Maltitol Syrup: A Comprehensive Guide to This Low-Glycemic Sweetener
Answer Snapshot
- What it is: A sugar alcohol (polyol) syrup produced by hydrogenating maltose from starch, with 90% the sweetness of sucrose
- Safety consensus: JECFA, FDA, and EFSA confirm safety with an ADI of 0-25 mg/kg body weight; generally recognized as safe (GRAS)
- Common uses: Sugar-free candies, baked goods, beverages, oral care products, and functional foods
- Blood sugar impact: Low glycemic index (GI ~35) with minimal insulin response; ~2.4 kcal/g theoretical caloric value
- Who should be careful: Individuals with irritable bowel syndrome (IBS) or sensitive digestive systems (may cause bloating at high intake)
- Label names / aliases: Maltitol syrup, hydrogenated maltose syrup, INS 965(ii), E965(ii)
Quick Facts Table
| Parameter | Details |
|---|---|
| Ingredient Name | Maltitol Syrup |
| INS Code | 965(ii) |
| Functional Class | Sweetener, Humectant, Texturizer, Bulking Agent |
| Sweetness Potency | 90% relative to sucrose (table sugar) |
| Caloric Value | ~2.4 kcal/g (theoretical), ~1.5-2.0 kcal/g practical (due to incomplete absorption) |
| ADI | 0-25 mg/kg body weight (JECFA, 1999) |
| Stability | Heat stable up to 180°C; pH stable between 3.0-8.0 |
| Blood Sugar Impact | Low glycemic index (GI ~35); minimal insulin response |
| Typical Label Names | Maltitol syrup, hydrogenated maltose syrup, INS 965(ii), E965(ii) |
What is Maltitol Syrup (INS 965(ii))?
Maltitol syrup is a sugar alcohol (polyol) sweetener produced through the hydrogenation of maltose, which is derived from starch sources like corn, wheat, or tapioca. The manufacturing process involves breaking down starch into maltose using enzymes, then hydrogenating the maltose to create maltitol. The resulting syrup typically contains 75-85% maltitol, with smaller amounts of other polyols like sorbitol and maltotriitol.
As a polyol, maltitol syrup has a chemical structure similar to sugar but with an additional hydrogen molecule, which affects its absorption and metabolism in the body. It has 90% the sweetness of sucrose (table sugar) with a clean, sugar-like taste and no bitter aftertaste common in some other sugar alcohols.
Is Maltitol Syrup Safe to Consume?
Yes, maltitol syrup is considered safe for consumption by leading food safety authorities worldwide. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) established an Acceptable Daily Intake (ADI) of 0-25 mg/kg body weight in 1999, which was reaffirmed in 2018. This means a 70 kg adult can safely consume up to 1.75 grams of maltitol per day, though typical dietary intake is much lower.
The U.S. Food and Drug Administration (FDA) has granted maltitol syrup Generally Recognized As Safe (GRAS) status, and the European Food Safety Authority (EFSA) has confirmed its safety for use in food products. Like other sugar alcohols, excessive consumption (more than 50-100 grams per day for most adults) may cause digestive discomfort such as bloating, gas, or diarrhea in sensitive individuals, but these effects are temporary and not harmful.
Does Maltitol Syrup Raise Blood Sugar or Affect Metabolism?
Maltitol syrup has a low glycemic index (GI) of approximately 35, compared to sucrose's GI of 65. This means it causes a slower, more gradual increase in blood glucose levels than table sugar. Unlike sucrose, which is fully absorbed in the small intestine, only about 50-70% of maltitol is absorbed directly into the bloodstream. The remaining portion is fermented by bacteria in the large intestine, producing short-chain fatty acids that provide some caloric energy but minimal glucose response.
The theoretical caloric value of maltitol is ~2.4 kcal/g, but the practical caloric impact is lower (1.5-2.0 kcal/g) due to incomplete absorption. This makes maltitol syrup a popular choice for low-calorie and sugar-free products, as it provides sweetness and bulk without the same blood sugar spike as sucrose. However, individuals with diabetes should still monitor their intake and consult with a healthcare provider, as maltitol can still affect blood glucose levels to some extent.
Is Maltitol Syrup Heat Stable and pH Stable?
Maltitol syrup exhibits excellent stability under a wide range of processing conditions, making it suitable for various food applications. It is heat stable up to 180°C, which means it can be used in baking, frying, and other high-temperature processing without significant degradation or loss of sweetness. This stability also contributes to its long shelf life in finished products.
In terms of pH stability, maltitol syrup performs well in the range of 3.0-8.0, which covers most food and beverage applications. It maintains its sweetness and functional properties in acidic products like fruit juices and carbonated drinks, as well as in neutral to alkaline products like baked goods and confections. Unlike some artificial sweeteners, maltitol does not undergo Maillard browning reactions to the same extent as sucrose, which can be an advantage in certain applications but may require adjustment in recipes where browning is desired.
What Foods and Products Commonly Contain Maltitol Syrup?
Maltitol syrup's unique combination of sweetness, bulk, and stability makes it a versatile ingredient in many food and beverage products. Some common applications include:
- Sugar-free confections: Hard candies, chewing gum, chocolates, and caramels, where it provides sweetness and texture without promoting tooth decay
- Baked goods: Low-sugar breads, cookies, cakes, and pastries, where it acts as a sweetener and humectant to retain moisture
- Beverages: Diet soft drinks, fruit juices, and sports drinks, where it provides sweetness with minimal calorie impact
- Oral care products: Toothpaste and mouthwash, where it helps prevent dental caries by not being fermented by oral bacteria
- Functional foods: Meal replacement shakes, protein bars, and weight management products, where it provides low-glycemic sweetness and bulk
- Frozen desserts: Sugar-free ice creams and sorbets, where it helps maintain texture and prevent ice crystal formation
Maltitol syrup is also used in some pharmaceutical products, such as syrups and chewable tablets, to improve taste and palatability.
How Does Maltitol Syrup Compare with Other Sweeteners or Alternatives?
When compared to other sweeteners, maltitol syrup offers several unique advantages and tradeoffs:
- vs. Sucrose: Maltitol syrup has 90% the sweetness of sucrose but with a lower glycemic index and caloric value. It provides similar bulk and texture, making it a good replacement in many recipes, but may require adjustment for browning and crystallization.
- vs. Sorbitol: Maltitol syrup is sweeter than sorbitol (90% vs. 60% of sucrose) and has a cleaner taste with less cooling effect. It also has better stability in high-temperature applications.
- vs. Stevia: While stevia is calorie-free and much sweeter than maltitol, it can have a bitter aftertaste and lacks the bulk needed for many applications. Maltitol syrup provides both sweetness and volume, making it a better choice for products that require texture and mouthfeel.
- vs. Erythritol: Erythritol has a lower caloric value (~0.2 kcal/g) and no glycemic impact, but it has a strong cooling effect and can cause digestive issues at high intake. Maltitol syrup has a more sugar-like taste and better texture properties.
- vs. Xylitol: Xylitol has similar sweetness to sucrose and better dental benefits, but it is more expensive and has a stronger cooling effect. Maltitol syrup is generally more cost-effective and easier to source in large quantities.
The choice between maltitol syrup and other sweeteners depends on the specific application, desired taste profile, caloric requirements, and cost considerations. In many cases, maltitol syrup is used in combination with other sweeteners to achieve optimal sweetness, texture, and stability through quantitative synergy (enhanced sweetness when used in combination).
Official References
- JECFA Evaluation: Maltitol (INS 965) - FAO/WHO Joint Expert Committee on Food Additives
- FDA GRAS Notice: Maltitol Syrup GRAS Notice No. GRN 000054
- EFSA Assessment: Scientific Opinion on Maltitol (E965) as a food additive
- Codex Alimentarius: Codex Standard for Food Additives (GSFA) (Search for INS 965(ii))
Disclaimer
This information is for educational purposes only and should not be considered medical advice. Always consult with a qualified healthcare provider or registered dietitian before making significant changes to your diet, especially if you have underlying health conditions or are taking medication. Food additive regulations may vary by country, so always check local labeling requirements and guidelines. The information provided is based on current scientific consensus, but new research may lead to updated recommendations in the future.