Introduction： Rebaudioside M (CAS: 1220616-44-3) is a natural, non-caloric sweetener belonging to the steviol glycoside family. It is one of the minor steviol glycosides isolated from the leaves of Stevia rebaudiana (Bertoni) Hemsl., a plant native to South America that has been used for centuries as a natural sweetener. Also known as Reb M or Rebaudioside X, this compound has gained significant attention in the food and beverage industry as a next-generation sweetener that addresses the sensory limitations of earlier steviol glycosides. Source and Biosynthesis: Rebaudioside M is naturally found in very low concentrations in the leaves of Stevia rebaudiana. It is structurally related to rebaudioside A, with the key distinction that the hydroxy groups at positions 2 and 3 of the β-D-glucosyl ester moiety have both been converted to the corresponding β-D-glucoside. This additional glycosylation contributes to its superior sensory profile. Rebaudioside M is a glycoside of the ent-kaurene diterpenoid aglycone.
Sweetness Profile and Mechanism of Action: Rebaudioside M functions as an agonist of the class 1 sweet taste receptor (TAS1R), specifically the heterodimer formed by TAS1R2 and TAS1R3. This receptor is responsible for the perception of sweetness in humans. The sweetness potency of Rebaudioside M is remarkable: --200+ times sweeter than sucrose --Some sources report over 350 times sweeter than sucrose Unlike some other steviol glycosides, Rebaudioside M is characterized by a clean, sugar-like sweetness with no significant lingering aftertaste. This makes it particularly valuable for applications where taste purity is essential.
Applications and Advantages: Food and Beverage Industry Rebaudioside M is primarily used as a natural, zero-calorie sweetener in food and beverage products. Its key advantages include: --Zero calories: Provides sweetness without contributing to caloric intake --High sweetness intensity: Up to 300 times sweeter than sucrose --Clean taste profile: Minimal to no bitter or licorice-like aftertaste --Diabetic-friendly: Suitable for individuals with diabetes and those managing obesity Research Applications In the research setting, Rebaudioside M (purity ≥95–98%) is widely used for: --Content determination and identification --Pharmacological experiments --Bioactivity screening --Analytical method development and validation --Quality control applications
Conclusion: Rebaudioside M (CAS: 1220616-44-3) represents a significant advancement in the field of natural sweeteners. As a minor steviol glycoside from Stevia rebaudiana, it offers an exceptional combination of high sweetness intensity, zero caloric content, and a clean taste profile that closely mimics sucrose. Its role as a TAS1R2/TAS1R3 agonist underpins its sweetening mechanism, while its complex glycosylated structure—featuring multiple glucose units attached to the ent-kaurene diterpenoid backbone—distinguishes it from other members of the steviol glycoside family. Rebaudioside M is well-positioned to play an increasingly important role in the food, beverage, and pharmaceutical industries. Its availability as a high-purity reference standard also makes it a valuable tool for analytical and research applications. PRODUCT Manager: Joy Wu CONTACT/Email address: Joy@coreychem.com
