Results 41 to 50 of about 1,451 (153)

Comparative Assessment of the Basic Chemical Composition and Antioxidant Activity of Stevia rebaudiana Bertoni Dried Leaves, Grown in Poland, Paraguay and Brazil—Preliminary Results

open access: yesApplied Sciences, 2021
This study compares the content of basic nutrients (proteins, fats, digestible carbohydrates, dietary fiber and ash), steviol glycosides, selected antioxidants (vitamin C, total polyphenols) and antioxidant activity in dried leaves of Stevia rebaudiana ...
Teresa Leszczyńska   +3 more
doaj   +1 more source

Effects of methyl jasmonate, on stevioside and rebaudioside A content and expression of the ent-Kaurenoic acid 13-hydroxylase gene in Stevia rebaudiana Bert. in vitro [PDF]

open access: yesZīst/shināsī-i Giyāhī-i Īrān, 2014
Glycosides are a form of secondary metabolites that consist variety compounds and in some cases can play a role in primary metabolism. Steviol is lipophilic skeleton of Stevioside and Rebaudioside A, two main glycosides of Stevia rebuadiana.
Mehrdad Behmanesh   +2 more
doaj  

Isolation and Characterization of a Novel Rebaudioside M Isomer from a Bioconversion Reaction of Rebaudioside A and NMR Comparison Studies of Rebaudioside M Isolated from Stevia rebaudiana Bertoni and Stevia rebaudiana Morita

open access: yesBiomolecules, 2014
A minor product, rebaudioside M2 (2), from the bioconversion reaction of rebaudioside A (4) to rebaudioside D (3), was isolated and the complete structure of the novel steviol glycoside was determined.
Indra Prakash   +6 more
doaj   +1 more source

Structures of Some Novel α-Glucosyl Diterpene Glycosides from the Glycosylation of Steviol Glycosides [PDF]

open access: yesMolecules, 2014
Four new minor diterpene glycosides with a rare α-glucosyl linkage were isolated from a cyclodextrin glycosyltransferase glucosylated stevia extract containing more than 98% steviol glycosides. The new compounds were identified as 13-[(2-O-β-D-glucopyranosyl-3-O-(4-O-α-D-glucopyranosyl)-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy] ent-kaur-16-en-19-oic ...
Prakash, Indra, Chaturvedula, Venkata
openaire   +3 more sources

Scientific opinion on the safety of the extension of use of steviol glycosides (E 960) as a food additive

open access: yesEFSA Journal, 2015
Following a request from the European Commission, EFSA carried out an exposure assessment of steviol glycosides (E 960) arising from their use as a food additive, taking into account the proposed extension of uses.
EFSA Panel on Food Additives and Nutrient Sources added to Food (ANS)
doaj   +1 more source

Stevioside and rebaudioside A - predominant ent-kaurene diterpene glycosides of therapeutic potential: a review

open access: yesCzech Journal of Food Sciences, 2016
Stevia rebaudiana (Bertoni) is a Paraguayan perennial herb of the family Asteraceae. The leaves contain a great amount of secondary metabolites with a wide range of important biological activities commonly known as steviol glycosides which differ in ...
Ena GUPTA   +4 more
doaj   +1 more source

Modification of steviol glycosides using α-amylase

open access: yesLWT - Food Science and Technology, 2014
Abstract Stevia extract usually contains a high content of stevioside which produces a significant bitter aftertaste, thus limiting its commercial application as a high-potency sweetener in foods. In order to improve its organoleptic properties, the stevia extract (containing 90 g/100 g stevioside) was modified by α-amylase from Aspergillus oryzae (
Fayin Ye   +5 more
openaire   +1 more source

Biocatalytic β-glucosylation/β-galactosylation of Rebaudioside C by glycosynthases

open access: yesFood Materials Research
Extracts of Stevia rebaudiana Bertoni plant leaves contain a mixture of diterpene glycosides which possess high sweetness and are used as non-caloric sweeteners in foods and beverages.
Ye-Yang Yu   +7 more
doaj   +1 more source

Agrobacterium mediated transient gene silencing (AMTS) in Stevia rebaudiana: insights into steviol glycoside biosynthesis pathway. [PDF]

open access: yesPLoS ONE, 2013
BackgroundSteviol glycoside biosynthesis pathway has emerged as bifurcation from ent-kaurenoic acid, substrate of methyl erythritol phosphate pathway that also leads to gibberellin biosynthesis.
Praveen Guleria, Sudesh Kumar Yadav
doaj   +1 more source

Co-expression of anti-miR319g and miRStv_11 lead to enhanced steviol glycosides content in Stevia rebaudiana

open access: yesBMC Plant Biology, 2019
Background miRNAs are major regulators of gene expression and have proven their role in understanding the genetic regulation of biosynthetic pathways. Stevioside and rebaudioside-A, the two most abundant and sweetest compounds found in leaf extract of ...
Monica Saifi   +5 more
doaj   +1 more source

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