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This study aims to comprehensively evaluate the potential pharmacological activities and safety profiles of seven secondary metabolite compounds (Caffeic Acid, Syringic Acid, Quercetin, Luteolin, p-Coumaric Acid, Ferulic Acid, and Epicatechin) identified in the Bajakah plant (Spatholobus littoralis Hassk.). The research approach integrates in silico analysis using the PubChem database, biological activity prediction via PASS Online, oral toxicity assessment through ProTox-II, and pharmacokinetic evaluation using pkCSM, which were subsequently validated through an empirical literature review. The results indicate that these compounds exhibit significant activity probabilities, particularly as antimutagenic, antiseptic, and antioxidant agents. Luteolin demonstrated the highest antimutagenic potential, while Quercetin showed dominant antioxidant activity. Toxicity profiling revealed that Luteolin and Caffeic Acid possess the highest safety levels (Class 5), whereas Quercetin requires special attention (Class 3). These computational findings strongly correlate with empirical evidence demonstrating that Bajakah extract exhibits broad-spectrum antibacterial activity against Staphylococcus aureus, antifungal activity against Candida albicans, as well as high antioxidant and anti-inflammatory capacities. This study provides a strong molecular foundation for the development of Bajakah as a safe and effective phytopharmaceutical candidate.

With growing antimicrobial resistance becoming a major health concern, there is an urgent need to explore alternative treatment options. This study examined the efficacy of copper sulfate pentahydrate (CSP) against eight microorganisms commonly implicated in vaginal infections. We tested three Candida species (C. albicans, C. glabrata, and C. tropicalis) along with five bacterial species, including Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, Gardnerella vaginalis, and Pseudomonas aeruginosa. The agar dilution test was performed at concentrations ranging from 0.0001M to 0.7M of CSP. We obtained an effect of CSP antimicrobial, which was concentration-dependent. Concentrations low ( ≤ 0.007M) did not influence growth significantly. We observed partial growth inhibition at medium concentrations (0.05-0.07M, equivalent to approximately 780 -1092 µg/ml) of the solution. The growth of bacteria and yeasts was fully inhibited at 0.05M and 0.07M, respectively. The dose required to kill the organisms (not merely inhibit their growth) was 0.25M (approximately 2014 µg/ml) across all microorganisms used, and we verified this by observing no growth when samples were inoculated into fresh media. These findings have indicated that CSP possesses good antimicrobial efficacy against typical vaginal pathogens at doses that may be applied in topical therapies. However, some additional research is required, especially the research that will investigate the toxicity on human cells and the production of suitable formulations to be used clinically.

Introduction: Bronchopneumonia is an inflammatory lung condition involving one or more lobes, characterized by patchy infiltrates commonly caused by Streptococcus pneumoniae (30–50% of cases), followed by Staphylococcus aureus and Klebsiella pneumoniae in more severe infections. Clinical manifestations include high fever, restlessness, dyspnea, rapid and shallow breathing accompanied by rales, vomiting, and either dry or productive cough. Respiratory infections may trigger inflammatory responses that increase excessive mucus production. Case Illustration: A 1-year-5-month-old girl weighing 7.9 kg presented to RSUD Ir. Soekarno Sukoharjo with shortness of breath and intermittent fever for six days, accompanied by vomiting, decreased appetite and fluid intake, cough, weakness, runny nose, and oral sores. Physical examination revealed a weak general condition, compos mentis consciousness, dyspnea, wheezing, and fine wet rales in both lung bases. Dysmorphic facial features consistent with Down syndrome were observed. Laboratory findings showed leukopenia, eosinopenia, and elevated RDW-CV, while chest radiography indicated bilateral bronchopneumonia. Management included intravenous fluids, antibiotics, antipyretics, antiemetics, and bronchodilators. The patient was diagnosed with sixth-day fever due to bronchopneumonia, mild-to-moderate dehydration, recurrent nausea and vomiting, atrial septal defect, and Down syndrome.

Aloe vera (L.) Burm.f. is a bioactive plant containing polysaccharides, anthraquinones, sterols, vitamins, minerals, and glycoproteins, contributing to wound healing through anti-inflammatory, antibacterial, antioxidant mechanisms, fibroblast stimulation, and accelerated re-epithelialization. This study employed a systematic literature review (SLR) of 37 peer-reviewed articles (2018–2025) to evaluate the biochemical potential of Aloe vera and its application as a basis for modern pharmaceutical topical formulations. Results revealed that acemannan increased fibroblast proliferation by up to 200, modulated TGF-1, enhanced type I and III collagen deposition, and accelerated re-epithelialization. Anthraquinones such as aloin and emodin exhibited antibacterial activity against Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli. Nanoemulsion and nanogel formulations improved transdermal penetration up to threefold compared to conventional gels. These findings highlight Aloe vera’s potential as a wound healing agent and a basis for modern pharmaceutical topical preparations.

Skin that is prone to bacterial infections requires proper care using products containing antibacterial agents. One potential alternative is kaffir lime leaves (Citrus hystrix), which are known to contain antibacterial compounds. This study aimed to evaluate the formulation of liquid soap containing kaffir lime leaf extract and to determine the optimal concentration for inhibiting bacterial growth. An experimental laboratory design was applied, and the antibacterial effectiveness was tested using the disk diffusion method against two test bacteria, namely Staphylococcus aureus and Escherichia coli. Statistical analysis was performed using One-Way ANOVA, followed by Scheffe’s post-hoc test to identify significant differences among treatment groups. The results indicated that the liquid soap containing kaffir lime leaf extract exhibited good physical quality and met standard parameters, including organoleptic evaluation, pH, viscosity, and foam height tests. Antibacterial testing showed that the highest inhibition zone against Staphylococcus aureus was observed at a 15% concentration with a zone diameter of 18.28 mm (strong category), while the highest inhibition zone against Escherichia coli was also at a 15% concentration with a diameter of 19.03 mm (strong category). The One-Way ANOVA results showed a significance value (p < 0.05), indicating a statistically significant difference among treatments for both bacterial species. These findings suggest that liquid soap formulated with kaffir lime leaf extract, particularly at a 15% concentration, has strong antibacterial activity and potential as an effective skin care product. Further studies are recommended to evaluate safety, stability, and long-term effectiveness.

Burns can cause infection, hinder healing, and increase the risk of long-term complications. Staphylococcus aureus and Pseudomonas aeruginosa often infect burn wounds in general, infections are treated with antibiotics, but continued use of antibiotics can cause bacterial resistance. Binahong leaves (Anredera cordifolia) have potential as a substitute for antibiotics because of their antibacterial properties from active compounds such as alkaloids, polyphenols, tannins, saponins and ascorbic acid. This research aims to activate the antibacterial ability of binahong leaf ethanol extract against S. aureus and P. aeruginosa. This research uses an experimental method with a control group design using diffusion and dilution methods at varying concentrations. Statistical analysis of the inhibition zone showed that there was a significance difference of <0.05 between treatment groups. In the solid diluted method, S. aureus obtained an MIC value of 10.5% and a MBC of 11.5%, whereas P. aeruginosa had an MIC of 14.5% and a MBC of 15%. The results showed that the ethanol extract of binahong leaves was more sensitive to S. aureus than P. aeruginosa.  

Pine soda is a natural fermented liquid from pine needles (Pinus merkusii) which has a distinctive aroma and contains bioactive compounds with potential as antimicrobial agents. This study aims to determine the antibacterial activity of pine soda against Staphylococcus aureus using the disc diffusion method and to compare its effectiveness with the antibiotic ampicillin as a positive control. The process of making pine soda is carried out through simple fermentation of Pinus merkusii pine needles under certain conditions to produce a fragrant liquid. Furthermore, qualitative tests are carried out to identify the content of bioactive compounds, such as flavonoids, phenols, and essential oils, which are known to have antibacterial properties. In the antibacterial activity test, paper discs that have been soaked in pine soda solutions with graded concentrations (2%, 4%, 6%, 8%, and 10%) are placed on agar media that have been inoculated with S. aureus. The results of the observation showed the presence of inhibition zones in each treatment with varying sizes. The largest inhibition zone was obtained at a concentration of 10% with a diameter of 10 mm, which is included in the medium inhibition category. As a comparison, ampicillin produced an inhibition zone of 26.3 mm, while distilled water, the negative control, showed no inhibition zone. These findings indicate that the antibacterial activity of pine soda is influenced by its bioactive compound content, although its effectiveness is still lower than that of standard antibiotics. This potential opens up opportunities for developing pine soda as a safe natural antibacterial agent, whether in the form of health products such as antiseptics, natural cleaners, or functional beverages that support body health. Further research is needed to optimize the fermentation process, increase the concentration of active compounds, and test its effectiveness against various types of pathogenic bacteria.

Traditional salted fish is a widely consumed food product in Indonesia due to its high shelf life and distinctive flavor. However, the production process, which is generally carried out conventionally and openly, has the potential to cause contamination by pathogenic microbes, which can endanger consumer health. This study aims to identify and analyze the presence of pathogenic microorganisms in traditional salted fish products through a microbiological approach. Salted fish samples were taken from various traditional markets and analyzed using microbial culture methods, biochemical identification, and molecular confirmation for pathogenic bacteria such as Salmonella spp., Vibrio spp., Escherichia coli, and Staphylococcus aureus. The results showed that most contained pathogenic bacteria exceeding the threshold set by SNI and BPOM, indicating weak sanitation and hygiene control in the processing process. These findings emphasize the importance of implementing hygiene standards and quality control in the home industry of salted fish processing. Furthermore, environmental factors such as sea air quality, drying methods, the use of unclean containers, and minimal knowledge of business actors regarding hygiene practices are the main causes of contamination. In some locations, salted fish is dried directly on the ground or on unsterilized surfaces, increasing the risk of exposure to dust, insects, and microorganisms. The study also found that labeling and date information were not available on most products, making it difficult for consumers to assess their safety. As a preventative measure, educating producers and providing training on Good Manufacturing Practices (GMP) and Sanitation Standard Operating Procedures (SSOP) is crucial. Collaboration between the Health Office, the Food and Drug Monitoring Agency (BPOM), and local governments is also recommended to conduct regular inspections and provide food safety certification facilities for small businesses.

This study investigated the phytochemical screening and antibacterial activity against various microorganisms including E. coli, Staphylococcus aureus, Klebsiella pneumoniae, Enterococcus faecalis, and Candida albicans. Active compounds were isolated and identified from Aleppo Oak Gallnut, obtained from the Iraqi plant Quercus Infectoria L. Plant extracts were prepared using a continuous extraction apparatus, Soxhlet, with a successive solvent system based on polarity differences, including petroleum ether (60-80°C), ethanol (78°C), and hot aqueous extracts. Acid hydrolysis was performed on the raw ethanol and hot water extracts to obtain free phenolic compounds, including Gallic acid, Apigenin, Rutin, Kaempferol, Chlorogenic acid, and Caffeic acid, using high-performance liquid chromatographic (HPLC) techniques. The inhibitory activity of Aleppo Oak Gallnut extracts (Ethanol and Hot Aqueous) after acid hydrolysis was tested using four concentrations (25%, 50%, 75%, 100%) against various microorganisms. The Ethanol extract exhibited a significant inhibitory effect on Enterococcus faecalis. The Hot Aqueous extract showed a modest inhibitory effect on Enterococcus faecalis. The Ethanol extract demonstrated strong inhibition against Klebsiella pneumoniae. The Hot Aqueous extract at 100% and 75% showed high inhibition. The Ethanol extract exhibited significant inhibitory effects against Staphylococcus aureus at 100%. The Hot Aqueous extract at 75% and 100%  demonstrated weaker inhibition against Staphylococcus aureus. The Ethanol extract demonstrated weaker inhibition against E. coli, and the Hot Aqueous extract showed no effect at 50%  and 25%, and slight inhibition at 100%  and 75%. For Candida albicans, the Ethanol extract showed minimal inhibition at all concentrations and no effect at 25%. The Aqueous extract had a slight effect at 100%  and no inhibition at 75%, 50%, and 25%.

Several of the best-selling small-molecule medications and natural alkaloids contain piperidine, a crucial saturated heterocyclic scaffold with a wide variety of biological functions. The hydrazide-hydrazone moiety's exceptional use in the pharmacological and biological domains made it particularly appealing. Objective: Designing and synthesizing a novel set of 4-Piperidin-1-yl-benzoic acid substituted hydrazides, Ac1-c3 and Bc1-c5, as potentially antimicrobial agents and characterizing them using IR, 1H-NMR, and mass spectroscopy. Methods: By esterifying 4- Piperidin-1-yl-benzoic acid Ac1 and then treating with hydrazine hydrate it to produce Ac3 in a good yield. The hydrazide Ac3 was condensed with the proper aldehydes or ketone to synthesis the hydrazones Bc1–c5. The in vitro bacterial activity was evaluated anti two Gram-negative bacteria, Pseudomonas aeruginosa, and Candida albicans, as well as two Gram-positive bacteria, Staphylococcus aureus and Bacillus subtilis. Results: The majority of tested compounds demonstrated significant efficacy anti Pseudomonas aeruginosa, Candida albicans. Notably, compound Bc3 emerged as the most effective derivative within the series. Conclusions: The Compounds (Bc1–c4) that were synthesized demonstrated moderate to good antimicrobial activity against a number of bacterias species and Candida albicans.

This research was conducted to assess the antimicrobial activity of Dettol, Betadine, and Harpic against the bacterial growth of Staphylococcus aureus using the disk diffusion technique. The method involved placing sterile paper disks soaked with each test agent onto agar media previously inoculated with S. aureus. Observations revealed that Harpic formed the widest inhibition zone, measuring 15 mm, followed by Dettol with a 12 mm zone, and Betadine with the smallest at 8 mm. Meanwhile, the control disk exhibited no inhibitory effect (0 mm). These results suggest that Harpic has the highest antimicrobial potential among the three products tested in suppressing Staphylococcus aureus growth.

Shrimp petis is a traditional Indonesian fermented product that is susceptible to contamination by pathogenic bacteria such as Staphylococcus aureus, Escherichia coli, and Pseudomonas spp. Preservation is generally carried out with chemical antibiotics, but their use can cause side effects and microbial resistance. This study aims to examine the effectiveness of ginger extract (Zingiber officinale) as a natural antibiotic against bacteria in shrimp petis. Ginger extract is known to contain active compounds such as gingerol and shogaol which have antibacterial activity. Through literature studies and disc diffusion method analysis, it was found that ginger extract was able to produce an inhibition zone of 12–22 mm against test bacteria. These results indicate that ginger extract is effective in inhibiting the growth of pathogenic bacteria and has the potential to be used as a natural preservative. In addition, a combination of biological, chemical, and natural preservation approaches is recommended to maintain the quality and safety of shrimp petis. The use of ginger extract is in line with the trend of healthy and environmentally friendly food.

This study aims to evaluate the antibacterial activity of shrimp paste extract against Escherichia coli (Gram-negative) and Staphylococcus aureus (Gram-positive) using the paper disk method. The shrimp paste was extracted using ethanol as a solvent and tested for its inhibitory effect on bacterial growth through paper disks infused with various concentrations of the extract. The results showed that the shrimp paste extract exhibited antibacterial activity against both bacterial species, with varying inhibition zone diameters depending on the concentration used. Higher antibacterial activity was observed against Staphylococcus aureus compared to Escherichia coli, indicating that shrimp paste has potential as a natural antibacterial agent, particularly against Gram-positive bacteria. These findings support the utilization of fishery by-products such as shrimp paste as an eco-friendly alternative source of natural antibacterial agents.

This study aims to identify the presence of Staphylococcus aureus in fermented pedo fish (Decapterus spp.) products using the Gram staining technique. The Gram staining technique is a simple but effective method to distinguish Gram-positive and Gram-negative bacteria based on differences in their cell wall structure. Samples were taken from traditional fermented pedo fish and analyzed in a microbiology laboratory. The results showed the presence of Gram-positive coccus-shaped bacteria that clustered like grapes, in accordance with the morphological characteristics of S. aureus. This identification can be used as an initial step in evaluating the microbiological quality of fermented products.

The Sambung Nyawa plant (Gynura procumbens) is known to have various benefits, including as an antibacterial. This study aims to identify and evaluate the antibacterial properties of secondary metabolites from endophytic fungi isolated from Sambung Nyawa leaves against Staphylococcus epidermidis and Staphylococcus aureus bacteria.  Fungi were isolated and then fermented for 7 days using Nutrient Broth media. Antibacterial activity was evaluated using agar diffusion technique, with zone of inhibition as an indicator of activity. The results showed that IFDSN 2 fungal isolate had the highest zone of inhibition, with a very strong category against S. aureus and strong against S. epidermidis. This finding supports the potential of endophytic fungi as an environmentally friendly natural antibacterial source.

Infections and antibiotic resistance pose significant challenges to global healthcare. This study aims to evaluate the antibacterial potential of endophytic fungi isolated from betel leaves (Piper betle L.) against Staphylococcus aureus and Staphylococcus epidermidis. The research involved isolating endophytic fungi using Potato Dextrose Agar (PDA), purifying the isolates, and testing their antibacterial activity through the disk diffusion method. The results revealed that three endophytic fungal isolates produced inhibition zones, with the highest average diameter of 17.46 mm against Staphylococcus aureus and 18.66 mm against Staphylococcus epidermidis. These findings indicate the potential of betel leaf endophytic fungi as a natural source of antibacterial agents. This study underscores the role of endophytic fungi in developing new antibiotics to combat bacterial resistance.    

The increasing incidence of bacterial resistance to antibiotics has become one of the major challenges in global health, necessitating the exploration of natural antibacterial sources as alternative treatments, such as bioactive compounds derived from sea urchins. This literature review aims to evaluate the antibacterial potential of sea urchin extracts based on existing research findings. The literature search was conducted using the PubMed and Google Scholar databases using the Boolean operators (AND, OR). Inclusion criteria include articles published between 2014 and 2024, available in full text, written in either Indonesian or English, and discussing the antibacterial activity of sea urchin extracts from the species Diadema setosum and/or Echinometra mathaei. Based on the selection process, eight articles met the inclusion criteria and were included in the review. The results of the literature review indicate that sea urchin extracts exhibit antibacterial activity against gram-negative bacteria, including Escherichia coli, Salmonella typhi, Salmonella typhimurium, Shigella flexneri, Pseudomonas aeruginosa, Aeromonas hydrophila, Acinetobacter sp., Citrobacter freundii, and Klebsiella pneumoniae, as well as gram-positive bacteria, including Propionibacterium acnes, Staphylococcus aureus, Bacillus cereus, Bacillus subtilis, Staphylococcus epidermidis, Streptococcus mutans, and Streptococcus sobrinus. These antibacterial effects are attributed to the presence of secondary metabolites such as alkaloids, steroids, flavonoids, saponins, and phenolics.

This research investigates the modification of ceftriaxone to synthesized imine derivatives (A-C), assessing their chemical and biological efficacy. This study underscores the notable antibacterial effectiveness of synthesized derivatives against Staphylococcus aureus and Escherichia coli, exhibiting a determined dose correlation. The synthesis procedure reacts ceftriaxone with different aldehydes, such as 2-Hydroxy-4-Methoxybenzaldehyde and 4-ethoxy-2-hydroxy-benzaldehyde, and 5-Chloro-2-hydroxybenzaldehyde yielding imines analyzed by various methods, such as FT-IR and 1H-NMR. The results indicate that imines may have implications in medical therapies, especially in addressing multidrug-resistant bacteria and a human breast cancer cell line MCF-7. Imine derivative C exhibits significant antibacterial efficacy, measuring 33 mm at 0.1 ppm against Staphylococcus aureus, while 30 mm at 0.1 as anti-Escherichia coli more activity from other synthesized derivatives. The derivative C recorded a value of 29.2441 after 24 hours as an inhibition MCF-7 cell line.

Halitosis, or bad breath, is a multifactorial condition that is often caused by anaerobic bacterial activity in the oral cavity, especially on the dorsum surface of the tongue. The use of natural ingredients as an alternative halitosis treatment is a concern, one of which is the nutmeg plant (Myristica fragrans), which has various active compounds such as essential oils, saponins, flavonoids, and alkaloids. This study aims to assess the potential of nutmeg plants in inhibiting the growth of bacteria that cause halitosis through a literature review of 30 national and international journals within the last five years. The results showed that nutmeg extracts, both from seeds, pulp, and leaves, have antibacterial activity against various types of halitosis-causing bacteria such as Streptococcus mutans, Staphylococcus aureus, and Escherichia coli. This activity is obtained through the mechanism of cell membrane damage and inhibition of bacterial cell wall synthesis by bioactive compounds in nutmeg plants. Therefore, nutmeg has potential as a natural antibacterial agent in the management of halitosis.  

Gallic Acid (GA) is a polyphenolic compound widely found in plants and has shown potential as a natural antibacterial agent. This literature review aims to assess the effectiveness of gallic acid as an antibacterial based on available experimental studies. The reviewed articles include studies published between 2015 and 2025 that specifically investigated the antibacterial activity of gallic acid against pathogenic bacteria. Various studies have demonstrated that GA, either in its pure form or in combination with other materials such as hydrogels, gold nanoparticles (AuNP-GA), graphene oxide (GO-GA), and natural extracts, exhibits significant antibacterial activity against a wide range of bacteria, including Staphylococcus aureus, Escherichia coli, and other pathogenic bacteria. GA-based formulations also show additional benefits, such as promoting wound healing, supporting osteogenesis, and even exerting cytotoxic effects on certain cancer cells. Nevertheless, further research is needed to optimize the clinical application of gallic acid by considering both its safety and efficacy.