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Phytochemical Profiling and Standardization of Punarnavastak Kwath Ghanvati Using Physicochemical Parameters and HPTLC

1★, 1, 1, 1★ Corresponding author

  1. 1Department of Shalya Tantra, Parul Institute of Ayurved, Parul University, Limda, Waghodiya, Vadodara, Gujarat, INDIA.

CORRESPONDENCE

Dixit Donga

Department of Shalya Tantra, Parul Institute of Ayurved, Parul University, Limda, Waghodiya, Vadodara, Gujarat, INDIA.

dongadixit@gmail.com

Received: 25-07-2025; Revised: 12-09-2025; Accepted: 05-11-2025.

Volume 18, Issue 1 · pp. 110-116 · 2025 · DOI: 10.5530/pres.20260057

ABSTRACT

Background: Punarnavastak Kwath, a classical Ayurvedic decoction described in the Bhaishajya Ratnavali, is renowned for its efficacy in managing Udara Roga (abdominal disorders) and Shotha Roga (oedema). To enhance patient compliance, this formulation is transformed into a concentrated tablet known as Punarnavastak Kwath Ghanvati (PAKG), prepared without any excipients. Despite extensive traditional use, scientific validation of PAKG through contemporary analytical techniques remains necessary to ensure consistent therapeutic effectiveness and quality control.Purpose: The present study aimed to conduct a comprehensive evaluation of PAKG through organoleptic examination, physico-chemical analysis, phytochemical screening, and High-Performance Thin-Layer Chromatography (HPTLC).Materials and Methods: The formulation was prepared as per the guidelines stipulated in the Indian Pharmacopoeia. Organoleptic characteristics (colour, taste, odour), along with moisture content, total ash, acid-insoluble ash, water-soluble ash, and extractive values (aqueous and alcoholic), were systematically assessed. Preliminary phytochemical screening was conducted to detect major bioactive groups such as alkaloids, flavonoids, tannins, saponins, and glycosides. Furthermore, HPTLC profiling was performed to identify and quantify specific phytochemical constituents, documenting characteristic retention factor (Rf) values essential for establishing reproducible quality standards.Results: The analysis revealed consistent physico-chemical parameters indicative of formulation stability and quality. Phytochemical screening confirmed the presence of active constituents, reinforcing traditional claims. HPTLC analysis provided reproducible fingerprints, enabling precise standardization of PAKG.Conclusion: This integrative scientific evaluation effectively bridges traditional Ayurvedic knowledge and contemporary analytical validation, ensuring therapeutic consistency, enhancing credibility, and facilitating wider acceptance of Punarnavastak Kwath Ghanvati in modern healthcare practice.

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INTRODUCTION

Punarnavastak Kwath is a classical Ayurvedic polyherbal formulation documented in the Bhaishajya Ratnavali, traditionally prescribed for conditions such as sarvanga sotha (generalized edema), udara roga (abdominal disorders), kasa (cough), svasa (dyspnoea), and pandu (anaemia).[1] Rooted in the principles of Ayurvedic formulation exemplifies the holistic approach of combining multiple herbs to enhance therapeutic efficacy through synergistic action.[2] Despite its longstanding traditional use, there is a paucity of comprehensive scientific studies validating the safety, efficacy, and quality control parameters of Punarnavastak Kwath Ghanvati. Preliminary phytochemical analyses have identified constituents such as alkaloids, tannins, flavonoids, and saponins, which are believed to contribute to its therapeutic effects. Furthermore, studies have demonstrated its hepatoprotective and antioxidant activities,[3] supporting some of its traditional claims. However, the complexity of herbal formulations necessitates rigorous analytical evaluation to ensure consistency and reproducibility. Modern analytical techniques, including organoleptic assessment, physicochemical analysis (such as moisture content, ash values, and extractive values), phytochemical screening, and High-Performance Thin-Layer Chromatography (HPTLC),[4] are essential tools in the standardization process. For instance, HPTLC fingerprinting has been effectively employed to assess the phytoconstituents of similar Ayurvedic formulations, aiding in their authentication and quality control.

Aims and Objectives

This study aims to conduct a comprehensive analytical evaluation of Punarnavastak Kwath Ghanvati using modern scientific methodologies to substantiate its traditional claims and establish quality standards. The specific objectives are:

  • To authenticate the formulation through organoleptic and qualitative phytochemical assessments.
  • To determine physicochemical parameters, including moisture content, ash values, and extractive values, to ensure batch-to-batch consistency.
  • To perform HPTLC profiling for the identification and quantification of key phytoconstituents, facilitating the development of a standardized fingerprint for quality assurance.

By achieving these objectives, the study seeks to bridge the gap between traditional Ayurvedic knowledge and contemporary scientific validation, thereby enhancing the credibility and acceptance of Punarnavastak Kwath Ghanvati in modern healthcare.

MATERIALS AND METHODS

Drug review

Stepwise Detailed Method for the Preparation of Punarnavastak kwath ghanvati

Collection and Authentication of Raw Drugs

Selection of Ingredients: Each herbal ingredient (1 kg) was selected based on classical Ayurvedic texts Sharngdhara samhita (Table 1).

Authentication: All raw materials were authenticated as per the Ayurvedic Pharmacopoeia of India, ensuring correct identity, quality, and absence of contaminants.

Cleaning and Processing of Raw Drugs

Cleaning: All raw herbs were thoroughly washed with clean water to remove dust and impurities, then shade-dried for 2-3 days to preserve active constituents.

Cutting and Crushing: The dried materials were chopped into small pieces and coarsely crushed to facilitate decoction preparation.

Preparation of Punarnavastak Kwath (Decoction)

Measurement: A total of 8 kg of raw drugs (1 kg each) was taken, and 128 L (16 parts) of water was added.[5]

Decoction Process: The mixture was boiled on a mild flame (Mridvagni) until the volume was reduced to 32 L (one-fourth of original volume), with intermittent stirring.

Filtration: The decoction was filtered through a clean muslin cloth to remove solid residues, yielding Punarnavastak Kwath.

Preparation of Ghanvati (Tablet)

  • Ghana Preparation: The decoction (32 L) was further heated over a mild flame with continuous stirring until it reached a thick, semisolid consistency, yielding approximately 3.5 kg of Ghana (solid extract).[6]
  • Drying Process: The Ghana was dried in a hot air oven to eliminate residual moisture.
  • Tablet Formation: The dried extract was mixed with Acacia gum as a binder, and 500 mg tablets were prepared using a tablet punching machine. Tablets were then packed for therapeutic use.

Storage

  • Container Selection: Tablets were stored in sterilized, airtight plastic containers.
  • Labelling: Containers were labelled with the formulation name (Punarnavastak Kwath Ghanvati), batch number, date of manufacture, and storage instructions.
  • Storage Conditions: The containers were kept in a cool, dry place, protected from sunlight and moisture.

Quality Control and Testing

  • Organoleptic Characteristics.
    • ➢ Colour: Brown,
    • ➢ Odour: Bitter,
    • ➢ Consistency: Hard,
    • ➢ Taste: Bitter.
    • Physico-Chemical Parameters (Table 2).
    • Phytochemical screening (Table 3).
    • Phytochemical Analysis: HPTLC was carried out to identify and confirm the presence of key phytoconstituents, ensuring quality, consistency, and compliance with pharmacopeial standards.

    High performance thin layer chromatography

    HPTLC Fingerprint Analysis Procedure for Methanol Extract of Punarnavashtaka Kwath Ghanavati. The High-Performance Thin-Layer Chromatography (HPTLC) fingerprinting for the methanolic extract of Punarnavashtaka Kwath Ghanavati was performed as follows:

    Sample Preparation

    5 g of the sample was accurately weighed into a beaker, and 100 mL of methanol was added. The mixture was sonicated for 16 hr, after which the extract was filtered through standard filter paper, followed by filtration through a 0.45 μm membrane filter to obtain a clear solution.

    Chromatography Setup

    The filtered test solution was used for HPTLC analysis. Aliquots were applied as 15 mm wide bands on 10 × 10 cm TLC plates pre-coated with a 0.2 mm layer of silica gel F254 (Merck), using a Linomat 5 sample applicator (CAMAG, Switzerland).

    Chromatogram Development

    The plates were developed in a CAMAG chamber pre-saturated with vapours of the mobile phase consisting of Toluene: Ethyl acetate: Formic acid in the ratio 6:3:0.5 (v/v/v). The solvent front was run to a distance of 8.0 cm.

    Detection and Documentation

    Post-development, the plates were air-dried and then scanned at 254 nm and 366 nm using a CAMAG TLC scanner 3 equipped with winCATS 4 software. This facilitated the detection and documentation of the HPTLC fingerprint for the methanol extract of the formulation.

    Figures 1 and 2 shows the HPTLC Chromatograms of Punarnavashtaka Kwath Ghanavati at UV 254 nm and UV 366 nm respectively using Toluene: Ethyl acetate: Formic acid (6:3:0.5 v/v/v) and gives the Rf values of the same.

    Table 1: Ingredients of Punarnavastak Kwath Ghanvati with Their Botanical Identity.
    Sl. No.Name of the sampleBotanical NameFamilyUseful Part
    1PunarnavaBoerhavia diffusaNyctaginaceaeRoot (Mool)
    2.SunthiZingiber officinalisZingiberaceaeRhizome (Kanda)
    3.HaritakiTerminalia chebulaCombretaceaeFruit (Phala)
    4.GuduchiTinospora cordifoliaMenispermaceaeStem (Kanda)
    5.NimbaAzadirachta indicaMeliaceaeBark (Tvaka)
    6.PatolTricosanthes dioicaCucurbitaceaeLeaf (Patra)
    7.KatukiPicrohiza kurroaScrophulariaceaeRoot (Mool)
    8.DaruharidraBerberis aristateBerberidaceaeRhizome (Kanda)
    Table 2: Physico-chemical and Pharmacopoeial Parameters of Punarnavastak Kwath Ghanvati.
    Sl. No.ParametreValue
    1.Loss on Drying at 110 c(%w/w)8.35%
    2.Total Ash Value (%w/w)14.22%
    3.pH Value6.8
    4.Tablet Weight Variation430 mg
    5.Tablet Highest Weight442 mg
    6.Tablet Lowest Weight408 mg
    7Tablet Highest Weight Value2.79%
    8Tablet Lowest Weight Value5.11%
    9Tablet Friability0
    10Tablet Hardness3.83 kg/cm2
    11Tablet Disintegration Start Time10 sec
    12Tablet Disintegration End Time8.05 min
    13Alcohol Soluble Extract18.4%
    14Water Soluble Extract14.3%
    Table 3: Key Phytoconstituents and Pharmacological Activities of Individual Ingredients of Punarnavashtaka Kwath Ghanavati.
    Sl. No.Drug NameKey PhytoconstituentsPharmacological Activities
    1Punarnava.[7]Punarnavine, Punarnavoside, Boeravinone, Lignans, Flavonoids, Phenolics.Diuretic, Anti-inflammatory, Hepatoprotective, Antioxidant, Immunomodulatory, Antiallergic.
    2Sunthi (Ginger).[8]6-Gingerol, 6-Shogaol, Zingerone, Gingerdiol, Paradol, Ginger oleoresin.Antioxidant, Anti-inflammatory, Anti-emetic, Antimicrobial, Digestive aid.
    3Haritaki.[9]Chebulic acid, Chebulagic acid, Chebulinic acid, Gallic acid, Tannins.Antioxidant, Antidiabetic, Antimicrobial, Anti-inflammatory, Hepatoprotective, Neuroprotective.
    4Guduchi.[10]Berberine, Jatrorrhizine, Tinosporide, Cordifolioside A, β-Sitosterol.Immunomodulatory, Antioxidant, Antidiabetic, Hepatoprotective, Antimicrobial, Anti-inflammatory, Anticancer.
    5Nimba (Neem).[11]Azadirachtin, Nimbin, Nimbidin, Nimbolide, Quercetin, β-Sitosterol.Antimicrobial, Anti-inflammatory, Hepatoprotective, Antioxidant, Anticancer.
    6Patol.[12]Tannins, Saponins, Alkaloids, Proteins, Triterpenes, Vitamin A.Hepatoprotective, Antioxidant, Anti-inflammatory, Antidiabetic.
    7Katuki.[13]Picroside I & II, Kutkoside, Apocynin.Hepatoprotective, Antioxidant, Immunomodulatory, Anti-inflammatory, Antidiabetic.
    8Daruharidra.[14]Berberine, Palmatine, Oxyacanthine, Aromoline.Antimicrobial, Hepatoprotective, Antidiabetic, Anti-inflammatory, Antioxidant, Anticancer.
    Figure
    Figure 1: HPTLC Chromatogram of Punarnavashtak Ghanavati at UV 254 nm (A=Fingerprint, B= Peak height, C= Rf value and area percentage).
    Figure 2: HPTLC Chromatogram of Punarnavashtak Ghanavati at UV 366 nm (A=Fingerprint, B= Peak height, C= Rf value and area percentage).

    RESULTS

    The HPTLC analysis revealed distinct spots, each corresponding to specific phytoconstituents present in the Punarnavastak Kwath. The identified Rf values and the likely phytoconstituents associated with each are summarized below (Table 4).

    Table 4: Phytoconstituents Identified via HPTLC (Based on Rf values) and Their Plant Sources.
    Rf ValuePhytoconstituent(s)Plant Source(s)
    0.16Boeravinone (flavonoid),[15] Gallic acid, PhenolicsBoerhavia diffusa (Punarnava),[16,17] Terminalia chebula (Haritaki).[17]
    0.326-Gingerol,[18] Magnoflorine,[19] phenolic alkaloidZingiber officinale (Sunthi),[20] Tinospora cordifolia (Guduchi),[21] Trichosanthes dioica (Patol)
    0.31Berberine,[22] PunarnavosideBerberis aristata (Daruharidra), Boerhavia diffusa (Punarnava).[23]
    0.43Gallic acid.[24]Terminalia chebula (Haritaki)
    0.50p-Coumaric acidAzadirachta indica (Nimba), Zingiber officinale (Sunthi),[25-28]
    0.61Tinosporaside, Picroside I/II.[29]Tinospora cordifolia (Guduchi),[30-32] Picrorhiza kurroa (Katuki)
    0.81Quercetin (flavonoid aglycone).[33]Azadirachta indica (Nimba),[34,35] Terminalia chebula (Haritaki).[36]

    DISCUSSION

    The present study provides a comprehensive evaluation of Punarnavastak Kwath Ghanvati (PAKG) through organoleptic, physicochemical, and phytochemical analyses, along with advanced chromatographic profiling using High-Performance Thin Layer Chromatography (HPTLC). These findings contribute valuable data to the scientific understanding and standardization of this classical Ayurvedic formulation. The organoleptic and physicochemical parameters of PAKG, including colour, taste, texture, pH, and extractive values, were consistent with Ayurvedic Pharmacopeial standards, suggesting good quality and acceptable formulation characteristics. These parameters play a vital role in identifying the authenticity and stability of herbal products, which is essential for patient safety and efficacy.

    Phytochemical screening revealed the presence of important bioactive constituents such as alkaloids, flavonoids, saponins, glycosides, tannins, and phenolic compounds, which are known for their diverse pharmacological activities. These phytochemicals are likely responsible for the traditional therapeutic effects of PAKG, including its anti-inflammatory, diuretic, hepatoprotective, and antioxidant properties. The HPTLC fingerprinting showed distinct peaks corresponding to various phytochemical constituents, confirming the polyherbal nature and chemical complexity of the formulation. HPTLC proved to be an effective tool in detecting and documenting the marker compounds in PAKG, ensuring reproducibility and providing a scientific basis for its standardization.

    Notably, major ingredients such as Punarnava and katuki have been extensively studied for their hepatoprotective, nephroprotective and anti-inflammatory properties, supporting their inclusion in this formulation. The observed phytochemical profile correlates well with the known traditional uses of these herbs, affirming the therapeutic rationale behind PAKG's formulation. The study also highlights the importance of integrating modern analytical techniques with traditional Ayurvedic knowledge to establish quality benchmarks and promote global acceptance of herbal medicines. Standardization through HPTLC not only enhances the scientific credibility of PAKG but also lays the foundation for its future clinical validation.

    CONCLUSION

    This study highlights the therapeutic potential and quality assurance of Punarnavastak Kwath Ghanvati through comprehensive organoleptic, physicochemical, phytochemical, and HPTLC analyses. The identification of key bioactive compounds and a distinctive chromatographic fingerprint support its traditional Ayurvedic use and emphasizes the necessity of standardization in herbal formulations. These findings contribute significantly to ensuring the safety, efficacy, and consistency of Ayurvedic medicines. Future research should aim to explore its molecular mechanisms and validate its clinical efficacy through well-designed clinical trials. Overall, this study reinforces the value of integrating traditional knowledge with modern scientific approaches to broaden the therapeutic applications of classical formulations.

Acknowledgement

The authors gratefully acknowledge the Parul Institute of Ayurveda and the CR4D Department of Parul University for their valuable guidance and support in this work.

Funding

No and refined the content, taking full responsibility for the final publication.

Conflict of Interest

The authors declare that there is no conflict of interest.

Author Contributions

Both authors contributed to the concept and design of the study, acquisition of data, and analysis and interpretation of data. Dr. Dixit Donga took primary responsibility for drafting the manuscript and revising it critically for important intellectual content. Finally, both authors reviewed and approved the final version of the manuscript to be published and agree to be accountable for all aspects of the work.

Data Availability

All data collected, including recordings of measurements, are properly stored physically or electronically as appropriate. They are stored without personal identifiers with the corresponding author who can make them available under appropriate circumstances

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Donga, D., Toshikhane, H., Daga, H., & Gohil, D. (2025). Phytochemical Profiling and Standardization of Punarnavastak Kwath Ghanvati Using Physicochemical Parameters and HPTLC. Pharmacognosy Research, 18(1), 110-116. https://doi.org/10.5530/pres.20260057

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