- #1
Phrak
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Does a mixture of sugars have a Eutectic?
In summary, a mixture of sugars has a eutectic. I don't know the answer to this one, but my first guess would be no they are miscible in all proportions, since there are many commercial mixtures of treacle and syrup out there.
- #2
Studiot
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I don't know the answer to this one, but my first guess would be no they are miscible in all proportions, since there are many commercial mixtures of treacle and syrup out there.
Toffee and fudge, of course, contain water and fat as well.
Toffee and fudge, of course, contain water and fat as well.
- #3
Phrak
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Studiot said:
A eutectic is a mimum where the temperature of solidification from the liquid phase is least for different proportions of two compounds. The example I'm familiar with is lead and tin. I imagine two missible liquids like water and ethanol will also have a eutectic, or two different sugars like lactose and dextrose as well, though I really don't know.
- #4
Studiot
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I know what a eutectic is.
You do not get eutectics when the two substances are miscible in all proportions.
You do not get eutectics when the two substances are miscible in all proportions.
- #5
DrDu
Science Advisor
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Studiot said:
Only if they are miscible in all proportions in the solid state. I don't know whether this is true for sugars. Furthermore, the determination of the melting point for sugars is quite a mess as they tend to exist in various configurations (alpha and beta aldoles, dimers ...) and for many sugars the melting cannot be separated from decomposition.
- #6
Phrak
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I don't know what ya'all are talking about, Studiot. You can't even separate lead and tin into regions of solid state and liquid state but must include two others. There are regions on the ratio vs. temperature graph that are mixtures of both solid and liquid phase.
Lead and Tin have a Eutectic, they are missible in all proportions at the temperature above that of solidification of the maxima of both Lead or Tin.
...I just wanted to know how the manufactures of Pop Rocks decided to mix 3 sugars together to make their product successful...
Lead and Tin have a Eutectic, they are missible in all proportions at the temperature above that of solidification of the maxima of both Lead or Tin.
...I just wanted to know how the manufactures of Pop Rocks decided to mix 3 sugars together to make their product successful...
Last edited:
- #7
Studiot
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Here are sketches of two phase diagrams to clarify matters. One is the tin-lead system the other is the copper-nickel system.
As you rightly observe the tin-lead system has a eutectic point at 36% lead.
This is because liquid tin and liquid lead are miscible in all proportions, but solid tin and solid lead are not. That is they cannot form a solid solution because their lattices are incompatible. So any solid is a mixture of solid tin + solid lead.
On the other hand copper and nickel are miscible in all proportions in both the liquid and solid state so form an alloy at any composition in the solid. There is no eutectic in the phase diagram. The freezing and melting lines are different, as required by the phase rule.
I am sorry I have no such information for sugars.
Attachments
- #8
Phrak
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Studiot said:
Interesting. I'd forgotten about crystaline structures that can contain a pair of elements in any proportion. Is the term missible really used to talk about solid phases? This is unfamiliar to me.
Also we can have amorphous, or semi-amorphous solid states to further confuse the issue.
Equally, I hadn't considered that there may not be a eutectic minum between two or more compounds.
Thanks for the help.
- #9
Studiot
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Perhaps not often since miscible really implies that you can add one to the other and stir. Solid solution is more often used. There is more than one type of solid solution. Substitutional as in the case of cupro-nickel system and insterstitial as in the case of carbon and iron.
Some of the data came from what is IHMO the best Physical Chemistry text ever written,
Physical Chemistry by Moore.
He has a good chapter or three on this stuff.
go well
What is a eutectic sugar mixture?
A eutectic sugar mixture is a combination of two or more sugars that has a lower melting point than any of the individual sugars. This occurs due to the formation of a unique crystalline structure when the sugars are mixed together.
How does the eutectic potential of a sugar mixture affect its properties?
The eutectic potential of a sugar mixture can greatly impact its properties, such as its melting point, solubility, and stability. This is because the formation of a eutectic mixture can disrupt the crystalline structure of the individual sugars, altering their physical and chemical properties.
What are the effects of eutectic sugar mixtures on food products?
Eutectic sugar mixtures can have various effects on food products, depending on the specific sugars and proportions used. They can improve texture, flavor, and shelf life, but they can also cause undesirable changes such as stickiness or reduced sweetness.
How can eutectic sugar mixtures be controlled in food production?
Eutectic sugar mixtures can be controlled in food production by carefully selecting the types and ratios of sugars used, as well as controlling the temperature and processing conditions. Addition of other ingredients, such as anti-caking agents, can also help prevent the formation of eutectic mixtures.
What are some common examples of eutectic sugar mixtures in food products?
Some common examples of eutectic sugar mixtures in food products include chocolate, ice cream, and various confectioneries. These products often contain a combination of sugars, such as sucrose, glucose, and fructose, which form eutectic mixtures and contribute to their unique properties.
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