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Steviol glycosides - PowerPoint PPT Presentation

Amal A.A. Mohamed, Jan M.C. Geuns, Wim Van den Ende & Marc De Ley

Amal A.A. Mohamed, Jan M.C. Geuns, Wim Van den Ende & Marc De Ley

Molecular aspects of early steps in steviol biosynthesis. Amal A.A. Mohamed, Jan M.C. Geuns, Wim Van den Ende & Marc De Ley. Proceedings of the 3rd Stevia symposium, organised by EUSTAS. July 1st and 2nd 2009. History.

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Properties of Genotype and Environment on Diterpene Glycosides Content and Composition of the Sweet Herb, Stevia Rebaudi

Properties of Genotype and Environment on Diterpene Glycosides Content and Composition of the Sweet Herb, Stevia Rebaudi

Stevia rebaudiana Bertoni is a perennial shrub of the Asteraceae family, native to Paraguay. This plant is in high demand by the pharmaceutical, food and beverage industries as a source of steviol glycosides (SVglys) contained in the leaves. It is an alternative source of non-caloric and high potency natural sweeteners. S. rebaudiana produces steviol glycoside sweeteners in its leaves that are up to 240 times sweeter than sugar. The two main SVglys are stevioside and rebaudioside A. As an introduced species in Morocco, it is important to elucidate the genetic variability and relatedness among stevia accessions in order to broaden the genetic basis for future stevia breeding. Along with an evaluation of the chemical variability of S. rebaudiana genotypes (SVglys content and composition), this study investigates the effect of perennial cultivation on the difference these genotypes through an experiment conducted in six locations in Morocco. HPLC (high-performance liquid chromatography) analysis of the genotypes showed a high variability in SVgly content (from 11.4% to 19.1% DM). Moreover, the stevioside content varied between 6.49% (Berkane) to 9.56% (Agadir) and rebaudioside A content varied between 2.95% (Larache) to 5.74% (Berkane), The dendrogram separated the 55 genotypes into four main groups have been identified. The different variabilities observed among of S. rebaudiana genotypes are a promising indicator towards the development of new stevia varieties. This valuable information will be able to assist parental selection in future stevia breeding programs

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Steviol Glycosides and Biomass Variation of Stevia rebaudiana Crop Grown under Moroccan Conditions

Steviol Glycosides and Biomass Variation of Stevia rebaudiana Crop Grown under Moroccan Conditions

Stevia is a relatively unknown plant in Morocco. It contains low calorie sweeteners, which are 400 times sweeter than sucrose. The present study deals with the yield and quality response of cultivated stevia to the edaphoclimatic conditions in twelve different areas in Morocco, by measuring the biomass, Stevioside (STV), Rebaudioside A (RA), and Total steviol glycosides (SGtot). It was shown that stevia can grow in different types of soils even with low nutrient levels. Also stevia is suitable to be grown in areas with high electrical conductivity of soil (ECs) and water (ECw) like in Marrakech site with ECs=9.68 dS/cm, and Berkane site with ECw=2.97 and ECs=4.54. The organoleptic quality is increased with low pH as was recorded in Oulmes site where RA and SGtot were the greatest, with 9.88% and 18.94%, respectively. Stevia crop offers a great potential for introduction as a commercial crop for bio sweeteners production under Moroccan conditions.

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All you need to know about Stevia and its benefits

All you need to know about Stevia and its benefits

Stevia is a plant-based natural sweetener that can be used in various food and beverages to add sweetness. Though Stevia has sweetening properties, it does not add any calories. Stevia is growing quickly in South Asia and over 200 studies have illustrated that it is safe to use.

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379 views • 1 slides

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