Polyols: what they are and how to use them
Polyols, also known as sugar alcohols, are sweetening agents belonging to the carbohydrate family. They are naturally found in small amounts in certain fruits and vegetables, but are also used as ingredients in sugar-free, low-sugar, or health-conscious products.
They have a sweet taste similar to sugar but generally provide fewer calories and have a lower glycemic impact than traditional sugar. Among the most common polyols are: erythritol, xylitol, sorbitol, maltitol, isomalt. They are not all the same: they differ in sweetness, caloric content, intestinal tolerability, performance in recipes, and impact on the final taste.
On Over Low Carb, you'll find OK Green, a sweetener based on erythritol and stevia, designed for beverages, yogurts, creams, desserts, and baked goods.
Why are polyols used?
Polyols are primarily chosen because they allow for sweetness without using traditional sugar. They are appealing for those who want to reduce sugars and carbohydrates in everyday cooking, for those following a low-carb or ketogenic diet, or for those seeking sweeteners more suitable for preparations without added sugars. Their main advantage is not "performing miracles," but offering a practical solution for controlled sweetening.
Polyols and glycemic index
Polyols generally have a lower glycemic index than sugar. This means that, all else being equal, they tend to have a lower impact on the glycemic response compared to sucrose.
- erythritol: very low glycemic index, often reported as close to 0;
- xylitol: low glycemic index;
- sorbitol: low glycemic index;
- maltitol: higher glycemic index than other polyols, but still lower than sugar.
This does not mean that all polyols are equivalent, nor that a product containing polyols is automatically suitable for every dietary need. Those following a strict ketogenic diet or with specific metabolic conditions should always evaluate the ingredients, quantities, and overall nutritional values of the product.
Fewer calories than sugar
Compared to sugar, many polyols provide fewer calories. Roughly: erythritol about 0.2 kcal/g; xylitol about 2.4 kcal/g; sorbitol about 2.6 kcal/g; maltitol about 2.1 kcal/g. Traditional sugar provides about 4 kcal per gram. This makes polyols interesting when you want to reduce the caloric intake associated with sweetness, without completely eliminating the sweet taste from beverages, desserts, or homemade preparations.
Polyols and dental health
Unlike sugar, polyols are not utilized by mouth bacteria in the same way. This is why they are often found in sugar-free chewing gum and candies. Xylitol, in particular, is one of the most well-known polyols in this area.
Replacing sugar with polyols can be useful in a more mindful dietary strategy, but it does not replace oral hygiene and normal good daily habits.
Polyols, intestine, and microbiota
Polyols are not all absorbed in the same way. A portion can reach the intestine and, depending on the type of polyol and the quantity consumed, can be fermented by intestinal bacteria. For some people, this may be well tolerated. For others, especially if sensitive or consuming large amounts, bloating, flatulence, cramps, or diarrhea may occur.
They should not be considered "sugar without consequences": they are useful ingredients, but quantity matters.
Polyols: side effects and moderation
Polyols can have gastrointestinal effects if consumed in large quantities. The most common problem is the laxative effect, especially with certain polyols and in more sensitive individuals. For this reason, food products containing more than 10% added polyols must carry the warning:
“Excessive consumption may produce laxative effects.”
The practical rule is simple: it's best to start with small quantities and assess your individual tolerance.
Polyols in sugar-free sweeteners
Polyols are widely used in sugar-free sweeteners because they allow for sweetness with fewer available sugars. In low-carb cooking, they can be useful for: sweetening coffee, tea, and beverages; preparing yogurts, creams, and desserts; making low-carb sweets; reducing or replacing sugar in some recipes.
Sugar doesn't just provide sweetness. In many recipes, it also contributes to volume, structure, moisture, color, and caramelization. This means polyols can replace the sweetness of sugar, but they cannot always perfectly replace all its technical functions.
Erythritol: the most interesting polyol in low-carb
Among polyols, erythritol is one of the most used in the low-carb and keto world. It is valued for its very low caloric content, no sugar, and generally cleaner taste compared to other sweeteners. It is suitable for: hot and cold beverages, yogurts, creams, desserts, low-carb sweet preparations, baked goods, and homemade recipes. Naturally, erythritol must also be dosed correctly: using too much can alter the final taste or give a fresh sensation in the mouth, typical of some polyols.
Polyols and Over Low Carb products
In our e-commerce, we offer selected low-carb sweeteners for those who want to reduce sugars and carbohydrates in their daily cooking. An example is OK Green, a sweetener based on erythritol and stevia, with 0 kcal per 100 g, 0 g of sugars, and 100 g of polyols per 100 g. It is suitable for beverages, yogurts, creams, desserts, baked goods, and more technical preparations.
You can also find other products in the Sugar-free Sweeteners collection, designed to complete your daily low-carb pantry.
Frequently asked questions about polyols
Are polyols sugars?
No. Polyols are sweetening substances belonging to the carbohydrate family, but they do not behave exactly like traditional sugar. They have sweetening power, but generally provide fewer calories and have a lower glycemic impact than sucrose.
Are polyols suitable for a low-carb diet?
They can be useful in a low-carb diet, especially when used to replace sugar in beverages, creams, desserts, or homemade sweets. The important thing is to always check the type of polyol, the quantity used, and the nutritional values of the final product.
What is the difference between erythritol and maltitol?
Erythritol has a very low caloric content and is widely used in the low-carb world. Maltitol has a sweetening power similar to sugar, but also has a more significant caloric and glycemic impact compared to erythritol. For this reason, in low-carb or ketogenic diets, erythritol is often preferred over maltitol.
Can polyols cause intestinal discomfort?
Yes, especially if consumed in large quantities or by sensitive individuals. The most common effects can be bloating, flatulence, cramps, or a laxative effect. It is therefore best to use polyols in moderation and gradually increase quantities only if well tolerated.
Which polyol-based sweetener can I use in cooking?
It depends on the use. For beverages, yogurts, creams, desserts, and baked goods, you can use an erythritol and stevia based sweetener like OK Green. To choose the most suitable product, consider the format, sweetening power, taste, ingredients, and type of recipe.
Conclusion
Polyols are interesting sweeteners for those who want to reduce sugars and carbohydrates without completely giving up the sweet taste. They are not magic ingredients and should not be used indiscriminately, but they can be useful in everyday cooking, especially if carefully integrated into a low-carb or ketogenic diet.
Among the best-known polyols, erythritol is one of the most appreciated for its low caloric content and versatility. The important thing is to choose the right sweetener, use it in correct quantities, and remember that in low-carb, it's not just about removing sugars or carbohydrates. What you put in their place also matters.