GC-MS Profiling and Evaluation of Anthelmintic Activity of Saraca indica Roxb and Ocimum sanctum Extracts on Pheretima posthuma

 

Pinki Verma1*, Saheb Kuila2, Subhendu Kumar Jana3, Animesh Deb4, Bipul Das5

1Associate Professor, Department of Pharmacology,

Aditya Bangalore Institute of Pharmacy Education & Research, Yelahanka, Bengaluru, Karnataka, India.

2Research Scholar, Department of Pharmacology,

Aditya Bangalore Institute of Pharmacy Education & Research, Yelahanka, Bengaluru, Karnataka, India.

3Research Scholar, Department of Pharmacology,

Aditya Bangalore Institute of Pharmacy Education & Research, Yelahanka, Bengaluru, Karnataka, India.

4Research Scholar, Department of Pharmacology,

Aditya Bangalore Institute of Pharmacy Education & Research, Yelahanka, Bengaluru, Karnataka, India.

5Research Scholar, Department of Pharmacology,

Aditya Bangalore Institute of Pharmacy Education & Research, Yelahanka, Bengaluru, Karnataka, India.

*Corresponding Author E-mail: vermapinki05@gmail.com

 

ABSTRACT:

Background: Helminth infections continue to be a significant public health concern worldwide, especially in tropical nations, leading to nutritional deficiencies, decreased work efficiency, and increased disease burden. The emergence of resistance to commonly used anthelmintic drugs has created an urgent need for new and effective plant-based therapeutic alternatives. Aim: This study aimed to investigate the anthelmintic efficacy and phytochemical profile of ethanolic extracts of Saraca indica (Roxb.) and Ocimum sanctum, utilizing Gas Chromatography–Mass Spectrometry (GC-MS). Methods: Ethanolic extracts of Saraca indica and Ocimum sanctum were obtained via Soxhlet extraction. Phytochemical constituents of Saraca indica were characterized through GC-MS analysis. Anthelmintic activity was evaluated using adult Pheretima posthuma at concentrations of 50 and 100mg/mL, and the results were compared with the standard drug albendazole (20mg/mL) by measuring paralysis and mortality times. Results: GC-MS profiling of Saraca indica revealed 52 bioactive compounds, including phenols, flavonoids, alkaloids, terpenoids, saponins, and tannins. Both extracts showed marked dose-dependent anthelmintic activity. The combined ethanolic extract of both plants at 100mg/mL caused rapid paralysis (5.3±0.12min) and death (9.5±0.26min), demonstrating stronger effectiveness than albendazole. Conclusion: The findings confirm that ethanolic extracts of Saraca indica and Ocimum sanctum exhibit potent anthelmintic action, likely due to their rich phytochemical content. These medicinal plants represent promising candidates for the development of safe and effective herbal anthelmintic formulations, supporting further research on bioactive compound isolation and formulation design.

 

KEYWORDS: Saraca indica, Ocimum sanctum, GC-MS, Anthelmintic activity, Pheretima posthuma.

 

 


1. INTRODUCTION:

Need for the Study:

The relentless prevalence of helminthiasis continues to pose a substantial challenge to global health, disproportionately impacting impoverished populations in tropical climates and contributing to a cycle of nutritional deficiencies, developmental delays, and economic strain. Contemporary chemotherapeutic control of these parasitic infestations faces a formidable threat from escalating anthelmintic resistance, diminishing the efficacy of standard treatments, and highlighting an urgent need for alternative pharmacotherapeutic strategies.1 Within this context, a vast repository of medicinal plants presents an invaluable resource for biodiscovery, offering complex matrices of phytoconstituents that may act through novel mechanisms, potentially circumventing existing resistance pathways.2

 

This research strategically focuses on two botanicals with profound ethnomedicinal significance: Saraca indica (Ashoka) and Ocimum sanctum (Tulsi). While O. sanctum is celebrated for its broad-spectrum antimicrobial properties and S. indica is revered in gynaecological care, their specific vermifugal activities have not been comprehensively elucidated through modern scientific protocols, representing a significant knowledge gap.3,4 The present study is innovatively designed to not only bio-prospect these species but also to delineate their chemical essence. By employing Gas Chromatography-Mass Spectrometry (GC-MS), the research aims to construct a detailed phytochemical profile of the extracts, identifying the specific volatile bioactive principles that may be responsible for the anthelmintic effect.5

 

To quantitatively assess efficacy, the investigation utilizes Pheretima posthuma as a preliminary biological model. This earthworm shares remarkable anatomical and neuro-muscular similarities with human intestinal helminths, making it a validated and humane surrogate for initial anthelmintic screening.6 The study measures parameters of paralysis and mortality, providing robust, quantitative data to correlate specific phytochemicals with biological activity. This integrated approach, which synergizes traditional botanical knowledge with advanced analytical and biological screening techniques, is a critical step towards developing standardized, evidence-based, and sustainable herbal formulations to augment the beleaguered anthelmintic arsenal.

 

2. METHODOLOGY:

2.1 Collection and Authentication of Plant Material:

Fresh bark of Saraca indica Roxb. and Ocimum sanctum leaves were purchased from the local market. The sample was authenticated by Department of Pharmacognosy, Aditya Bangalore Institute of Pharmacy Education and Research. After authentication, fresh bark of Saraca indica and leaves of Ocimum santum were collected in bulk, washed under running tap water, dried under shade for a period of seven days, and then pulverized in a mechanical grinder to obtain coarse powder. The dried powder was stored in airtight bottles.

 

2.2 Preparation of Ethanolic Extracts of Saraca indica (Roxb.) Bark and Ocimum sanctum Leaves:

Plant powders (25 g each) of Saraca indica (Roxb.) bark and Ocimum sanctum leaves were individually extracted with 250ml of 99% ethanol using a Soxhlet apparatus for 4-5hours. The resulting extracts were filtered and concentrated using a rotary evaporator under reduced pressure until a dry semisolid mass was obtained. The dried extracts were stored in airtight containers under refrigeration for further experimental use.7,8

 

2.3 Experimental worms:

Indian earthworm Pheretima posthuma was used to study Anthelmintic activity. The earthworms were collected from the moist soil from the nearby region of Yelahanka, Bengaluru, Karnataka and washed with normal saline to remove all faecal matter. The earthworms in 6-8cm in length, were used for the experimental protocol due to their anatomical and physiological resemblance to the intestinal roundworm parasites of human beings.

 

2.4 Phytochemical evaluation:

The ethanolic extracts were tested for carbohydrates, proteins, amino acids, fixed oil, alkaloids, glycosides, flavonoids, tannins, steroids, saponins, and phenols. 9,10,11

 

2.5. GC-MS Analysis:

The bioactive compounds in Saraca indica (Roxb.) bark extracts were profiled using Gas Chromatography-Mass Spectrometry (GC-MS). The analytical conditions were as follows:

·       Instrument: GC-MS system (+EI TIC Scan GC-MS-03-6235.D) with an Elite 1 column.

·       Carrier Gas: High-purity helium at a constant flow rate of 1.0ml/min.

·       Injection: 2µL sample volume at an injector temperature of 280°C.

·       Oven Program: Initial temperature of 40°C, ramped to a final temperature of 280°C, followed by a 5-minute hold.

 

Compounds identification was based on the correlation of mass spectra and retention times with reference data. The relative quantity of each compound was determined from the normalized peak area.12

 

2.6 Anthelmintic activity on Pheretima Posthuma:

The present in-vitro evaluation of anthelmintic activity was conducted in the Department of Pharmacology, Aditya Bangalore Institute of Pharmacy Education and Research (ABIPER), Bengaluru, during August 2025. The experimental protocol was adapted with slight modifications from a previously established procedure. Adult specimens of Indian earthworm Pheretima posthuma were selected due to their close anatomical and physiological similarity to human intestinal nematode parasites, making them a suitable model for preliminary anthelmintic screening. Albendazole (20 mg/mL) served as the standard positive control, while normal saline was used as the negative control. The test groups were treated with ethanolic extract of the selected drug at two concentrations: 50mg/mL and 100mg/mL. Worms were placed in each petri dish containing the respective standard, test, and control solutions, and were observed continuously for the time of paralysis and time of death. Paralysis was defined as the absence of voluntary movement, except when subjected to vigorous shaking. Death time was recorded when worms showed no response even to external stimuli. The activity of the extract at both concentrations was compared directly with the standard Albendazole. All experimental values are presented as Mean±SEM, calculated from two worms per group.13,14,15

 

2.7 Statistical Analysis:

All results are expressed as means±standard errors of the mean (SEM). Statistical analysis was conducted using one-way analysis of variance (ANOVA), followed by Dunnett's multiple comparison post-test to compare the control group with various treatment groups. Statistical significance was established at *p<0.05, **p<0.01, and ***p<0.001,

 

3. RESULT:

Table 1: Preliminary phytochemical results of Ocimum sanctum:

Phytochemical

Test

Inference

Alkaloids

Mayer’test

Wagner’s test

Present

Present

Flavonoids

Sodium hydroxide test

Alkaline reagent test

Present

Present

Glycosides

Liebermann’s test

Salkowski’s test

Absent

Absent

Tannin

Ferric chloride test

Gelatine test

Present

Present

Saponin

Foam test

Present

Oil

Stain test

Absent

Carbohydrates

Molisch’s test

Absent

Steroids

Benedict’s test

Absent

Proteins

Millon's test

Absent

 

Table 2: Preliminary phytochemical test results of Saraca indica:

Phytochemical

Test

Inference

Tannins

Ferric chloride test

Gelatin test

Present

Present

Alkaloids

Mayers test

Wagners test

Present

Present

Saponins

Foam test

Present

Flavonoids &glycosides

Sodium hydroxide test

Present

Starch

Iodine test

Present

Terpenoids

Salkowski test

Present

Phenols

Ferric chloride test

Bromine Water test

Present

Present

Carbohydrates

Molischs test

Saponification test

Present

Present 

 

3.2 Gas chromatography–mass spectrometry (GC–MS) analysis

This study, therefore, aimed to identify the bioactive compounds in the ethanolic extract of Saraca indica (Roxb.) bark utilizing Gas Chromatography-Mass Spectrometry (GC-MS) analysis. The investigation revealed the presence of 52 distinct phytochemicals, details of which-including their retention time (RT), molecular formula, molecular weight (MW), and concentration (peak area %)-are compiled in Table 3. The corresponding chromatogram is displayed in Figure 1, while the mass spectra of the identified compounds are presented in Figure 1.

 

Figure 1: Mass spectra of NIST database


 

Table 3: Phytochemical constituents identified in extracts of Saraca indica (Roxb.) bark by GC-MS analysis             

RT

Compound Name

CAS No.

Formula

Area

Match Score

Area %-T

Area %-M

4.3979

Diglycerol

627-82-7

C6H14O5

293222

64.4

1.97

5.76

4.6201

Oxirane, [(2-propenyloxy) methyl]-

106-92-3

C6H10O2

85160

64.8

0.57

1.67

5.4422

N-cyclohexyl-3,4-methylenedioxyamphetamine

1000378-93-5

C16H23NO2

46263

65.1

0.31

0.91

5.6866

4-Noneone, 5-nitro-

6065-01-6

C9H17NO2

45315

56.9

0.30

0.89

6.2088

4H-Pyran-4-one, 2,3-dihydro-3,5-dihydroxy-6-methyl-

28564-83-2

C6H8O4

26205

67.2

0.18

0.52

6.6754

1-Octanol, 2-butyl-

3913-02-8

C12H26O

59963

67.4

0.40

1.18

6.7531

Estragole

140-67-0

C10H12O

121063

83.1

0.81

2.38

7.0864

1Allyl(dimethyl)siloxypropane

76161-99-4

C8H18OSi

61191

64.6

0.41

1.20

7.2309

(-)-Carvone

6485-40-1

C10H14O

85057

81.9

0.57

1.67

7.6197

Anethole

104-46-1

C10H12O

183905

94.2

1.24

3.62

7.6864

Phenol, 2-methyl-5-(1-methylethyl)-

499-75-2

C10H14O

18610

78.1

0.13

0.37

7.9308

Phthalaldehydic acid, oxime

6383-59-1

C8H7NO3

37826

59.4

0.25

0.74

8.2752

Cyclopropanemethanol, 2,2,3,3-tetramethyl-

2415-96-5

C8H16O

45780

67.4

0.31

0.90

8.5418

Tetradecane

629-59-4

C14H30

43729

82.5

0.29

0.86

8.6196

Indole-triazole derivative

1000296-95-0

C12H13N7

132801

68.6

0.89

2.61

8.9973

d-Glycero-d-allo-heptose

1000130-14-7

C7H14O7

429436

71.1

2.89

8.44

9.2528

3-(2-N-Acetyl-N-methylaminoethyl) indol

91821-04-4

C13H16N2O

78922

69.4

0.53

1.55

9.4972

Phenol, 2,4-bis(1,1-dimethylethyl)-

96-76-4

C14H22O

11846

73.7

0.08

0.23

9.6750

bis[(2Z)-Hex-2-en-1-yloxy] (dimethyl)silane

1000352-73-9

C14H28O2Si

73042

65.6

0.49

1.44

10.1972

Tetradecane, 2,6,10-trimethyl-

14905-56-7

C17H36

51731

72.0

0.35

1.02

10.3416

5-Ethyl-1,3-dioxane-5-methanol, tert-butyldimethylsilyl ether

1000364-41-8

C13H28O3Si

119819

62.9

0.81

2.36

10.6304

β-D-Glucopyranose, 4-O-β-D-galactopyranosyl-

5965-66-2

C12H22O11

157060

66.4

1.06

3.09

11.1415

3-O-Methyl-d-glucose

1000127-25-9

C7H14O6

5086996

82.7

34.23

100.00

11.2748

tert-Hexadecanethiol

25360-09-2

C16H34S

22930

60.9

0.15

0.45

11.3970

Tetradecanoic acid

544-63-8

C14H28O2

93116

70.1

0.63

1.83

11.7414

2-Hexadecanol

14852-31-4

C16H34O

42405

67.1

0.29

0.83

11.8525

Isopropyl myristate

110-27-0

C17H34O2

68132

88.9

0.46

1.34

12.7857

n-Hexadecanoic acid

57-10-3

C16H32O2

587790

89.3

3.95

11.55

12.9968

Hexadecanoic acid, ethyl ester

628-97-7

C18H36O2

46553

65.5

0.31

0.92

13.5967

Hexadecane, 1,1-bis(dodecyloxy)-

56554-64-4

C40H82O2

48322

67.4

0.33

0.95

13.9189

9,19-Cyclolanost-24-en-3-ol, acetate, (3β)-

1259-10-5

C32H52O2

1412372

78.5

9.50

27.76

14.0522

9-Octadecenoic acid (Z)-, 2-(phenyl)-1,3-dioxolan-4-ylmethyl ester, cis-

56599-45-2

C28H44O4

222319

56.7

1.50

4.37

14.2744

Octadecane, 3-ethyl-5-(2-ethylbutyl)-

55282-12-7

C26H54

111483

65.2

0.75

2.19

14.8521

Octadecane, 3-ethyl-5-(2-ethylbutyl)-

55282-12-7

C26H54

193717

72.9

1.30

3.81

14.9188

9,19-Cyclolanost-24-en-3-ol, acetate, (3β)-

1259-10-5

C32H52O2

330867

72.8

2.23

6.50

15.3965

Octadecane, 3-ethyl-5-(2-ethylbutyl)-

55282-12-7

C26H54

53158

70.8

0.36

1.04

15.6298

9,19-Cyclolanost-24-en-3-ol, acetate, (3β)-

1259-10-5

C32H52O2

1844663

83.1

12.41

36.26

15.9298

Octadecane, 3-ethyl-5-(2-ethylbutyl)-

55282-12-7

C26H54

93970

66.3

0.63

1.85

16.0409

Glycerol 1-palmitate

542-44-9

C19H38O4

166070

80.0

1.12

3.26

16.2519

1H-Cyclopropa [3,4] benz[1,2-e] azulene derivative

77508-64-6

C26H36O8

218921

65.2

1.47

4.30

16.4408

Heptacosane, 1-chloro-

62016-79-9

C27H55Cl

36503

64.6

0.25

0.72

16.9630

1H-Cyclopropa [3,4] benz[1,2-e] azulene derivative

77508-64-6

C26H36O8

493162

68.7

3.32

9.69

17.0852

Octadecanoic acid, 2,3-dihydroxypropyl ester

123-94-4

C21H42O4

59696

54.0

0.40

1.17

17.4296

Octadecahydro-2H-picene carboxylic acid methyl ester

14356-56-0

C33H52O5

100745

53.9

0.68

1.98

18.0184

Propanoic acid steroid derivative

1000194-01-2

C27H42O4

95979

55.6

0.65

1.89

19.3071

Dibenz[a,c]cyclohexane, 2,4,7-trimethoxy-

145068-33-3

C18H20O3

44865

57.0

0.30

0.88

19.3849

7-Dehydrodiosgenin

85706-84-9

C27H40O3

94726

66.3

0.64

1.86

20.7736

Cholest-5-ene, 3-methoxy-, (3β)-

1174-92-1

C28H48O

84602

57.4

0.57

1.66

21.0180

Stigmasterol

83-48-7

C29H48O

47917

56.1

0.32

0.94

21.6846

γ-Sitosterol

83-47-6

C29H50O

426499

78.4

2.87

8.38

22.5178

1,6,10,14,18,22-Tetracosahexaen-3-ol

54159-46-5

C30H50O

282918

69.6

1.90

5.56

22.9067

Lupeol

545-47-1

C30H50O

243617

75.2

1.64

4.79

 


Figure 2: GC-MS Chromatogram of the ethanolic extract of Saraca indica (Roxb.) bark

 


3.3. Anthelmintic activity:

Table 4: Effect of Ethanolic Extract of OS+SI in Earthworms

Group

Treatment

Concentration (mg/ml)

Time required for paralysis (min)

Time required for death (min)

1

Negative control (saline)

--

--

--

2

Positive control(albendazole)

   20

7.3±0.15***

14±0.29***

3

Ethanolic extract-OS+SI

   50

8.3±0.19***

16±0.39***

Ethanolic extract-OS+SI

   100

5.3±0.12***

9.5±0.26***

Values are expressed as mean±SEM

 


Figure-3: Anthelmintic Activity of Ethanolic OS+SI Extract – Paralysis time

All the values are expressed in mean±S.E.M., n = 2, One way ANOVA followed by Dunnett’s multiple comparison test, *p<0.05, **p<0.01, and ***p<0.001 compared with the standard albendazole.

 

Figure-4:  Anthelmintic Activity of Ethanolic OS+SI Extract – Death time.

All the values are expressed in mean±S.E.M., n = 2, One way ANOVA followed by Dunnett’s multiple comparison test, *p<0.05, **p<0.01, and ***p<0.001 compared with the standard albendazole.

 

Figure 5: Anthelmintic Activity of OS+SI ethanolic extract

 

4. DISCUSSION:

The findings of the current research strongly substantiate the traditional medicinal application of Saraca indica and Ocimum sanctum in treating helminthic infestations. The preliminary phytochemical assessment confirmed the presence of several key secondary metabolites, including tannins, alkaloids, saponins, flavonoids, terpenoids, and phenolic compounds. These constituents have been widely associated with antiparasitic actions, particularly through mechanisms involving interference with the neuromuscular function of helminths, disruption of external cuticular structures, and inhibition of essential metabolic pathways.

 

Comprehensive GC-MS analysis of Saraca indica extract identified 52 phytochemicals, including notable compounds such as hexadecanoic acid, phytol, neophytadiene, octadecanoic acid, and squalene. These molecules possess well-documented anti-inflammatory, antioxidant, antimicrobial, and antiparasitic potential, which could collectively contribute to the observed anthelmintic activity.

 

In-vitro assessment demonstrated a pronounced dose-dependent anthelmintic response. The combined ethanolic extract (OS+SI) at 100mg/mL induced significantly earlier paralysis and mortality of Pheretima posthuma compared to the standard drug albendazole, suggesting a synergistic effect between the two plant species. This potent activity may be associated with the high solubility and extraction efficiency of ethanol, enabling maximum recovery of pharmacologically relevant compounds.

 

These outcomes are consistent with earlier literature supporting the value of polyherbal therapeutic approaches and indicate promising potential for plant-derived anthelmintic agents in addressing increasing drug resistance. Nevertheless, further research involving bioactive component isolation, elucidation of mechanistic pathways, safety profiling, and in-vivo investigations is essential to progress toward clinical applicability.

 

5. CONCLUSION:

The present investigation confirmed that the ethanolic extracts of Saraca indica and Ocimum sanctum display strong in-vitro anthelmintic activity against Pheretima posthuma, surpassing the effectiveness of the reference drug albendazole. GC-MS analysis verified the presence of numerous biologically active constituents likely contributing to the observed therapeutic action. Consequently, these medicinal plants show significant potential for phytopharmaceutical development and could serve as safe, natural, and efficient candidates for the formulation of new anthelmintic therapies.

 

6. ABBREVIATIONS:

GC-MS: Gas Chromatography- Mass Spectrometry

OS: Ocimum sanctum

SI: Saraca indica

RT: Retention Time

ANOVA: Analysis of Variance

SEM: Standard Error of Mean

NIST: National Institute of Standards and Technology.

EI: Electron Ionization

TIC: Total Ion Chromatogram

 

7. ACKNOWLEDGMENT:

The authors of this article would like to express their gratitude to Dr. B. A. Vishwanath, Chairman of the Aditya Group of Institutions, Yelahanka, Bengaluru, for giving me access to use the college's research facilities and for providing me with the materials required.

 

8. CONFLICT OF INTEREST:

The authors declare that there is no conflict of interest.

 

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Received on 20.01.2026      Revised on 16.02.2026

Accepted on 10.03.2026      Published on 04.07.2026

Available online from July 18, 2026

Asian J. Pharm. Tech. 2026; 16(3):235-240.

DOI: 10.52711/2231-5713.2026.00033

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