A
Awantika Singh
Researcher at Central Drug Research Institute
Publications - 39
Citations - 793
Awantika Singh is an academic researcher from Central Drug Research Institute. The author has contributed to research in topics: Mass spectrometry & High-performance liquid chromatography. The author has an hindex of 16, co-authored 38 publications receiving 558 citations. Previous affiliations of Awantika Singh include Academy of Scientific and Innovative Research.
Papers
More filters
Journal ArticleDOI
Identification and characterization of phenolics and terpenoids from ethanolic extracts of Phyllanthus species by HPLC-ESI-QTOF-MS/MS
TL;DR: This method was developed using high-pressure liquid chromatography coupled with quadrupole time-of-flight tandem mass spectrometry for the identification and characterization of quercetin, kaempferol, ellagic acid and their derivatives in ethanolic extracts of Phyllanthus species.
Journal ArticleDOI
Rapid qualitative and quantitative analysis of bioactive compounds from Phyllanthus amarus using LC/MS/MS techniques
Sunil Kumar,Preeti Chandra,Preeti Chandra,Vikas Bajpai,Vikas Bajpai,Awantika Singh,Awantika Singh,Mukesh Srivastava,Mukesh Srivastava,D. K. Mishra,Brijesh Kumar,Brijesh Kumar +11 more
TL;DR: In this article, the authors developed a method for rapid screening of phytochemicals using high-pressure liquid chromatography hyphenated with quadrupole time-of-flight mass spectrometer (HPLC/ESI-QTOF-MS/MS).
Journal ArticleDOI
Structural characterization of flavonoid C- and O-glycosides in an extract of Adhatoda vasica leaves by liquid chromatography with quadrupole time-of-flight mass spectrometry.
Awantika Singh,Awantika Singh,Sunil Kumar,Vikas Bajpai,Vikas Bajpai,T. Jagadeshwar Reddy,T. Jagadeshwar Reddy,K. B. Rameshkumar,Brijesh Kumar,Brijesh Kumar +9 more
TL;DR: This method was successfully applied for analysis of flavonoids and their glycosides in Adhatoda vasica leaves and revealed cross-ring cleavages of the sugar attached to the C-6 position preferentially.
Journal ArticleDOI
Analysis of phytochemical variations in dioecious Tinospora cordifolia stems using HPLC/QTOF MS/MS and UPLC/QqQLIT -MS/MS.
Vikas Bajpai,Vikas Bajpai,Awantika Singh,Awantika Singh,Preeti Chandra,Preeti Chandra,Mahendra Pal Singh Negi,Nikhil Kumar,Brijesh Kumar,Brijesh Kumar +9 more
TL;DR: Phytochemicals in the stem of male and female Tinospora cordifolia showed significant qualitative and quantitative variations and LC-MS and MS/MS methods can be used to differentiate between male andFemale plants based on their chemical profiles and quantities of the marker bioactive alkaloids.
Journal ArticleDOI
Structural characterization of monoterpene indole alkaloids in ethanolic extracts of Rauwolfia species by liquid chromatography with quadrupole time-of-flight mass spectrometry.
Sunil Kumar,Awantika Singh,Awantika Singh,Vikas Bajpai,Vikas Bajpai,Mukesh Srivastava,Mukesh Srivastava,Bhim Singh,Brijesh Kumar,Brijesh Kumar +9 more
TL;DR: An efficient and reliable liquid chromatography-tandem mass spectrometry (LC–MS/MS) method for ethanolic root extract of Rauwolfia species is developed to elucidate the fragmentation pathways for dereplication of bioactive MIAs.