Stevia, botanically known as Stevia Rebaudiana Bertoni, belongs to the Asteraceae family and the Stevia genus. It is a perennial herbaceous plant with short days that is indigenous to South America, particularly Paraguay. More than 1,500 years ago, indigenous Guaraní people in South America extracted sweetness from Stevia leaves through tea-like infusions, referring to the plant as a "sweet herb" (ka’ahe’§). The artificial cultivation of Stevia for commercial purposes began in Paraguay with varieties like Svlaiquy and Casdri, resulting in a cultivation history of just over 40 years.
Natural Stevia Extract, sometimes referred to as stevia sweetener, is a unique natural sweetening substance that is refined and extracted from the leaves of the Stevia plant. It boasts high sweetness and low-calorie content, being 200 to 400 times sweeter than sucrose while only containing 1/300 of its caloric value.
The extracted sweetening compound from Stevia leaves can be used as a natural, zero-calorie, and sustained sweetness ingredient in the food and beverage industry. It is a novel kind of sweetener that has been used for centuries all across the world, unlike sucrose. Stevia sweetener is a popular option nowadays for people looking for calorie-free, natural sweeteners.
Similar to other botanical sources like sucrose and vanilla, Stevia leaf extracts are obtained by steeping and drying the plant leaves, followed by selecting and refining the best sweet-tasting extracts known as steviol glycosides.
Among these, Rebaudioside A (Reb A) is one of the most abundant and commercially utilized steviol glycosides found in Stevia leaves. It has gained global approval for application in food and beverage products, either individually or as blends, typically at a 1:3 ratio.
Stevia Sweetener Safety Assessment Worldwide
The safety of using Stevia sweetener has been confirmed via careful professional evaluation and research. Leading regulatory organizations throughout the world, including the European Food Safety Authority (EFSA), the Joint FAO/WHO Expert Committee on Food Additives (JECFA), the U.S. Food and Drug Administration (FDA), and the Australia New Zealand Food Standards Agency (FSANZ), have affirmed the safety of high-purity Natural Stevia Extracts.
Safety study protocols had already been created by international specialists, and they were well regarded. Toxicology and safety studies outcomes were used to set the Acceptable Daily Intake (ADI), the amount of a particular food ingredient that can be consumed daily throughout one's life without posing any health risks.
The ADI was established as a result of extensive research that involved feeding animals continuously increasing amounts of the chemical during their development and growth, which spanned the majority of their lifespan. After comprehensive evaluations of animal health, the highest dose not causing adverse effects is termed the No Observed Adverse Effect Level (NOAEL). A safety factor is applied to account for potential individual (intraspecies) and interspecies differences, ensuring the established ADI is safe for all consumers. Safety evaluations rely heavily on animal research, where large dosages are utilized to identify any potential negative effects and low doses to establish an acceptable daily intake level. Therefore, substantial toxicology studies on purified steviol glycosides are conducted in both animals and humans to establish a safe dosage with no side effects.
Calculating the projected consumption of the component across a variety of demographics, including various age groups and genders, is the next step. Estimating intake of the ingredients in foods and beverages is done through surveys of people's eating and drinking behaviors. These measurements are then used to ascertain the part's most extreme endorsed utilization levels in different dinners and refreshments, guaranteeing that shopper consumption stays inside the predefined ADI.
After a substance gets the last endorsement, administrative associations keep on observing new exploration and data on any possible unfavorable impacts to guarantee its continuous well-being.
In excess of 200 examinations support the well-being of stevia sugar
Natural Stevia Extracts are shown to be protected by in excess of 200 examinations, enveloping organic, toxicological, and clinical data. These investigations show that Stevia is right for use by each individual from the family, including youngsters and pregnant ladies. High-purity Stevia leaf extracts used in food and beverages have been shown to be non-allergenic.
However, crude Stevia extracts (referring to extracts obtained using water or ethanol as solvents) are not yet approved for use as food or beverage ingredients. Studies using raw Stevia extract on animal subjects have noted negative outcomes. These studies' contradictory findings, nevertheless, may be the result of inadequate data, limitations in the study design, and relationships. Some scientific bodies have questioned the veracity of this research. Furthermore, these adverse effects have not been observed in purified Stevia leaf extracts allowed for use in food and beverages.
Purified steviol glycosides have been studied in human research to determine how they affect people with and without diabetes' pharmacokinetics, safety, and tolerance. These studies have shown that steviol glycosides are safe for people with diabetes, and it has been shown that the required dosage of pure steviol glycosides has no effect on blood pressure.
Stevia and a Healthy Diet
Global rates of overweight and obesity are on the rise, prompting medical professionals to encourage reduced calorie intake for better weight management.
Stevia can aid in weight control while allowing consumers to enjoy the sweetness of foods. The limited absorption capacity of our bodies for steviol glycosides is key to this effect—steviol glycosides are not absorbed by the stomach or small intestine. Research also indicates that Stevia is not stored within the body.
According to the World Health Organization's estimates, the number of individuals with diabetes worldwide surpassed 734.6 million in 2012, and this number is projected to double by 2030.
Due to its natural zero-calorie nature and lack of impact on blood sugar levels, Stevia can replace sugary snacks and carbohydrate intake in the daily diets of both adults and children with diabetes.
Natural Stevia Extracts are sometimes used, along with other natural sweeteners such as sucrose, in carbohydrate-containing foods and beverages. It's important to check the ingredient list. The safety of human consumption of Stevia extracts has been acknowledged by global regulatory bodies, including JECFA, EFSA, FDA, and FSANZ. Extensive research findings confirm the safety of Stevia leaf extracts and the absence of significant adverse effects. Furthermore, Stevia leaf extracts do not affect blood sugar levels in individuals with diabetes.
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