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58543-16-1

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58543-16-1 Usage

Description

Rebaudioside A is a natural non-caloric sweetener derived from the stevia plant, specifically from the leaves of Stevia rebaudiana Bertoni. It is a glycoside and one of the predominant steviol glycosides found in the plant. Rebaudioside A is known for its sweetness, which is approximately 300-400 times that of sugar, and its negligible effect on blood glucose levels. This makes it a popular choice for those managing diabetes, high blood pressure, and weight loss. It is also characterized by its white powder form and is metabolized by gut microbiota to steviol, a compound with well-studied safety.

Uses

Used in Food and Beverage Industry:
Rebaudioside A is used as a natural, calorie-free sweetener for various applications in the food and beverage industry. It is favored for its sweetness and stability under different pH levels and heat conditions, making it suitable for a wide range of products, including beverages, tabletop sweeteners, and general foods.
Used in Pharmaceutical Applications:
Rebaudioside A is used in the treatment of various diseases, such as diabetes, high blood pressure, and weight loss, due to its ability to increase glucagon-like peptide 1 (GLP-1) secretion and its negligible effect on blood glucose levels. It is also used as a food additive and in dietary supplements to help manage these conditions.
Used in Diabetic and Carbohydrate-Controlled Diets:
Rebaudioside A is used as a natural sweetener for individuals with diabetes and those on carbohydrate-controlled diets, providing a sweet taste without the need for additional sugar or calories.
Used in Dietary Supplements:
Rebaudioside A is also utilized in dietary supplements, offering a healthy and natural alternative to artificial sweeteners for those seeking to maintain a balanced diet or manage specific health conditions.

benefits

Zero caloriesNo carbohydrateDoes not raise blood glucose or insulin levels (Zero Index Glycemic), safe for people with diabetesKeto, Vegan, and Gluten-Free

Biological Activity

Rebaudioside A is a natural non-caloric sweetener. It is one of the predominant steviol glycosides isolated from S. rebaudiana leaves. It increases glucagon-like peptide 1 (GLP-1) secretion in a 2-dimensional mouse intestine model. In a two bottle preference test, mice drink more water containing rebaudioside A than unsweetened water, though saccharin-sweetened water is still preferred. Rebaudioside A is metabolized by gut microbiota to steviol, a compound whose safety is widely studied. Consumption of rebaudioside A formulations by pre-diabetic patients did not increase fasting or 2 hour plasma glucose levels or insulin levels.

Safety

High-purity (95% minimum) of individual or combined steviol glycosides can be considered as GRAS (Generally Recognized as Safe) by the FDA. For example, FDA had no questions regarding Guilin Layn's conclusion that its reb A (≥97% by weight (w/w)) is GRAS as a table top sweetener and as a general purpose sweetener in foods, excluding meat and poultry products and infant formulas.Its safety has also been approved by the EFSA, JECFA, FSANZ and other authorities.

Check Digit Verification of cas no

The CAS Registry Mumber 58543-16-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,8,5,4 and 3 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 58543-16:
(7*5)+(6*8)+(5*5)+(4*4)+(3*3)+(2*1)+(1*6)=141
141 % 10 = 1
So 58543-16-1 is a valid CAS Registry Number.
InChI:InChI=1/C44H70O23/c1-16-10-44-8-5-23-42(2,6-4-7-43(23,3)41(59)67-39-34(58)31(55)27(51)21(14-47)63-39)24(44)9-18(17(16)11-44)60-40-36(66-38-33(57)30(54)26(50)20(13-46)62-38)35(28(52)22(15-48)64-40)65-37-32(56)29(53)25(49)19(12-45)61-37/h17-40,45-58H,1,4-15H2,2-3H3/t17?,18?,19-,20-,21-,22-,23+,24+,25-,26-,27-,28-,29+,30+,31+,32-,33-,34-,35?,36-,37+,38+,39?,40-,42-,43-,44?/m1/s1

58543-16-1 Well-known Company Product Price

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  • TCI America

  • (R0095)  Rebaudioside A  >98.0%(HPLC)

  • 58543-16-1

  • 5g

  • 490.00CNY

  • Detail
  • TCI America

  • (R0095)  Rebaudioside A  >98.0%(HPLC)

  • 58543-16-1

  • 25g

  • 1,590.00CNY

  • Detail
  • Sigma-Aldrich

  • (38462)  Rebaudioside A  analytical reference material

  • 58543-16-1

  • 38462-10MG

  • 2,231.19CNY

  • Detail

58543-16-1SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name Rebaudioside A

1.2 Other means of identification

Product number -
Other names REBAUDIOSIDE A

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:58543-16-1 SDS

58543-16-1Synthetic route

stevioside
57817-89-7

stevioside

Sucrose
57-50-1

Sucrose

rebaudioside A
58543-16-1

rebaudioside A

Conditions
ConditionsYield
With Arabidopsis thaliana sucrose synthase gene; UDP-glucosyltransferase from Stevia rebaudiana, recombinant; magnesium chloride In aq. phosphate buffer at 30℃; for 30h; pH=7.2; Time; Enzymatic reaction;78%
13-O-β-D-glucopyranosyl-19-O-β-D-glucopyranosylsteviol
64849-39-4, 104873-42-9

13-O-β-D-glucopyranosyl-19-O-β-D-glucopyranosylsteviol

rebaudioside A
58543-16-1

rebaudioside A

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: magnesium chloride; UDP-glucosyltransferase UGTSL / aq. phosphate buffer / 1 h / 30 °C / pH 7.2 / Enzymatic reaction
2: magnesium chloride; UDP-glucosyltransferase UGT76G1 / aq. phosphate buffer / 30 °C / pH 7.2 / Enzymatic reaction
View Scheme
Multi-step reaction with 2 steps
1: magnesium chloride; UGT91D2 / aq. phosphate buffer / 1 h / 30 °C
2: magnesium chloride; UGT76G1 / aq. phosphate buffer / 30 °C
View Scheme
UDP-glucose
133-89-1

UDP-glucose

rebaudioside A
58543-16-1

rebaudioside A

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: magnesium chloride; UDP-glucosyltransferase UGTSL / aq. phosphate buffer / 1 h / 30 °C / pH 7.2 / Enzymatic reaction
2: magnesium chloride; UDP-glucosyltransferase UGT76G1 / aq. phosphate buffer / 30 °C / pH 7.2 / Enzymatic reaction
View Scheme
Multi-step reaction with 2 steps
1: magnesium chloride; UGT91D2 / aq. phosphate buffer / 1 h / 30 °C
2: magnesium chloride; UGT76G1 / aq. phosphate buffer / 30 °C
View Scheme
UDP-glucose
133-89-1

UDP-glucose

stevioside
57817-89-7

stevioside

rebaudioside A
58543-16-1

rebaudioside A

Conditions
ConditionsYield
With UDP-glucosyltransferase UGT76G1; magnesium chloride In aq. phosphate buffer at 30℃; pH=7.2; Catalytic behavior; Kinetics; Enzymatic reaction; chemoselective reaction;
With UGT76G1; magnesium chloride In aq. phosphate buffer at 30℃;
uridine-5'-diphosphoglucose
952585-00-1

uridine-5'-diphosphoglucose

stevioside
57817-89-7

stevioside

rebaudioside A
58543-16-1

rebaudioside A

Conditions
ConditionsYield
With UDP-glucosyltransferase from Stevia rebaudiana, recombinant; magnesium chloride In aq. phosphate buffer at 30℃; for 1h; pH=7.2; Time; Enzymatic reaction;
stevioside
57817-89-7

stevioside

rebaudioside A
58543-16-1

rebaudioside A

Conditions
ConditionsYield
With β-1,3-glucanase from Irpex lacteus In aq. buffer at 55℃; for 3h; pH=4.5; Enzymatic reaction;150 mg
Sucrose
57-50-1

Sucrose

rebaudioside A
58543-16-1

rebaudioside A

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sucrose synthase / Enzymatic reaction
2: magnesium chloride; UGT76G1 / aq. phosphate buffer / 30 °C
View Scheme
Multi-step reaction with 3 steps
1: sucrose synthase / Enzymatic reaction
2: magnesium chloride; UGT91D2 / aq. phosphate buffer / 1 h / 30 °C
3: magnesium chloride; UGT76G1 / aq. phosphate buffer / 30 °C
View Scheme
13-[(2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-ent-kaur-16-en-19-oic acid [(2-O-β-D-glucopyranosyl-6-O-β-D-glucopyranosyl-β-D-glucopyranosyl) ester]

13-[(2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-ent-kaur-16-en-19-oic acid [(2-O-β-D-glucopyranosyl-6-O-β-D-glucopyranosyl-β-D-glucopyranosyl) ester]

A

13-[(2-O-β-D-glucopyranosyI-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-ent-kaur-16-en-19-oic acid [(6-O-β-D-glucopyranosyl-β-D-glucopyranosyl) ester]

13-[(2-O-β-D-glucopyranosyI-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-ent-kaur-16-en-19-oic acid [(6-O-β-D-glucopyranosyl-β-D-glucopyranosyl) ester]

B

rebaudioside A
58543-16-1

rebaudioside A

Conditions
ConditionsYield
With naringinase In aq. acetate buffer at 30℃; for 3.3h; Enzymatic reaction;
(13-[((2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl)-β-D-glucopyranosyl)oxy]-ent-kaur-16-en-19-oic acid-(3-O-β-D-glucopyranosyl)-β-D-glucopyranosyl) ester

(13-[((2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl)-β-D-glucopyranosyl)oxy]-ent-kaur-16-en-19-oic acid-(3-O-β-D-glucopyranosyl)-β-D-glucopyranosyl) ester

rebaudioside A
58543-16-1

rebaudioside A

Conditions
ConditionsYield
With isolase In aq. acetate buffer at 30℃; for 18h; Enzymatic reaction;
13-O-[2,3-di-O-(2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl)-4,6-O-benzylidene-β-D-glucopyranosyl]steviol (2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl) ester

13-O-[2,3-di-O-(2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl)-4,6-O-benzylidene-β-D-glucopyranosyl]steviol (2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl) ester

rebaudioside A
58543-16-1

rebaudioside A

Conditions
ConditionsYield
Stage #1: 13-O-[2,3-di-O-(2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl)-4,6-O-benzylidene-β-D-glucopyranosyl]steviol (2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl) ester With toluene-4-sulfonic acid In methanol; dichloromethane at 20℃;
Stage #2: With sodium methylate In methanol at 20℃; for 6h;
34 mg
rebaudioside A
58543-16-1

rebaudioside A

rebaudioside B
58543-17-2

rebaudioside B

Conditions
ConditionsYield
With water; potassium hydroxide at 90℃; for 1h;98%
With water; potassium hydroxide at 90℃; for 6h;70%
With water Alkaline conditions;
With potassium hydroxide In water for 1h; Reflux;
rebaudioside A
58543-16-1

rebaudioside A

B

isosteviol
30195-84-7

isosteviol

C

13-hydroxy-ent-kaur-15-en-19-oic acid
129836-86-8

13-hydroxy-ent-kaur-15-en-19-oic acid

Conditions
ConditionsYield
With hydrogenchloride; water for 8h; Reflux;A n/a
B 36%
C n/a
rebaudioside A
58543-16-1

rebaudioside A

Conditions
ConditionsYield
Stage #1: rebaudioside A With sodium periodate In water at 20℃; for 48h; Darkness;
Stage #2: With water; potassium hydroxide for 1.5h; Heating; Darkness;
16%
rebaudioside A
58543-16-1

rebaudioside A

iso-rebaudioside A
1058600-85-3

iso-rebaudioside A

Conditions
ConditionsYield
With citric acid In water at 21 - 90℃; for 72 - 1848h; pH=2.0 - 7.0; Product distribution / selectivity;
rebaudioside A
58543-16-1

rebaudioside A

A

13-[(2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-ent-kaur-15-en-19-oic acid
1131877-91-2

13-[(2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-ent-kaur-15-en-19-oic acid

B

iso-rebaudioside A
1058600-85-3

iso-rebaudioside A

C

13-methyl-16-oxo-17-nor-ent-kauran-19-oic acid-β-D-glucopyranosyl ester
1347574-22-4

13-methyl-16-oxo-17-nor-ent-kauran-19-oic acid-β-D-glucopyranosyl ester

D

13-[(2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-16β-hydroxy-ent-kauran-19-oic acid
1185737-12-5

13-[(2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-16β-hydroxy-ent-kauran-19-oic acid

E

13-[(2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-16-hydroxykauran-18-oic acid β-D-glucopyranosyl ester
1058600-91-1

13-[(2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-16-hydroxykauran-18-oic acid β-D-glucopyranosyl ester

Conditions
ConditionsYield
With phosphoric acid; water at 80℃; for 24h; pH=2;
rebaudioside A
58543-16-1

rebaudioside A

A

13-[(2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-ent-kaur-15-en-19-oic acid
1131877-91-2

13-[(2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-ent-kaur-15-en-19-oic acid

B

iso-rebaudioside A
1058600-85-3

iso-rebaudioside A

C

13-[(2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-16β-hydroxy-ent-kauran-19-oic acid
1185737-12-5

13-[(2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-16β-hydroxy-ent-kauran-19-oic acid

D

13-[(2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-16-hydroxykauran-18-oic acid β-D-glucopyranosyl ester
1058600-91-1

13-[(2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-16-hydroxykauran-18-oic acid β-D-glucopyranosyl ester

Conditions
ConditionsYield
With phosphoric acid; water at 80℃; for 24h; pH=2;
rebaudioside A
58543-16-1

rebaudioside A

A

13-hydroxy-ent-kaur-16-en-19-oic acid β-D-glucopyranosyl ester

13-hydroxy-ent-kaur-16-en-19-oic acid β-D-glucopyranosyl ester

B

rebaudioside G

rebaudioside G

Conditions
ConditionsYield
With carbon dioxide; phosphoric acid; water at 40℃; for 1680h; pH=2.8;
rebaudioside A
58543-16-1

rebaudioside A

(16S)-13-hydroxy-ent-kauran-19-oic acid
110547-87-0

(16S)-13-hydroxy-ent-kauran-19-oic acid

Conditions
ConditionsYield
Stage #1: rebaudioside A With hydrogenchloride; water for 8h; Reflux;
Stage #2: With Ni-Al; hydrazine hydrate; potassium hydroxide In water at 80℃; for 8h; stereospecific reaction;
Multi-step reaction with 2 steps
1: hydrogenchloride; water / 8 h / Reflux
2: Ni-Al; hydrazine hydrate; potassium hydroxide / water / 8 h / 80 °C
View Scheme
rebaudioside A
58543-16-1

rebaudioside A

A

dihydrebaudioside A1
1393588-08-3

dihydrebaudioside A1

B

dihydrebaudioside A2
1393588-09-4

dihydrebaudioside A2

Conditions
ConditionsYield
With hydrogen; palladium(II) hydroxide In ethanol; water at 20℃; under 2844.39 Torr; for 120h;A n/a
B n/a
rebaudioside A
58543-16-1

rebaudioside A

[2H3]-16,17-dihydrorebaudioside A

[2H3]-16,17-dihydrorebaudioside A

Conditions
ConditionsYield
With palladium on activated charcoal; deuterium In methanol at 20℃; under 760.051 Torr;
rebaudioside A
58543-16-1

rebaudioside A

steviolbioside
41093-60-1

steviolbioside

Conditions
ConditionsYield
With potassium hydroxide In ethanol at 110℃; for 1.5h;80 mg
rebaudioside A
58543-16-1

rebaudioside A

C38H51BrO25

C38H51BrO25

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: water; potassium hydroxide / 1 h / 90 °C
2: dmap; triethylamine / 2 h / 60 °C
3: hydrogen bromide; acetic acid / dichloromethane / 3.5 h / 20 °C
View Scheme
rebaudioside A
58543-16-1

rebaudioside A

C58H80O28

C58H80O28

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: water; potassium hydroxide / 1 h / 90 °C
2: dmap; triethylamine / 2 h / 60 °C
View Scheme
Multi-step reaction with 2 steps
1: potassium hydroxide; water / 6 h / 90 °C
2: sodium acetate / 2.5 h / 140 °C
View Scheme
rebaudioside A
58543-16-1

rebaudioside A

Sucrose
57-50-1

Sucrose

rebaudioside M

rebaudioside M

Conditions
ConditionsYield
With sucrose synthase 1 AtSUS; UDP-glucosyltransferase UGT76G1-R1-F12; UDP-glucosyltransferase UGTSL2; UDP; magnesium chloride In aq. phosphate buffer pH=7.5; Catalytic behavior; Enzymatic reaction; chemoselective reaction;
UDP-glucose
133-89-1

UDP-glucose

rebaudioside A
58543-16-1

rebaudioside A

13-[(2-O-β-D-glucopyranosyI-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-ent-kaur-16-en-19-oic acid [(6-O-β-D-glucopyranosyl-β-D-glucopyranosyl) ester]

13-[(2-O-β-D-glucopyranosyI-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-ent-kaur-16-en-19-oic acid [(6-O-β-D-glucopyranosyl-β-D-glucopyranosyl) ester]

Conditions
ConditionsYield
With UDP-glucosyltransferase S115N06 E1; magnesium chloride In aq. phosphate buffer at 30℃; for 24h; pH=7.2; Catalytic behavior; Enzymatic reaction; chemoselective reaction;
UDP-glucose
133-89-1

UDP-glucose

rebaudioside A
58543-16-1

rebaudioside A

A

rebaudioside D
63279-13-0

rebaudioside D

B

13-[(2-O-β-D-glucopyranosyI-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-ent-kaur-16-en-19-oic acid [(6-O-β-D-glucopyranosyl-β-D-glucopyranosyl) ester]

13-[(2-O-β-D-glucopyranosyI-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-ent-kaur-16-en-19-oic acid [(6-O-β-D-glucopyranosyl-β-D-glucopyranosyl) ester]

Conditions
ConditionsYield
With UDP-glucosyltransferase S115N05 A7; magnesium chloride In aq. phosphate buffer at 30℃; for 24h; pH=7.2; Catalytic behavior; Enzymatic reaction; chemoselective reaction;
UDP-glucose
133-89-1

UDP-glucose

rebaudioside A
58543-16-1

rebaudioside A

rebaudioside D
63279-13-0

rebaudioside D

Conditions
ConditionsYield
With UDP-glucosyltransferase UGTSL; magnesium chloride In aq. phosphate buffer at 30℃; for 45h; pH=7.2; Catalytic behavior; Kinetics; Reagent/catalyst; Enzymatic reaction; chemoselective reaction;
With UGTSL2; magnesium chloride In aq. phosphate buffer at 30℃; for 22h;
With EUGT11 enzyme (SEQ ID NO:16) In aq. buffer at 30℃; for 24h; pH=8; Reagent/catalyst; Enzymatic reaction;
With uridine 5'-diphospho glycosyl transferase EUGT11, N-terminal HIS-tag, N-terminal GST-tag In aq. buffer at 37℃; for 48h; pH=7; Kinetics; Reagent/catalyst; Temperature; Enzymatic reaction;
UDP-glucose
133-89-1

UDP-glucose

rebaudioside A
58543-16-1

rebaudioside A

(13-[((2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl)-β-D-glucopyranosyl)oxy]-ent-kaur-16-en-19-oic acid-(3-O-β-D-glucopyranosyl)-β-D-glucopyranosyl) ester

(13-[((2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl)-β-D-glucopyranosyl)oxy]-ent-kaur-16-en-19-oic acid-(3-O-β-D-glucopyranosyl)-β-D-glucopyranosyl) ester

Conditions
ConditionsYield
With uridine diphosphate-glycosyltransferase; magnesium chloride In aq. phosphate buffer at 30℃; for 42h; pH=7.5; Enzymatic reaction;
With magnesium chloride In aq. phosphate buffer at 30℃; for 42h;
UDP-glucose
133-89-1

UDP-glucose

rebaudioside A
58543-16-1

rebaudioside A

13-[(2-O-(β-D-glucopyranosyl)-3-O-(β-D-glucopyranosyl)-β-D-glucopyranosyl)oxy]ent-kaur-16-en-19-oic acid 2-O-(β-D-glucopyranosyl)-3-O-(β-D-glucopyranosyl)-β-D-glucopyranosyl ester
1220616-44-3

13-[(2-O-(β-D-glucopyranosyl)-3-O-(β-D-glucopyranosyl)-β-D-glucopyranosyl)oxy]ent-kaur-16-en-19-oic acid 2-O-(β-D-glucopyranosyl)-3-O-(β-D-glucopyranosyl)-β-D-glucopyranosyl ester

Conditions
ConditionsYield
With sucrose synthase; isolase; UGTSL2; magnesium chloride In aq. phosphate buffer Enzymatic reaction;

58543-16-1Relevant articles and documents

Efficient enzymatic production of rebaudioside A from stevioside

Wang, Yu,Chen, Liangliang,Li, Yan,Li, Yangyang,Yan, Ming,Chen, Kequan,Hao, Ning,Xu, Lin

, p. 67 - 73 (2016)

Stevioside and rebaudioside A are the chief diterpene glycosides present in the leaves of Stevia rebaudiana. Rebaudioside A imparts a desirable sweet taste, while stevioside produces a residual bitter aftertaste. Enzymatic synthesis of rebaudioside A from stevioside can increase the ratio of rebaudioside A to stevioside in steviol glycoside products, providing a conceivable strategy to improve the organoleptic properties of steviol glycoside products. Here, we demonstrate the efficient conversion of stevioside to rebaudioside A by coupling the activities of recombinant UDP-glucosyltransferase UGT76G1 from S. rebaudiana and sucrose synthase AtSUS1 from Arabidopsis thaliana. The conversion occurred via regeneration of UDP-glucose by AtSUS1. UDP was applicable as the initial material instead of UDP-glucose for UDP-glucose recycling. The amount of UDP could be greatly reduced in the reaction mixture. Rebaudioside A yield in 30 h with 2.4mM stevioside, 7.2mM sucrose, and 0.006mM UDP was 78%.

Diversity-Oriented Synthesis of Steviol Glycosides

Qiao, Zhi,Liu, Hui,Sui, Jing-Jing,Liao, Jin-Xi,Tu, Yuan-Hong,Schmidt, Richard R.,Sun, Jian-Song

, p. 11480 - 11492 (2018/09/25)

With cheap and easily available mixtures of steviol glycosides as starting materials, a practical method for steviol acquisition has been developed, on the basis of which a facile, diversity-oriented, and economic protocol for the synthesis of structurally defined steviol glycosides was established. The novel approach is featured by the highly efficient glycosylation of sterically hindered and acid-sensitive steviol via orchestrated application of Yu glycosylation, Schmidt glycosylation, and PTC glycosylation. Hence, these high-intensity sweeteners and potential lead compounds for drug development are now readily accessible.

HIGH-PURITY STEVIOL GLYCOSIDES

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Page/Page column 9; 46-47; 52-53, (2014/12/12)

Methods of preparing highly purified steviol glycosides, particularly rebaudiosides A, D and M are described. The methods include utilizing recombinant microorganisms for converting various staring compositions to target steviol glycosides. In addition, novel steviol glycosides reb D2 and reb M2 are disclosed, as are methods of preparing the same. The highly purified rebaudiosides are useful as non-caloric sweetener in edible and chewable compositions such as any beverages, confectioneries, bakery products, cookies, and chewing gums.

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