Sugar-Free Gummy OEM: Polyol Blending, Graining Control and Texture Stability in Production
Sugar-free gummies are among the fastest-growing enquiry categories and among the most likely to fail at sampling. The assumption is usually that sugar-free means swapping sucrose for a polyol and leaving everything else alone. What comes back is a sample that has grained hard, collapsed into something sticky, or started weeping in the pack. The reason is straightforward: sucrose in a gummy is not only a sweetener. It is simultaneously a bulking agent, a water activity regulator and the main contributor to texture. Remove it and those functions need new owners, or the whole system loses its balance.
1. Choosing polyols: separate the builder from the filler
Three polyols dominate, and they play different roles. Maltitol syrup has a relatively high molecular weight, good viscosity and moderate hygroscopicity, which makes it the closest functional replacement for sucrose as a structural builder - it holds volume and chew, and usually forms the bulk of a sugar-free system. Sorbitol syrup is an effective humectant and costs less, but at high inclusion it brings tolerance concerns and pushes the product soft and tacky. Erythritol is clean-tasting, almost non-caloric and barely hygroscopic, but it crystallises readily: push the level and crystals appear during storage, producing a sandy mouthfeel. In practice, maltitol syrup carries the system and erythritol adjusts sweetness and cooling effect, generally held within twenty to thirty per cent of total polyol. Above that band, graining risk climbs sharply.
2. Graining: the defining failure mode
Graining is simply a polyol moving from a supersaturated amorphous state into a crystalline one. Three things trigger it: excessive supersaturation, meaning solids too high or moisture too low; seed crystals, introduced by raw material microcrystals or local cooling at depositing; and temperature cycling during storage and transport, which gives molecules the chance to rearrange. Four countermeasures work together. Hold cooking-end solids slightly below the sugared equivalent to leave headroom. Add a small proportion of high-DE maltodextrin or soluble fibre to raise viscosity and slow molecular migration. Control both the level and the particle size of erythritol, since finer crystals dissolve fast and reappear fast. And keep the cooling curve after depositing steady rather than shock-cooling the mould. Applied together rather than individually, these bring graining incidence down meaningfully.
3. Rebuilding texture: the gelling system has to change too
Once sugar is gone, both solids and viscosity shift, and so do the conditions under which the gel network forms. In gelatine systems polyols interfere relatively little with hydration, but the finished piece is firmer and less chewy, which usually means adjusting gelatine level rather than relying on Bloom grade alone. Pectin systems are acutely sensitive to soluble solids and pH: the drop in sugar content directly affects gel formation, so gel strength has to be rebuilt through precise pH control combined with calcium level for low-methoxyl pectin, or the sugar-acid balance for high-methoxyl pectin. Starch systems need gelatinisation and retrogradation rates reassessed from scratch. Whichever system is used, a sugar-free formulation requires its own gel strength curve rather than borrowing the inclusion rate from the sugared recipe.
4. Cooking and depositing: a narrower window
Polyol systems behave differently under heat. The boiling characteristics of maltitol syrup generally require a slightly lower cooking temperature than a sugared formulation, because higher temperatures drive colour development and flavour degradation. Erythritol needs thorough agitation at temperature; any undissolved particle becomes a seed crystal. On depositing, polyol masses are typically more viscous and flow less readily, so depositor head temperature and mould plate holding temperature need to come up accordingly or the result is tailing, air entrapment and unstable weight. Demoulding is the frequently forgotten step: sugar-free masses interact differently with starch moulds, so demoulding oil and starch moisture have to be re-matched, or the surface turns tacky and the reject rate from torn skins rises.
5. Water activity and shelf life: sugar-free is not automatically more stable
A persistent misconception is that sugar-free keeps better. In reality polyols retain moisture differently from sucrose, finished water activity often runs higher, and microbiological risk does not necessarily fall. At the same time, the hygroscopic character of some polyols can leave the surface tacky under high humidity. Sugar-free gummies therefore need their own target moisture and water activity window, validated through accelerated study. Shelf-life work should watch three indicators in parallel: texture, meaning hardness and elasticity over time; appearance, meaning graining, syneresis and surface tackiness; and microbiology. Graining in particular tends to show up two or three months in, so a one-month accelerated sample will not tell you what you need to know.
6. Labelling: what sugar-free actually permits
Under current rules, "sugar-free" is a defined claim with a quantified limit, generally no more than 0.5 grams of mono- and disaccharides per 100 grams, and "reduced sugar" carries its own threshold. Two further points apply when polyols are used. They still contribute energy, and that has to be declared honestly in the nutrition panel. And several polyols, including sorbitol and maltitol, can cause gastrointestinal discomfort when consumed in excess, which warrants an advisory statement. Where the product targets children or is positioned as a meal replacement, check the specific category standard on sweetener and polyol use as well. These boundaries are best settled before the formulation is frozen, rather than after the packaging has been printed.
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About Guangzhou Mesen Health Biotechnology Co., Ltd
Guangzhou Mesen Health Biotechnology Co., Ltd is located in the Huashan Science and Technology Park, Huadu District, Guangzhou. The company has focused on OEM and ODM services for the big health industry for nearly 20 years, operating dedicated research, production, sales and management centres, and maintaining long-term strategic partnerships with well-known Chinese medicine colleges and research institutions. Capabilities span pressed candy, gummies, capsules, solid beverages, herbal teas, plant beverages, protein powders, dietary supplements and enzyme jelly - from formulation development through contract manufacturing. For details on minimum order quantities, sampling lead times and quotations, see our manufacturing advantages and product range, or contact us for a tailored proposal.
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