Withania somnifera (root)
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− | {{DISPLAYTITLE: ''Withania somnifera'' (root) }} | + | {{DISPLAYTITLE: ''Withania somnifera'' (root) }} {{askbox|herb=''Withania somnifera''}} |
=Nomenclature= | =Nomenclature= | ||
+ | |||
+ | {{nomenclature | binomial=Withania somnifera | ||
+ | |authority=(L.) Dunal | ||
+ | |family=Solanaceae | ||
+ | |scn=ashwagandha | ||
+ | |syn= | ||
+ | |ayurvedic=ashvagandha | ||
+ | |pinyin= | ||
+ | |aka=winter cherry | ||
+ | |notes= }} | ||
=Botanical Voucher Specimen= | =Botanical Voucher Specimen= | ||
+ | |||
+ | {{Media | cat=Voucher | ||
+ | |||
+ | | source=MOBOT, Tropicos.org | ||
+ | | mainimage=Withania_somnifera_Tropicos_100184298_(S).jpg | ||
+ | | companyimage=TropicosLogo.gif | ||
+ | | companyURL=http://www.tropicos.org/Image/100184298 | ||
+ | | reference=Tropicos.org. Missouri Botanical Garden. 26 Mar 2014 <http://www.tropicos.org/Image/100184298> | ||
+ | |||
+ | | }} | ||
=Organoleptic Characteristics= | =Organoleptic Characteristics= | ||
+ | {| border=1 | ||
+ | | {{Organolepsy| source=Natural Remedies Pvt Ltd | ||
+ | | companyURL=http://www.naturalremedy.com/ | ||
+ | | companyimage=Natural Remedies Logo.png | ||
+ | | description='''Color:''' Yellowish brown or light brown. Outer surface is buff to gray-yellow with longitudinal wrinkles and in the center soft, solid mass with scattered pores. | ||
− | + | '''Odor:''' Characteristic. | |
+ | '''Taste:''' Bitter and acrid. | ||
+ | }} | ||
+ | |} | ||
+ | =Macroscopic Characteristics= | ||
+ | {| border=1 | ||
+ | | | ||
+ | {| border=1 | ||
+ | | {{botcon |companyimage=Natural Remedies Logo.png | ||
+ | | companyURL=http://www.naturalremedy.com/ }} || {{botcon |companyimage=Encyclopedia of Life logo.png | ||
+ | | companyURL=http://eol.org/data_objects/19246862 }} || {{botcon |companyimage=Encyclopedia of Life logo.png | ||
+ | | companyURL=http://eol.org/data_objects/19246863 }} | ||
+ | |- | ||
+ | | {{botimg |mainimage=Withania somnifera - NR - Aerial parts.png | ||
+ | |caption1=Aerial parts | ||
+ | |source=Natural Remedies Pvt Ltd http://www.naturalremedy.com/}} | ||
+ | | {{botimg |mainimage=Withania somnifera - EOL - Flower.jpg | ||
+ | |caption1=Flower | ||
+ | |source=Encyclopedia of Life http://eol.org/data_objects/19246862 }} | ||
+ | | {{botimg |mainimage=Withania somnifera - EOL - Fruit.jpg | ||
+ | |caption1=Fruit | ||
+ | |source=Encyclopedia of Life http://eol.org/data_objects/19246863 }} | ||
+ | |} | ||
+ | |||
+ | {| border=1 | ||
+ | | {{botcon |companyimage=Encyclopedia of Life logo.png | ||
+ | | companyURL=http://eol.org/data_objects/19246864 }} || {{botcon |companyimage=Natural Remedies Logo.png | ||
+ | | companyURL=http://www.naturalremedy.com/ }} | ||
+ | |- | ||
+ | | {{botimg |mainimage=Withania somnifera - EOL - Ripe Fruit.jpg | ||
+ | |caption1=Ripe Fruit | ||
+ | |source=Encyclopedia of Life http://eol.org/data_objects/19246864 }} | ||
+ | | {{botimg |mainimage=Withania somnifera - NR - Dried Root.png | ||
+ | |caption1=Dried roots | ||
+ | |source=Natural Remedies Pvt Ltd http://www.naturalremedy.com/}} | ||
+ | |} | ||
+ | |} | ||
=Microscopic Characteristics= | =Microscopic Characteristics= | ||
+ | {| border=1 | ||
+ | | | ||
+ | {{Microscopy | source=Natural Remedies Pvt Ltd | ||
+ | | companyURL=http://www.naturalremedy.com/ | ||
+ | | companyimage=Natural Remedies Logo.png | ||
+ | | description='''Transverse section:''' The young roots have less secondary tissue and prominent cortex. Primary xylem is tetrarch. In matured roots, the cork cells are isodiametric and non-lignified. As the roots increases in diameter it produces more secondary tissue which has more of ray parenchyma cells. | ||
+ | |||
+ | The cells are nearly square in shape and in rows. Cells are filled with starch grains, small vascular bundles with one or two vessels and few fibers found in the secondary xylem. Intercellular spaces are present in phloem parenchyma while it is absent in xylem parenchyma. Fibers absent in phloem and present in xylem. Starch grains, simple, reniform and oval, normally found in parenchyma of the cortex andvascular region. | ||
+ | |||
+ | '''Powder:''' Nearly white in color, xylem vessels with scaleriform and pitted thickenings. Xylem parenchyma is having bordered pits. Plenty of starch grains varying in size, circular or oval in shape, singular and sometimes compound, 2-3 grains. | ||
+ | }} | ||
+ | |||
+ | {| border=1 | ||
+ | | {{botcon |companyimage=Natural Remedies Logo.png | ||
+ | | companyURL=http://www.naturalremedy.com/ }} || {{botcon |companyimage=Natural Remedies Logo.png | ||
+ | | companyURL=http://www.naturalremedy.com/ }} || {{botcon |companyimage=Natural Remedies Logo.png | ||
+ | | companyURL=http://www.naturalremedy.com/ }} | ||
+ | |- | ||
+ | | {{botimg |mainimage=Withania somnifera - NR - Thick Root TS.png | ||
+ | |caption1=Thick root transverse section (x100) | ||
+ | |source=Natural Remedies Pvt Ltd http://www.naturalremedy.com/}} | ||
+ | | {{botimg |mainimage=Withania somnifera - NR - Root TS.png | ||
+ | |caption1=Root transverse section | ||
+ | |source=Natural Remedies Pvt Ltd http://www.naturalremedy.com/}} | ||
+ | | {{botimg |mainimage=Withania somnifera - NR - Root TS x400.png | ||
+ | |caption1=Root transverse section (x400) | ||
+ | |source=Natural Remedies Pvt Ltd http://www.naturalremedy.com/}} | ||
+ | |} | ||
+ | |||
+ | {{Media2 |cat=Microscopy | source=Elan M. Sudberg, Alkemist Laboratories | ||
+ | | companyimage= AP-LOGO-Laboratories Crop - Copy.jpg | ||
+ | | companyURL=http://www.alkemist.com | ||
+ | | mainimage=Withania somnifera (root) powder 2-4 compound starch granules showing irregular hilum.png | ||
+ | | caption1=Root powder: 2-4 compound starch granules showing irregular hilum | ||
+ | | description= | ||
+ | | source2=Elan M. Sudberg, Alkemist Laboratories | ||
+ | | companyimage2= AP-LOGO-Laboratories Crop - Copy.jpg | ||
+ | | companyURL2=http://www.alkemist.com | ||
+ | | image2=Withania somnifera (root) powder microcrystals of calcium oxalate.png | ||
+ | | caption2=Root powder: microcrystals of calcium oxalate | ||
+ | | }} | ||
+ | |||
+ | |} | ||
+ | =High Performance Liquid Chromatographic Identification= | ||
+ | {| border=1 | ||
+ | | | ||
+ | |||
+ | {{Botanical | source=Natural Remedies Pvt Ltd | ||
+ | | companyURL=http://www.naturalremedy.com/ | ||
+ | | companyimage=Natural Remedies Logo.png | ||
+ | |mainimage=Withania somnifera - NR - ashwagandha HPLC.png | ||
+ | |caption1= | ||
+ | | | ||
+ | | description=Ashwagandha (root) (''Withania somnifera'') | ||
+ | |||
+ | '''Test Sample Preparation:''' Reflux for 20 minabout 5 g of coarse powdered plant material in 50 mL of methanol. Repeat the extraction 4-5times till the extract is nearly colorless. Combine the extracts and concentrate to about 100 mL.Before injection, filter through a 0.45-ummembrane filter. | ||
+ | |||
+ | '''Column:''' 25-cm x 4.6-mm, 5 um, PhenomenexLuna C18(2) | ||
+ | |||
+ | '''Mobile Phase:''' Dissolve 0.14 g of anhydrous potassium dihydrogen phosphate in 900 mL of water, add 0.5 mL phosphoric acid, mix, complete to volume with water, and mix (Solution A); and acetonitrile (Solution B) | ||
+ | |||
+ | '''Elution:''' Gradient, see Table below | ||
+ | |||
+ | '''Column Temperature:''' 25°C | ||
+ | |||
+ | '''Flow rate:'''1.5 mL/min | ||
+ | |||
+ | '''Detection:''' UV, 227 nm | ||
+ | |||
+ | '''Injection volume:''' 20 uL}} | ||
+ | '''Table: Relative retention time''' | ||
+ | {| border=1 | ||
+ | | Relative Retention Time || Peak | ||
+ | |- | ||
+ | |1.00 || Withanoside IV | ||
+ | |- | ||
+ | |1.07 || Physagulin D | ||
+ | |- | ||
+ | |1.15 || 27-hydroxywithanone | ||
+ | |- | ||
+ | |1.28 || Withanoside V and Withanoside VI | ||
+ | |- | ||
+ | |1.31 || Withaferin A | ||
+ | |- | ||
+ | |1.39 || Withastramonolide | ||
+ | |- | ||
+ | |1.45 || Withanolide A | ||
+ | |- | ||
+ | |1.47 || Withanone | ||
+ | |- | ||
+ | |1.68 || Withanolide B | ||
+ | |} | ||
+ | |||
+ | '''Table: Gradient program''' | ||
+ | {| border=1 | ||
+ | | Time (min) || Solution A (%) || Solution B (%) | ||
+ | |- | ||
+ | |0-18 || 95-55 || 5-45 | ||
+ | |- | ||
+ | |18-25 || 55-20 || 45-80 | ||
+ | |- | ||
+ | |25-28 || 20 || 80 | ||
+ | |- | ||
+ | |28-35 || 55 || 45 | ||
+ | |- | ||
+ | |35-40 || 55-95 || 45-5 | ||
+ | |- | ||
+ | |40-45 || 95 || 5 | ||
+ | |} | ||
+ | |} | ||
=High Performance Thin Layer Chromatographic Identification= | =High Performance Thin Layer Chromatographic Identification= | ||
+ | {{HPTLC | source=HPTLC Association | ||
+ | | companyimage=HPTLC-assoc-Logo-farbig-Text-schwarz-300x47.png | ||
+ | | companyURL=http://www.hptlc-association.org/ | ||
+ | | mainimage=Withania somnifera - HPTLC ASSOC.png | ||
+ | | caption1= | ||
+ | | description=Ashwagandha (root) (''Withania somnifera'') | ||
+ | | | ||
+ | | lanes=Lanes, from left to right (Track, Volume, Sample): | ||
+ | # 5 µL ''Withania somnifera'' extract (20 mg/mL) | ||
+ | # 10 µL ''Withania somnifera'' root | ||
+ | # 10 µL ''Withania somnifera'' root | ||
+ | # 10 µL ''Withania somnifera'' root | ||
+ | # 2 µL β-Sitosterol | ||
+ | # 2 µL Withanoside IV | ||
+ | # 2 µL Withanolide A | ||
+ | # 2 µL Withanone | ||
+ | # 2 µL Withanolide D | ||
+ | # 2 µL Withaferin A | ||
+ | | notes=<br> | ||
+ | '''Reference Standard Solution:'''0.2 mg/mL β-Sitosterolin methanol and 0.2 mg/mL withanolide A in methanol. Optional: 0.2 mg/mL withaferin A in methanol. | ||
+ | '''Reference Sample Preparations:''' Sonicate 0.5g of powdered sample in 5mL of methanol for 15 minutes, centrifuge or filter the solution, and use the supernatant / filtrate. | ||
+ | |||
+ | '''Stationary Phase:''' HPTLC, Silica gel 60 F254 | ||
+ | |||
+ | '''Mobile Phase:''' Toluene, ethyl acetate, acetic acid (55:45:3) | ||
+ | |||
+ | '''Development:''' Saturated chamber, developing distance 70 mm from lower edge of the plate; relative humidity 33%, temperature 25°C. | ||
+ | |||
+ | '''Derivatization reagent:''' Sulfuric Acid Reagent– 10% sulfuric acid in methanol (prepare fresh) | ||
+ | |||
+ | '''Detection:''' Dip (time 0, speed 5) in Derivatization reagent, heat plate at 100°C for 5 min,and examine under visible light. | ||
+ | |||
+ | '''Procedure:''' | ||
+ | |||
+ | Reference Standard Solutions, Stationary Phase, Mobile Phase, Derivatization reagent, and Detection, as described above. | ||
+ | |||
+ | '''Test Sample Preparation:''' Prepare test sample as described under Reference Sample Preparations andapply 10uL. | ||
+ | |||
+ | '''Identification:''' Compare Test Sample Preparation chromatogram with chromatograms of Reference Sample Preparations. The Test SamplePreparation chromatogram is similar to that of the Reference Sample Preparations chromatograms. Additional weak zones may be present. | ||
+ | |||
+ | The Test Sample Preparation chromatogram exhibits a grey-violet zoneand a brownish-violet zone at Rf corresponding to those of β-Sitosterol and withanolide A, respectively, in Reference Standard Solutionchromatogram, and two browninsh-violet zones in the lower third of the chromatogram at Rf lower than that corresponding to withanolide A in Reference Standard Solution chromatogram. | ||
+ | |||
+ | | }} | ||
=Supplementary Information= | =Supplementary Information= | ||
+ | |||
+ | ==Detection of Aerial Parts in Extracts of ''Withania somnifera'' Roots== | ||
+ | Deepak Mundkinajeddu, Laxman P. Sawant, Rojison Koshy, Praneetha Akunuri, Vineet Kumar Singh,1 Anand Mayachari, Maged H. M. Sharaf, Murali Balasubramanian, and Amit Agarwal | ||
+ | |||
+ | '''Introduction:''' | ||
+ | |||
+ | ''Withania somnifera'' root is considered to be the medicinally important part of the plant according to classical Ayurveda texts. The aerial parts, being less expensive, are sometimes mixed with roots to prepare extracts of ''W. somnifera''. Both aerial parts and root show similar qualitative chromatographic fingerprints for the withanolides’ content, which tend to be the criterion to standardize these extracts.Unlike the withanolides content, flavonoid glycosides are unique constituents of the aerial parts and are absent in roots of the plant. These flavonoids include quercetin 3-O-robinobioside-7-O-glucoside,quercetin 3-O-rutinoside-7-O-glucoside, and kaempferol3-O-robinobioside-7-O-glucoside. | ||
+ | |||
+ | '''Procedure:''' | ||
+ | '''Test Sample Preparation:''' Extract about 2 g of finely powdered plant material in 50 mL of methanol under reflux in a water bath for 20 min. Repeat the extraction 3 times. Combine the extracts and concentrate to about 100 mL. Before injection, filter through a 0.45-ummembrane filter. | ||
+ | |||
+ | '''Column:''' 25-cm x 4.6-mm, 5 um, PhenomenexLuna C18 | ||
+ | |||
+ | '''Mobile Phase:''' Dissolve 0.14 g of anhydrous potassium dihydrogen phosphate in 900 mL of water, add 0.5 mL phosphoric acid, mix, complete to volume with water, and mix (Solution A); and acetonitrile (Solution B) | ||
+ | |||
+ | '''Elution:''' Gradient, see Table below | ||
+ | |||
+ | '''Column Temperature:''' 25°C | ||
+ | |||
+ | '''Flow rate:''' 1.5 mL/min | ||
+ | |||
+ | '''Detection:''' UV, 350 nm | ||
+ | |||
+ | '''Injection volume:''' 20 uL | ||
+ | |||
+ | Detection of peaks corresponding to quercetin 3-O-robinobioside-7-O-glucoside (1), quercetin 3-O-rutinoside-7-O-glucoside (2), and kaempferol3-O-robinobioside-7-O-glucoside (3) indicates the presence of aerial parts. | ||
+ | |||
+ | ''Table: Gradient program'' | ||
+ | {| border=1 | ||
+ | | Time (min) || Solution A (%) || Solution B (%) | ||
+ | |- | ||
+ | | 0.0-12 || 90-80 || 10-20 | ||
+ | |- | ||
+ | | 12-18 || 80-55 || 20-45 | ||
+ | |- | ||
+ | | 18-25 || 55-20 || 45-80 | ||
+ | |- | ||
+ | | 25-28 || 20 || 80 | ||
+ | |- | ||
+ | | 28-35 || 20-55 || 80-45 | ||
+ | |- | ||
+ | | 35-40 || 55-90 || 45-10 | ||
+ | |- | ||
+ | | 40-45 || 90 || 10 | ||
+ | |} | ||
+ | |||
+ | Reference: | ||
+ | |||
+ | Mundkinajeddu D, Sawant LP, Koshy R, Akunuri P, Singh VK, Anand Mayachari, Sharaf MHM, Balasubramanian M, Agarwal A. Development and Validation of High Performance Liquid Chromatography Method for Simultaneous Estimation of Flavonoid Glycosides in ''Withania somnifera'' Aerial Parts. ''ISRN Analytical Chemistry'' 2014. http://dx.doi.org/10.1155/2014/351547 (accessed July 9, 2014) | ||
=Sources= | =Sources= |
Latest revision as of 15:45, 1 April 2016
Contents |
Nomenclature
Withania somnifera (L.) Dunal Solanaceae
Standardized common name (English): ashwagandha
Ayurvedic name(s): ashvagandha
Botanical Voucher Specimen
|
Organoleptic Characteristics
|
Macroscopic Characteristics
|
Microscopic Characteristics
|
High Performance Liquid Chromatographic Identification
Ashwagandha (root) (Withania somnifera) Test Sample Preparation: Reflux for 20 minabout 5 g of coarse powdered plant material in 50 mL of methanol. Repeat the extraction 4-5times till the extract is nearly colorless. Combine the extracts and concentrate to about 100 mL.Before injection, filter through a 0.45-ummembrane filter. Column: 25-cm x 4.6-mm, 5 um, PhenomenexLuna C18(2) Mobile Phase: Dissolve 0.14 g of anhydrous potassium dihydrogen phosphate in 900 mL of water, add 0.5 mL phosphoric acid, mix, complete to volume with water, and mix (Solution A); and acetonitrile (Solution B) Elution: Gradient, see Table below Column Temperature: 25°C Flow rate:1.5 mL/min Detection: UV, 227 nm Injection volume: 20 uL Source: Natural Remedies Pvt Ltd [14]
Table: Gradient program
|
High Performance Thin Layer Chromatographic Identification
Ashwagandha (root) (Withania somnifera) Lane Assignments Lanes, from left to right (Track, Volume, Sample):
Other Notes Reference Sample Preparations: Sonicate 0.5g of powdered sample in 5mL of methanol for 15 minutes, centrifuge or filter the solution, and use the supernatant / filtrate. Stationary Phase: HPTLC, Silica gel 60 F254 Mobile Phase: Toluene, ethyl acetate, acetic acid (55:45:3) Development: Saturated chamber, developing distance 70 mm from lower edge of the plate; relative humidity 33%, temperature 25°C. Derivatization reagent: Sulfuric Acid Reagent– 10% sulfuric acid in methanol (prepare fresh) Detection: Dip (time 0, speed 5) in Derivatization reagent, heat plate at 100°C for 5 min,and examine under visible light. Procedure: Reference Standard Solutions, Stationary Phase, Mobile Phase, Derivatization reagent, and Detection, as described above. Test Sample Preparation: Prepare test sample as described under Reference Sample Preparations andapply 10uL. Identification: Compare Test Sample Preparation chromatogram with chromatograms of Reference Sample Preparations. The Test SamplePreparation chromatogram is similar to that of the Reference Sample Preparations chromatograms. Additional weak zones may be present. The Test Sample Preparation chromatogram exhibits a grey-violet zoneand a brownish-violet zone at Rf corresponding to those of β-Sitosterol and withanolide A, respectively, in Reference Standard Solutionchromatogram, and two browninsh-violet zones in the lower third of the chromatogram at Rf lower than that corresponding to withanolide A in Reference Standard Solution chromatogram.
|
Supplementary Information
Detection of Aerial Parts in Extracts of Withania somnifera Roots
Deepak Mundkinajeddu, Laxman P. Sawant, Rojison Koshy, Praneetha Akunuri, Vineet Kumar Singh,1 Anand Mayachari, Maged H. M. Sharaf, Murali Balasubramanian, and Amit Agarwal
Introduction:
Withania somnifera root is considered to be the medicinally important part of the plant according to classical Ayurveda texts. The aerial parts, being less expensive, are sometimes mixed with roots to prepare extracts of W. somnifera. Both aerial parts and root show similar qualitative chromatographic fingerprints for the withanolides’ content, which tend to be the criterion to standardize these extracts.Unlike the withanolides content, flavonoid glycosides are unique constituents of the aerial parts and are absent in roots of the plant. These flavonoids include quercetin 3-O-robinobioside-7-O-glucoside,quercetin 3-O-rutinoside-7-O-glucoside, and kaempferol3-O-robinobioside-7-O-glucoside.
Procedure: Test Sample Preparation: Extract about 2 g of finely powdered plant material in 50 mL of methanol under reflux in a water bath for 20 min. Repeat the extraction 3 times. Combine the extracts and concentrate to about 100 mL. Before injection, filter through a 0.45-ummembrane filter.
Column: 25-cm x 4.6-mm, 5 um, PhenomenexLuna C18
Mobile Phase: Dissolve 0.14 g of anhydrous potassium dihydrogen phosphate in 900 mL of water, add 0.5 mL phosphoric acid, mix, complete to volume with water, and mix (Solution A); and acetonitrile (Solution B)
Elution: Gradient, see Table below
Column Temperature: 25°C
Flow rate: 1.5 mL/min
Detection: UV, 350 nm
Injection volume: 20 uL
Detection of peaks corresponding to quercetin 3-O-robinobioside-7-O-glucoside (1), quercetin 3-O-rutinoside-7-O-glucoside (2), and kaempferol3-O-robinobioside-7-O-glucoside (3) indicates the presence of aerial parts.
Table: Gradient program
Time (min) | Solution A (%) | Solution B (%) |
0.0-12 | 90-80 | 10-20 |
12-18 | 80-55 | 20-45 |
18-25 | 55-20 | 45-80 |
25-28 | 20 | 80 |
28-35 | 20-55 | 80-45 |
35-40 | 55-90 | 45-10 |
40-45 | 90 | 10 |
Reference:
Mundkinajeddu D, Sawant LP, Koshy R, Akunuri P, Singh VK, Anand Mayachari, Sharaf MHM, Balasubramanian M, Agarwal A. Development and Validation of High Performance Liquid Chromatography Method for Simultaneous Estimation of Flavonoid Glycosides in Withania somnifera Aerial Parts. ISRN Analytical Chemistry 2014. http://dx.doi.org/10.1155/2014/351547 (accessed July 9, 2014)
Sources
- ↑ MOBOT, Tropicos.org http://www.tropicos.org/Image/100184298
- ↑ Natural Remedies Pvt Ltd http://www.naturalremedy.com/
- ↑ Natural Remedies Pvt Ltd http://www.naturalremedy.com/
- ↑ Encyclopedia of Life http://eol.org/data_objects/19246862
- ↑ Encyclopedia of Life http://eol.org/data_objects/19246863
- ↑ Encyclopedia of Life http://eol.org/data_objects/19246864
- ↑ Natural Remedies Pvt Ltd http://www.naturalremedy.com/
- ↑ Natural Remedies Pvt Ltd http://www.naturalremedy.com/
- ↑ Natural Remedies Pvt Ltd http://www.naturalremedy.com/
- ↑ Natural Remedies Pvt Ltd http://www.naturalremedy.com/
- ↑ Natural Remedies Pvt Ltd http://www.naturalremedy.com/
- ↑ Elan M. Sudberg, Alkemist Laboratories http://www.alkemist.com
- ↑ Elan M. Sudberg, Alkemist Laboratories http://www.alkemist.com
- ↑ Natural Remedies Pvt Ltd http://www.naturalremedy.com/
- ↑ HPTLC Association http://www.hptlc-association.org/