Rebaudioside M (Reb M) 95% — Bulk Manufacturer & Supplier
Xinghua GL Stevia Co., Ltd. (brand GL Stevia) produces Rebaudioside M and Rebaudioside D from stevia leaves in Xinghua, Jiangsu, China, with an annual capacity of 2,300 tonnes. Optimvia® RM95 is Reb M at 95% or above, CAS 1220616-44-3 — the steviol glycoside closest to sucrose in taste.
It is our answer to the one limitation of conventional stevia: at high dose, Reb A turns bitter. Reb M keeps a clean, sugar-like profile well above 300 ppm, so formulators can raise the sweetness instead of adding masking agents.
3–7 days
lead time, stock grades
Optimvia® grades — Reb M 95% and Reb D 95%
Both grades are white crystalline powder, tested per lot to GB1886.355-2022 as well as JECFA and EU specifications. Sweetness is measured against a 5% sucrose solution (%SE).
| Grade | Main glycoside | Total steviol glycosides | Sweetness (5% SE) | Typical application |
|---|
| Optimvia® RM95 | Reb M ≥95.0% | ≥95.0% | 300× | Clean-label beverages, dairy alternatives, tabletop, premium bakery |
| Optimvia® RD95 | Reb D ≥95.0% | ≥95.0% | 210× | Beverages where a rounder mouthfeel is wanted; often blended with RM95 |
| Melis300™ (ESG) | GSG ≥85% | ≥95.0% | 150–160× | Cost-driven sugar reduction with improved solubility; enzyme route |
RM95 and RD95 are also available as a co-blended grade to your ratio, from 5 kg per trial batch.
Why Reb M tastes closer to sugar
Steviol glycosides differ by the number and position of the glucose units attached to the steviol backbone. Reb M carries six — more than any other commercial glycoside — and that structure is what removes the liquorice note and the lingering bitterness that characterise stevioside and, at high dose, Reb A.
Clean at high dose
Bitterness stays imperceptible above 300 ppm, where Reb A already needs masking.
Full front-to-back taste
Ideal initial sweetness, full middle, and the shortest aftertaste of the family.
Fewer masking agents
Typically removes part of the taste-modifier cost from the formula.
Zero calorie, zero GI
A natural, plant-based high-intensity sweetener with no glycaemic load.
Where the Reb M comes from
Reb M and Reb D occur only in traces in ordinary stevia leaves — about 0.1% and 0.2% of the total glycosides, against roughly 8% for Reb A. Our supply rests on GL#10 (Gelin No. 10), a cultivar we bred and plant at scale in high-latitude fields with more than 2,000 accumulated temperature hours, where the leaf builds a far higher share of the glycosides we convert into Reb M. That is what makes a continuous, traceable supply possible instead of a spot market.
Production route — leaf-derived, enzymatically converted, never fermented
This is the first question most purchasing teams ask, because the route decides the clean-label claim you can carry. Route 1 — leaf extraction, EU E 960a. Stevia leaves → water / food-grade ethanol extraction → resin purification → crystallisation. This is how the GLSTEVIA® RA series is made: RA98, RA97, RA95 and the SG95-RA60 blend. The leaf supply is traceable down to our own fields and contract planting.
Route 2 — enzymatic conversion, EU E 960c. Reb M and Reb D sit at only about 0.1% and 0.2% of the glycosides in the leaf, so a 95% grade cannot come from extraction alone: leaf-derived steviol glycosides are converted with a food-grade enzyme preparation and then purified. Optimvia® RM95 and RD95 are made this way, and the GSG range — Melis300™ and GLF03® GSG75 — uses the same enzymatic platform, with CGTase attaching additional glucose units for higher solubility.
We operate no fermentation route (E 960b) at all. If your specification fixes one of the two routes, say so at enquiry stage — we confirm in writing which route your grade comes from, before the order is placed.
Reb M or Reb A — how to choose
Most projects are a mix: Reb A carries the bulk of the sweetness at the lower cost per unit, Reb M removes the linger and protects the claim. Both are quoted from the same plant, so the blend can be shipped as one lot.
| Reb M 95% (Optimvia® RM95) | Reb A 97% |
|---|
| Sweetness at 5% SE | 300× | 280× |
| Bitterness threshold | Hardly noticeable even above 300 ppm | Noticeable from about 200 ppm |
| Taste | Closest to sucrose, no linger | Clean, slight linger at high dose |
| Relative cost | Higher | Lower |
| Typical use | Clean-label formulas, premium beverages, low-dose systems | Mainstream sugar reduction in beverages, dairy, bakery |
See the Reb A series page →
Ordering information
| Item | Terms |
|---|
| MOQ | 20 kg per grade. Mixed pallets combining several grades are accepted. |
| Free sample | 50 g per grade, dispatched within 3 working days. |
| Lead time | 3–7 days for standard grades held in stock. Custom blends and non-standard assays are confirmed at order. |
| Payment | T/T 30% deposit, 70% against copy of B/L; or irrevocable L/C at sight. |
| Packing | 20 kg net, food-grade PE inner bag in a fibre drum. 10 kg and 25 kg on request. |
| Shelf life | 24 months in the unopened original packing, stored below 25 °C in a dry place. |
| Port of loading | Shanghai, China. |
| Documentation | Batch COA, specification sheet, SDS, allergen / GMO / TSE-BSE statements, heavy metal and microbiological reports, Halal and Kosher certificates, country of origin, shelf-life statement. |
Prices are quoted FOB Shanghai or CIF to your port, valid 30 days. Freight for samples is confirmed case by case depending on destination.
Certifications and regulatory status
ISO 9001
ISO 14001
GMP
Halal
Kosher
FDA GRAS No. 702
USDA Organic (NOP)
Our quality system is built on JECFA, EFSA, FSANZ and GB1886.355-2022. Reb M and Reb D are approved as steviol glycosides in the United States (GRAS) and in the European Union (E 960a for the extracted grades, E 960c for the enzymatically produced grades). See the full certificate list →
Frequently asked questions
The questions below are specific to this grade. The stevia FAQ answers 36 more — sweetness equivalence, bitterness and masking, both production routes, organic certification, MOQ, lead time and payment terms.
What is Rebaudioside M (Reb M)?
Reb M is a steviol glycoside found in the stevia leaf, carrying six glucose units on the steviol backbone. It is the commercial glycoside with the taste closest to sucrose: no liquorice note and no lingering bitterness, even above 300 ppm. Our Optimvia RM95 is Reb M at 95% or above, CAS 1220616-44-3.
Is your Reb M leaf-extracted, bioconverted or fermented?
Enzymatically converted from leaf-derived steviol glycosides, and never fermented. Reb M is only about 0.1% of the glycosides in the leaf, so a 95% grade is made by converting leaf steviol glycosides with a food-grade enzyme preparation and then purifying - the EU category E 960c. Optimvia RM95 and RD95 are made this way, from our own GL#10 leaf and traceable to harvest lot. We run no fermentation route (E 960b).
Why is Reb M more expensive than Reb A?
Because it is scarce in the plant. Reb M is about 0.1% of the glycosides in an ordinary stevia leaf against roughly 8% for Reb A, so it takes oriented breeding and much more leaf per kilogram. Our GL#10 cultivar is what keeps the price workable; part of the formula can stay on Reb A to control cost.
Can I blend Reb M with Reb A?
Yes, and most customers do. Reb A carries the bulk of the sweetness at a lower cost per unit, Reb M removes the linger and protects the clean-label claim. We produce the blend to your ratio from 5 kg per trial batch and ship it as a single lot with one COA.
What is the MOQ and can I get a sample?
MOQ is 20 kg per grade, and mixed pallets combining several grades are accepted. A 50 g sample per grade is free of charge and is dispatched within 3 working days.
What is your lead time?
3 to 7 days for standard grades held in stock, counted from order confirmation. Custom blends and non-standard assays are quoted with their own lead time at order confirmation.
Which documents come with a shipment?
Batch-specific COA, specification sheet, SDS, allergen, GMO and TSE-BSE statements, heavy metal and microbiological reports, Halal and Kosher certificates, country of origin and shelf-life statement. Third-party test reports are available on request.
Is Reb M approved in the EU and the US?
Yes. In the European Union, leaf-extracted steviol glycosides are authorised as E 960a and enzymatically produced grades as E 960c; in the United States they are GRAS, and our plant holds FDA GRAS No. 702. Our quality system follows JECFA, EFSA, FSANZ and GB1886.355-2022, and each lot is released against the specification of the destination market.
Reb-M technical catalogue (PDF)
Specifications, sweetness curves and application data.
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