A microbiome brief that only says “add the prebiotic sugar” is still not a sample request. Alpha-Glucan Oligosaccharide is a defined INCI: a short α-linked glucose oligosaccharide sold here as a white to off-white powder, purity 98% or higher, water-soluble, from enzymatic synthesis on vegetable substrates.
It is not beta-glucan, not a ferment lysate, and not automatic equivalence to every Bioecolia claim sheet. If the brief prints Bioecolia, clear the trade-name gate first: Bioecolia and Alpha-Glucan Oligosaccharide Spec. If the brief says only “glucan,” check whether you actually need beta-glucan.
What the INCI is locking
Secondary CosIng mirrors describe Alpha-Glucan Oligosaccharide as an oligosaccharide obtained by glucosyl-transferase work on sugar substrates, with a low degree of polymerization. SpecialChem records CAS 27707-45-5 and CosIng-style reference 74263 for that entry, and often cites a DP band around 4–6 glucose units. Other EU inventory mirrors list CosIng identifier 89777, functions such as cleansing, skin conditioning, and smoothing, and note that CosIng itself may print no CAS for the name. Process blurbs also disagree: some say maltose, some say sucrose with a Leuconostoc enzyme, and some quote DP 2–10.
For purchasing, treat those differences as a documentation check, not as three different raw materials. Write the INCI you will put on the label. Ask for a COA that shows the same INCI and the assay you will accept. Add CAS 27707-45-5 only when your regulatory pack requires a CAS line, and confirm the number on the batch documents—not from a single secondary page alone.
The grade on this site is a neat powder. Do not assume a diluted liquid trade grade shares the same weighing math.
What “for skin” and “prebiotic” are deciding
Searches for alpha-glucan oligosaccharide for skin, in skincare, skin benefits, and prebiotic are placement questions. Inventory wording for this INCI sits at skin conditioning (some mirrors also list cleansing and smoothing). The product specification positions the powder as a bioselective prebiotic carbohydrate for microbiome-oriented formulas: water-based serums, sensitive-skin care, baby care, intimate hygiene, and acne-positioned chassis where a prebiotic sugar is written into the brief.
That role is a formula-placement decision. It is not a finished-product claim that every lot will rebalance flora on every volunteer panel. Keep branded clinical percentages, pathogen-inhibition numbers, and metagenomic endpoints with the named commercial grade that published them. For a sample trial, lock the INCI and assay first; then ask what documentation the factory can attach to that lot.
How this powder goes into water
Suggested use on the product page is 0.5–3.0%. It is highly water-soluble and described as heat-stable, so it can enter the aqueous phase during processing rather than only on cool-down. The listed pH window is 3.0–9.0. Confirm the process temperature and final pH against the TDS of the drum you buy; suggested ranges are starting points, not a substitute for that sheet.
Handle it as a dry carbohydrate powder. Keep the drum closed against moisture so the lot does not cake before weighing. If a bench sample clumps after open storage, the usual first check is humidity pickup, not a wrong INCI.
What not to substitute silently
Three mix-ups show up on the same RFQ thread.
Bioecolia is a Solabia trade name whose published INCI is Alpha-glucan oligosaccharide. A factory powder sold as a Bioecolia alternative still needs INCI, assay, and form matched on the COA. That gate is Bioecolia and Alpha-Glucan Oligosaccharide Spec.
Beta-glucan is a different carbohydrate family. On this site the oat-grade page lists CAS 9041-22-9 and a higher-mass soothing / barrier story. Same repeating-unit shorthand (C6H10O5)n does not make the lots interchangeable. Split that decision in Alpha-Glucan Oligosaccharide vs Beta Glucan.
Fructooligosaccharides is another prebiotic carbohydrate. If the brief names FOS, do not silently substitute Alpha-Glucan Oligosaccharide. Different INCI, different sugar chemistry, different assay method.
Pairing with ferment lysates
The product page suggests pairing with ferment lysates such as Lactococcus Ferment Lysate or Bifida Ferment Lysate when the brief wants a prebiotic-plus-ferment story. Those remain separate purchase lines and separate COAs. One oligosaccharide powder does not replace a ferment lysate on the order, and a lysate does not replace this sugar.
Write both INCI names if the chassis needs both. Quote them as two SKUs so the warehouse does not collapse them into one “microbiome active” line.
What to send before the first sample ships
Put these lines in the message to the supplier:
- INCI Alpha-Glucan Oligosaccharide
- Appearance and assay target for the powder (≥98% if that is your brief)
- CAS 27707-45-5 when your documentation pack requires a CAS line
- Use window 0.5–3.0% and confirmation of water-phase, heat-stable addition for your process
- Bench-sample pack size, plus COA, SDS, and TDS with the shipment
Batch documents and a sample are available from the product page. Match the sample COA to the specification you wrote, then scale. A clear prebiotic INCI usually returns documents and a quote; a vague “microbiome sugar” line usually returns clarifying questions first.
