What Are Stevia Extracts RA97/98-Stevioside? Functions and Uses Explained

The growing global awareness of health and wellness has led to a dramatic shift in consumer preferences toward natural, low-calorie alternatives to sugar. Excessive sugar consumption has been linked to obesity, diabetes, and other metabolic disorders, prompting food and beverage manufacturers to seek healthier sweetening options. Among natural sweeteners, stevia has emerged as one of the most popular choices due to its zero-calorie profile, plant-based origin, and safety profile.

Stevia Extracts RA97/98-Stevioside represent a high-purity form of stevia extract standardized to contain 97–98% stevioside. These extracts provide intense sweetness, excellent stability, and minimal aftertaste, making them ideal for a wide range of applications in beverages, foods, and dietary supplements. Compared with standard stevia extracts, which may contain lower percentages of stevioside or a mixture of glycosides, RA97/98 offers a more predictable sweetness profile and consistent performance in formulations.

The purpose of this article is to provide a comprehensive overview of Stevia Extracts RA97/98-Stevioside, covering their composition, chemical characteristics, functional properties, applications, and best practices for quality control and sourcing. By understanding these aspects, manufacturers, formulators, and consumers can make informed decisions about integrating high-purity stevia extracts into their products.

What Is Stevioside?
Stevioside is a naturally occurring glycoside found in the leaves of Stevia rebaudiana, a plant native to South America. Chemically, stevioside consists of a diterpene core (steviol) glycosylated with three glucose molecules. This structure is responsible for its intense sweetness, which is approximately 200–300 times sweeter than sucrose, allowing very small amounts to achieve the desired sweetness in foods and beverages.

In addition to its high sweetness potency, stevioside is heat-stable and retains its structure under a wide range of pH conditions, making it suitable for use in various formulations, from beverages to baked goods.

Purity and Standardization in RA97/98
Stevia Extracts RA97/98-Stevioside are characterized by a high concentration of stevioside, typically ranging from 97% to 98%. This high level of standardization offers several benefits:

• Predictable sweetness: Consistent potency allows formulators to use accurate dosing without guesswork.
• Reduced aftertaste: Higher purity reduces the presence of other glycosides that may contribute to bitterness.
• Improved stability: High-purity extracts are less prone to degradation and maintain performance over time.

Lower-purity stevia extracts, often labeled as RA50 or RA60, may contain only 50–60% stevioside and a mixture of other glycosides, which can result in variable sweetness and taste profiles. RA97/98 is particularly suitable for applications where taste precision and high performance are critical.

Additional Components and Taste Profile
While RA97/98 extracts are primarily composed of stevioside, minor quantities of other glycosides, such as rebaudioside A, may be present. These minor compounds contribute subtly to the flavor profile and can help balance sweetness and aftertaste.

The taste profile of RA97/98-Stevioside is generally smoother than lower-purity extracts. Its clean, intense sweetness makes it a preferred choice in beverages, dairy products, and functional foods where bitterness or off-notes are undesirable.

Non-Caloric Sweetener for Sugar Reduction
One of the primary advantages of Stevia Extracts RA97/98-Stevioside is their zero-calorie profile, making them ideal for sugar reduction in various products. Unlike sucrose, which provides 4 kcal per gram, RA97/98 contributes virtually no calories while delivering equivalent sweetness. This feature is particularly valuable in:

• Weight management products
• Sugar-free beverages and desserts
• Low-calorie snacks

Additionally, stevioside does not raise blood glucose levels, making it a suitable sweetener for diabetics and individuals managing glycemic responses.

Stability and Formulation Advantages
RA97/98-Stevioside offers exceptional stability, which enhances its versatility across different food and beverage applications:

• Heat stability: Suitable for baking and cooking processes without significant loss of sweetness.
• pH stability: Maintains sweetness across acidic and neutral pH ranges, ideal for carbonated drinks, fruit juices, and flavored waters.
• Shelf-life stability: Resistant to degradation during storage, ensuring consistent performance in long-life products.

These properties allow formulators to create products with predictable taste profiles while maintaining product safety and quality.

Additional Functional Benefits
Emerging research suggests that stevioside may have additional health benefits beyond sweetness:

• Antioxidant activity: Some studies indicate stevioside can help reduce oxidative stress.
• Oral health support: Unlike sugar, stevioside does not contribute to tooth decay.
• Metabolic benefits: May support healthy blood glucose management as part of a balanced diet.

While the primary function remains as a natural sweetener, these secondary benefits make RA97/98 extracts appealing for functional foods, nutraceuticals, and wellness-oriented product lines.

Sweetening in Beverages and Soft Drinks
The beverage industry is one of the largest users of Stevia Extracts RA97/98-Stevioside due to its clean sweetness and versatility. It is commonly incorporated into:

• Carbonated soft drinks
• Iced teas and flavored waters
• Juices and sports drinks

High-purity RA97/98 allows formulators to mask bitter notes from fruit acids or other functional ingredients, resulting in a smoother taste experience for consumers.

Baking and Confectionery Products
RA97/98 is well-suited for baking applications due to its heat stability. Manufacturers can incorporate it into:

• Cakes, cookies, and pastries
• Sugar-free chocolate and candies
• Frostings and fillings

Because it is approximately 200–300 times sweeter than sucrose, only small amounts are required, which helps maintain texture and moisture in baked goods.

Dietary Supplements and Health Products
In the nutraceutical sector, RA97/98-Stevioside is used to:

• Sweeten protein powders and meal replacement shakes
• Reduce sugar in powdered supplements and capsules
• Improve taste in herbal or functional blends without adding calories

Its non-glycemic properties make it suitable for diabetic-friendly or low-calorie health formulations, enhancing both palatability and consumer acceptance.

Industrial and Commercial Use Considerations
For large-scale applications, RA97/98 offers cost-effectiveness through higher sweetness intensity per gram compared with lower-purity extracts. Regulatory compliance is also critical:

FDA, EFSA, and other authorities recognize stevia as Generally Recognized as Safe (GRAS) when used within recommended limits.

Labels must clearly indicate use of stevia extract in products, complying with local regulatory requirements.

Bulk sourcing from reliable suppliers ensures consistent quality and active compound verification.

Analytical Verification
Ensuring the quality of Stevia Extracts RA97/98-Stevioside requires rigorous analytical verification:

• HPLC testing: Confirms the stevioside content and purity
• LC-MS or UV analysis: Detects impurities or potential adulteration
• Sensory testing: Ensures taste and sweetness meet formulation standards

Regular analytical testing is critical for maintaining product quality, particularly when scaling production for commercial applications.

Supplier Evaluation and Certification
Selecting reliable suppliers is essential to maintain consistency and safety:

• Organic, non-GMO, or sustainable certifications indicate high-quality sourcing
• Certificates of Analysis (COA) provide detailed information about stevioside content, moisture, and other quality parameters
• Traceability from cultivation to finished extract ensures reproducibility and compliance

Suppliers experienced in RA97/98-Stevioside production are more likely to provide consistent high-purity extracts suitable for sensitive food and beverage formulations.

Handling and Storage Guidelines
Proper handling and storage of RA97/98-Stevioside are crucial to preserving its stability:

• Store in cool, dry, and light-protected environments
• Avoid exposure to moisture to prevent caking or degradation
• Use airtight, food-grade containers to maintain purity during transport and storage

Following these guidelines ensures the extract maintains its functional properties throughout the supply chain and during product shelf-life.

Stevia Extracts RA97/98-Stevioside are high-purity, natural sweeteners standardized to 97–98% stevioside. They provide intense sweetness, minimal aftertaste, and exceptional stability across a wide range of applications, from beverages and baked goods to dietary supplements and functional foods.

Their zero-calorie and non-glycemic properties make them particularly suitable for sugar reduction, diabetic-friendly products, and low-calorie formulations. The high level of standardization ensures predictable sweetness, improved taste quality, and reliable performance in commercial and industrial applications.

Proper sourcing, quality control, and analytical verification are critical to maintaining the purity and efficacy of RA97/98 extracts. By understanding their chemical characteristics, functional properties, and application potential, formulators and manufacturers can fully leverage Stevia Extracts RA97/98-Stevioside to meet consumer demand for natural, health-conscious sweeteners.