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Isomalt (CAS 64519‑82‑0) is a sugar‑alcohol polyol derived from sucrose via enzymatic conversion and hydrogenation. It consists of two stereoisomers: isomaltitol and glucitol‑mannitol. It possesses about 45 % of sucrose’s sweetness, low glycaemic index and non‑cariogenic properties. Highly stable against heat, acid and humidity, it resists Maillard browning. Widely used in sugar‑free hard candies, chocolates and confectionery. It may trigger mild laxative effects at high intake, and is commercially produced as bulk food‑grade crystalline polyol for low‑sugar food manufacturing.
Isomalt (CAS 64519‑82‑0) is a polyol sugar alcohol manufactured from sucrose through enzymatic rearrangement followed by hydrogenation. It is globally approved as a food additive by JECFA, EFSA and many national regulatory bodies. With roughly 45 % of sucrose sweetness, low glycemic response and non‑cariogenic features, it is a mainstream ingredient for sugar‑free and low‑sugar food production. It exhibits outstanding thermal and pH stability, minimal Maillard browning and low hygroscopicity compared with most other polyols.
Its largest application lies in sugar‑free confectionery. Thanks to low moisture absorption, isomalt is the preferred raw material for sugar‑free hard candies, lollipops and boiled sweets. It produces clear, glass‑like candy texture without stickiness under normal storage conditions. It is also widely used in sugar‑free toffees, lozenges and breath‑freshening candies for oral‑care‑oriented products, as oral bacteria cannot ferment it into cavity‑causing acids. For chocolate‑coated confectionery, it reduces sugar‑bloom risk and stabilises product shelf‑life.
Isomalt is applied in baked goods, chewing gum and table‑top sweetener blends. In sugar‑free chewing gum, it delivers bulk texture and moderate sweetness. In low‑sugar pastries and biscuits, it replaces part or all sucrose to lower glycaemic load; its low browning tendency keeps pale crust colour when required. It can be mixed with other polyols or high‑intensity sweeteners to adjust sweetness profile and cut material cost. It is also used in icing and decorative sugar work for confectionery art for its excellent moulding performance.
Despite its benefits, isomalt has usage limitations. Human small intestine absorbs it incompletely. Excessive consumption may lead to laxative effects such as bloating, flatulence or diarrhoea, so regional authorities set advisory maximum intake levels. It is seldom used in beverages, because high dosage would trigger gastrointestinal discomfort and its solubility is inferior to sorbitol or xylitol.
In summary, isomalt is a versatile bulk polyol for sugar‑free food. Its core commercial applications cover hard‑boiled sugar‑free candies, lozenges, chewing gum and low‑sugar bakery decorations, leveraging its low hygroscopicity, heat stability and non‑cariogenic property. Formulators must control addition dosage to avoid digestive side‑effects and comply with local food additive regulations. It rarely acts as main sweetener for liquid food systems due to solubility and tolerance constraints.
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