Table of Contents
IMO900 vs IMO90: A Buyer’s Guide to Prebiotic Specs & Formulation
IMO-900 and IMO-90 are the two grades most often quoted in the isomalto-oligosaccharide market, and the naming invites confusion. The numbers refer to different things, and the two materials differ in purity, saccharide profile and behaviour in a formula. A buyer who assumes the higher number is the higher grade will end up specifying the wrong material. This guide separates the two clearly.
What Do IMO-900 and IMO-90 Mean?
Both grades are produced by enzymatic conversion of starch – typically tapioca, corn or a certified organic source. The difference is in the downstream processing and the resulting composition.
- IMO-900: a higher-purity grade with IMO content typically at or above 90% of total carbohydrate
- IMO-90: a standard grade with IMO content typically around 85-90%, carrying more mono- and disaccharide
- Both: mild sweetness, high solubility, clear solutions in beverage applications
The practical difference is the residual glucose, maltose and higher-sugar fraction. That fraction affects sweetness, browning, and how the powder behaves in a low-pH beverage over shelf life.
Key Specifications
Specify on saccharide profile rather than a single purity claim. Request the full distribution.
- IMO content (isomalto-oligosaccharide): minimum 85-90% depending on grade
- Glucose + maltose + isomaltose: balance of carbohydrate
- Moisture: max 6.0% for powder grades
- pH (10% solution): 4.0-6.0
- Sulphated ash: max 0.5%
- Organic certification: USDA Organic or EU Organic with transaction certificate
Ask for the saccharide profile on the certificate of analysis, not just the IMO percentage. Two materials both claiming “90% IMO” can differ in which oligosaccharides dominate, and that changes both function and label claim.
Functional Benefits
Both grades are highly soluble and give clear solutions, which makes them suitable for transparent beverages where inulin would cloud. They are mildly sweet at roughly half the intensity of sucrose, so they carry body without dominating the flavour profile. They are also stable across the pH range of most soft drinks and dairy.
IMO-900’s lower residual sugar means less browning in baked applications and a cleaner sweetness curve in beverages. IMO-90 delivers the same functional profile at a lower cost where maximum purity is not required.
Applications in Food, Beverage & Supplements
Transparent beverages are the primary application – functional waters, clear protein drinks and fortified teas. The high solubility and neutral colour make IMO the prebiotic fibre of choice where inulin’s opacity rules it out.
In bakery, IMO-900 browns less than IMO-90 at the same bake, which matters in pale crumb and delicate cake systems. In supplements, it functions as a soluble fibre source in powders, gummies and sachets. In dairy, it adds body to yoghurt and fermented drinks without thickening.
How to Formulate / Use
Match the grade to the claim. If the product carries a fibre content claim calculated from IMO, the higher-purity grade delivers more fibre per gram and lets you hit the claim at a lower inclusion rate. If the product simply needs soluble fibre and mild sweetness, IMO-90 is the economical choice.
Dose on IMO content, not on powder weight. A formula needing 5 g of IMO requires roughly 5.6 g of an 89% grade and roughly 5.9 g of an 85% grade. In heated applications, use IMO-900 where colour control matters; the reduced glucose fraction means less Maillard browning at the same process conditions.
Sourcing & B2B
Qualify suppliers on the saccharide profile across lots, not the headline purity number. Request the glucose, maltose, isomaltose and IMO distribution for at least five recent lots and check that the IMO fraction holds within two points. For transparent beverage applications, also request a clarity and colour commitment after accelerated storage.
Organic IMO depends on certified organic source starch – typically organic tapioca or corn. Confirm the source, the organic certificate, and the transaction certificate for the lot. Lead times of 4-8 weeks are normal for non-stock grades; plan safety stock accordingly.
Frequently Asked Questions
Q: Is IMO-900 better than IMO-90?
A: It is purer, which matters for fibre claims and colour control. For general use IMO-90 is functionally equivalent and cheaper.
Q: Does IMO cloud a beverage?
A: No. IMO is highly soluble and gives clear solutions even at high inclusion rates, unlike inulin.
Q: Is IMO stable in acidic drinks?
A: Yes, across the pH range of most soft drinks and fermented dairy. Request accelerated-storage data for high-acid, long-shelf-life products.
Q: How sweet is IMO compared with sucrose?
A: Roughly 40-50% of sucrose sweetness, with a clean profile and no lingering aftertaste.
Related Posts
