Kumar Katragunta

To pursue the career in the field of Analytical Chemistry emphasize in developing hyphenated chromatographic & spectrometric techniques for the characterization/quantitation of metabolites related to health care from natural, synthetic sources including toxins, and metal contaminants using mass spectrometric applications-based research in human health care and chemical ecology.

Scientist with demonstrated expertise in advanced research methodologies and data analysis. Strong focus on collaboration and adaptability to meet evolving project goals. Proficient in laboratory techniques, scientific writing, and presenting findings. Reliable team member known for driving impactful results in research settings.

• 1 Katragunta K; Avula B; Chittiboyina A.G; Lata H; Khan I.A. Quantitative LC-QTOF-MS analysis of Mycochemicals in Amanita muscaria, Psilocybe spp. (Agaricomycetes), and consumer products Int. J. Med. Mushrooms, 2025, 27, 29–39; DOI
• 2 Avula B.; Katragunta K.; Tatapudi, K.K.; Wang, Y-H.; Ali, Z.; Chittiboyina, A.G.; Khan, I.A. Phytochemical analysis of phenolics and diterpene lactones in Andrographis paniculata plant samples and dietary supplements J. Pharm. Biomed. Anal., 2025, 262, 116866; DOI
• 3 Avula B.; Katragunta K.; Adams, S.J.; Wang, Y-H.; Chittiboyina, A.G.; Khan, I.A. Applicability of LC-QToF and Microscopical Tools in Combating the Sophisticated, Economically Motivated Adulteration of Poppy Seeds Foods, 2023, 12, 1510; DOI
• 4 Avula B, Katragunta K, Wang Y-H, Ali Z, Khan I.A. Simultaneous determination and characterization of flavonoids, sesquiterpene lactone, and other phenolics from Centaurea benedicta and dietary supplements using UHPLC-PDA-MS and LC-DAD-QToF J. Pharm. Biomed. Anal., 2022, 216, 114806; DOI
• 5 Avula B, Katragunta K, Wang Y-H, Ali Z, Srivedavyassari R, Gafner S, Slimestad R, Khan I.A. Chemical profiling and UHPLC-QToF analysis for the simultaneous determination of anthocyanins and flavonoids in Sambucus berries and authentication and detection of adulteration in elderberry dietary supplements using UHPLC-PDA-MS J. Food Comp. Anal., 2022, 110, 104584; DOI
• 6 Avula B, Katragunta K, Wang Y-H, Upton R, Khan I.A. Analysis of Crocetins and Safranal Variations in Saffron (Crocus sativus) Stigma Samples and Dietary Supplements Using HPLC/UHPLC-PDA-MS: Chemical Profiling and Food Anal. Methods, 2022, 15, 2238–2259; DOI
• 7 Katragunta K, Siva B, Kondepudi N, Vadaparthi P.R.R, Rama Rao N, Tiwari A.K, Suresh Babu K. Chemometric Analysis Using LC-QToF Estimation of boswellic acids in herbal formulations containing Boswellia serrata extract and comprehensive characterization of secondary metabolites using UPLC-Q-ToF-MSe J. Pharm. Anal., 2019, 9, 414–422; DOI
• 8 Katragunta K, Siva B, Sarma V.U.M, Mohabe S, Reddy A.M, Boutsie J, Tiwari A.K, Rao N.R, Suresh Babu K. UPLC–MS/MS quantitative analysis and structural fragmentation study of five Parmotrema lichens from the Eastern Ghats. J. Pharm. Biomed. Anal., 2018, 156, 45–57; DOI
• 9 Katragunta K, Siva B, Rama Rao N, Suresh Babu K. Rapid identification of limonoids from Cipadessa baccifera and Xylocarpus granatum using ESI-Q-ToF-MS/MS and their structure-fragmentation study. J. Pharm. Biomed. Anal., 2018, 152, 224–233; DOI
• 10 Katragunta K, Ramesh B, Rao V.P.R, Poornima B, Sarma V.U.M, Srinath N, Rao M.V.B, Suresh Babu K. Validated High-Performance Thin-Layer Chromatographic Method for the Determination of Dibenzyl Cyclooctadiene Lignans from Schisandra grandiflora J. Planar Chromatogr–Modern TLC, 2014, 27, 460–465; DOI
• 11 Avula B, Katragunta K, Parveen I, Tatapudi, K.K; Chittiboyina, A.G; Wang, Y-H; Khan, I.A. Comprehensive Profiling of Free Proteinogenic and Non-Proteinogenic Amino Acids in Common Legumes Using LC-QToF: Targeted and Non-Targeted Approaches Foods 2025, 14, 611. DOI
• 12 Husain, I; Abdulrahman, B; Dale, O.R; Katragunta, K; Idrisi, M; Gurley, B.J; Ali, Z; Avula, B; Chittiboyina, A.G; Khan, I.A; Ujah, F.O; Khan, S.I. Interaction of Phyllanthus amarus extract and its lignans with human xenobiotic receptors, drug metabolizing enzymes and drug transporters J. Ethnopharmacol, 2025, 339, 119142. DOI
• 13 Annam, S.C.V.A.A.R; Neal, W.M; Pandey, P; Avula, B; Katragunta, K; Husain, I; Khan, S.I; Koturbash, I; Gurley, B.J; Khan, I.A; Chittiboyina, A.G. A Combined Approach for Rapid Dereplication of Herb–Drug Interaction Causative Agents in Botanical Extracts-A Molecular Networking Strategy To Identify Potential Pregnane X Receptor (PXR) Modulators in Yohimbe ACS Omega 2024, 9, 51394-51407. DOI
• 14 Crawford, C; Lindsey, A.T; Avula, B; Katragunta, K; Khan, I.A; Deuster, P.A. Label Accuracy and Quality of Select Weight-Loss Dietary Supplements Sold on or near US Military Bases Nutrients 2024, 16, 4369. DOI
• 15 Aldana-Mejia, J.A; Ribeiro, V.P; Katragunta, K; Avula, B; Tatapudi, K.K; Bastos, J.K; Khan, I.A; Meepagala, K; Biome Ross, S.A. Chemical Characterization and Antimicrobial Activity of Green Propolis from the Brazilian Caatinga Plants 2024, 13, 3576. DOI
• 16 Abilkassymova A, Aldana-Mejia, J.A.A, Katragunta K, Kozykeyeva R, Omarbekova A, Avula B, Turgumbayeva A, Dathkayeva U.M.M, Khan I.A, Ross S.A. Phytochemical Screening Using LC-MS to Study Antioxidant and Toxicity Potential of Methanolic Extracts of Atriplex pycniifolia Bunge Molecules, 2024, 29, 4478; DOI
• 17 Tileuberdin N, Katragunta K, Adams S.J, Aldana-Mejia J.A, Omarbekova A, Avula B, Khan I.A, Turgumbayeva A, Ross S.A. Comprehensive Quality Assessment of Brassica napus L. Seeds via HPTLC, LC-QToF, and Anatomical Investigation Molecules, 2024, 29, 2965; DOI
• 18 Crawford C, Avula B, Lindsey A.T, Katragunta K, Khan I.A, Deuster P.A. Label Accuracy of Weight Loss Dietary Supplements Marketed Online With Military Discounts JAMA Network Open, 2024, 7, e249131; DOI
• 19 Navarrete A, Katragunta K, Balderas-López J.L, Avula B, Khan I.A. Chemical profiling and quantification of flavones in several Pseudognaphalium and Gnaphalium species of Mexican gordolobo using UHPLC/PDA/MS J. Pharm. Biomed. Anal., 2024, 245, 116186; DOI
• 20 Adams S.J, Avula B, Katragunta K, Saroja S.G, Zhao J, Chittiboyina A.G, Khan I.A. Microscopy, HPTLC, and LC-DAD-QToF validation of nut-based weight-loss dietary supplements, Aleurites moluccanus (candlenut) and Bertholletia excelsa (Brazil nut) Food Addit. Contam. Part A, 2024, 41, 468–478; DOI
• 21 González-Anduaga G.M, Adams S.J, Dueñas-Deyá A, Pérez-Vásquez A, Avula B, Katragunta K, Khan I.A, Navarrete A. Chem. Biodiversity, 2024, 21, e202301709; DOI
• 22 Adams S.J, Lee J, Avula B, Katragunta K, Wang M, Parveen I, Techen N, Chittiboyina A.G, Khan, I.A. Investigation of morpho-anatomical, molecular, GC/Q-ToF, and LC/Q-ToF characterization of Salvia mellifera (black sage), Salvia apiana (white sage) and their varieties S. Afr. J. Bot., 2024, 164, 77–90; DOI
• 23 Tan L, He Y, Li S, Deng J, Avula B, Zhang J, Pugh N.D, Solis-Sainz J.C, Wang M, Katragunta K. Proximate composition and nutritional analysis of selected bananas cultivated in Hainan, China J. Food Comp. Anal, 2024, 125, 105798; DOI
• 24 Radi M.H, El-Shiekh R.A, Hegab A.M, Henry S.R, Avula B, Katragunta K, Khan I.A, El-Halawany A.M, Abdel-Sattar E. LC-QToF chemical profiling of Euphorbia grantii Oliv. and its potential to inhibit LPS-induced lung inflammation in rats via the NF-κB, CY4502E1, and P38 MAPK14 pathways Inflammopharmacology, 2024, 32, 461–494; DOI
• 25 Avula B, Katragunta K, Osman A.G, Ali Z, John Adams S, Chittiboyina A.G, Khan I.A. Advances in the Chemistry, Analysis and Adulteration of Anthocyanin Rich-Berries and Fruits: 2000–2022 Molecules, 2023, 28, 560; DOI
• 26 Kassymova D, Zhussupova G, Ogay V, Zhussupova A, Katragunta K, Avula B, Khan I.A. Phytochemical Profiles and In Vitro Immunomodulatory Activities of Extracts Obtained from Limonium Plants, 2023, 12, 4019; DOI
• 27 Abdel-Moez G, Avula B, Sayed H, Khalifa A, Ross S.A, Katragunta K, Khan I.A, Mohamed S. Phytochemical profiling of three Amaranthus species using LC-MS/MS metabolic approach and chemometric tools. J. Pharm. Biomed. Anal., 2023, 236, 115722; DOI
• 28 Cohen P.A, Avula B, Katragunta K, Travis J.C, Khan I.A. Presence and Quantity of Botanical Ingredients With Purported Performance-Enhancing Properties in Sports Supplements JAMA Network Open, 2023, 6, e2323879; DOI
• 29 Avula B, Bae J-Y, Ahn J, Katragunta K, Wang Y-H, Wang M, Kwon Y, Khan I.A, Chittiboyina A.G. 6-Oxofurostane and (iso) Spirostane Types of Saponins in Smilax sieboldii: UHPLC-QToF-MS/MS and GNPS-Molecular Networking Approach for the Rapid Dereplication and Biodistribution of Specialized Metabolites Int. J. Mol. Sci., 2023, 24, 11487; DOI
• 30 Manassov N, Samy M.N, Dathkayeva U, Avula B, Adams S.J, Katragunta K, Raman V, Khan I.A, Ross S.A. Ultrastructural, Energy-Dispersive X-ray Spectroscopy, Chemical Study and LC-DAD-QToF Chemical Characterization of Cetraria islandica (L.) Ach. Molecules, 2023, 28, 4493; DOI
• 31 Husain I, Dale O.R, Idrisi M, Gurley B.J, Avula B, Katragunta K, Ali Z, Chittiboyina A.G, Noonan G, Khan I.A. Evaluation of the Herb–Drug Interaction (HDI) Potential of Zingiber officinale and Its Major Phytoconstituents J. Agric. Food Chem., 2023, 71, 7521–7534; DOI
• 32 Cohen P.A, Avula B, Wang Y-H, Katragunta K, Khan I.A. Quantity of Melatonin and CBD in Melatonin Gummies Sold in the US JAMA, 2023, 329, 1401–1402; DOI
• 33 Osman A.G, Avula B, Katragunta K, Ali Z, Chittiboyina A.G, Khan I.A. Characterization of the Polyphenolic Chemical Composition, Quality Consistency, Safety, Adulteration, and Attenuation of Oxidative Stress and Inflammation-Induced Health Disorders Molecules, 2023, 28, 3148; DOI
• 34 Mukatuy O, Samy M.N, Avula B, Katragunta K, Kemelebk M, Zhubanova A, Khan I.A, Ross S.A. Isolation and LC-QToF Characterization of Secondary Metabolites from an Endemic Plant Artemisia hepatomatica Poljak Molecules, 2023, 28, 2908; DOI
• 35 Abdel-Sattar O.E, Allam R.M, Al-Abd A.M, Avula B, Katragunta K, Khan I.A, El-Desoky A.M, Mohamed S.O, El-Halawany A.M, Abdel-Sattar E. Cytotoxic and chemomodulatory effects of Phyllanthus niruri in MCF-7 and MCF-7ADR breast cancer cells Scientific Reports, 2023, 13, 2683; DOI
• 36 Eloutify Y.T, El-Shiekh R.A, Ibrahim K.M, Hamed A.R, Al-Karmalawy A.A, Shokry A.A, Ahmed Y.H, Avula B, Katragunta K, Khan I.A. Bioactive fraction from Plumeria obtusa L. attenuates LPS-induced acute lung injury in mice and inflammation in RAW 264.7 macrophages: LC/QToF-MS and molecular docking Inflammopharmacology, 2023, 31, 859–875; DOI
• 37 Eloutify Y.T, El-Shiekh R.A, Ibrahim K.M, Elshimy R, Avula B, Katragunta K, Khan I.A, Meselhy M.R. Bioassay-Guided Isolation of Antimicrobial Components and LC/QToF Profile of Plumeria obtusa: Potential for the Treatment of Antimicrobial Resistance ACS Omega, 2023, 8, 6476–6491; DOI
• 38 Tittikipina N.K, Katragunta K, Avula B, Ali Z, Khan I.A. Strategy for the quality control of herbal preparations made of Sarcocephalus latifolius: Development and validation of a UHPLC-PDA method for quantification of angustoline and strictosamide and chemical profiling using LC-QToF Phytochem. Anal., 2023, 34, 105–126; DOI
• 39 Raman V, Manfron J, Avula B, Zhao J, Katragunta K, Chittiboyina A.G, Khan I.A. Application of Microscopy in the Quality Control of Licorice Roots: Comparative Anatomy of the Roots and Rhizomes of Five Species of Glycyrrhiza Microsc. Microanal., 2022, 28, 2150–2166; DOI
• 40 Crawford C, Avula B, Lindsey A.T, Walter A, Katragunta K, Khan I.A, Deuster P.A. Analysis of Select Dietary Supplement Products Marketed to Support or Boost the Immune System JAMA Network Open, 2022, 5, e2226040; DOI
• 41 Cohen P.A, Avula B, Katragunta K, Khan I.A. Recalls, Availability, and Content of Dietary Supplements Following FDA Warning Letters JAMA, 2022, 328, 393–395; DOI
• 42 Cohen P.A, Avula B, Katragunta K, Khan I.A. Levodopa Content of Mucuna pruriens Supplements in the NIH Dietary Supplement Label Database JAMA Neurology, 2022, 79, 1085–1086; DOI
• 43 Liu Y-C, Katragunta K, Wu C-H, Chang K-C, Chiang C-K, Ho Y-P. Selective Capture and Identification of Methicillin-Resistant Staphylococcus aureus by Combining Aptamer-Modified Magnetic Nanoparticles and Mass Spectrometry Int. J. Mol. Sci., 2021, 22, 6571; DOI
• 44 Gupta M.K, Anand A, Asati A, Thati R, Katragunta K, Agarwal R, Mudiam M.K.R. Quantitative determination of phenolic antioxidants in fruit juices by GC-MS/MS using automated injector port silylation after QuEChERS extraction Microchem. J., 2021, 160, 105705; DOI
• 45 Sateesh Reddy K, Siva B, Divya Reddy S, Katragunta K, Pratap T.V, Vidyasagar Reddy K, Venkateswara Rao B, Suresh Babu K. Monitoring of Chemical Markers in Extraction of Traditional Medicinal Plants (Piper nigrum, Curcuma longa) Using In Situ ReactIR J. AOAC Int., 2021, 104, 1181–1187; DOI
• 46 Pavan Kumar P, Siva B, Katragunta K, Beedkar S.D, Ramakrishna S, Barua C.C, Suresh Babu K. Investigation of Cytotoxic Constituents from Seed Pulp of Entada Phaseoloides and Metabolite Profiling Using UPLC-QTOF-MSE J. AOAC Int., 2021, 104, 827–835; DOI
• 47 Anand, A; Komati, A; Katragunta, K; Shaik, H; Nagendra, N.K; Kuncha, M; Mudiam, M.K.R; Suresh Babu K; Tiwari, A.K. Phytometabolomic analysis of boiled rhizome of Nymphaea nouchali (Burm. f.) using UPLC-Q-TOF-MSE, LC-QqQ-MS & GC–MS and evaluation of antihyperglycemic and antioxidant activities Food Chemistry 2021, 342, 128313. DOI
• 48 Solipeta D.R, Bandi S, Katragunta K, Mutheneni S.R, Suresh Babu K. UPLC-MSE Guided Isolation of New Antifeedant Limonoids from Fruits of Trichilia connaroides J. Agric. Food Chem., 2020, 68, 6826–6834; DOI
• 49 Reddy S.D, Siva B, Katragunta K, Babu V.S.P, Sravanthi V, Boutsie J, Nayak V.L, Tiwari A.K, Rao C.V, Sridhar B, Suresh Babu K. Comprehensive Analysis of Secondary Metabolites in Usnea longissima (Lichenized Ascomycetes, Parmeliaceae) Using UPLC-ESI-QTOF-MS/MS and Pro-Apoptotic Activity of Barbatic Acid Molecules, 2019, 24, 2270; DOI
• 50 Bala Bhaskara Rao K, Katragunta K, Sarma U.M, Jain N. Abundance of d-2-hydroxyglutarate in G2/M is determined by FOXM1 in mutant IDH1-expressing cells FEBS Letters, 2019, 593, 2177–219; DOI
• 51 Nageswara Rao K, Katragunta K, Ghosh S. Total Synthesis of the Anticancer Marine Natural Product Mycalol. Eur. J. Org. Chem., 2018, 2018, 398–412; DOI
• 52 Vadaparthi P.R.R, Katragunta K, Pawar A.K.M, Suresh Babu K, Tiwari A.K, Kuncha M. Pharmacokinetic study on piplartine and piperine after oral administration of Piper chaba root by liquid chromatography-mass spectrometry Pharmacog. Mag., 2018;14, s161–s166; DOI
• 53 Udutha S, Shankar G, Borkar R.M, Katragunta K, Srinivasulu G, Guntuku L, Naidu V.G.M, Srinivas R. Identification and characterization of stress degradation products of sumatriptan succinate by using LC/Q-TOF-ESI-MS/MS and NMR: Toxicity evaluation of degradation products J. Mass Spectrom., 2018, 53, 963–975; DOI
• 54 Vemuri S.K, Banala R, Katragunta K, Madhuri V, Raju K, Annapareddy V.G.R, Goli P.V.S. Antioxidant, Anti-Inflammatory and Anti-diabetic Efficiency of Indian Medicinal Plants against Streptozotocin Induced Diabetes in Male Wistar Rats Free Radicals and Antioxidants, 2018, 8, 141–148; DOI
• 55 Poornima B, Anand Kumar D, Siva B, Venkanna A, Vadaparthi P.R.R, Katragunta K, Tiwari A.K, Suresh Babu K. Advanced glycation end-products inhibitors isolated from Schisandra grandiflora Nat. Prod. Res., 2016, 30, 493–496; DOI
• 56 Vadaparthi P.R.R, Pavan Kumar P, Katragunta K, Venkanna A, Lakshma Nayak V, Ramakrishna S, Suresh Babu K. Synthesis of costunolide derivatives by Pd-catalyzed Heck arylation and evaluation of their cytotoxic activities Med. Chem. Res., 2015, 24, 2871–2878; DOI
• 57 Ramesh B, Sarma V.U.M, Katragunta K, Suresh Babu K, Devi P.S. Simultaneous Determination of Six Marker Compounds in Piper nigrum L. and Species Comparison Study Using High-Performance Thin-Layer J. Planar Chromatogr–Modern TLC, 2015, 28, 280–286; DOI
• 58 Vadaparthi P.R.R, Katragunta K, Sarma V.U.M, Hussain Q. A, Suresh Babu K. Estimation of Costunolide and Dehydrocostus Lactone in Saussurea lappa and its Polyherbal Formulations followed by their Stability Studies Using HPLC-DAD Pharmacog. Mag., 2015, 11, 180–190; DOI
• 59 Kumar T.P, Manjula N, Katragunta K. Asymmetric aldol reactions of isatins catalyzed by phthalimido-prolinamide Tetrahedron: Asymmetry, 2015, 26, 1281–1284; DOI
• 60 Vineeth P, Vadaparthi P.R.R, Katragunta K, Babu B.D.J, Rao A, Suresh Babu K. Influence of organic solvents on nanoparticle formation and surfactants on release behaviour in-vitro using costunolide as model anticancer agent Int. J. Pharm. Pharm. Sci., 2014, 6, 638–645; DOI
• 61 Kumar C.G; Mongolla P; Nanubolu J.B; Rani P. U; Katragunta K. Metabolite profiling and biological activities of extrolites from Aspergillus turcosus strain KZR131 isolated from Kaziranga National Park, Assam, India. Technological Challenges and Developmental Trends. Apple Academic Press, New York, USA. 2017, 311-332.