Preliminary phytochemical analysis of Commiphora wightii
Table 1 shows the findings of preliminary phytochemicals analysis of methanol extract of
C.
wightii. Alkaloids, Glycosides, Steroids, Tannins, Saponins, Carbohydrates and Flavonoids were identified.
Compared to aqueous and ethanol extracts, methanol extracts contained higher phytochemical components
(Ahmad et al., 2015). Because the methanol extract has the maximum number of phytochemical elements, it is used in subsequent research.
Antibacterial activity against Commiphora wightii
Based on the results, the antimicrobial activity of the methanolic extract exhibited highest inhibition zone against
S.
aureus (19.3±0.5 mm),
C.
Albicans (17.6±0.52 mm) and
E.
faecalis (16.0±1.24 mm). Inhibition zones developed against gram-negative pathogen were 17.0±0.81 mm in
K.
pneumonia, l5.33±0.94 mm in
E.
coli and 11.0±1.00 mm in
P.
aeruginosa. Compared to gram-negative pathogens, the methanol extract efficiently inhibited gram-positive bacteria. The methanolic extract inhibited both bacteria more effectively than the other ethanolic and aqueous extracts. Except for
P.
aeruginosa and
K.
pneumoniae, the aqueous extract inhibited both strains more efficiently than ethanol extract (Table 2). As a result, the Ethanolic extract displayed the lowest zone of inhibition.
Fourier transform infrared spectroscopic analysis
Fig 1 based on the peak values which is shown in FTIR graph, the functional group of methanolic extracts of
C.
wightii was confirmed. The presence of 2947.67, 2841.80, 2522.50, 2046.06, 1647.50, 1454.65, 1412.89, 1021.23, 1111.54, 691.28 and 3402.54 was confirmed by FTIR analysis. At 3402.54 cm
-1, major peaks could be assigned to -OH symmetric and asymmetric stretching. As a result of the findings of this investigation, the functional group found in
C.
wightii is O-H symmetric. Fig 1 depicts the other functional groups found in
C.
wightii methanol extracts.
Gas chromatography-mass spectroscopy analysis
According to GC-MS analysis, bioactive mixtures were recognised in the methanolic extract of
C.
wightii and the Graph showing the peak identities of the compound is presented in (Fig 2).
Molecular Formula (MF), Retention Time (RT), Concentration (%), Molecular Weight (MW), are presented in (Table 3) Fifty-two compounds were identified in this extract.
The appearance of prominent peaks, as well as the components that correlate to them, were determined. The results revealed that Pregna-4,16-diene-3,20-dione (29.02 percentage) and Cyclohexanol, 3-ethenyl-3-methyl-2-(1-methylethenyl)-6-(12.62 percentage) was found as the major component is the methanol extract. The bioactive component in the methanolic extracts of
C.
wightii needs to be further investigated to discover a novel antibacterial agent in the fight against global antimicrobial resistance.
As UTI continues to affect our ever-growing population, emerging countries are unable to cope with allopathy medicine because to its long-term effects on the human body. According to WHO studies, antimicrobial resistance (AMR) is a public health hazard that impacts a wide range of infectious organisms. It is a severe concern for countries and various industries
(Suroowan et al., 2019;
World Health Organization, 2017). However, evaluating the obtained results are difficult because of the different solvents methods, extraction, microbial pathogens and antimicrobial tests. Aqueous is the most common solvent used by local indigenous people, while other organic solvents are also available. Alkaloids, flavonoids, glycosides, Tannins, saponins and steroids were found in a methanol extract of
Commiphora wightii. Methanol, Ethanol and the aqueous extract of
C.
wightii contain no carbohydrates. Alkaloid has antidiarrheal, anti-inflammatory, anticancer and anti-diabetic properties and the ability to cure urinary diseases
(Singh et al., 2016). Flavonoids, commonly known as vitamins, have a variety of therapeutic qualities, including antihypertensive, anti-rheumatism, antidiuretic, antioxidant, antibacterial and anticancer effects
(Singh et al., 2016). Glycosides and steroids have antimicrobial properties and can help to fight bacterial infections, including UTIs. Steroids can reduce inflammation and swelling in the urinary tract, which can relieve the symptoms of a UTI. The presence of tannin and saponins compound have been shown to potential therapeutic activities in plants for the treatments of various diseases
(Al-Bayati et al., 2008). Saponins have exhibited a broad spectrum of physiological actions, including anthelminthic and antibacterial capabilities in the past
(Banothu et al., 2017). Phenols have been shown to inhibit the growth of bacteria associated with UTIs
(Mohan et al., 2017). This study revealed the presence of these bioactive components in
C.
wightii methanolic extracts. As a result, the use of this plant in traditional medicinal systems is consistent with the findings of previous researchers.
The antimicrobial activity of herbal plant extracts against various infections has already been documented in the literature based on ethnobotanical data. However, evaluating the obtained results are difficult because of the different solvents methods, extraction, microbial pathogens and antimicrobial tests. Antimicrobial activity of
Commiphora wightii extracts (ethanol, aqueous and methanol) were tested against selected pathogens in this study. Methanolic extracts of
C.
wightii had the best activity against all pathogens tested, with
E.
coli, S.
aureus and Candida albicans having the most significant inhibition zones.
By comparing their respective controls, the activities of the zone of inhibition values can be used to estimate the potential of antibacterial activities. Plant extracts containing chemicals with antibacterial properties effectively treat bacterial and fungal diseases
(Yabesh et al., 2018). Tribullus terrestris showed similar antibacterial activity against UTI pathogens
(Arulmozhi et al., 2018). Similarly,
Capparis zealanica methanol extracts were also tested for antibacterial activity against
Escherichia coli,
Streptococcus faecalis, Staphylococcus aureus, Klebsiella pneumoniae and
Pseudomonas aeruginosa (Yasin et al., 2015).
The results of this present study coincide with the results of these researchers, because methanolic extract of
C.
wightii was effective against UTI pathogens, such as
Escherichia coli and
Staphylococcus aureus. As a result, natural antibacterial agents such as methanolic and aqueous extracts can be used to prevent the infection of these pathogens.
The -OH symmetric and asymmetric stretching was showed by a broad peak in the range of 3402 cm
-1 in the FTIR spectra of
C.
wightii fruits extract
(Guunzler and Gremlich, 2002). Sharpe peak at 2947 cm
-1 indicates -CH
2, -CH
3 (Wei et al., 2009), peak at 2841 cm
-1 indicates lipids
(Wei et al., 2009). peak value at 2522 cm
-1 indicates S-H stretching, 2046 cm
-1 indicates N=C=S stretching, 1647 cm
-1 indicates á-helix protein
(Heimburg et al., 1999). 1454 cm
-1 indicates Various ä (C-H) modes
(Kamnev et al., 2008). The presence of Ionic Phosphate for the peak value of 1412 cm
-1 (Chauhan et al., 2008). The presence of Polyester overlap carbohydrate, various C-O-C and C-C-O vibration results in a value of 1111 cm
-1 (Kamnev et al., 2008). The presence of C-O stretching accounts for the peak value of 1021 cm
-1. 691 cm
-1 is due to presence of C-Br stretching.
C.
wightii main chemical constituent is aldehydes, amine, acid, carbohydrates and halides functional groups which is used as a pharmaceutical product to treat ulcers, stomatitis, fever, liver ache, edema and rheumatic joint problems. The extract is also rich in alkanes, alcohols and aromatics, all of which have therapeutic potential. As a result, it has a high medicinal value
(Ragavendran et al., 2011).
GC-MS is a technology that is used to identify Phyto-compounds
(Shibula et al., 2015). GC-MS has identified fifty-two compounds from the methanolic fruit extract of
C.
wightii in this study. Pregna-4, 16-diene-3, 20-dione (29.02%) compound that was detected a retention time antioxidant, anti-inflammatory properties
(Bhatia et al., 2015). Cyclohexanol, 3-ethenyl-3-methyl-2-(1-methylethenyl)-6-(12.63%) that possesses, antioxidant, antifungal and antimicrobial activities
(Perveen et al., 2018).