox after stored refrigerated Breast has carried out sensory evaluation, as a result, except the salubrious sense of the flavor and pleasant impression of feeling fresh cow's milk it is weaker than embodiment 4 with Outside, smell as also feeling egg (sulphur is smelly).
[comparative example 5]
Except the polyamide resin layer (thickness that will be made up of nylon 6：10 μm) it is changed to polyethylene layer (thickness：10 μm) with Outside, tested similarly to Example 5.
As a result, the dissolved oxygen concentration of stored refrigerated 7 days and the cow's milk after 14 days is respectively 9.8ppm, 10.0ppm.In addition, Sensory evaluation is carried out to the cow's milk after stored refrigerated, as a result, feel that the salubrious sense of pleasant impression is weaker than embodiment 5.
[inoculation test of pseudomonad]
Same with the method that No. 3091752 publications of Japanese Patent No. are recorded, by the unheated lactogenesis of ox, (dissolved oxygen is dense Degree：Dissolved oxygen 12ppm) is replaced into nitrogen, after the dissolved oxygen concentration for reducing lactogenesis, continuously adds the lactogenesis at 130 DEG C Thermal sterilization 2 seconds.The cow's milk that resulting sterilization is finished is imported in surge tank, and ox is continuously carried out by the method for above-mentioned (ii) Inflow and discharge of the breast to surge tank.Now, when inflow of the cow's milk to surge tank starts, until being housed in can body certain During untill the cow's milk of amount, rotate the stirrer paddle of surge tank.In addition, inflow of the cow's milk to surge tank is carried out at the same time During discharge, in a manner of the liquid level for not making the cow's milk in tank produces and is vortexed or it is significantly risen and fallen, in can body Bottom be rotating slowly the stirrer paddle of surge tank.
The cow's milk discharged from surge tank is filled into roof type paper container (capacity：1 liter) in.Now, it is filled into paper container In before the dissolved oxygen concentration of cow's milk be 2.0ppm.In addition, as the laminates for forming paper container, it is laminated using the following two kinds Piece：Polyethylene layer, paper base material layer, the polyamide resin layer being made up of nylon MXD 6 are stacked gradually from the outside of paper container to inner side (thickness：10 μm), gluing oxidant layer, polyethylene layer and the laminates (invention product) that are formed and except polyamide resin layer is (thick Degree：10 μm) it is changed to polyethylene layer (thickness：10 μm) beyond with laminates that the invention product equally constitute (compared with product).By institute After the cow's milk (invention product and compare product) of obtained loading container conveys 1 day below 10 DEG C respectively, not by each loading container Cow's milk Kaifeng in the case of using syringe sterilely inject the bacterium solution containing pseudomonad, inlet is sterilely sealed, Thus in cow's milk each to reach 1.0 × 104Cfu/ml mode is inoculated with pseudomonad, stored refrigerated at a temperature of 10 DEG C 6 days.It should be noted that the dissolved oxygen concentration before will being inoculated with pseudomonad is 7.0ppm in relatively product, in invention product In be 6.6ppm.The rising of the dissolved oxygen concentration is considered to be led by the oxygen in headroom is dissolved into cow's milk because of conveying Cause.
The viable count of pseudomonad after being preserved 6 days at 10 DEG C is investigated, as a result, be 2.6 in relatively product ×107Cfu/ml, it is 3.9 × 10 in invention product (nylon MXD 6) on the other hand6Cfu/ml, it can confirm that the propagation of contaminated bacteria Suppressed.
And then in addition to nylon MXD 6 is changed into nylon 6, in the same manner as the situation of foregoing invention product (nylon MXD 6) Tested, as a result, in invention product (nylon 6), the viable count after being preserved 6 days at 10 DEG C is 5.8 × 106Cfu/ml, can To confirm than the propagation of contaminated bacteria to be suppressed with above-mentioned comparison condition.
As can be known from the above results, in comparative example 1~3, the dissolved oxygen concentration of the lactogenesis after nitrogen is blown into is 1.5ppm, Under 3.0ppm, 5.0ppm either case, the dissolved oxygen concentration of the cow's milk after stored refrigerated 6 days is up to identical degree (8.2 ~8.4ppm), on the other hand, in embodiment 1~3, the dissolved oxygen concentration as little as 3.3 of the cow's milk after stored refrigerated 6 days~ 5.1ppm。
Particularly understood in the dissolved oxygen concentration of the lactogenesis after nitrogen is blown into is 1.5~3.0ppm embodiment 1~2, The dissolved oxygen concentration of cow's milk after stored refrigerated 6 days is 3.3~3.6ppm, has obtained the very excellent result less than 4ppm.
In addition, from embodiment 4 and comparative example 4 and embodiment 5 and the result of comparative example 5, even if changing nylon Species, it can also obtain the effect of the present invention.
In addition, being understood in terms of flavor, embodiment 1~5 has obtained good result compared with comparative example 1~5, also, In the proliferation test of contaminated bacteria, product of the present invention compared with condition than having obtained good result.

Claims (7)

  1. A kind of 1. manufacture method for the milk-contained drink for loading container, it is characterised in that including：
    By containing the dissolved oxygen contained in newborn liquid object a part remove and obtain dissolved oxygen concentration be reduced to 3.0ppm~ 5.0ppm deoxidation treatment process containing newborn liquid object and
    Being housed containing newborn liquid object after being handled in the deoxidation treatment process is arrived by including paper base material layer and polyamide resin layer Laminates formed container in and obtain load container milk-contained drink container house process,
    The container is housed in process, and the polyamide resin layer for forming the container contains nylon MXD 6.
  2. 2. the manufacture method of the milk-contained drink according to claim 1 for loading container, wherein, the deoxidation treatment process is led to Following method is crossed to carry out：
    Method that described at least a portion containing the dissolved oxygen contained in newborn liquid object is replaced with non-active gas, and/or
    By described at least a portion containing the dissolved oxygen contained in newborn liquid object by degassing and the method that removes.
  3. 3. the manufacture method of the milk-contained drink according to claim 1 or 2 for loading container, wherein, the container houses work In sequence, the dissolved oxygen concentration containing newborn liquid object before housing in the container is below 6ppm.
  4. 4. the manufacture method of the milk-contained drink according to claim 1 or 2 for loading container, wherein, selected from the deoxidation Before treatment process, after the deoxidation treatment process and while the deoxidation treatment process in the more than one stage, Including being heated described containing newborn liquid object come the sterilization process sterilized.
  5. 5. the manufacture method of the milk-contained drink according to claim 1 or 2 for loading container, wherein, housed in the container Before process, including by the liquid storage process being stored into containing newborn liquid object in surge tank.
  6. 6. the manufacture method of the milk-contained drink according to claim 5 for loading container, wherein, in the liquid storage process, adjust The stirring containing newborn liquid object in the surge tank is saved, so that the increase amplitude of the dissolved oxygen concentration containing newborn liquid object is to store up The front and rear difference of liquid is calculated as below 1ppm.
  7. 7. the manufacture method of the milk-contained drink according to claim 1 or 2 for loading container, wherein, the container houses work In sequence, the container is roof type paper container.
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WO2017073477A1 (en) * 2015-10-26 2017-05-04 株式会社明治 Milk-containing beverage production method
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CN107969495B (en) * 2016-10-24 2022-12-30 内蒙古伊利实业集团股份有限公司 Method for prolonging milk storage life
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