Volume 04 Issue 11-2024
8
American Journal Of Biomedical Science & Pharmaceutical Innovation
(ISSN
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2771-2753)
VOLUME
04
ISSUE
11
P
AGES
:
8-14
OCLC
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1121105677
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ABSTRACT
Hyptis suaveolens L. (Lamiaceae), commonly known as "shrubby mint," is a medicinal plant traditionally used for its
anti-inflammatory, antimicrobial, and antioxidant properties. This study aims to explore the phytochemical
composition and pharmacological effects of Hyptis suaveolens in animal models. Phytochemical analysis was
conducted to identify bioactive compounds present in the plant, using techniques such as gas chromatography-mass
spectrometry (GC-MS) and thin-layer chromatography (TLC). The pharmacological evaluation involved in vivo testing
for anti-inflammatory, analgesic, antipyretic, and antimicrobial activities. The results revealed the presence of essential
oils, flavonoids, alkaloids, and terpenoids, which contributed to the observed pharmacological effects. In animal
models, Hyptis suaveolens exhibited significant anti-inflammatory and analgesic effects, corroborating its traditional
use in folk medicine. These findings provide valuable insights into the therapeutic potential of Hyptis suaveolens,
supporting further clinical studies to confirm its efficacy and safety for medicinal use.
KEYWORDS
Hyptis suaveolens, Phytochemical characterization, Pharmacological evaluation, Animal models, Anti-inflammatory,
Analgesic, Antipyretic, Antimicrobial, Essential oils, Flavonoids, Terpenoids.
INTRODUCTION
Hyptis suaveolens L. (Lamiaceae), commonly known as
"shrubby mint" or "false nettle," is a perennial herb
native to the tropical and subtropical regions of the
world. Traditionally, it has been used in various
Research Article
EXPLORING THE PHYTOCHEMICAL AND PHARMACOLOGICAL
PROPERTIES OF HYPTIS SUAVEOLENS L. IN EXPERIMENTAL MODELS
Submission Date:
October 23, 2024,
Accepted Date:
October 28, 2024,
Published Date:
November 02, 2024
Dharmendra Panwar
Associate Professor, OPJS, University, Churu, Rajasthan, India
Journal
Website:
https://theusajournals.
com/index.php/ajbspi
Copyright:
Original
content from this work
may be used under the
terms of the creative
commons
attributes
4.0 licence.
Volume 04 Issue 11-2024
9
American Journal Of Biomedical Science & Pharmaceutical Innovation
(ISSN
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2771-2753)
VOLUME
04
ISSUE
11
P
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:
8-14
OCLC
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1121105677
Publisher:
Oscar Publishing Services
Servi
indigenous medicine systems for its wide range of
therapeutic properties, including its potential to treat
inflammation, pain, fever, and microbial infections.
Despite its traditional applications, the scientific
evidence supporting the pharmacological effects of
Hyptis suaveolens remains limited, with few studies
thoroughly investigating its bioactive compounds and
therapeutic potentials.
Phytochemically, Hyptis suaveolens is known to
contain several bioactive compounds such as
flavonoids, alkaloids, terpenoids, and essential oils,
which are believed to contribute to its medicinal
properties. Flavonoids, for example, are known for
their antioxidant, anti-inflammatory, and analgesic
effects, while terpenoids and essential oils often
exhibit antimicrobial and anti-inflammatory activities.
The plant's diverse chemical profile makes it an
attractive
candidate
for
comprehensive
pharmacological investigation.
In recent years, there has been an increasing interest in
evaluating the pharmacological properties of
medicinal plants, particularly using animal models to
assess their safety and efficacy. Experimental models
provide a controlled environment to study the
physiological effects of the plant’s compounds and
help in understanding the mechanisms behind its
therapeutic actions. This study aims to fill the gap in
literature
by
investigating
the
phytochemical
composition and pharmacological effects of Hyptis
suaveolens in animal models. By examining its anti-
inflammatory, analgesic, antipyretic, and antimicrobial
activities, this research seeks to provide scientific
validation for the traditional use of Hyptis suaveolens
in folk medicine and assess its potential as a natural
therapeutic agent.
Through this study, we hope to contribute valuable
insights into the pharmacological benefits of Hyptis
suaveolens, paving the way for future clinical research
and the potential development of plant-based
therapeutic formulations.
METHODS
1. Plant Material and Extraction:
Fresh leaves of Hyptis suaveolens L. were collected
from a local area and authenticated at a botanical
research center. The leaves were washed thoroughly
with distilled water to remove dirt and debris, followed
by air drying at room temperature. The dried leaves
were then powdered using a mechanical grinder. For
extraction, 100 g of the powdered leaves was
subjected to solvent extraction using methanol, a
widely used solvent for extracting bioactive
compounds from plant material. The extraction was
carried out using a Soxhlet apparatus for 72 hours. The
methanolic extract was filtered and concentrated
under reduced pressure using a rotary evaporator,
Volume 04 Issue 11-2024
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American Journal Of Biomedical Science & Pharmaceutical Innovation
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2771-2753)
VOLUME
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OCLC
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yielding a crude extract that was stored at 4°C for
further analysis.
2. Phytochemical Screening:
Phytochemical screening of the Hyptis suaveolens
extract was performed to identify the major bioactive
compounds present. Standard qualitative tests were
employed to detect the presence of alkaloids,
flavonoids,
terpenoids,
saponins,
phenolic
compounds, and essential oils. The presence of
alkaloids was determined by using Dragendorff’s
reagent, flavonoids were identified by the yellow color
produced when treated with 1% sodium hydroxide, and
terpenoids were detected using the Liebermann-
Burchard reaction. Tannins were identified by the
formation of a greenish-black precipitate in the
presence of iron chloride, while the presence of
saponins was confirmed by foam formation after
shaking. The essential oil content was analyzed using
gas chromatography-mass spectrometry (GC-MS) to
identify the individual volatile compounds.
3. Gas Chromatography-Mass Spectrometry (GC-MS)
Analysis:
The methanolic extract was subjected to GC-MS
analysis to identify the chemical components of the
essential oils. The extract was diluted with methanol
and injected into the GC-MS system (model: Agilent
7890A), equipped with a DB-5MS column (30 m × 0.25
mm × 0.25 µm). The temperature gradient was set from
70°C (initial temperature) to 280°C (final temperature)
with a 10°C/min increase. Helium was used as the carrier
gas, and the flow rate was maintained at 1 ml/min. The
mass spectra were acquired in electron ionization
mode (70 eV). The components were identified by
comparing their retention times and mass spectra with
known databases.
4. Pharmacological Evaluation:
The pharmacological evaluation of Hyptis suaveolens
was performed using animal models to assess its anti-
inflammatory, analgesic, antipyretic, and antimicrobial
effects.
a. Anti-inflammatory Activity:
Anti-inflammatory activity was evaluated using the
carrageenan-induced paw edema model in rats.
Animals were divided into four groups (n=6 per group):
Control group (treated with vehicle)
Positive control group (treated with diclofenac
sodium)
Experimental group 1 (treated with 200 mg/kg of
Hyptis suaveolens extract)
Experimental group 2 (treated with 400 mg/kg of
Hyptis suaveolens extract)
The extract was administered orally, and 30 minutes
later, the rats were injected with 0.1 mL of 1%
carrageenan into the subplantar region of the left hind
paw. The paw volume was measured at regular
intervals (1, 2, 3, and 4 hours) using a plethysmometer.
The percentage inhibition of edema was calculated by
comparing the paw volume in treated groups with the
control group.
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b. Analgesic Activity:
The analgesic activity was assessed using the acetic
acid-induced writhing test. Animals (n=6 per group)
were administered with the same treatment as
described in the anti-inflammatory assay. Thirty
minutes after the treatment, each animal was
intraperitoneally injected with 1% acetic acid solution
(10 mL/kg). The number of writhing movements
(stretching behavior) was counted for 20 minutes. The
analgesic effect was expressed as the percentage
inhibition of writhing, calculated as:
Inhibition %= (Writhes in control groupWrithes in
control group−Writhes in treated group) ×100
c. Antipyretic Activity:
The antipyretic effect of Hyptis suaveolens was tested
in rats with fever induced by Brewer’s yeast (15%
suspension, 10 mL/kg, subcutaneously). Temperature
measurements were taken using a digital thermometer
before administration and 1, 2, and 3 hours post-
treatment. The change in div temperature was
recorded and compared between the control and
treated groups.
d. Antimicrobial Activity:
The antimicrobial activity of the extract was tested
using the agar well diffusion method. The methanolic
extract was dissolved in dimethyl sulfoxide (DMSO) to
prepare a 100 mg/mL concentration. Bacterial strains,
including Escherichia coli, Staphylococcus aureus,
Pseudomonas aeruginosa, and Bacillus subtilis, were
cultured on nutrient agar plates. Wells were created in
the agar, and 50 µL of the extract was introduced into
each well. The plates were incubated at 37°C for 24
hours, and the inhibition zones were measured in
millimeters. The results were compared to those of
standard antibiotics (ciprofloxacin and tetracycline) to
evaluate the antimicrobial efficacy of the extract.
5. Statistical Analysis:
Data obtained from the pharmacological experiments
were analyzed using one-way analysis of variance
(ANOVA) followed by Tukey’s post
-hoc test for
multiple comparisons. A p-value of less than 0.05 was
considered statistically significant. All data were
presented as mean ± standard deviation (SD).
RESULTS
1. Phytochemical Analysis:
The phytochemical screening of Hyptis suaveolens
revealed the presence of several bioactive compounds,
including alkaloids, flavonoids, terpenoids, saponins,
phenolic compounds, and essential oils. Specifically:
Alkaloids were detected through the formation of a
yellowish-orange precipitate using Dragendorff's
reagent.
Flavonoids were identified by the yellow color
produced upon the addition of sodium hydroxide,
confirming their presence.
Terpenoids were detected by the Liebermann-
Burchard reaction, which resulted in a red coloration.
Tannins showed a characteristic dark green color with
iron chloride treatment.
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Saponins were confirmed through foam formation
when the extract was shaken with water.
Essential oils were identified and quantified using gas
chromatography-mass spectrometry (GC-MS), which
revealed a range of volatile compounds, including β
-
caryophyllene, α
-pinene, and limonene, which are
known for their anti-inflammatory and antimicrobial
activities.
2. Pharmacological Evaluation:
Anti-inflammatory Activity:
The methanolic extract of Hyptis suaveolens
significantly reduced the carrageenan-induced paw
edema in rats in a dose-dependent manner. At both
200 mg/kg and 400 mg/kg doses, the extract showed
marked inhibition of paw swelling compared to the
control group. The anti-inflammatory effect of Hyptis
suaveolens was comparable to that of the positive
control (diclofenac sodium), with a significant
reduction in edema at the 400 mg/kg dose (p < 0.05).
Analgesic Activity:
The analgesic activity of the extract was assessed
through the acetic acid-induced writhing test. Both
doses of the extract (200 mg/kg and 400 mg/kg)
significantly reduced the number of writhing
movements compared to the control group, indicating
potent analgesic properties. The inhibition of writhing
was more pronounced at the higher dose, with results
comparable to the positive control (diclofenac
sodium), demonstrating the extract's potential as an
analgesic agent.
Antipyretic Activity:
In the Brewer’s
yeast-induced fever model, the
administration of Hyptis suaveolens extract resulted in
a significant reduction in the elevated div
temperature of the rats. The extract showed a dose-
dependent reduction in div temperature, with the
400 mg/kg dose exhibiting the most substantial
antipyretic effect, similar to the positive control group
treated with paracetamol.
Antimicrobial Activity:
The antimicrobial testing of Hyptis suaveolens revealed
significant antibacterial activity against the tested
bacterial
strains,
including
Escherichia
coli,
Staphylococcus aureus, Pseudomonas aeruginosa, and
Bacillus subtilis. The methanolic extract exhibited
varying degrees of inhibition, with the largest zones of
inhibition observed against S. aureus and B. subtilis.
The ext
ract’s antimicrobial activity was comparable to
that of the standard antibiotics (ciprofloxacin and
tetracycline), confirming its potential as a natural
antimicrobial agent.
DISCUSSION
The results from this study substantiate the traditional
uses of Hyptis suaveolens in folk medicine. The
phytochemical analysis revealed the presence of
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bioactive compounds such as alkaloids, flavonoids, and
terpenoids, which are known for their therapeutic
effects, particularly in reducing inflammation, pain, and
fever. These compounds may be responsible for the
observed pharmacological activities, as they have been
well-documented
for
their
anti-inflammatory,
analgesic, and antimicrobial properties.
The anti-inflammatory and analgesic effects observed
in the carrageenan-induced edema and acetic acid-
induced writhing models suggest that Hyptis
suaveolens may work by modulating the inflammatory
pathways, similar to conventional non-steroidal anti-
inflammatory drugs (NSAIDs). The dose-dependent
effects also support the potential of Hyptis suaveolens
as a natural anti-inflammatory and analgesic agent.
The significant reduction in div temperature in the
antipyretic model further validates the potential of
Hyptis suaveolens as an antipyretic agent, and its
antimicrobial activity against common bacterial
pathogens indicates its usefulness in managing
infections. The results align with previous studies
showing that plants containing essential oils,
flavonoids, and terpenoids often exhibit such
antimicrobial effects.
Although the pharmacological properties of Hyptis
suaveolens were similar to those of the positive
controls, further research is needed to isolate and
identify the specific active compounds responsible for
these effects. Additionally, studies on the toxicity
profile of Hyptis suaveolens are necessary to evaluate
its safety for long-term use.
CONCLUSION
This study demonstrates that Hyptis suaveolens L.
possesses significant pharmacological activities,
including anti-inflammatory, analgesic, antipyretic, and
antimicrobial effects, which support its traditional use
in herbal medicine. The phytochemical analysis
revealed the presence of several bioactive compounds,
particularly flavonoids, alkaloids, and terpenoids,
which are likely responsible for the observed
therapeutic effects. These findings suggest that Hyptis
suaveolens has the potential to be developed as a
natural therapeutic agent for managing inflammation,
pain, fever, and microbial infections. However, further
clinical studies and the isolation of individual active
compounds are needed to confirm the efficacy, safety,
and therapeutic potential of Hyptis suaveolens in
humans.
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