Department of Pharmacology, Adhiparasakthi College of Pharmacy (Affiliated to The Tamil Nadu Dr. M. G. R. Medical University, Chennai), Melmaruvathur- 603319, Tamil Nadu, India.
The study investigates the phytochemical composition of Hygrophila polysperma leaf extract using polarity-based solvents, aiming to identify bioactive compounds with potential medicinal properties. The leaves of Hygrophila polysperma were extracted using solvents of varying polarities) low to high) such as Petroleum ether (low polarity), Chloroform, Ethyl acetate, Ethanol and water (high polarity). Phytochemical screening exposed the existence of several bioactive composites, such as alkaloids, flavonoids, saponins, phenols, tannins, glycosides, and terpenoids, with varying concentrations depending on the solvent used. The ethanol extract exhibited the highest diversity of phytochemicals, particularly phenolic compounds, tannins, alkaloids, carbohydrates, terpenoids and flavonoids, known for their antioxidant property. The chloroform extract showed a moderate presence of alkaloids and some quantity of glycosides. The results confirm that Hygrophila polysperma contains a range of bioactive compounds to treat various ailments, including in the treatment of infertility. Further studies, including isolation and characterization of individual bioactive compounds, are recommended to explore their pharmacological potential. As part of preliminary analysis of raw extracts or fractions from various sources, online isolation and discovery of natural substances, and chemical taxonomic studies.
Remedial plants have played a significant part in human healthcare for centuries, serving as the basis for both outdated remedies and modern pharmaceuticals. Their integration into preventive disease control strategies is particularly compelling, as it underscores the potential for natural solutions in public health (1). The species, native to Asia, was announced to the United States as an aquarium plant in 1945. East Indian hygrophila (Hygrophila polysperma) is an amphibious plant that occurs under submersed conditions and as a terrestrial plant in littoral and water-adjacent zones. It was first found out of cultivation in Florida in the 1960s. East Indian hygrophila reproduces by both asexual (vegetative) and sexual (seed) means, although the ecological significance of seeds is unclear. East Indian hygrophila, also known as Hygrophila polysperma, is indeed a fascinating yet problematic species. While it is highly valued in the aquarium trade for its aesthetic appeal, its invasive tendencies have caused significant ecological concerns. This plant can outcompete native species, disrupt aquatic ecosystems, and even interfere with water flow and irrigation systems (2).
Taxonomy:(3)
Synonym: Justicia polysperma, Hemiadelphis polysperma, Adenosma polysperma
Domain: Eukaryota
Kingdom: Plantae
Phylum: Spermatophyta
Subphylum: Angiospermae
Class: Dicotyledonae
Order: Scrophulariales
Family: Acanthaceae
Genus: Hygrophila
Species: Hygrophila polysperma
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<img alt="Hygrophila polysperma.jpg" height="150" src="https://www.ijpsjournal.com/uploads/createUrl/createUrl-20250510193458-3.jpg" width="150">
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Figure No:1 Hygrophila polysperma
MATERIALS AND METHODS:
Chemicals:
In this study, all the chemicals purchased from Naresh Scientific Company, Puducherry- 605010. The chemicals used were analytical grade.
Collection and identification of plant material:
"Simply pinching off a segment of dwarf Hyrophila and planting it in the substrate is how it is propagated in the home aquarium. Even a fully formed single leaf can be used to grow a new plant, and almost no piece of the plant is too small to create a brand-new dwarf hygro plant." A fully grow submerged plant of Hygrophila polysperma stem was buying in Premium plants, Chennai. Each stem was cut into two small pieces and planting in a pot. The plant was authenticated by Dr. M. Syed Ali Fathima, Assistant Professor and Head, Sadakathullah Appa Arts and Science College, Tirunelveli.
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Extraction of plant material:
The collected leaves were dried at room temperature and powdered the plant material and extracted with Soxhlet apparatus various solvents based on polarity. The solvents used such as petroleum ether, chloroform, Ethyl acetate, Ethanol and water. Finally, it is concentrated by vacuum evaporator.
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<img alt="Extraction of plant material.png" height="150" src="https://www.ijpsjournal.com/uploads/createUrl/createUrl-20250510193458-1.png" width="150">
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Figure No:04 Extraction of plant material
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<img alt="Final product of various solvents.png" height="150" src="https://www.ijpsjournal.com/uploads/createUrl/createUrl-20250510193458-0.png" width="150">
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Figure No:5 Final product of various solvents (Pet. Ether, Chloroform, Ethyl acetate, Ethanol and water respectively)
Preliminary phytochemical analysis:(4-36)
The extracts were treated with the specific reagents to find out the presence of various phytoconstituents. (Junaid R Shaikh and Matsyagandha Krishnarao Patil., 2020).
Table No:1 Preliminary Phytochemical Analysis
Phytoconstituent |
Test |
Procedure |
Observation |
Alkaloids |
Dragendroff’s test |
Extract + Dragendroff’s reagent
|
A precipitate of red colour. |
|
Hager’s test |
Extract + Hager’s reagent
|
White colour |
|
Mayer’s test |
Extract + Mayer’s reagent
|
A creamy white/yellow precipitate |
|
Wagner’s test |
Extract + Wagner’s reagent
|
A brown/reddish precipitate |
|
Picric acid test |
Extract + 2% picric acid solution
|
An orange-coloured precipitate |
|
Iodine Test |
Extract + iodine solution
|
Formation of blue colour
|
|
Bouchardat’s test |
Extract + Bouchardat’s reagent
|
Formation of brick red colour. |
|
Tannic acid test |
Extract +10% tannic acid solution |
A buff colour precipitate |
Carbohydrates |
Barfoed’s test |
Extract is heated with Barfoed’s reagent |
Form red precipitate to confirm the monosaccharides.
|
|
Molish’s test |
Extract + Molish’s reagent and con. Sulphuric acid along the side of the test tube |
Voilet ring appears |
|
Seliwanoff’s test |
Extract is heated with seliwanoff’s reagent |
Appearance of rose red colour for the confirmation of ketoses. |
|
Resorcinol test |
Heat the Extract+ Resorcinol + Con.HCl |
A rose red colour |
|
Test for Pentoses |
Heated in amixture of Extract + Con. HCl + Phloroglucinol |
A red colour |
|
Test for starch |
Extract + 5% KOH solution |
A cinary colouration |
Reducing sugars |
Benedict’s test |
Extract + Benedict’s reagent and heated |
Green/ Yellow/ Red colour |
|
Fehling’s test |
Extract + Fehling’s solution A and B and heated |
A red precipitate |
|
Borntrager’s test |
Extract + Chloroform and 10% ammonia solution |
A pink colour solution |
|
Modified Borntrager’s test |
Extract+ Ferric chloride and boil for few minutes + Benzene + Ammonia |
Blood red coloured solution |
|
Legal’s test |
Extract + pyridine + Sodium nitroprusside + 10% Sodium hydroxide |
A pink coloured solution |
|
10% NaOH test |
Extract + dil. H2SO4 boiled for 15min and neutralize with 10% NaOH + Fehling’s solution A & B |
A brick red precipitate |
|
Aqueous NaOH test |
Extract + aqueous NaOH solution |
A yellow colour |
|
Concentrated H2SO4 test |
Extract + glacial acetic acid + a drop of 5% FeCL3 + conc. H2SO4 |
A brown ring |
|
Raymond’s test |
Extract + dinitrobenzene in hot methanolic alkali |
A violet colour |
Cardiac glycosides |
Keller-Killani test |
Extract + glacial acetic acid + 5% ferric chloride + conc. H2SO4 |
A blue coloured solution |
|
Kedee’s test |
Extract + methanol + alcoholic KOH + 1% alcoholic 3,5 dinitrobenzene and heated |
A disappearing violet colour |
|
Test for Cardenolides |
Extract + pyridine + Sodium nitroprusside + 20% NaOH |
A red colour, fades to brownish yellow |
|
Bromine water test |
Extract + bromine water |
A yellow precipitate |
|
Baljet test |
Extract + Baljet’s reagent |
A yellow-orange colour |
Proteins and Amino acids |
Biuret test |
Extract + 2% copper sulphate + 95% ethanol + KOH pellets |
A pink coloured solution |
|
Millon’s test |
Extract + few drops of Millon’s reagent |
A white precipitate |
|
Ninhydrin test |
Extract + Ninhydrin solution |
A purple-coloured solution {Amino acids} |
|
Xanthoprotein test |
Extract + Few drops of conc. Nitric acid |
A yellow -coloured solution (Aromatic amino acids) |
Flavonoids |
Alkaline reagent test |
Extract + 2% NaOH solution |
An intense yellow colour |
|
Ammonium hydroxide test |
Extract + 10% ammonium hydroxide solution |
A yellow fluorescence |
|
Lead acetate test |
Extract + 10% lead acetate solution |
A yellow precipitate |
|
Shinoda’s test |
Extract + 5mL alcohol + Fragments of magnesium ribbon + few drops of conc. HCl |
A pink to crimson coloured solution |
|
Shibata’s reaction |
Extract + 50% methanol by heating + metal magnesium + 5-6 drops of conc. HCl |
A red colour {flavonols}, orange colour {flavones} |
|
Ferric chloride test |
Extract + 10% ferric chloride solution |
A green precipitate |
|
Pew’s test |
Extract + 0.1gm metallic zinc + conc. H2SO4 |
A red colour {flavonols} |
|
Zinc-hydrochloride reduction test |
Extract + pinch of zinc dust + conc. HCl along the side of test tube |
Magenta colour appears |
|
Ammonia test |
Filtrate + dil. Ammonia solution + conc. H2SO4 |
A yellow colour |
|
Conc. H2SO4 test |
Extract + conc. H2SO4 |
An orange colour |
Phenolic compounds |
Iodine test |
Extract + few drops of dil. Iodine solution |
A transient red colour |
|
Ferric chloride test |
Extract + few drops 5% ferric chloride |
Dark green/bluish black colour |
|
Gelatin test |
Extract + 1% gelatin solution + 10% NaCl |
A white precipitate |
|
Lead acetate test |
Extract + 10% lead acetate solution |
A white precipitate |
|
Ellagic Acid Test |
Extract + 5% glacial acetic acid + 5% sodium nitrite solution |
Solution turns muddy / Niger brown precipitate |
|
Potassium dichromate test |
Extract + few drops of potassium dichromate solution |
A dark colour |
|
Hot water test |
Warm water in beaker + mature plant part is dipped + warmed for a min. |
Black or brown colour ring at the junction of dipping |
|
Test for Cartenoids |
Extract + chloroform, (vigorously shaken and filtered). Filtrate + conc. H2SO4 |
A blue colour at the interface |
Tannins |
Gelatin test |
Extract +1% gelatin solution + 10% NaCl |
A white precipitate |
|
Braymer’s test |
Extract+ distilled water + 10% Ferric chloride solution |
Blue-green colour |
|
10% NaOH test |
Extract + 10% NaOH + shaken well |
Formation of emulsion {Hydrolysable tannins} |
|
Bromine water test |
bromine water + plant extract |
Decoloration of bromine |
|
Lead sub acetate test |
Extract + lead sub acetate solution |
A creamy gelatinous precipitate |
|
Phenazone test |
Extract + sodium acid phosphate, heated, allowed to cool + filtered); filtrate + 2% solution of phenazone |
Precipitation formation |
|
Mitchell’s test |
Extract solution + iron + sodium tartarate (+ ammonium acetate solution) |
A water-soluble iron-tannin complex, which is insoluble in solution of ammonium acetate |
Phlobatannins |
HCl test |
Extract + 1% HCl (boiled) |
A red precipitate |
Saponins |
Foam test |
Plant extract + 2mL water (vigorously shaken) |
Persistent foam |
|
NaHCO3 test |
Plant extract + sodium bicarbonate solution + distilled water (vigorously shaken) |
Stable honeycomb like froth |
|
Olive oil test |
Extract + distilled water; shaken vigorously + few drops of olive oil + shaken vigorously |
Appearance of foam |
|
Haemolysis test |
Drop of fresh blood on glass slide + plant extract |
Zone of hemolysis |
Phytosterols |
Salkowski’s test |
Extract + few drops of conc. H2SO4 (Shaken well and allowed to stand) |
Red colour (in lower layer) |
|
Libermann-Burchard’s test |
Extract + acetic anhydride + 1-2 drops of conc. H2SO4 (along the side of test tube) |
An array of colour change |
|
Acetic anhydride test |
Plant extract + acetic anhydride + conc. H2SO4 |
Change in colour from violet to blue/green |
|
Hesse's response |
Extract + chloroform + conc. H2SO4 |
Pink ring / Red colour (in lower chloroform layer) |
|
Sulphur test |
Extract solution + pinch of sulphur powder |
Sulphur sinks to the bottom |
Cholesterol |
|
Extract + chloroform + acetic anhydride + conc. H2SO4 |
A red-rose colour |
Terpinoides |
|
Chloroform + plant extract + conc. H2SO4 (boiled on water bath) |
A grey coloured solution |
Triterpinoides |
Salkowski’s test |
Extract+ conc. H2SO4 (Shaken well and allowed to stand) |
Golden yellow layer (at the bottom) |
Diterpenes |
Copper acetate test |
Plant extract + copper acetate solution |
Emerald green colour |
Lignins |
Labat test |
Extract solution + gallic acid |
An olive -green colour |
|
Furfuraldehyde test |
Extract solution + 2% furfuraldehyde solution |
A red colour |
Carotenoids |
Carr-Price reaction |
Extract + saturated solution of antimony trichloride in chloroform |
A blue-green colour eventually changing to red |
Quinones |
Alcoholic KOH test |
Plant extract + alcoholic potassium hydroxide |
Red to blue colour |
|
Conc. HCl test |
Plant extract + conc. HCl |
A green colour |
|
Sulphuric acid test |
Extract + isopropyl alcohol + a drop of conc. H2SO4 |
A red colour |
Anthraquinones |
Borntrager’s test |
10% ammonia solution + plant extract (shaken vigorously for 30 sec.) |
A pink, violet, or red coloured solution |
|
Ammonium hydroxide test |
Extract + isopropyl alcohol + conc. ammonium hydroxide solution |
Formation of red colour after 2 min. |
Anthocyanins |
HCl test |
Extract +2N HCl |
Pink-red sol. which turns blue-violet after addition of ammonia |
Leuconthocyanins |
Isoamyl alcohol test |
Extract + isoamyl alcohol |
Upper layer appears red |
Carboxylic acid |
Effervescence test |
Extract + sodium bicarbonate solution |
Appearance of Effervescence |
Coumarins |
NaOH paper test |
Moistened extract is taken in test tube, mouth of test tube is covered with 1N NaOH treated filter paper, heated for few min. in water bath |
Yellow fluorescence from paper under the UV light |
|
NaOH test |
Plant extract + 10% NaOH + Chloroform |
A yellow colour |
Emodins |
|
Plant extract + NH4OH + benzene |
A red colour |
Gums and Mucilages |
Alcohol test |
Extract + distilled water + absolute alcohol (constant stirring) |
White or cloudy precipitate |
Resins |
Acetic anhydride test |
Extract + Acetic anhydride solution + conc H2SO4 |
Orange to yellow |
|
Turbidity test |
Extract dissolved in acetone, poured in distilled water |
Turbidity |
Fixed Oils and Fat |
Spot test/ Stain test |
Little quantity of plant extract is pressed in between to filter papers |
Oil stain on the paper |
|
Saponification test |
Extract + few drops of 0.5N alcoholic KOH + A drop of phenolphthalein (Heated for 2hr.) |
Soap formation or partial neutralization of alkali |
Volatile Oils |
Fluorescence test |
Extract, filtered till saturation, exposed to UV light |
Bright pinkish fluorescence |
RESULTS:
Table No:2 Results of The Phytochemical Analysis
Phytoconstituent |
Test |
Extract |
||||
Pet. Ether |
Chloroform |
Ethyl acetate |
Ethanol |
Water |
||
Alkaloids |
Dragendroff’s test |
+ |
+ |
+ |
+ |
+ |
|
Hager’s test |
+ |
+ |
+ |
+ |
+ |
|
Mayer’s test |
+ |
+ |
+ |
+ |
+ |
|
Wagner’s test |
+ |
+ |
+ |
+ |
+ |
|
Picric acid test |
+ |
+ |
+ |
+ |
+ |
|
Iodine Test |
+ |
+ |
+ |
+ |
+ |
|
Bouchardat’s test |
- |
+ |
- |
+ |
- |
|
Tannic acid test |
- |
- |
- |
+ |
- |
Carbohydrates |
Barfoed’s test |
+ |
- |
+ |
+ |
+ |
|
Molish’s test |
+ |
- |
+ |
+ |
+ |
|
Seliwanoff’s Test |
+ |
- |
+ |
+ |
+ |
|
Resorcinol test |
+ |
- |
+ |
+ |
+ |
|
Test for pentoses |
- |
- |
- |
+ |
- |
|
Test for starch |
+ |
- |
+ |
+ |
- |
Reducing sugars |
Benedict’s test |
+ |
- |
- |
- |
- |
|
Fehling’s test |
+ |
- |
- |
- |
- |
Glycosides |
Borntrager’s test |
- |
- |
- |
- |
+ |
|
Modified Borntrager’s test |
- |
- |
- |
- |
+ |
|
Legal’s test |
- |
+ |
+ |
- |
+ |
|
10% NaOH test |
+ |
+ |
- |
- |
+ |
|
Aqueous NaOH test |
- |
- |
- |
- |
+ |
|
Con. H2SO4 test |
- |
- |
- |
- |
+ |
|
Raymond’s test |
- |
- |
- |
- |
- |
Cardiac Glycosides |
Keller-Killani test |
+ |
+ |
+ |
- |
+ |
|
Kedee’s test |
+ |
- |
- |
- |
+ |
|
Test for Cardenolides |
+ |
- |
+ |
- |
+ |
|
Bromine water test |
+ |
- |
+ |
+ |
+ |
|
Baljet test |
+ |
- |
- |
- |
+ |
Proteins and Amino acids |
Biuret test |
- |
- |
- |
+ |
- |
|
Millon’s test |
- |
- |
- |
+ |
- |
|
Ninhydrin test |
- |
- |
- |
+ |
- |
|
Xanthoproteic test |
- |
- |
- |
+ |
- |
Flavonoids |
Alkaline reagent test |
- |
- |
- |
+ |
+ |
|
Lead acetate test |
- |
- |
- |
+ |
+ |
|
Shinoda’s test |
- |
- |
- |
+ |
+ |
|
Shibata’s reaction |
- |
- |
- |
- |
+ |
|
Ferric chloride test |
+ |
- |
- |
+ |
- |
|
Pew’s test |
- |
- |
- |
+ |
+ |
|
Zinc-hydrochloride reduction test |
- |
- |
- |
- |
- |
|
Ammonia test |
- |
- |
+ |
+ |
+ |
|
Conc. H2SO4 test |
- |
- |
- |
+ |
- |
Phenolic compounds |
Iodine test |
- |
- |
- |
+ |
- |
|
Ferric chloride test |
- |
- |
- |
+ |
- |
|
Gelatin test |
- |
- |
- |
+ |
+ |
|
Lead acetate test |
- |
- |
- |
+ |
+ |
|
Ellagic Acid Test |
- |
- |
- |
+ |
+ |
|
Potassium dichromate test |
- |
+ |
+ |
+ |
+ |
|
Hot water test |
- |
- |
- |
+ |
+ |
|
Test for Cartenoids |
- |
- |
- |
+ |
- |
Tannins |
Gelatin test |
- |
- |
- |
+ |
+ |
|
Braymer’s test |
- |
- |
+ |
+ |
+ |
|
10% NaOH test |
- |
- |
+ |
+ |
+ |
|
Bromine water test |
- |
- |
+ |
+ |
+ |
|
Lead sub acetate test |
- |
- |
+ |
- |
- |
|
Phenazone test |
- |
- |
+ |
- |
+ |
|
Mitchell’s test |
- |
- |
- |
+ |
- |
Phlobatannins |
HCl test |
- |
- |
- |
- |
- |
Saponins |
Foam test |
- |
- |
- |
+ |
+ |
|
NaHCO3 test |
- |
- |
- |
+ |
+ |
|
Olive oil test |
- |
- |
- |
+ |
- |
|
Haemolysis test |
- |
- |
- |
+ |
+ |
Phytosterols |
Salkowski’s test |
+ |
- |
+ |
+ |
+ |
|
Libermann-Burchard’s test |
+ |
- |
+ |
+ |
+ |
|
Acetic anhydride test |
+ |
- |
+ |
+ |
+ |
|
Hesse's response |
- |
- |
- |
+ |
- |
|
Sulphur test |
- |
+ |
+ |
- |
- |
Cholesterol |
Test :1 |
+ |
- |
+ |
- |
- |
Terpenoids |
Test :2 |
+ |
- |
+ |
+ |
- |
Triterpenoids |
Salkowski’s test |
+ |
- |
+ |
+ |
- |
Diterpenes |
Copper acetate test |
- |
- |
- |
+ |
+ |
Lignins |
Labat test |
- |
+ |
- |
- |
- |
|
Furfuraldehyde test |
- |
- |
- |
- |
- |
Carotenoids |
Carr-Price reaction |
+ |
- |
+ |
+ |
- |
Quinones |
Alcoholic KOH test |
- |
- |
- |
- |
+ |
|
Conc. HCl test |
- |
- |
- |
- |
+ |
|
Sulphuric acid test |
- |
- |
- |
- |
+ |
Anthraquinones |
Borntrager’s test |
- |
- |
- |
- |
+ |
|
Ammonium hydroxide test |
- |
- |
- |
- |
+ |
Anthocyanins |
HCl test |
- |
- |
- |
- |
- |
Leuconthocyanins |
Isoamyl alcohol test |
- |
- |
- |
- |
- |
Carboxylic acid |
Effervescence test |
- |
+ |
- |
- |
- |
Coumarins |
NaOH paper test |
- |
- |
- |
- |
- |
|
NaOH test |
- |
- |
- |
- |
- |
Emodins |
Test:1 |
- |
- |
- |
- |
- |
Gums and Mucilages |
Alcohol test |
- |
- |
- |
- |
- |
Resins |
Acetic anhydride test |
+ |
- |
+ |
- |
- |
|
Turbidity test |
+ |
- |
+ |
- |
- |
Fixed Oils and Fat |
Spot test |
+ |
- |
+ |
- |
- |
|
Saponification test |
+ |
- |
+ |
- |
- |
Volatile Oils |
Fluorescence test |
- |
- |
- |
- |
- |
(+) indicates the compound which is present
(-) indicates the compound which is absent
DISCUSSION:
The study suggests that Hygrophila polysperma leaf contains a range of bioactive compounds, which could be beneficial for human health. These compounds might have potential therapeutic properties, particularly in the treatment of infertility. The presence of these bioactive substances supports the traditional use of the whole plant in treating various ailments. The findings reinforce the idea that natural plant products often contain compounds that modern science is just beginning to understand and validate. The next phase of the study will likely focus on isolating and purifying the specific bioactive compounds responsible for the observed medicinal effects. This could involve using techniques like chromatography (e.g., HPLC or TLC) to separate the different compounds and identify their structures.
CONCLUSION:
The phytochemical analysis of Hygrophila polysperma has revealed the presence of a variety of bioactive compounds that are likely responsible for the plant's therapeutic properties. These compounds include alkaloids, flavonoids, phenolic acids, glycosides, and other secondary metabolites, which have demonstrated potential medicinal value in various health conditions. As a next step, isolating and purifying these bioactive compounds will be essential to fully understand their molecular structure, potency, and mechanisms of action. Further in vitro and in vivo studies will be necessary to evaluate their effectiveness and safety in human health applications. This research not only validates the traditional medicinal practices surrounding Hygrophila polysperma, but it also opens avenues for future pharmaceutical and therapeutic applications.
ACKNOWLEDGEMENT:
I would like to express my heartfelt gratitude to our beloved Dean, guide, co-guide, advisory committee members and our lab technicians and for contributed to the successful completion of this study on the phytochemical analysis of Hygrophila polysperma.
REFERENCES
Nishvanth F.*, Nagavalli D., Premkumar B., Exploring the Phytochemical Diversity of Hygrophila Polysperma Leaf Extracts with Varying Polarity Solvents, Int. J. of Pharm. Sci., 2025, Vol 3, Issue 5, 1473-1487 https://doi.org/10.5281/zenodo.15379934