CN101304671A - Packaged oxidation-stable oil-in-water emulsion - Google Patents
Packaged oxidation-stable oil-in-water emulsion Download PDFInfo
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- CN101304671A CN101304671A CNA2006800422469A CN200680042246A CN101304671A CN 101304671 A CN101304671 A CN 101304671A CN A2006800422469 A CNA2006800422469 A CN A2006800422469A CN 200680042246 A CN200680042246 A CN 200680042246A CN 101304671 A CN101304671 A CN 101304671A
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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 OR TREATMENT THEREOF
- A23C11/00—Milk substitutes, e.g. coffee whitener compositions
- A23C11/02—Milk substitutes, e.g. coffee whitener compositions containing at least one non-milk component as source of fats or proteins
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Edible Oils And Fats (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Abstract
One aspect of the invention relates to a packaged, oxidation-stable oil-in-water emulsion comprising: 0.1-10 wt .% of oil, said oil containing 0.3-80 g of polyunsaturated fatty acids per liter of emulsion; at least 1 mg/1 of pro-oxidative metal cations; 10-2000 mg/1 of vitamin C; and up to 98 wt.% of water; wherein the container comprising the emulsion holds no headspace and wherein the molar ratio of vitamin C to pro- oxidative metal cations exceeds 1:2. Oxidation of the polyunsaturated fatty acids contained in the emulsion, is effectively prevented, despite the fact that the emulsion contain appreciable amounts of pro-oxidative metal cations and even if the emulsion is produced under conditions in which it is in direct contact with air. Another aspect of the invention relates to a method of preparing a packaged emulsion as defined above.
Description
Technical field of the present invention
The oxidation-stabilized oil-in-water emulsion that the present invention relates to pack, it comprises the oil of 0.1-10wt%, and described oil comprises the polyunsaturated fatty acid of 0.3-80g/rise emulsion.Another aspect of the present invention relates to the manufacture method of the oil-in-water emulsion of above-mentioned packing.
Background of invention
Be to use the oils that comprises the high-load polyunsaturated fatty acid and can cause serious sick problem what the field of Food Chemistry was known.These sick problems are relevant with the oxidation of polyunsaturated fatty acid, cause the formation of volatile, dense flavor molecules (as undersaturated aldehyde).The taste attribute relevant with the oxidation product of polyunsaturated fatty acid comprises " fish ", " cardboard ", " paint ", " oil ", " rancid " and " metal ".
Also known, iron cation even can play strong pro-oxidant at the low concentration of for example 0.1mg/kg.Therefore, comprise and to produce strong sick very fast with the remarkable product of the polyunsaturated fatty acid of the obvious amount of the iron cation combination of concentration.
Know that further the oxidation of polyunsaturated fatty acid can suppress through adding antioxidant.The example of suitable antioxidant comprises the extract of tocopherol, rosemary,, anti-bad blood acyl palmitate, citric acid, ascorbic acid, TBHQ, BHA and BHT.
The oxidation of polyunsaturated fatty acid can also be by guaranteeing that not having oxygen to be present in the product that wherein contains polyunsaturated fatty acid prevents.This can by under oxygen-free atmosphere (for example nitrogen) produce the said goods and/or by having the anaerobic headroom or not having (for example, Tetra Pak in the packing of headroom
) pack this product and realize.
Production requirement precision equipment under oxygen-free atmosphere.And, use oxygen-free atmosphere to be not enough to solve the problem of the oxidation of this polyunsaturated fatty acid.The commercially available oils that is rich in polyunsaturated fatty acid often comprises the polyunsaturated fatty acid of the oxidation that exists with the peroxide form of certain content.These peroxide are nonvolatile and itself does not influence the taste of product.Yet at processing and memory period, these peroxide will be degraded into dense flavor molecules, even when anaerobic.Especially, when pro-oxidant existed, as iron and copper cation, these peroxide became the degraded of aldehyde and other flavor molecules and will carry out with very high speed.The storing temperature that raises also quickens the degraded of these peroxide.
Invention was both stated
The inventor has developed the oxidation-stabilized oil-in-water emulsion of packing, and it comprises the oil of the polyunsaturated fatty acid with high-load, makes up the oxidative cations that helps of basic (substantial) amount.Help oxidative cations,, advantageously be added in this product to provide a certain amount of these essential mineral matters, the essential part of amount every day (RDA) that this a certain amount of expression is recommended as iron and zinc cation.The emulsion of this packing has advantage: although have the polyunsaturated fatty acid of high-load and the oxidative cations of obviously measuring that helps, the oxidative degradation that it can not demonstrate owing to polyunsaturated fatty acid produces sick shortcoming.In fact, the emulsion of this packing can be stored the as many as some months and produce without any significant losing flavour in the condition of sweltering heat.
The inventor has been found that, if if this emulsion is packaged in the container that does not retain headroom and adds the very vitamin C of high concentration in this emulsion, the oxidation of the polyunsaturated fatty acid in comprising the emulsion that helps oxidative cations in addition can obtain prevention effectively, though this emulsion it with condition that air directly contacts under produce.
Detailed description of the invention
Therefore, one aspect of the present invention relates to the oxidation-stabilized oil-in-water emulsion of packing, and it comprises:
The oil of-0.1-10 weight %, described oil comprise the polyunsaturated fatty acid of 0.3-80g/rise emulsion;
-1mg/l's helps oxidative cations at least;
The vitamin C of-10-2000mg/l; With
-the water of 98 weight % at the most;
The container that wherein comprises this emulsion do not retain headroom and wherein vitamin C with help the molar ratio of oxidative cations above 1: 2.
As the term " emulsion of packing " that uses in this article refer to emulsion and adorn as described in the combination of container of emulsion.The container of adorning this emulsion can be any container that can fill in the mode that does not keep headroom in this container with this emulsion.Particularly preferred container is so-called TetraPak
The gas content that refers to the container filled as the term " headroom " that uses in this article.Term " does not retain headroom " and hints that those do not retain the container of headroom basically.Preferably, headroom is represented less than 0.1 long-pending volume % of container contents, more preferably less than 0.01 volume %.Most preferably, headroom is represented 0 volume % of the internal volume of container.
Referring to lipid material as the term " oil " that uses in this article, preferably refer at 30 ℃, more preferably is liquid lipid material in the time of 20 ℃.The example of lipid material comprises triglyceride, Diglyceride, monoglyceride and phosphatide.Most preferably, oil is triglyceride oil.According to particularly preferred embodiment, this emulsion comprises the oil of 0.5wt% at least.
The C that refers to comprise two or more pairs of keys as the term " polyunsaturated fatty acid " that uses in this article
12-C
24Aliphatic acid.This polyunsaturated fatty acid can exist with free fatty and/or as the fatty acid residue form, for example with the fatty acid ester form of glycerine.Preferably, this polyunsaturated fatty acid is involved with the triglyceride form.The concentration of the polyunsaturated fatty acid in this emulsion advantageously surpasses 0.5g/l.
The oxidative cations that helps that exists in the emulsion of this packing is selected from: iron cation, copper cation, zinc cation and their combination.More preferably, this helps oxidative cations to be selected from: iron cation, zinc cation.Most preferably, this to help oxidative cations be the iron cation.In a preferred embodiment of the invention, this emulsion comprises the oxidative cations that helps of fundamental quantity, iron cation in particular, 3mg/l at least for example, 5mg/l at least preferably, more preferably 10mg/l and most preferably 20mg/l at least at least.Usually, the amount that helps oxidative cations that is included in the emulsion of packing is no more than 130mg/l.Preferably the pro-oxidant metal cation exists with the concentration that is no more than 100mg/l, more preferably is no more than 60mg/l, most preferably is no more than 20mg/l.
As the term " vitamin C " that uses in this article comprise ascorbic acid with and any edible salt or ester.Preferably, this product comprises the alkali metal salt of ascorbic acid, for example sodium ascorbate.Ascorbic concentration in this emulsion is preferably 20mg/l at least, 50mg/l at least more preferably, also more preferably 100mg/l and most preferably 250mg/l at least at least.Ascorbic concentration preferably is no more than 1800mg/l, and most preferably it is no more than 1500mg/l.
In order to obtain high oxidation stability, suggestion is used high vitamin C and is helped the molar ratio of oxidative cations (being the iron cation especially).Preferably, described molar ratio surpasses 1: 1, more preferably it surpass 1.5: 1 and most preferably it above 2: 1.
This emulsion usually comprises the water of 75wt% at least, and more preferably, this emulsion comprises the water of at least 80 weight %.The amount that is included in the water in this emulsion preferably is no more than 95wt%.
Significant advantage of the present invention is that this emulsion can not need to use the equipment that moves to produce under oxygen-free atmosphere.As a result, this emulsion, especially after preparation soon, usually comprise the oxygen of 0.1ppm at least, preferably the oxygen of 0.2ppm at least.The amount that is included in the oxygen in this emulsion preferably is no more than 10ppm.More preferably, described amount is no more than 5ppm, and most preferably it is no more than 2ppm.Because direct contact between emulsion components and air, aerobic not only, and have carbon dioxide and nitrogen will be introduced in the emulsion of packing.Usually, this emulsion comprises the nitrogen of 0.3mg/l at least, preferably the nitrogen of 1mg/l at least.And it is at least 1: 2500 carbon dioxide and nitrogen that this emulsion usually comprises weight ratio.
When the emulsion of this packing is when producing in the presence of air, the oil in the emulsion of this packing comprises the oxidation polyunsaturated fatty acid of the peroxide form of significant quantity usually.In preferred embodiments, this emulsion is produced when having air, and in such cases, the oil that is present in the emulsion of packing usually has at least 0.5 peroxide value.
Vitamin C can prevent oxidative degradation, because it is more oxidized more quickly than polyunsaturated fatty acid, unless it is oxidized to very high degree, otherwise does not cause sick generation.When not utilizing oxygen-free atmosphere to produce this emulsion, this is preferred, is present in oxygen in the emulsion with the vitamin C in the emulsion of being present in of oxidation signal portion.Usually, be present in ascorbic at least 5% in the emulsion, preferably at least 10% is oxidized.
Under emulsion comprised polyunsaturated fatty acid situation to the oxidation extreme sensitivity, benefit of the present invention was especially outstanding.Generally speaking, the sensitiveness of oxidation is along with the number that is present in the two keys in the aliphatic acid increases with exponential manner.According to particularly preferred embodiment, polyunsaturated fatty acid comprises at least three two keys.According to more preferred, this emulsion comprises 10mg/l at least, and the omega-fatty acid of 50mg/l at least preferably is selected from the omega-fatty acid of DHA (DHA), EPA (eicosapentaenoic acid) and its combination in particular.Usually, be included in DHA in this emulsion and the combined amount of EPA and be no more than 3g/l, preferably it is no more than 1g/l.
This product can advantageously be used to provide the optimization balance of important nutrient.Therefore, this emulsion preferably comprises:
0.5-8 weight % protein;
1-6 weight % oil;
6-20 weight % carbohydrate;
Other optional nutrition compositions of maximum 5 weight %.
The example of the nutrition composition of other that can advantageously be introduced into comprises: vitamin, phytosterol, polyphenol, flavonoids, carotenoid or the like.
The liquid that this emulsion is preferably dumpable.More preferably, emulsion is a thin liquid, as passing through at 10s
-1Viscosity proved by 5-200mPa.s, preferably at 10s
-1Be 5-100mPa.s.The viscosity of emulsion is passed through Rheometer
AR1000 uses 0.01-250s
-1Shearing rate scan (shear rate sweep) (at 510s) and the cone angle cone-plate formula measuring system that is 2: 0: 38 (degree: minute: second) (cone diameter is that 40 millimeters and cut-out (truncation) are 54 microns) measure suitably.Preferably, viscosity is to measure 20 ℃ temperature.
The oil that is included in this emulsion preferably comprises at least 50 weight %, the height unsaturated oils of at least 80 weight % more preferably, it is selected from marine oil (for example fish oil or algae oil), rapeseed oil, olive oil, soya-bean oil, sunflower oil, Linseed oil, cashew nut oil, nut oil, peanut oil canola oil (canola oil) and its combination.According to particularly preferred embodiment, this emulsion comprises the marine oil of at least 0.01 weight %.
In order to guarantee that this emulsion is sufficiently stable to syneresis, flocculation and creaming, preferably, oil is with diameter D
3,2Dispersed droplets existence for 0.1-3 μ m is preferably 0.3-2 μ m.D
3,2Diameter (that is surface weighted average diameter) is by the Helos of laser diffraction, use and the combination of 632.8nm laser
TMLaser diffraction sensor (from Sympatec GmbH) is measured suitably.Measurement is at 20 ℃, use QUIXEL
TMWet distributor (from Sympatec GmbH) carries out (in optics (optical) concentration of 10-20%).
According to another preferred embodiment, this emulsion comprises 0.1-15 weight %, the starch ingredients of 1-10 weight % more preferably, and it is selected from native starch, modified starch and its combination.Adding starch ingredients has the following advantages: it has been stablized emulsion and digestible carbohydrate is provided simultaneously.
The emulsion of this packing is significantly oxidation, even be under the extreme storage condition when it, as several weeks 40 ℃ the time.According to particularly preferred embodiment, the emulsion of packing can be stored under 40 ℃ of temperature and surpass for 8 weeks, more preferably at least 15 weeks and do not produce unacceptable sick.
In order to guarantee enough storage stabilities, the emulsion that this emulsion is preferably aseptic.The pH of emulsion is preferably 4-8.More preferably, the pH of emulsion is 5-7.5, and more (mot) is preferably 6.5-7.
The oxidation stability of the emulsion of this packing does not need to use efficient antioxidants (as BHA, BHT and TBHQ) and obtains.Therefore, in preferred embodiments, emulsion does not comprise the antioxidant that is selected from BHA, BHT and TBHQ.
Another aspect of the present invention relates to the preparation as the method for the emulsion of previously defined packing in this article, and described method comprises:
With oil, help oxidative cations, vitamin C and water to be combined in the pre-emulsion;
This pre-emulsion of homogenising;
To the emulsion sterilization after the homogenising; With
Emulsion after this sterilization is packaged in the container that does not retain headroom;
Wherein this pre-emulsion comprises the oxygen of 0.1ppm at least.
The present invention further specifies by following examples.
Embodiment 1
In open containers, weigh 29.9kg water and be heated to 80 ℃.Skimmed milk power and the potassium phosphate of 0.1kg and list/Diglyceride (HV-52K Danisco) premixed of 40g with 2.88kg.This mixture is dispersed in the hot water under high-speed mixing, and under suitable mixing by hydration 15 minutes.The oily blend that comprises 0.95%DHA is that 97.8: 2.2% soya-bean oil and DHA concentrate produced by usage rate, and this DHA concentrate is based on the algae oil from Nutrinova.1.06kg this miscella under high-speed mixing, add and carry out pre-emulsification 15 minutes by suitable mixing.3.76kg maltodextrin DE20 and the natural starch of 0.2kg be dispersed in this pre-emulsion.
Vitamin/mineral and coloring components (for example caramel) are mixed in the blend of the vitamin C (as sodium ascorbate) that comprises 5g ferrous fumarate and 37.2g.This blend joins in the pre-emulsion.Then, the sugar with 1.6kg joins in this pre-emulsion.The level of spices with needs joined in this pre-emulsion.Detect pH, whenever pH be lower than＜6.7 o'clock, proofread and correct pH by using phosphate buffer.Ascorbic final concentration equals 930mg/kg and Fe
2+Final concentration is 43mg/kg.
This product is homogenized 1 75-250 crust and 65-70 ℃, after this carries out the UHT processing in-4 seconds at 140 ℃.After this, product is cooled to 25-30 ℃ and sterilely fill in the aluminium bag and do not have headroom.
This product is stored and taste is estimated at 40 ℃.Below list taste appraisal result's (on average being higher than n=5) of panel of expert.
| Time (storing temperature) | Taste score value (0-10) |
| 1 day (7 ℃) | 6.3 |
| 4 weeks (40 ℃) | 6.9 |
| 2 months (40 ℃) | 6.5 |
| 3 months (40 ℃) | 6.6 |
After 2 months, the analysis level of vitamin C is 554mg/kg.These results prove that the emulsion of packing is extremely oxidation-stabilized, because do not produce significant losing flavour between the storage life of its prolongation under extreme conditions, even this product comprises the unsettled polyunsaturated fatty acid of the height of obvious amount.The minimizing of observed Vit C contents shows that vitamin C is preferentially oxidized at memory period.
Claims (16)
1. the oxidation-stabilized oil-in-water emulsion of a packing comprises:
0.1-10 the oil of weight %, described oil comprise the polyunsaturated fatty acid of 0.3-80g/rise emulsion;
At least 1mg/l's helps oxidative cations;
The vitamin C of 10-2000mg/l; With,
The water of 98 weight % at the most;
The container that wherein comprises this emulsion do not retain headroom and wherein vitamin C surpass 1: 2 with the molar ratio that helps oxidative cations, preferably above 1: 1.
2. according to the emulsion of the packing of claim 1, wherein this emulsion comprises the oxygen of 0.1ppm at least.
3. according to the emulsion of the packing of claim 1 or 2, wherein oil has at least 0.2 peroxide value.
4. according to each the emulsion of packing of front claim, wherein to comprise the nitrogen of 0.3mg/l at least and comprise weight ratio be at least 1: 2500 carbon dioxide and nitrogen to this emulsion.
5. according to each the emulsion of packing of front claim, wherein at least 5% vitamin C is oxidized.
6. according to each the emulsion of packing of front claim, wherein this to help oxidative cations be the iron cation.
7. according to each the emulsion of packing of front claim, wherein polyunsaturated fatty acid comprises at least three two keys.
8. according to each the emulsion of packing of front claim, wherein this emulsion comprises 10mg/l at least, the polyunsaturated fatty acid of 50mg/l at least preferably, and it is selected from DHA (DHA), eicosapentaenoic acid (EPA) and its combination.
9. according to each the emulsion of packing of front claim, wherein this emulsion comprises:
0.5-8 weight % protein;
1-6 weight % oil;
6-20 weight % carbohydrate;
The nutrition composition of optional other of maximum 5 weight %.
10. according to each the emulsion of packing of front claim, described emulsion is at 10s
-1Viscosity be 5-200mPa.s.
11. according to each the emulsion of packing of front claim, wherein this oil comprises the height unsaturated oils of at least 50 weight %, and it is selected from marine oil, rapeseed oil, olive oil, soya-bean oil, sunflower oil, Linseed oil, cashew nut oil, nut oil, peanut oil canola oil and its combination.
12. according to each the emulsion of packing of front claim, wherein should oil with diameter D
3,2Be 0.1-3 μ m, the dispersed droplets that is preferably 0.3-2 μ m exists.
13. according to each the emulsion of packing of front claim, wherein this emulsion comprises the starch ingredients of 0.1-15 weight %, it is selected from native starch, modified starch and its combination.
14. according to each the emulsion of packing of front claim, wherein, emulsion does not comprise the antioxidant that is selected from BHA, BHT and TBHQ.
15. according to each the emulsion of packing of front claim, wherein the emulsion of this packing can be stored under 40 ℃ of temperature and surpass for 15 weeks and do not produce unacceptable sick.
16. preparation comprises according to each the method for emulsion of packing of front claim:
With oil, help oxidative cations, vitamin C and water to be combined in the pre-emulsion;
This pre-emulsion of homogenising;
To the emulsion sterilization after the homogenising; With
Emulsion after this sterilization is packaged in the container that does not retain headroom;
Wherein this pre-emulsion comprises the oxygen of 0.1ppm at least.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP05077589 | 2005-11-14 | ||
| EP05077589.9 | 2005-11-14 | ||
| EP06075496.7 | 2006-03-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101304671A true CN101304671A (en) | 2008-11-12 |
Family
ID=36143197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800422469A Pending CN101304671A (en) | 2005-11-14 | 2006-10-19 | Packaged oxidation-stable oil-in-water emulsion |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101304671A (en) |
| ZA (1) | ZA200804543B (en) |
-
2006
- 2006-10-19 ZA ZA200804543A patent/ZA200804543B/en unknown
- 2006-10-19 CN CNA2006800422469A patent/CN101304671A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| ZA200804543B (en) | 2009-10-28 |
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Open date: 20081112 |