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Open research questions in Phytochemicals and Medicinal Plants

29 unresolved questions extracted from the limitations and future-work sections of 311 Phytochemicals and Medicinal Plants papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Rigorous translational research employing modern analytical tools — ICP-MS, X-ray diffractometry, FTIR spectroscopy, and randomised clinical trials — is warranted to fully elucidate the bioavailability, pharmacokinetics, and therapeutic efficacy of these classical preparations, thereby facilitating their evidence-based integration into contemporary integrative medicine practice.

    AYASKRITI: A CRITICAL SCHOLARLY REVIEW OF CLASSICAL IRON PREPARATIONS IN AYURVEDA WITH CONTEMPORARY BIOMEDICAL CORRELATIONS · 2026 · DOI

  • Scientific Validation There is an urgent need to scientifically validate the Shodhana, Marana, and Bhasmikarana processes using advanced analytical techniques such as X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), and Inductively Coupled Plasma Mass Spectrometry (ICP-MS). These techniques can establish the particle size, chemical composition, and crystalline structure of Bhasma, ensuring reproducibility and safety.

    CHALLENGES AND FUTURE DIRECTIONS IN GLOBALIZATION OF RASASHASTRA BASED HERBO - MINERAL DRUGS · 2026 · DOI

  • The present findings establish a foundation for the mechanis- tic and translational exploration of hydroalcoholic extracts of W. somnifera, T. crispa, C. zeylanicum, and P. longum. 1 3Journal of Pharmaceutical Innovation (2026) 21:537 Future research should prioritize bioassay-guided fraction- ation to isolate and structurally characterize the specific phenolic, alkaloid, and terpenoid constituents responsible for the observed antioxidant activities. Advanced analytical techniques such as LC–MS/MS, HPLC fingerprinting, and NMR spectroscopy are recommended for compound-level validation and standardization. In vitro antioxidant assays should be complemented with cellular and in vivo models to elucidate mechanisms beyond direct radical scavenging, including the modula- tion of endogenous antioxidant enzymes (e.g., SOD, CAT, and GPx), redox-sensitive signalling pathways (e.g., Nrf2/ Keap1), and inflammatory mediators. Additionally, the syn- ergistic evaluation of combined extracts may provide sci- entific validation for traditional polyherbal formulations. Long-term studies focusing on pharmacokinetics, safety profiling, and clinical efficacy in oxidative stress–associated disorders will be essential for therapeutic translation and evidence-based standardization. Acknowledgements I would like to thank our Director Prof. (Dr.) Abhijit Sengupta and Principal Prof. (Dr.) Lopamudra Datta, for pro- viding me this opportunity to work on this research article. I am also very grateful to Dr. Bhaskar Choudhury, my mentor, for his expert advice and encouragement throughout this manuscript’s preparation. Author Contributions R.P., and B.C. contributed to the study’s con- ception and design. R.P. and B.C. collected the data. R.P. performed the analysis. R.P. and B.C. wrote the original manuscript. All authors proofread and approved the manuscript for submission. Data Availability No datasets were generated or analysed during the current study.

    FTIR-Guided Antioxidant Profiling of Selected Indian Botanicals for Potential Application in Oxidative Stress Management · 2026 · DOI

  • Several limitations warrant acknowledgement. The cohort data presented are retrospective, observational, and derived from a single centre with a small heterogeneous sample, precluding causal inference. The absence of a control group limits attribution of improvements specifically to robotic therapy versus natural recovery or conventional co-interventions. Variability in documentation completeness reduced the number of patients available for each outcome analysis. The review component, while comprehensive in scope, did not employ formal systematic review methodology and may be subject to publication bias. Future research should prioritise prospective randomised controlled trials with standardised protocols, larger sample sizes, longer and patient-reported outcome follow-up periods, measures. 7. CONCLUSION Robotic neurorehabilitation represents a clinically and scientifically well-grounded approach to functional recovery in patients with non-stroke neural injuries. Evidence from the published literature, corroborated by from Oman, demonstrates real-world cohort data meaningful improvements in motor power, balance, and gait speed following robotic training. Our retrospective study establishes the proof of concept and its feasibility in Oman. Benefits are most pronounced in patients with incomplete injuries, in the subacute phase of recovery, and with sufficient treatment duration. As robotic rehabilitation increasingly accessible globally including in the Arabian Gulf region, in systematic outcome prospective research will be essential to optimise patient selection, treatment protocols, and resource allocation. reporting and technology investment becomes REFERENCES 1. World Health Organization. Rehabilitation 2030: A Call for Action. Geneva: WHO; 2017. 2. Mehrholz J, Thomas S, Kugler J, Pohl M, Elsner B. Electromechanical-assisted training for walking after stroke. Cochrane Database Syst Rev, 2020; 10: CD006185. www.ejpmr.com │ Vol 13, Issue 6, 2026.

    ROBOTIC NEUROREHABILITATION IN NON-STROKE NEURAL INJURIES: A NARRATIVE REVIEW WITH ILLUSTRATIVE COHORT DATA · 2026 · DOI

  • Based on the findings of the study, the following recommendations are proposed: 1. Subsequent research is urged to use the aforementioned techniques (HPLC, GC-MS) in order to characterize and quantify the responsible bioactive compounds for the antibacterial activity of Physalis peruviana. In addition, other antioxidant assays (ABTS, FRAP) should be used in future research, in the case where significant results are not found with the DPPH assay, for a wider evaluation of these properties. IJFMR260378736 Volume 8, Issue 3, May-June 2026 35 International Journal for Multidisciplinary Research (IJFMR) E-ISSN: 2582-2160 ● Website: www.ijfmr.com ● Email: [email protected] 2. A suggestion is made to perform further antimicrobial studies, using standardized quantitative assays (MIC, MBC) and test against more relevant micro-organisms to skin infections or related to acne, and isolation and identification of the responsible compounds. 3. Further optimization of topical gel formulation of carbomer. For improving physical stability, skin permeability and controlled delivery. In vivo or clinical studies in humans to establish safety and efficiency of Physalis peruviana topical preparations in acne treatment. 4. Alternative and/or complementary treatment for acne vulgaris using plant-derived topical preparations such as Physalis peruviana gel by physicians, pharmacists and other healthcare professionals in the area of skin treatments REFERENCES 1. Abd-ELmageed, S. M., Abushady, H. M., & Amin, A. A. (2024). Antibacterial and antioxidant activities of Physalis peruviana and Hyphaene thebaica extracts. African Journal of Biological Sciences, 15(1), 73–86. https://doi.org/10.21608/ajbs.2019.63997 2. Abozeid, D., Fawzy, G., Issa, M., Abdeltawab, N., & Soliman, F. (2023). Medicinal plants and their constituents in the treatment of acne vulgaris. Biointerface Research in Applied Chemistry, 13, Article 189. https://doi.org/10.33263/BRIAC132.189 3. Abubakar, A. R., & Haque, M. (2020). Preparation of medicinal plants: Basic extraction and for experimental purposes. Journal of Pharmacy and Bioallied fractionation procedures Sciences, 12(1), 1-10. DOI: 10.4103/jpbs.JPBS_175_19 4. Alexis, A., Tan, J., Rocha, M., Kerob, D., Demessant, A., Ly, F., Wu, Y., Sachdev, M., & Kurokawa, I. (2024). Is acne the same around the world? Journal of Clinical and Aesthetic Dermatology, 17(9), 16–22. https://pmc.ncbi.nlm.nih.gov/articles/PMC11386966/ 5. Aneja, D., Debnath, M., Darbari, P., Rathi, R., Khan, I. U., Komal, ... & Geneva, M. (2025). The Emerging Superfruit: Physalis peruviana's Role in Revolutionizing the Nutraceutical and Food Industries. Current Nutrition Reports, 14(1), 73. https://doi.org/10.1007/s13668-025-00659-8 6. Añibarro-Ortega, M., Dias, M. I., Petrović, J., Mandim, F., Núñez, S., Soković, M., & Pinela, J. (2025). Nutrients, phytochemicals, and in vitro biological activities of goldenberry (Physalis peruviana L.) fruit and calyx. Plants, 14(3), Article 327. https://doi.org/10.3390/plants14030327 7. Anwar, D. A., Eid, H. R., Abdel-Salam, A. F., & El-Chaghaby, G. A. (2022). Phytochemical, antioxidant, and antibacterial activities of golden berry (Physalis peruviana L.) extract and its effects on the storage stability of tomato paste. Arab Universities Journal of Agricultural Sciences, 30(2), 251–258. https://doi.org/10.21608/AJS.2022.124161.1471 8. Asian Journal of Pharmaceutical Research. (2020). Medicinal plants for acne treatment: A review. 144–150.

    Phytochemical Profiling and Antibacterial Activity of Physalis peruviana Fruit Extract in a Carbomer-Based Topical Gel for Acne Vulgaris · 2026 · DOI

  • Dr. Gadhavi Pratixaben Pratapdan* SRF- RARI, Ahmedabad Under CCRAS, Ministry of Ayush. Article Received on 16 April 2026, Article Revised on 06 May 2026, Article Published on 16 May 2026, https://doi.org/10.5281/zenodo.20205300 *Corresponding Author Dr. Gadhavi Pratixaben Pratapdan SRF- RARI, Ahmedabad Under CCRAS, Ministry of Ayush.

    AN INTEGRATIVE SCIENTIFIC EVALUATION OF GREEN GRAM (VIGNA RADIATA L.) CONSUMPTION ON BUDHAVAR (WEDNESDAY) IN GUJARATI TRADITION: AN AYURVEDIC AND NUTRITIONAL PERSPECTIVE · 2026 · DOI

  • The accumulating scientific literature points to the therapeutic promise of Withania apparent huge somnifera in treating inflammation-related conditions. Nonetheless, there are still a few gaps to be filled in to make it easier to translate traditional medicine into the modern clinical practice. www.wjpls.org │ Vol 12, Issue 5, 2026. │ ISO 9001:2015 Certified Journal │ 149 Yadav et al.

    PHARMACOLOGICAL SIGNIFICANCE OF WITHANIA SOMNIFERA IN INFLAMMATION-RELATED DISORDERS · 2026 · DOI

  • Biogenically exhibit significant potential across numerous industries, especially in biomedical applications, owing to their strong antibacterial and antioxidant capabilities. Their effectiveness can be evaluated by techniques such as agar disc diffusion and serial dilution. Nanoparticles can function as economical antibacterial agents, with prospective applications in medical, pharmaceuticals, and extensive industrial manufacturing. Their compatibility with medicinal applications, along with ease of synthesis and environmental sustainability, renders them ideal candidates for the development of new treatments and industrial products. IJDDT, Volume 16 Issue 18s, 2026 Page 23 Tri-Herbal Alchemy: Green Synthesis of Silver Nanoparticles from Amalaki, Bibhitaki, and Haritaki for Antibacterial Applications. and 29. Khan, F., Shukla, R., & Soni, V. (2017). Nanotechnology in medicine: Applications and challenges. Materials Science and Engineering C, 76, 1336-1343. 30. Kumar, B., Verma, S., & Singh, M. (2019). Silver nanoparticles as antimicrobial agents: A review on recent patents. Recent Patents on Nanotechnology, 13(1), 35-45. 31. Patra, J. K., & Baek, K. H. (2014). Green biomedical nanotechnology: Synthesis applications of silver nanoparticles. Advanced Drug Delivery Reviews, 72, 57-70. 32. Sharma, V. K., Yngard, R. A., & Lin, Y. (2019). Silver nanoparticles: Green synthesis and their antimicrobial activities. Advances in Colloid and Interface Science, 145(1), 83- 33. Singh, R. P., Ramarao, P., & Das, M. (2018). Silver nanoparticles in biomedical applications: Progress and challenges. Trends in Biotechnology, 35(3), 246-258. 34. Verma, A., & Mehata, M. S. (2016). Controlling the synthesis of silver nanoparticles with plant extracts. Materials Science and Engineering C, 58, 36-43.

    Tri-Herbal Alchemy: Green Synthesis of Silver Nanoparticles from Amalaki, Bibhitaki, and Haritaki for Antibacterial Applications · 2026 · DOI

  • This integrative review highlights that, despite differences in language and conceptual frameworks, Ayurveda and modern immunology share converging perspectives on inflammation as a systemic and multifactorial process. Ayurvedic concepts such as Pitta, Ama, and Agni provide a functional understanding of inflammatory states, while modern immunology offers molecular specificity through cytokine signaling, oxidative stress pathways, and immune regulation. Bridging these paradigms enables a more comprehensive model of inflammation—one that connects metabolic dysfunction, immune activation, and tissue damage within a unified framework. Importantly, the growing body of evidence supporting the molecular actions of Ayurvedic interventions, including anti-inflammatory, antioxidant, and immunomodulatory effects, reinforces their potential role in integrative healthcare. Looking forward, future research should focus on rigorous clinical validation through well-designed randomized controlled trials, as well as the development of standardized formulations and dosing protocols. Advances in systems biology, metabolomics, and biomarker-driven research may further facilitate the translation of Ayurvedic concepts into measurable biological parameters. Moreover, the integration of artificial intelligence and data-driven approaches holds promise in correlating traditional phenotypic classifications with molecular and clinical profiles, paving the way for truly personalized medicine. In conclusion, an integrative approach to inflammation that combines the systemic insights of Ayurveda with the mechanistic precision of modern immunology has the potential to enhance both preventive and therapeutic strategies. Rather than functioning as parallel systems, these paradigms may be more effectively viewed as complementary frameworks contributing to a more holistic understanding of human health and disease.

    From Pitta to Cytokines: An Integrative Review of Ayurvedic and Modern Mechanisms of Inflammation · 2026 · DOI

  • The HRLCMS profile findings stress the need for long-term exposure studies as prolonged use of identified compounds might result in toxicity, endocrine disturbance, antibiotic resistance, or cancerous effects.

    Phytochemical profiling and heavy metal safety assessment of classical unani formulation Jawarish Shahi using advanced analytical techniques · 2026 · DOI

  • While lead was not detected in initial tests, a complete safety assessment requires quantifying lead, cadmium, and other elements as per modern standards (e.g., WHO, Ayurvedic Pharmacopoeia).

    Phytochemical profiling and heavy metal safety assessment of classical unani formulation Jawarish Shahi using advanced analytical techniques · 2026 · DOI

  • The use of herbal products has been studied in the general population, but few studies have focused on the prevalence of herbal therapy use for treatment of symptoms or disease among female internal medicine patients or on predictors for delaying obtaining conventional care while using herbal therapy.

    Delay in Obtaining Conventional Healthcare by Female Internal Medicine Patients Who Use Herbal Therapies · 2002 · DOI

  • Despite growing clinical use of Panchakarma therapies, research exploring physiological and experimental biochemical changes following Vamana Karma is sparse.

    UNDERSTANDING THE MECHANISM OF VAMANA KARMA THROUGH CLASSICAL PRINCIPLES AND MODERN EMESIS PHYSIOLOGY · 2026 · DOI

  • World Journal of Pharmaceutical Research potential rooted in centuries of traditional use, concerns related to heavy metal toxicity, lack of standardization, inadequate scientific validation, and stringent global regulatory norms impede their international acceptance.

    CHALLENGES AND FUTURE DIRECTIONS IN GLOBALIZATION OF RASASHASTRA BASED HERBO - MINERAL DRUGS · 2026 · DOI

  • Although individual constituents of this group have been investigated for their pharmacological properties, a consolidated evaluation of Ambashtadi Gana as a composite therapeutic formulation is scarce.

    REVISITING AMBASHTADI GANA: A CONCEPTUAL ANALYSIS OF ITS ROLE IN SANDHANA AND VRANA ROPANA · 2026 · DOI

  • Although classical texts describe its wide applications, the modality-based functional differences of Rasayana therapies remain inadequately explored.

    GENERAL CONCEPT OF RASAYANA IN CHARAKA SAMHITA WITH SPECIAL REFERENCE TO KUTIPRAVESHIKA AND VATATAPIKA RASAYANA · 2026 · DOI

  • Future research should focus on: 1. Standardization of Ashwagandha extracts. 2. Identification of active withanolides. 3. Large-scale randomized clinical trials. 4. Development of novel phytopharmaceutical formulations. 5. Evaluation of synergistic combinations with conventional DMARDs.

    Anti-Arthritic Activity of Withania somnifera (Ashwagandha): A Phytopharmacological Review · 2026 · DOI

  • As a result, future research should focus on using this seed as one of the best medicinal properties for managing cancer cells and pathogenic bacteria in humans.

    In Vitro Studies of Phytochemicals, Antimicrobial and Antioxidant Action of Terminalia chebula in the Induction of Apoptosis Against Breast Cancer Cell Lines · 2026 · DOI

  • treatments discussed may be limited by their A healthy system is also indicated by age or difficulty in relation to contemporary outward manifestations such as silky hair conditions.

    BHELA SAMHITA: A COMPREHENSIVE LITERARY REVIEW WITH FOCUS ON SWASTHAVRITTA ASPECTS · 2026 · DOI

  • The study emphasizes the great value of strict quality control, purification, and regulatory monitoring of traditional concoctions in separating actual phytoconstituents from artificial pollutants or contaminants.

    Phytochemical profiling and heavy metal safety assessment of classical unani formulation Jawarish Shahi using advanced analytical techniques · 2026 · DOI

  • The detection of potentially harmful synthetic chemicals (hydrazine derivatives, 1,4-dioxin derivatives, and nitrosamine-containing chemicals) at very low levels raises concerns about possible toxicity, mutagenicity, or carcinogenicity that require critical evaluation and purification.

    Phytochemical profiling and heavy metal safety assessment of classical unani formulation Jawarish Shahi using advanced analytical techniques · 2026 · DOI

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