Stickiness in hard candy (2024)

Stickiness in hard candy (1)

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Anas Poozhikkuth Stickiness in hard candy (2)

Anas Poozhikkuth

Quality Control Technician at Walmart Canada

Published Jun 10, 2022

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With a modest increase in moisture, glass transition temperature (Tg )drops dramatically. If used a high DE glucose syrup, you'll end up with too many low molecular weight sugars, resulting in a sticky candy with a reduced glass transition temperature (Tg). 42DE is a commonly used glucose syrup for hard candy. Higher levels of glucose syrup in the recipe (50–60% dry basis) avoid sucrose crystallization but result in stickiness and less sweet candies.

The addition of more liquid flavor lowers the glass transition temperature (Tg), making candies more susceptible to changes during storage, resulting in graining, taste loss, and cold flow.

If there is more acid in hard candy, it will invert and become sticky. Check the acidity of the filling as well. Acids promote sucrose inversion, especially at high temperatures, and are added after cooking, along with flavorings. The sucrose inversion at high temperature and low pH produces glucose and fructose, resulting in unstable candies with lower glass transition temperature and more stickiness, , and graining (crystallization) and shorter shelf life. (Acids should be added as a powder.)

To counteract potential inversion issues, buffer salts like sodium citrate can be employed.Bicarbonate and organic acids may be present in powdered centers to generate a fizzy effect when eaten. However, two components must be maintained separate, which is commonly accomplished by covering one of the products with a fat layer. If penetrated inside hard candy it might cause sucrose inversion and softening.

A hard candy with a higher percentage of invert sugar has a lower quality and has a shorter shelf life. Because of the greaterhygroscopicity and low glass transition temperature. Stickiness is common in candy with a high fructose content, weatherthrough direct addition or sucrose inversion.

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For hard candy, a common target range of total DE is 16-18%. Concentrated hard candy has an equilibrium related humidity of 20-30%, Relative humidity more than 30%, hard candy will absorb moisture.

Because of the variation in moisture content between the center and the surface, water molecules in the surrounding can only permeate into the sugar glass. Water migration to the bulk of the sugar glass is very slower; sugar candy exposed to damp air can take up to a month to reach equilibrium in terms of moisture content across the candy. Because moisture migration to the interior is slower than water molecule absorption to the surface.

Sugar has a sticking point that is around 10 degrees Celsius higher than its glass transition temperature Tg value.

Other reasons are

Stickiness will result from a low cooking temperature.

Packing materials that aren't up to snuff.

In the processing area, there is more humidity.

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Carol Levy

sole employee at It's A Whimsy (r)

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I just wanted to find out what to do because hard candy I made is sticky. Very good article but, and I don't mean to be smart, I wasn't looking for a science lesson.

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Anas Poozhikkuth

Quality Control Technician at Walmart Canada

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References R. Lees. (n.d.). Sugar Confectionery and Chocolate Manufacture. Retrieved from https://books.google.ca/books/about/Sugar_Confectionery_and_Chocolate_Manufa.html?id=75zTBwAAQBAJ&source=kp_cover&redir_esc=yRichard W. Hartel, Joachim H. Von Elbe. (2017, October 17). CONFECTIONERY SCIENCE AND TECHNOLOGY. Retrieved from https://www.chapters.indigo.ca/en-ca/books/confectionery-science-and-technology/9783319617404-item.html

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Stickiness in hard candy (2024)

FAQs

Stickiness in hard candy? ›

Why is my hard candy soft and sticky? The simple answer is that there is too much moisture in your candy. One or more factors could be contributing to this problem. In hard candy making

candy making
Candy making or candymaking is the preparation and cookery of candies and sugar confections. Candy making includes the preparation of many various candies, such as hard candies, jelly beans, gumdrops, taffy, liquorice, cotton candy, chocolates and chocolate truffles, dragées, fudge, caramel candy, and toffee.
https://en.wikipedia.org › wiki › Candy_making
, it is important to cook all the water out of the sugar/corn syrup/water mixture.

What makes hard candy sticky? ›

If there is more acid in hard candy, it will invert and become sticky. Check the acidity of the filling as well. Acids promote sucrose inversion, especially at high temperatures, and are added after cooking, along with flavorings.

How to keep hard candy from getting sticky without? ›

Avoid Moisture Mixes.

Storing these sweets in the same container will cause the harder candies to become sticky. To make sure that hard candies stay hard, sprinkle with finely ground sugar and store in an airtight jar.

What does cream of tartar do in hard candy? ›

How it helps Candy Making. Adding cream of tartar when you're making candy helps prevent the creation of sugar crystals. That's why lots of icing, syrup or candy recipes call for it: it makes it so the end product doesn't have large crunchy sugar capsules.

What is the science behind hard candy? ›

A supersaturated solution is unstable—it contains more solute (in this case, sugar) than can stay in solution—so as the temperature decreases, the sugar comes out of the solution, forming crystals. The lower the temperature, the more molecules join the sugar crystals, and that is how rock candy is created.

What makes candy canes sticky? ›

What makes candy sticky? Most of the time, the candy gets sticky due to humidity, so it's preventable by using airtight containers next time. Any hard candy can be remelted with a little water and made into new candy.

How long does sticky candy last? ›

After about 6 months, the colours will fade a little, and the texture will change. You can still eat it, but it won't be quite as beautiful.

What removes sticky candy? ›

Dip a clean rag or cloth in the vinegar and blot the affected fabric with the moistened cloth. Once it is fairly damp, let it sit for fifteen minutes. Rinse again and blot with a dry rag. If the sticky candy or remaining stain is still there, you can use an adhesive remove such as Goo Gone to try to remove it.

How do you make candy sticks softer? ›

How do you soften hard candy? The only way to soften it is to put it in water and let it melt.

What does vinegar do to candy? ›

But acetic acid reacts only with certain kinds of substances—and sugar isn't one of them. In fact, candy might dissolve more slowly in vinegar, since the acetic acid molecules don't dissolve sugar as well as water does.

Why is my candy not hardening? ›

In hard candy making, it is important to cook all the water out of the sugar/corn syrup/water mixture. If the sugar mixture is not cooked to the proper temperature (the hard-crack stage 300-310° F {149-154° C.} or if you are working in a kitchen with high humidity, chances are your candy is retaining too much moisture.

What is a substitute for cream of tartar in candy? ›

Substitute: Lemon juice

Lemon juice has similar levels of acidity to cream of tartar, and can be used in much the same way. It can be added to baked goods alongside baking soda to make them rise, will help stabilise meringues and whipped cream, and prevents large crystals from forming in homemade candies.

Why do you need corn syrup in hard candy? ›

Provides Smooth Texture: Corn syrup helps to create a smooth and glossy texture in candies, ensuring that they are not grainy or gritty. 3. Adds Moisture and Shine: Beyond candy making, corn syrup can be used to add moisture and a glossy finish to dessert sauces and frostings.

What makes hard candy harden? ›

The process of turning sugar into a hard, smooth, transparent confection involves heating a sugar/corn syrup/water solution to 300 – 310° F. {150 - 155° C.}, or what is known as the hard crack stage of sugar. The use of a candy thermometer is not essential, but highly recommended and accuracy is critical.

Should you bite hard candy? ›

Just Say No to Hard Candy

The hard texture of the candy can cause severe damage to your teeth. If you get tired of sucking on a hard candy and decide to crunch it up by biting down on it, you could crack or chip a tooth or cause damage to previous dental work, such as fillings, dental bridges, or dental crowns.

What is the hardest hard candy? ›

Jolly Ranchers are also the hardest of the hard candies—they're like concentrated and pressurized diamonds of fruity sugar.

Why are my hard boiled sweets sticky? ›

Boiled sweets are susceptible to heat and moisture, and people usually notice their boiled sweets get sticky in the summer. As boiled sweets have no moisture content inside, they'll naturally seek out any moisture when exposed to air - which means an open bag of sweets will turn into a sticky mess.

What does citric acid do to hard candy? ›

In candy making, it's used to add sourness, similar to the way vinegar adds tang to salad dressings. The strength of citric acid is notable, so a little goes a long way. For candy making, it's available in a powdered form, which is what you'll be using to make your sour candies.

What causes divinity to be sticky? ›

Consider this: divinity hates humidity. It's best to make divinity on a cool, dry day. If it's humid (over 50%) or rainy, the candy might end up with a more gooey, or grainy texture.

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