Stevia grade selection
Stevia Reb A vs Reb M: How Should Buyers Compare Samples?
Compare Reb A and Reb M steviol glycosides by identity, composition, production route and real-formula sensory testing before selecting a supplier sample.
Reb A and Reb M are different steviol glycosides, not interchangeable names for one stevia grade. A buyer should compare the named glycoside, total steviol glycoside content, production route and taste in the intended food or drink. “Reb M” on a listing is not enough to establish purity, supply method or better flavour in every formula.
This guide is for selecting trial samples. Product-specific percentages and market eligibility belong to the current supplier specification and destination-market review.
What do Reb A and Reb M names tell you?
Both belong to the steviol glycoside family, but their molecular structures differ. FDA notice records identify Reb A as one glycoside and describe Reb M as another. A specification may report total steviol glycosides, a named glycoside percentage or both; those figures answer different questions. Ask for the analysis method and the composition of the actual grade. Do not read a total steviol glycoside figure as a Reb A or Reb M percentage. The Reb A response cited here concerns Hunan Huacheng's notified preparation and intended uses. FDA said it had no questions at that time about the notifier's conclusion and had not made its own GRAS determination; this is not approval of Hengliyuan or every stevia product.
Why does the production route matter?
Some steviol glycoside preparations come from leaf extraction and purification; other notified preparations use enzymatic conversion. The linked PureCircle GRN 745 notice describes a Reb M-rich preparation made by enzymatically converting Reb A from stevia leaf extract. It is a notifier's submission, not an FDA response letter, and does not establish the route used by every product sold as Reb M or by the RM95 batch examples below. Request the production route, ingredient declaration, selected grade's specification and batch documents. Check the destination market's rules for the actual preparation and use, rather than transferring a conclusion from another route or country.
How should a beverage team compare taste?
Make two samples in the same beverage base, using the same process and target sweetness. Record sweetness onset, peak, linger, bitterness, flavour interaction and appearance. If the product will be served cold or contains acids, protein or fruit flavour, use those real conditions during the trial. A general claim that one glycoside always tastes better will not settle this decision. If a blend is considered, test it as a third material and record the other ingredients in it. Record the actual amount of each commercial material, its dose units and the final batch size. If a stock is used, state its material, concentration and amount, including dilution. Equal powder weights compare a fixed addition; matching sweetness requires documenting the adjusted dose. Keep sensory intensity, liking and physical measurements as separate observations.
What belongs in a quotation request?
Start with the intended food or drink, destination market and the taste or sugar target. Share the named grade, ingredient restrictions and quantities you know; an annual estimate, exact sample quantity and completed comparison sheet can follow. Ask Hengliyuan which material and production route can be offered for that request, then match the named-glycoside content, total content, method, batch COA and packing to that item. Keep the selected sample, offered specification and quotation linked by product code and agreed description. If the material, composition, route or grade changes, review the documents and trial relevance again. Do not assume an advertised percentage, MOQ or lead time applies to another grade; document gaps can be clarified before the next decision.
How do RA60SG95, RA98 and RM95 differ?
Read the named glycoside and total-glycoside rows separately. RA60SG95 is not a claim of only 60% total steviol glycosides. The table gives three supplier-issued Haigen batch examples, with percentages on a dried basis. Specification minima and measured batch results are different. These reports do not establish a complete profile of the remaining glycosides, current stock or a fixed specification for future deliveries.
| Grade and batch | Named glycoside: minimum / result | Total steviol glycosides: minimum / result |
|---|---|---|
| RA60SG95 · 20260912 | Reb A: 60.0% / 65.43% | 95.0% / 95.51% |
| RA98 · 20260923 | Reb A: 98.0% / 98.29% | 98.0% / 99.41% |
| RM95 · 20260920 | Reb M: 95.0% / 96.31% | 95.0% / 98.82% |
Compare these as different purchasing items, then test them at the intended sweetness in the same food or drink. Higher named-glycoside content does not by itself prove better taste, faster dissolution or lower finished-product cost. Ask for the offered grade's full composition, preparation instructions and matching COA before choosing the sample.
How should cost be compared across stevia grades?
Compare cost at the dose that reaches the agreed sensory target, not at an equal powder weight. For a price in currency per kilogram and a tested dose in grams per litre, sweetener cost per litre is price multiplied by dose and divided by 1,000. Add any other ingredients changed to achieve the same finished-drink target. Keep currency, freight basis, pack size, order quantity and quote validity comparable. This calculation does not establish a dose, a price advantage or a commercial offer.
Common questions
Is Reb M always the better choice than Reb A?
No. Select against the intended food or drink and the actual sensory target, with identity, documents and cost considered together. A grade name or higher named-glycoside content alone does not rank taste in every formula.
Request a stevia ingredient sampleDoes RA60SG95 mean only 60% total steviol glycosides?
No. In the supplier batch example here, the Reb A and total-glycoside specification rows have different minima and results. Read each analyte and dried-basis result separately; do not infer a complete remaining-glycoside composition from their difference.
Request a stevia ingredient sampleCan I compare RA98 and RM95 using the percentage alone?
No. Reb A and Reb M are different analytes. Compare the offered grade, reporting basis, composition and method, then measure the dose needed for the same intended sensory target. The batch graph explains assay records, not flavour or price ranking.
Request a stevia ingredient sampleDoes a Reb M name establish its production route or market eligibility?
No. Get the actual preparation and route documents for the offered grade and review its intended use in the destination market. A notice for another supplier or process does not establish eligibility for this material.
Request a stevia ingredient sampleDoes a compliant solubility entry prove performance in my cold drink?
No. That entry does not record your formulation concentration, preparation temperature, mixing, serving condition or storage observations. Check dissolution and any later changes in the complete intended base using a stated method.
Request a stevia ingredient sampleShould both materials be tested at equal powder weight?
That is a fixed-addition comparison. For a comparison at matched sweetness, record how the actual doses were adjusted, with the commercial material, batch size and any stock concentration and dilution stated. Judge bitterness and linger separately from liking.
Request a stevia ingredient sampleHow can I compare cost when the sample doses differ?
Use each material's tested dose at the agreed target, with consistent units, currency and quote basis. Include other ingredients changed for that target; the cost calculation above does not establish a universal dose or a commercial offer.
Request a stevia ingredient sampleCan I ask for a sample before I know the annual quantity?
Yes. Start with the product, intended market and the question you want the next sample to answer. Share what you know; the exact material, available documents, sample quantity, packing and quotation scope can be confirmed next.
Request a stevia ingredient sample