Antibacterial Activity Test Research Articles

Identification and Antibacterial Activity Study of a Terrestrial Strain of Brevibacterium aureus 431

This study isolated and purified strain 431 from an animal probiotic product. Through staining and microscopic examination, colony morphology analysis, biochemical reaction tests, and 16S rDNA sequence alignment, the strain was identified and named Brevibacterium aureus 431. The study focused on the production of biosurfactants by strain 431, and antibacterial activity tests were conducted on the strain and its secondary metabolites. The results showed that strain 431 exhibited no resistance to 10 commonly used drugs, and its concentrated secondary metabolites were highly sensitive to the indicator bacterium Escherichia coli. Oral administration of strain 431 to BALB/c mice resulted in normal mental state, diet, and bowel movements, with no signs of illness or death, indicating that strain 431 is highly safe and non-pathogenic to mice. The study suggests that Brevibacterium aureus 431 has significant research value as a new source of actinomycetes and that its secondary metabolites have potential application value in the development of antibacterial drugs.

Synthesis, structural study, antimicrobial activity and theoretical treatment of Cr(III), Ni(II), Pt(IV) and Zn(II) complexes with 2-hydroxy-4-Nitro phenyl piperonalidene

The complexes of the 2-hydroxy-4-Nitro phenyl piperonalidene with metal ions Cr(III), Ni(II), Pt(IV) and Zn(II) were prepared in ethanolic solution. These complexes were characterized by spectroscopic methods, conductivity, metal analyses and magnetic moment measurements. The nature of the complexes formed in ethanolic solution was study following the molar ratio method. From the spectral studies, monomer structures proposed for the nickel (II) and Zinc (II) complexes while dimeric structures for the chromium (III) and platinum (IV) were proposed. Octahedral geometry was suggested for all prepared complexes except zinc (II) has tetrahedral geometry, Structural geometries of these compounds were also suggested in gas phase by using hyper chem-8 program for the molecular mechanics and semi-empirical calculations. The heat of formation and binding energy for the prepared compounds was calculated by using PM3 and AMBER methods. The method of PM3 was used for evaluate the vibration spectra for the imine and starting material as authentic compound. Preliminary in vitro tests for antibacterial and antifungal activity show that most of the prepared compounds display good activity to (Staphylococcus aureus), (Escherichia coli) and (Candida albicans).

Utilization of Local Wisdom of Antanan (Centella Asiatica) and Badotan (Ageratum Conyzoides L.) Plants for Anti-bacterial Edible Film of Pumpkin Seeds

Edible film is a thin layer made from consumable materials, formed on top of or placed between food components, functioning as a barrier to mass transfer such as moisture, oxygen, and solutes. It is made from edible biopolymers and food-grade additives. The development of edible film packaging in this study was carried out by utilizing pumpkin skin and seeds that have not been adequately used and by exploring the addition of natural antimicrobial compounds, namely antanan and badotan, to enhance the inhibitory effect of edible films made from pumpkin seeds that meet food standards.In this study, the extraction of yellow pumpkin seeds, antanan, and badotan was performed, followed by organoleptic and phytochemical tests. An edible film formulation was made from yellow pumpkin seeds, varied with antanan and badotan, and tested for moisture content, solubility, pH, and antibacterial properties. The characteristic test results showed that the badotan leaf simplicia was dark green, with a bitter taste and an astringent aromatic odor typical of badotan. The extract was blackish-green in color, with an aromatic odor typical of badotan, and a very bitter taste. Antanan leaf simplicia had a typical aromatic odor, an astringent taste, and was solid green in color. The antanan leaf extract had a typical antanan odor, a very bitter taste, and was thick green in color. Pumpkin seed simplicia had a typical pumpkin smell, an astringent taste, and was thick green in color. The pumpkin seed extract had a smell of ethanol solvent, a bitter taste, and was brownish-green and in the form of a thick liquid. The potential bioactive compounds in badotan leaves included alkaloids, steroids, phenolics, and saponins. Antanan leaves and pumpkin seeds contained flavonoids, alkaloids, steroids, phenolics, and saponins. The results showed that the edible film formulation of pumpkin seeds combined with badotan and antanan (1:2) appeared tighter and smoother and did not break. The formulation of pumpkin seeds and badotan (1:2) had a moisture content of 0.0380%, a solubility content of 0.2075%, and a pH of 5.8. The pumpkin seed and antanan (1:2) formulation had a moisture content of 0.0732%, a solubility content of 5.7269%, and a pH of 5.8. The edible film antibacterial activity test against Staphylococcus aureus used the disc diffusion method and obtained an inhibition zone of 1.8 mm for pumpkin seed edible film, 12.4 mm for pumpkin seed (1:2) edible film, and 17.6 mm for pumpkin seed (1:2) edible film.

Analysing the Bioactive Compound of Earthworm Pheretima Javanica Extract by Using Gas Chromatography Mass Spectrum

Research Based Learning (RBL) is a learning method that uses contextual learning, authentic learning, problem solving, cooperative learning, hands on and minds on learning and inquiry learning. The STEM approach in learning is expected to provide meaning to students through the systematic integration of research-based knowledge, concepts and skills. STEM design begin with the identification of social problems. The social issue of typhoid fever cases caused by Salmonella enterica Typhi bacteria with a high mortality rate in the world is a public health problem. The existence of Pheretima javanica which is abundant in the environment can be utilized by conducting antibacterial activity testing and analysis of bioactive compounds by students on the form of the extract. This research is a development research carried out with the aim of developing a product and also a qualitative descriptive research which serves to provide an overview of the object. The steps in carrying out these tests were identified as part of learning that hone creative thinking skills. The results of the class experimental research showed that the N-Gain score was 0.8, which is in the high category. These results show that the application of developing problem-based learning tools with a STEM approach is effective. Learning outcomes contribute to the effort to find alternative drugs that are effective and do not cause resistance. In addition, students also produce scientific articles as learning products. This paper has implications for STEM integrated research-based learning.

Electrosynthesis of Anisotropic Biogenic Silver Nanoparticles as A Promising Antibacterial Agent Using Stachytarpheta Jamaicensis Leaf Extract

Antibiotic-resistant bacteria provide a great opportunity to use silver nanoparticles (AgNPs) as potential antibiotic replacements. This work utilized Stachytarpheta jamaicensis leaf extract (SJLE)-mediated electrosynthesis of biogenic AgNPs. By using two silver rods and SJLE as the electrolysis medium, biogenic AgNP is produced through electrosynthesis. The properties of the formed AgNPs and SJLE phytochemical composition were examined. The disc diffusion method was utilized to evaluate AgNPs' antibacterial efficacy against Escherichia coli and Staphylococcus aureus. The high amount of phenolics, flavonoids, and tannins in SLJE provides biomolecules rich in -OH and carbonyl groups, allowing SLJE to have antimicrobial effects as well as act as a capping agent and bioreductor during electrosynthesis. The presence of functional groups from various phytochemicals leads to the formation of anisotropic AgNP crystals with a size of 38.22 ± 13.06 nm and high purity (95.75 ± 0.43%). Antibacterial activity tests against E. coli and S. aureus show that anisotropic biogenic AgNPs outperformed spherical AgNPs, probably due to the angular AgNPs' ease of penetration into bacterial cell walls. The characteristics of the AgNPs developed induced outstanding antibacterial efficacy against E. coli and S. aureus. Thus, SLJE-based electrosynthesis provides a synergistic synthetic design of AgNPs as antibacterial agents with several potential long-term advantages, including high purity, fast synthesis, low cost, absence of hazardous ingredients, and simplicity in scaling up.

Development of Poly(lactic acid)-Based Biocomposites with Silver Nanoparticles and Investigation of Their Characteristics

Nowadays, the demand for food packaging that maintains the safety and quality of products has become one of the leading challenges. It can be solved by developing functional materials based on biodegradable polymers, such as poly(lactic acid) (PLA). In order to develop PLA-based functional materials with antibacterial activity, silver nanoparticles (AgNPs) were introduced. In the present study, AgNPs stabilized by a copolymer of ethylene and maleic acid were used. Under the joint action of shear deformations and high temperature, the biocomposites of PLA with poly(ethylene glycol) and AgNPs were produced. Their mechanical and thermal characteristics, water absorption, and structure were investigated using modern methods (DSC, FTIR, Raman spectroscopy, SEM). The effect of AgNP concentration on the characteristics of PLA-based biocomposites was detected. Based on the results of antibacterial activity tests (against Gram-positive and Gram-negative bacteria, along with yeast) it is assumed that these systems have potential as materials for extending the storage of food products. At the same time, PLA–PEG biocomposites with AgNPs possess biodegradability.

Cryptophytes as potential source of natural antimicrobials for food preservation.

Cryptophytes are a promising source of bioactive compounds that have not been fully explored. This research investigated the antimicrobial activity of total phenolic compounds (TPC) and exopolysaccharides (EPS) extracted from several cryptophytes against a range of harmful foodborne bacteria and fungi. To measure the minimum inhibitory concentration (MIC) value, the broth microdilution method was used. In the antibacterial evaluation of TPC, the MIC ranged between 31.25 and 500 μg/mL, while for the antifungal activity test, it varied from 31.25 to 125 μg/mL. In the antibacterial activity test of EPS, the MIC values ranged from 125 to 1,000 μg/mL, whereas in the antifungal susceptibility test, it ranged between 62.5 and 1,000 μg/mL. The most resistant pathogen against TPC was Escherichia coli, while Campylobacter jejuni was the most susceptible. In the case of EPS, the most resistant pathogen was Salmonella Typhimurium, while Aspergillus versicolor exhibited the highest susceptibility. Overall, in terms of antimicrobial activity, TPC was more effective than EPS. Finally, the tolerance level (TL) for TPC and EPS was ≤4 in all tested samples, indicating their bactericidal/fungicidal mechanism of action. In conclusion, TPC and EPS isolated from cryptophytes demonstrated remarkable antimicrobial properties and ability to fully eradicate pathogens, and could be considered as natural preservatives in the food industry.

Metabolit Sekunder dan Aktivitas Antibakteri Ekstrak Metanol Daun Kamboja Putih (Plumeria acuminata Ait) Terhadap Beberapa Bakteri Uji

Kamboja (Plumeria acuminata Ait) plant is traditional medicine used as medication for ulcer and abscess. Steroid and tanin is component of chemical compound in kamboja leaves that supposed to have antibacterial activity. This study aims to determine the content of secondary metabolites and effective concentration of methanol extracts of kamboja leaves as antibacterial. Identification contains of secondary metabolites by used reagent Mayer, Dragendorf, Liebermann-Burchard, FeCl, Mg powder and HCl. Analysis of secondary metabolites characterized by the presence of sediment or froth. The antibacterial activity test carried out by agar diffusion method. Inhibition zone is analyzed by Anava and Duncan test. Secondary metabolite the compound containing steroid and tanin. The effective concentration of 40% were significantly different with a value of p = 0.00 (p<0.05) on the growth of Streptococcus mutans and Staphylococcus aureus bacteria and a concentration of 30% is very significantly different from the value of p = 0.00 (p<0.05) on the growth of Escherichia coli bacteria in vitro.

Novel Drug-like HsrA Inhibitors Exhibit Potent Narrow-Spectrum Antimicrobial Activities against Helicobacter pylori.

Helicobacter pylori infection constitutes a silent pandemic of global concern. In the last decades, the alarming increase in multidrug resistance evolved by this pathogen has led to a marked drop in the eradication rates of traditional therapies worldwide. By using a high-throughput screening strategy, in combination with in vitro DNA binding assays and antibacterial activity testing, we identified a battery of novel drug-like HsrA inhibitors with MIC values ranging from 0.031 to 4 mg/L against several antibiotic-resistant strains of H. pylori, and minor effects against both Gram-negative and Gram-positive species of human microbiota. The most potent anti-H. pylori candidate demonstrated a high therapeutic index, an additive effect in combination with metronidazole and clarithromycin as well as a strong antimicrobial action against Campylobacter jejuni, another clinically relevant pathogen of phylum Campylobacterota. Transcriptomic analysis suggests that the in vivo inhibition of HsrA triggers lethal global disturbances in H. pylori physiology including the arrest of protein biosynthesis, malfunction of respiratory chain, detriment in ATP generation, and oxidative stress. The novel drug-like HsrA inhibitors described here constitute valuable candidates to a new family of narrow-spectrum antibiotics that allow overcoming the current resistome, protecting from dysbiosis, and increasing therapeutic options for novel personalized treatments against H. pylori.

Uji Aktivitas Antibakteri Ekstrak, Fraksi Air, Fraksi Etil Asetat, Fraksi n-Heksan Daun Petai Cina (Leucaena leucocephala) Terhadap Bakteri Staphylococcus aureus ATCC 25923

Shina, mai., 2024, test of antibacterial activity of extract, water fraction, ethyl acetate fraction, and n-hexane fraction of chinese petai leaf (leuncaena leucocephala) against staphylococcus aureus atcc 25923, thesis, faculty of health sciences, duta bangsa university, surakarta one of the traditional medicines that currently has the potential to be developed is the chinese petai plant (leucaena leucocephala). Chinese petai leaves are used by the people of indonesia as a remedy for new and swollen wounds. Staphylococcus aureus is a gram-positive coccus bacterium that is the main pathogen in humans. Almost everyone has experienced a wide variety of staphylococcus aureus infections during their lifetime, from severe food poisoning to minor skin infections. The methods used in this study are diffusion and dilution. The purpose of this study was to determine the antibacterial activity of water extracts and fractions, ethyl acetate fractions, and n-hexane fractions of chinese petai leaves (leuncaena leucocephala), to find the most active extracts and fractions based on their inhibitory zones, and to determine the khm and kbm of the most active extracts against staphylococcus aureus atcc 25923. Based on research conducted on ethanol extract, water fraction, ethyl acetate fraction, and n-hexane fraction of chinese petai leaves have antibacterial activity against staphylococcus aureus atcc 25923. The most active extract in inhibiting staphylococcus aures atcc 25923 judging from its inhibition zone value is ethanol extract. Ethanol extract of chinese petai leaves has the same khm and kbm values, namely at a concentration of 25%.

Fraction Activities Rosella Flower (Hibiscus Sabdariffa L) as an Antibacterial and Antibiofilm Escherichia Coli ATCC 25922

Rosella flowers (Hibiscus sabdariffa L) contain alkaloid, flavonoid, saponin and tannin compounds. The compounds contained in rosella flowers have activity as antibacterial and antibiofilm. Biofilm is the ability of microorganisms that stick to the surface of objects and form a matrix. This study aims to antibacterial and biofilm activity in the form of inhibition of biofilm formation and biofilm degradation of E.coli bacteria. Rosella flowers were extracted using maceration method with 96% ethanol solvent. The thick extract was then fractionated with n-hexane, ethyl acetate and water solvents. Antibacterial activity test using diffusion and dilution methods followed by observation of cell wall and membrane damage using SEM and ion leakage with AAS. Biofilm activity test was conducted using a microplate device and readings were taken at a wavelength of 595 nm. The absorbance results of the inhibition percentage to determine the IC50 and EC50 values. The average IC50 values of biofilm formation inhibition test on extract, n-hexane fraction, ethyl acetate fraction and water fraction against E. coli bacteria are 1.059; 1.070; 0.921; 0.863. The EC50 values of biofilm degradation test on extract, n-hexane fraction, ethyl The minimum killing concentration value of rosella flower water fraction against E. coli is 25 mg/ml. the effect of the active fraction of rosella flower on E. coli bacteria is on the cell wall and cell membrane

Antibacterial Activity Test of Sumbawa White Honey against Escherichia coli ATCC 25922

Due to their high mortality and morbidity rates, E. coli infections are a serious issue. Antimicrobial Resistance (AMR) is a result of this indiscriminate antibiotic use. One approach to address this issue is to utilize natural antimicrobials such as Sumbawa white honey. Sumbawa white honey contains antibacterial components like glucose and fructose (80%), water (17%), polyphenols, and hydrogen peroxide. This study aimed to analyze the antibacterial activity of white honey from Sumbawa against E. coli ATCC 25922. The research method employed was a laboratory experiment using a post test only control group design. Antibacterial testing was conducted using disc diffusion at concentrations of 25%, 75%, and 100%, with chloramphenicol as positive control and DMSO as negative control, and honey processing involved dilution. Antibacterial tests were repeated five times and antibacterial activity was observed based on the diameter of inhibition zones around the disc. The outcomes showed that there was a restraint zone at 100 percent grouping of honey, to be specific 0.90 mm, while at 25% and 75% fixations there were no hindrance zones. According to the findings of this study, white honey from Sumbawa has a low antibacterial activity (0.90 mm), but this activity is ineffective against E. coli ATCC 25922. Further identification of the chemical components in Sumbawa white honey that are primarily responsible its antibacterial effect.

Formulasi Sabun Cair Berbahan Baku Virgin Coconut Oil VCO dengan Penambahan Ekstrak Daun Pepaya Carica Papaya L. untuk Peningkatan Aktivitas Anti Bakteri Staphylococcus Epidermidis ATCC 12238

Acne is a chronic inflammatory disease caused by Staphylococcus epidermidis. Papaya leaves (Carica papaya L.) contain antibacterial substances, namely alkaloids carpaine, flavonoids, tocophenols. Of this study was to determine the physical quality of liquid soap, increasing antibacterial activity. Papaya leaves were extracted with 96% ethanol solvent, then evaporated with a water bath. Antibacterial activity test using the disc diffusion method in concentrations of 5%, 15% and 25% and liquid soap will be made F0 0%, F1 5%, F2 10%, and F3 25% against Staphylococcus epidermidis ATCC 12238. Amoxicillin tab as a positive control and distilled water as a negative control. Bacterial activity appears a clear zone around the disc paper. And see the physical quality test according to the requirements. The results of the bacterial test data are made in table form, and analyzed using the SPSS method Formula with the addition of papaya leaf extract can be made and according to the physical quality conditions of liquid soap. The results of the 25% concentration extract test are an inhibition zone of 20.8 mm, the highest liquid soap formula is an inhibition zone of 23.8 mm in inhibiting the growth of Staphylococcus epidermidis ATCC 12238. Liquid soap preparations and papaya leaf extract have antibacterial activity against Staphylococcus epidermidis ATCC 12238 bacteria and according to the physical quality requirements of liquid soap.

The antibacterial activity test of salt gel face mask with chitosan extract against propionibacterium acnes and staphylococcus aureus bacteria as antiacne preparations

Abstract Salt is a collection of chemical compounds with the main content in the form of NaCl. The mineral content in salt provides health functions for the body, one of which is acne. Salt gel face mask with chitosan extract has the potential to be used as an antibacterial (antiacne) preparation. The purpose of this study was to determine the effective antibacterial activity and concentration of salt used as an antiacne preparation against Propionibacterium acnes and Staphylococcus aureus bacteria in salt gel face masks. The research method used was a laboratory scale experimental method with a completely randomized design (CRD) consisting of 5 treatments and 4 repetitions. The treatment consists of a gel face mask with the addition of a salt concentration of 0%, 10%, 15%, 20% and 25%. The main parameters of this study were antibacterial activity, while the supporting parameters included pH, homogeneity, viscosity, organoleptic and SEM-EDX analysis. The results showed that the addition of different salt concentrations to the salt gel face mask had an effect on the antibacterial activity of the salt gel face mask. The best formulation is in the F4 treatment with a salt concentration of 25%.

Ethnomedical Study of Traditional Medicinal Plants for Cough and Tuberculosis (TB) of the Helong Tribe on Semau Island, Kupang Regency, East Nusa Tenggara

The Helong people in Kupang Regency, NTT Province, have experienced being exposed to cough and tuberculosis (TB). Therefore, it is believed that this community has also long since developed their local knowledge and traditional ways to prevent and treat the disease. In general, this study aims to analyze and find the concept of the Helong Tribe community and ethnomedical practices for the prevention and treatment of cough and tuberculosis (TB). This research is a medical anthropology research using a qualitative research method with an ethnographic approach, which is supported by laboratory research and literature studies. Field research was carried out on Semau Island, NTT Province, involving traditional medicine. The results of the research conducted in the form of interviews with traditional medicine practitioners in the Helong tribe obtained as many as 31 plants used in treatment, and there were 3 plants used to treat cough, including hemorrhagic cough/tuberculosis, namely plants: white banyan (Ficus benjamina L), mesocarp palm fruit (Borassus flabellifer L.) and white flower (Clerodendrum costatum R.Br). The three plants that are suspected to have the ability to treat cough and cough up blood carried out preliminary tests of antibacterial activity against bacteria that generally cause stones, namely Staphylococcus aureus bacteria. The results obtained for ethanol extract of white banyan leaves (Ficus benjamina L) with a concentration of 25% b/v with a diameter of 16.53 mm, 50% b/v with a diameter of 16.33 mm, and 75% b/v with a diameter of 16.56 mm. Mesocarp ethanol extract of palm fruit (Borassus flabellifer L.) At a concentration of 25% b/v with an inhibitory zone diameter of 11.60 mm, a concentration of 50% b/v with an inhibitory zone diameter of 12.30 mm, a concentration of 75% b/v with an inhibitory zone diameter of 13.40 mm, for white flowers (Clerodendrum costatum R.Br) at a concentration of 25%b/v with an inhibitory zone diameter of 9.41 mm, a concentration of 50% b/v of 10.36 mm and a concentration of 75% b/v of 11.24 mm. This means that the three plants have antibacterial activity against Staphylococcus aureus bacteria. Furthermore, for the antibacterial activity test against Mycobacterium tuberculosis bacteria for white banyan plants (Ficus benjamina L.), mesocarp of palm fruit (Borassus flabellifer L.), and white flowers (Clerodendrum costatum R.Br) by the MODS (Microscopically Observed Drug Susceptibility) method, it was obtained that the three plants at concentrations of 250 ppm, 500 ppm, and 1000 ppm were only seen to have the growth of Micobacterium tuberculosis bacteria in the second week. Passive control with INH observation until week IV did not see any bacterial growth, while for negative control in the first week, the growth of Mycobacterium tuberculosis bacteria was seen. It can be concluded that a concentration greater than 1000 ppm is needed for the three plants to inhibit the growth of Mycobacterium tuberculosis bacteria.

Potential of Erythrosine-Mediated Photodynamic Therapy as a Cavity Disinfectant: Antibacterial Efficacy and Bonding Ability

This study aimed to evaluate the antibacterial efficacy of erythrosine-mediated photodynamic therapy (PDT) against <i>Streptococcus mutans</i> (<i>S. mutans</i>) in dentin and its effect on the shear bond strength (SBS) of composite resin to dentin. Eighty extracted human noncarious premolars were used in this study. Forty teeth were used for the antibacterial activity test, while the remaining 40 were used for the SBS test. Both experiments were conducted with 4 experimental groups (n = 10): control (distilled water), sodium hypochlorite (NaOCl, 6%), chlorhexidine (CHX, 0.12%), and erythrosine-mediated PDT. Antibacterial effects were evaluated by counting <i>S. mutans</i> colony-forming units (CFUs). The SBS of composite resins to dentin was measured using a universal testing machine. All treatments (NaOCl, CHX, and PDT) demonstrated statistically significant differences in antibacterial activity compared with the control group (<i>p</i> < 0.05). The antibacterial effects were ranked from strongest to weakest as follows: NaOCl, PDT, and CHX. In the SBS test, the NaOCl group exhibited a statistically significant difference compared with the CHX, PDT, and control groups (<i>p</i> < 0.05), with the lowest bond strength. No statistically significant differences were found among the CHX, PDT, and control groups (<i>p</i> > 0.05). Erythrosine-mediated PDT exhibited significant antibacterial effects against <i>S. mutans</i>, with higher antibacterial activity than CHX but lower than NaOCl. Only NaOCl negatively affected the bond strength of composite resin to dentin. In conclusion, erythrosine-mediated PDT shows potential as a cavity disinfectant due to its significant antibacterial effects against <i>S. mutans</i> and lack of adverse effects on bond strength.

Comparative Analysis of Essential Oil Profiles From Emprit Ginger Rhizome (Zingiber officinale var. amarum) Grown in Different Locations and Antibacterial Activity Againts Staphylococcus aureus

Indonesia, as a tropical country, boasts significant biodiversity, particularly regarding its flora and fauna. The country's medicinal plants are one inherited natural resource passed down through generations. The "emprit ginger” (Zingiber officinale var. amarum), a native Indonesian medicinal plant, is often employed in treating various diseases. Scientifically, the primary constituent of emprit ginger is the phenolic ketone homolog compound, gingerol, known for its antioxidant activity. In addition to its antioxidant potential, emprit ginger exhibits potential as an antibacterial agent. However, herbal substances used for therapeutic purposes often yield inconsistent effects due to the fluctuating chemical composition in the plants, typically a result of varying growing locations. These location differences can cause discrepancies in the content of active metabolites. Therefore, data on the chemical profile of medicinal plants is paramount for the standardization process. This study was conducted by obtaining essential oils from the rhizomes of emprit ginger, extracted via steam distillation obtained from various cultivation lands in Ponorogo, Magetan, Pacitan, Wonogiri, Karanganyar, Boyolali, Semarang, Magelang, Purworejo, Temanggung, Wonosobo, Banyumas, Bantul, and Kulonprogo. One of the efforts in standardizing natural materials involves the analysis of their metabolite profiles. The emprit ginger essential oil profile was obtained through Gas Chromatography-Mass Spectrometry (GCMS) testing. The emprit ginger essential oil profile was analyzed using a multivariate calibration of Principal Component Analysis utilizing SIMCA 17 software. Antibacterial activities were assessed using the microdilution method on Staphylococcus aureus bacteria. The analysis of antibacterial activity was determined using the Probit analysis method to ascertain the Minimum Inhibitory Concentration (MIC) 50 value. This study also involved the extraction of essential oils from emprit ginger rhizomes. The individual profiles of these essential oils were determined via Gas Chromatography Mass Spectrometry. The essential oil profiles of emprit ginger were subjected to a multivariate calibration using Principal Component Analysis facilitated by the SIMCA 17 software. Antibacterial activity tests were conducted using the microdilution method on Staphylococcus aureus bacteria. The antibacterial activity was ascertained using probit analysis to derive the Minimum Inhibitory Concentration 50 (MIC 50) values. The highest MIC 50 of emprit ginger rhizome on Staphylococcus aureus bacteria was found in samples from Wonogiri, with a concentration of 0.3408%. Compounds displaying significant discriminative influence on Staphylococcus aureus bacteria included Z-Citral, Geranyl acetate, Zingiberenol, Beta-Myrcene, (1S0-2,6,6-Trimethylbicyclo [3.1.1] hept-2-ene, and Bicyclo [2.2.1]heptan-2-ol, 1,7,7-trimethyl, exo-(CAS)

Comparison of phenolic total ethanol extract of 70% and 96% carrot leaves and antibacterial activity test against Staphylococcus aureus

Carrots (Daucus carota L.) are a plant that is widely used by the community, especially the tubers, while the leaves are not widely used and are only used as waste or animal feed. Carrot leaves contain secondary metabolites such as phenols, flavonoids, tannins, saponins, alkaloids, and steroids. Phenolic compounds are secondary metabolite compounds that are most abundant in nature. This compound can be used in the pharmaceutical world as an alternative treatment from natural ingredients, one of which is as an antibacterial. Staphylococcus aureus bacteria can cause skin infections such as boils. If it enters the bloodstream, it can cause meningitis or lung infections. This study aims to determine the total phenolic content in carrot leaves extracted with 70% and 96% ethanol solvents and to determine their antibacterial activity against Staphylococcus aureus. Carrot leaf extract is obtained by the maceration method. Total phenolic content was calculated using the Follin-Ciocalteau method. The antibacterial activity test was carried out using an excellent method. The research results showed that the yield of 70% ethanol extract was 17.235% and 96% ethanol extract was 16.053%. The results of testing the phenolic content of 70% ethanol extract of carrot leaves were 44.586 mgGAE/g and the phenolic content of 96% ethanol extract was 34.939 mgGAE/g. The results of the antibacterial activity test of 70% ethanol extract of carrot leaves had an average measurement of the inhibition zone at concentrations of 20%, 30% and 40%, namely 0.175 cm, 0.226 cm and 0.274 cm.

Article Review: Potential use of Andaliman Fruit as an Antibacterial

This research examines the potential of andaliman fruit (Zanthoxylum acanthopodium) as an antibacterial agent. Andaliman fruit is known to contain bioactive compounds such as alkaloids, flavonoids and saponins which have the potential to inhibit the growth of pathogenic bacteria. The antibacterial activity test was carried out using the agar diffusion method against several test bacteria, including Escherichia coli and Staphylococcus aureus. The results showed that andaliman fruit extract had significant antibacterial activity, indicated by the inhibition zone formed around the extract impregnation disc. The highest activity was noted against Staphylococcus aureus, which is a gram-positive bacterium. These findings indicate that andaliman fruit has the potential to be developed as an effective natural antibacterial agent. Further research is needed to identify the specific active compound and its antibacterial mechanism of action.

FORMULATION AND ANTIBACTERIAL ACTIVITY TEST OF THE PREPARATION CROWN ETHANOL EXTRACT SHOWER GEL PINEAPPLE (Apineapple comosus (L.) Merr) AGAINST BACTERIA Staphylococcus aureus

Antibacterial bath soap is in great demand by the public. This is because it is believed to cleanse the skin and can also treat or prevent diseases caused by bacteria. One of the natural ingredients that are efficacious as a natural anti-bacterial is pineapple crown. Pineapple crown extract has secondary metabolites namely alkaloids, flavonoids, tannins, saponins and triterpenoids/steroids. The purpose of this study was to determine the formulation of liquid bath soap preparations with the use of pineapple crown ethanol extract (ananas comosus (l.) Merr) as liquid bath soap and to determine the potential of pineapple crown ethanol extract liquid bath soap (ananas comosus (l.) Merr) to have antibacterial properties against staphylococcus aureus bacteria. The type of research carried out is an experimental method. The work procedure consists of sample preparation, sample identification, simplisia making, characteristic examination, phytochemical screening, extract making, making liquid shower soap preparations, evaluating liquid shower soap preparations and antibacterial activity tests against staphylococcus aureus bacteria. Pineapple crown ethanol extract is formulated in a shower soap preparation whose formulation uses concentrations of 3%, 5% and 7%. The results of the characterization of pineapple crown simplisia showed a moisture content of 9.50%, water-soluble juice content of 19.88%, soluble juice content in ethanol 13.30%, total ash content of 6.76%, acid insoluble ash content of 1.19%. The results of phytochemical screening testing show pineapple crown contains alkaloids, flavonoids, tannins, saponins, triterpenoids/steroids.