Bacteriology Commons^™

Sporicidal Activity Mechanism Of Lactic Acid And Peracetic Acid On Bovine Pathogenic Bacillus Cereus Spores, Xin Zhang, Yunjiao Chen, Jingjing Zhao, Haiying Zheng, Lanlan Liu, Wei Liu, Mingshan Fu, Weijuan Jia, Zelin Jia, Jiayu Cui, Yuhang Zhang, Huisheng Xiong, Yujie Ma, Xueli Wang, Haifeng Wang

The Thai Journal of Veterinary Medicine

In recent years, the pathogenicity of Bacillus cereus (B. cereus) has increased significantly, its host adaptability has continued to expand, and the infection spectrum has also expanded. At the same time, food contamination by B. cereus is also common. Therefore, it is of practical significance to select green, safe and effective inhibitors. Lactic acid (LA) and peroxyacetic acid (PAA) possess good antibacterial properties, making them environmentally friendly, safe, and non-toxic. The purpose of this experiment was to preliminarily explore the inhibition mechanism of LA and PAA on B. cereus spores. The effects of LA and PAA on B. …

In Vivo Expression Profiling Of Listeria Monocytogenes Internalins (Inlf, Inlp, Inlj) And Their Corresponding Host Receptors (Vim, Afdn, Muc2) Using A Rabbit Ligated Intestinal Loop Model, Nawar Al-Janabi, Nadhim Mushtaq Hashim Al-Bderee, Zahraa M. Madania, Mohanad Jawad Kadhim

Karbala International Journal of Modern Science

Listeria monocytogenes is a Gram-positive pathogen that causes severe infections, particularly in immunocompromised individuals. Internalin genes are important virulence factors that facilitate the bacterium's invasion of host cells. This research aimed to quantify in vivo expression of selected internalin genes (inlF, inlP, and inlJ) and their corresponding host receptors (VIM, AFDN, and MUC2) during L. monocytogenes infection. To achieve this aim, a rabbit ligated intestinal loop model was constructed comprising two intestinal loops. The first loop was injected with 1 mL of L. monocytogenes (1 × 10⁷ CFU/mL), while the second loop was injected with 1 mL of PBS as …

Endophytic Actinobacteria: Deciphering Therapeutic And Industrial Potential, And Prospects Of Genome Mining In Novel Products Discovery, Yusra Waheed, Rabia Shahdin, Imran Sajid

Journal of Bioresource Management

Endophytic actinobacteria are a diverse group of Gram-positive bacteria with high G+C content, which inhabit plants’ internal tissues, and represent a significant yet underexplored reservoir of bioactive secondary metabolites. In host plants, a remarkable repertoire of metabolites, including broad-spectrum antibiotics, anticancer, antiviral, antifungal, antioxidant, and immunomodulatory compounds, is synthesized by these microbial allies, carrying significant medicinal and agricultural potential. These endophytes, in contrast to their soil relatives, have developed unique biosynthetic gene clusters (BGCs) strongly influenced by plant-associated factors, leading to the production of structurally novel metabolites. In recent years, the advances in genome mining, metagenomics, and metabolomics have accelerated …

Dual-Action Antibacterial Agents Targeting Biofilm Reduction And Membrane Disruption In Staphylococcus Aureus, Rahmat Folashade Zakariyah, Waliyullahi Akorede Husain, Elohor Precious Samuel, Wonder Olanipekun Oloruntoba, Fatmah Opeyemi Saka, Khalid Ayinde Oyelami, Mariam Temitope Baker

Al-Bahir

Antimicrobial resistance in Staphylococcus aureus is a serious global health problem as the organism rapidly develops resistance against widely used antibiotics. This study sought to investigate the antibacterial and antibiofilm properties of γ-Tocopherol, a natural compound from Ocimum gratissimum, as well as its synergism with 5-hydroxymethylfurfural (5-HMF) against S. aureus. The antibacterial activities and minimum inhibitory concentrations of the compounds were determined using agar diffusion and microbroth dilution methods, respectively. Biofilm reduction was evaluated using 2,3,5-triphenyltetrazolium chloride (TTC) assay and membrane integrity was evaluated using the crystal violet microtiter plate assay and the ion leakage assay. The results …

A Novel Endolysin Of Phage Persinger Infecting Pseudomonas Aeruginosa: Activity Against Biofilms And Structural Prediction, Layla Abbud

James Madison Undergraduate Research Journal (JMURJ)

Endolysins are proteins that degrade bacterial cell walls. They are encoded on the genome of bacteriophages (viruses that infect and kill bacteria). At the end of the lytic cycle of a bacteriophage, endolysins cut the peptidoglycan layer of the bacterial cell wall, allowing the release of viral progeny. Pseudomonas aeruginosa is a well-known multidrug-resistant human pathogen that causes serious problems, especially in patients diagnosed with cystic fibrosis (CF). One property of P. aeruginosa is the production of biofilms, which is a defense against antibiotics. Previous research has shown that endolysins from bacteriophages can degrade biofilms. The endolysin protein from Persinger, …

In Vitro And In Silico Analysis Of The Antibacterial Activity Of Bioactive Compounds Extracted From Pineapple Peel, Wafa Mohammad Sadik, Iman Tajer Abdullah, Lana Abed Alnajar

Makara Journal of Science

Antibiotic resistance is a critical global challenge that requires the discovery of alternative therapeutic agents. Plants -derived compounds, such as those found in Ananas comosus (pineapple)peel, offer promising antibacterial potential. This study aimed to evaluate the antibacterial activity of pineapple peel extract using both in vitro and in silico approaches. Ethanolic extracts of pineapple peel were fractionated using silica gel chromatography, and the resulting fractions were analyzed by GC-MS. Antibacterial activity was tested against Gram-positive and Gram-negative pathogens using the agar well diffusion method, and the inhibition zones were recorded. Molecular docking was performed to assess the interaction of identified …

A Bacillus Pumilus Isolate With Promising Antimycobacterial Properties, Cody M. Pfaff

SACAD: Scholarly Activities

The emergence of multidrug-resistant bacterial pathogens, particularly Mycobacterium tuberculosis, highlights the urgent need for new antimicrobial agents. Tuberculosis remains one of the world’s deadliest infectious diseases, claiming over a million lives annually and posing increasing challenges due to the thick, lipid-rich, acid-fast cell wall of Mycobacterium species that renders them naturally resistant to many antibiotics. In this study, a soil sample collected from the Campus of Fort Hays State University yielded a bacterial isolate exhibiting strong antimicrobial activity. Initial screening against Escherichia coli MM294 showed a 10 mm inhibition zone, and subsequent testing identified the isolate as Bacillus pumilus …

Oral Streptococcus And Vitamin B12 Deficiency In E-Cigarette Users: A Microbial–Nutrient–Neurotransmitter Axis Linking To Mood Disturbances, Maryam Sabah Naser, Ali Jabbar Abd Al-Hussain Alkawaz, Ali Abbas Hashim Almusawi, Ali Jalil Obaid, Hasanain Ayed Mohammed Al-Khafaji, Reihaneh Sabbaghzadeh

Karbala International Journal of Modern Science

Background: With the rising popularity of e-cigarettes, questions have emerged regarding their broader influence on oral ecology, nutrient absorption, and psychological health. Disruptions in the oral microbiome may alter vitamin B12 dynamics. This, in turn, may indirectly influence serotonin biosynthesis and mood regulation.

Methods: An observational cross-sectional study involved 150 young adults segregated into groups of 50 each as vapers, smokers, or non-users. Streptococcus sanguinis and vitamin B12 metabolism-related variable statuses methylmalonic acid and holotranscobalamin were quantified in samples, along with inflammatory markers interleukin-6, kynurenine/tryptophan ratio, and serotonin. Statistical techniques, including ANOVA and the Kruskal-Walli’s test, correlation, and serial mediation …

Antimicrobial Resistance Of Cultivable Bacteria Isolated From Sorcerer’S Cave In Texas, Jennifer R. Huddleston, David E. Sanderson, Braden J. Smith, Joshua M. Brokaw, Evan M. Babb, Jeffrey T. Wooliscroft

International Journal of Speleology

Studying caves with minimal human contact offers insights into antimicrobial resistance before human influence. In this study, we isolated 315 bacterial strains from Sorcerer’s Cave in Texas and evaluated their resistance to seven common antimicrobials. Under half (41.4%) of the Gram-positive isolates and 68.4% of the Gram-negative isolates were resistant to three or more antimicrobials. The two most common genera identified were Pseudomonas and Bacillus. Compared to bacteria isolated in previous cave studies, Sorcerer’s Cave bacteria exhibited more extensive antimicrobial resistance. This study underscores the importance of minimally disturbed cave environments in advancing our knowledge of antimicrobial resistance present …

A Comparison Of White-Light And Monochromatic Led Sources For Antimicrobial Photodynamic Inactivation Of Staphylococcus Aureus, Emily Simmons

The Journal of Purdue Undergraduate Research

Drug-resistant bacteria are an ongoing public health crisis for which alternative treatments are needed. One alternative is antimicrobial photodynamic inactivation (aPDI), which uses potent photosensitizers and light irradiation to damage the bacteria. Our standard light source used in aPDI is a single-wavelength light source at 405-nm; however, we evaluated a white-light source for similarities in the resulting aPDI activities. This is done by comparing aPDI experiments using S. aureus and its methicillin-resistant strains (MRSA) conducted with either the white LED light source or the 405-nm LED light source. Statistical analysis using t-tests revealed no significant differences in the aPDI activities …

Elucidating The Relationship Between Water Quality And Antibiotic Resistance Of Rainwater Microbes Across Western Humboldt County, Theo P. Murphy, Eve Wendley, Justice Laskowski, Tyler Paredes

Humboldt Journal of Microbiology

Limited studies have been conducted regarding the fecal contamination and microbial dispersal through rainwater, with no known studies investigating the potential connection between antibiotic resistant microbes and water quality in rainwater. This study seeks to identify the presence of a correlation between water quality and incidence of antibiotic resistance in rainwater microbes. We hypothesize that there will be a correlation between these two variables. We additionally anticipate a high incidence of fecal contamination across rural and urban collection sites alike, with fecal contamination being more prevalent in rural areas than urban locals. To determine water quality, we measured the concentration …

Evaluation Of Anti-Bacterial Efficacy Of Ginger, Resin Gum, And Nigella Sativa Irrigants Against Enterococcus Faecalis: An In Vitro Study, Iman El Ghazzawy, Leen Imad Hasbini, Reem Chamseddine, Wael Betbout, Roula Abiad

International Arab Journal of Dentistry

Objectives: To evaluate the antibacterial efficacy of Ginger, Resin Gum, and Nigella Sativa, against Enterococcus Faecalis.

Methods: Thirty-eight extracted single-rooted premolars were inoculated with E.faecalis, except the negative control, and incubated for 4 weeks. After instrumentation samples were divided into 4 groups (n=7) according to final irrigation: NaOCl+EDTA (Group A), Nigella sativa (B), Resin Gum (C), Ginger (D), plus 2 control groups (n=5): Saline (E), and Saline without bacterial inoculation (F). Cultures were collected at baseline and after irrigation.

Results: One-way ANOVA showed that in groups A-D a statistically significant reduction of bacterial load was observed at …

Clinical Applications Of Probiotics: A Comprehensive Review Of Benefits And Challenges, Riyam Wissam Hassan

Maaen Journal for Medical Sciences

Probiotics are beneficial microorganisms that help balance microbes in intestines and promote growth beneficial bacteria, they vary between bacteria, yeasts, and fungi and they are helpful to human health when taken in adequate and suitable amounts. In addition to maintaining intestinal health and help with digestion and absorption, also inhibiting development and preventing spread of harmful microorganisms. It exists in different forms, in the intestines and in the foods, products fermented, and in the pharmaceutical supplements. Because human health depends largely on the interaction between humans and these microorganisms known as probiotics, it has found that these organisms have vital …

Potential Biological Hazards In Health Clinics: Key Strategies For Enhancing Worker Safety In Malaysia, Subki Ahmad, Normah Awang, Ermie Abdull Hamid, Anuar Ithnin, Nurul Farahana Kamaludin, Noraizah Muhd Nor

Makara Journal of Health Research

Background: Biological hazards in health clinics may lead to acute or chronic health issues for healthcare workers. This study aims to identify potential biological hazards within health clinics, with a focus on the knowledge, attitude, and practice (KAP) of healthcare workers, in order to improve their safety.

Methods: Samples from environmental surfaces were collected and cultured to identify bacterial pathogens. A cross-sectional study involving 203 healthcare workers was conducted using a questionnaire derived from CDC-adapted guidelines. Descriptive analysis and multivariate regression were used to assess KAP.

Results: Bacterial growth was observed in all clinics. The Kruskal-Wallis Test …

Isolation And Selection Of Bacillus Spp. As Candidate Probiotics For Use In Chickens, Adilah Adawiah, Komang Gede Wiryawan, Anja Meryandini

Makara Journal of Science

The growth rate of chickens can be improved by using probiotics as alternatives to antibiotics. Bacillus spp. as probiotics are particularly beneficial due to ability to form spores, which remain stable as commercial products over extended periods. This study aimed to isolate and select Bacillus spp. from Jasinga soil as probiotic candidates for chickens. A total of 15 isolates obtained of these, 12 were identified as Bacillus spp based on microscopic observations and screening test including ascertaining hemolysis, protease, amylase, and cellulase activities. Only six isolates exhibited gamma hemolysis and the ability to hydrolyze proteins, starch, and cellulose. Isolates BTJ1.1, …

Detection Of Quorum-Sensing Molecules In The Mutualistic Bacteria Vibrio Fischeri Exposed To Simulated Microgravity Using Cell-Based Biosensors., Paulina Slick, Maria C. Tobarra, Alba A. Chavez, Hugo Castillo

Beyond: Undergraduate Research Journal

Bacteria flourish in multiple environments when communicating with each other in a process known as Quorum Sensing. This process is accomplished by the production of small signaling molecules referred to as Autoinducers (AI). This communication allows the bacteria to alter their gene expression in an effort to regulate their cell number, behavior, community formation and virulence. The space environment provides stressful conditions for bacteria as they are exposed to radiation and Microgravity (µG or MG) altering synthesis and concentration of Autoinducers. The purpose of this research was to expose the model system Vibrio fischeri to simulated microgravity using the recently …

Survey And Analysis Of Rumen Microbiota In Yaks At Different Growth Stages, Shengwei Jin, Xinyue Liu, Yin-Cang Han, Yong-Gang Sun, Wei-Qin Ding, Ya-Qian Liu, Fa-Jie Gou, Jian-Yu Chen

The Thai Journal of Veterinary Medicine

This study investigated changes in the richness and composition of the rumen microbiome in yaks at various developmental stages. Eighteen healthy male yaks at the ages of 5 months (M5), 12 months (M12), and 24 months (M24) had samples of their rumen digesta taken for 16S rRNA gene sequencing. The 11087 amplicon sequence variations (ASVs) in total were found; the M5, M12, and M24 groups had 3585, 1146 and 5545 distinct ASVs, respectively. Alpha diversity indices Chao, Shannon, Sobs, and ace indicated significant differences among the groups. The principal coordinate analysis (PCoA) indicated significant changes in microbial community composition across …

Antibiotic Resistance Profile Of Enterobacteriaceae Isolated From Healthy Pigs In The Republic Of Armenia, Yura Shirvanyan, Irma Artushyan, Lilit Hovsepyan, Ashkhen Shirvanyan, Elmira Ghazaryan, Tigran Markosyan

The Thai Journal of Veterinary Medicine

The rising prevalence of antimicrobial resistance (AMR) among Enterobacteriaceae in livestock presents a significant threat to both animal and human health. This study investigates the antibiotic resistance profiles of Enterobacteriaceae isolated from 160 samples collected from the lymph nodes of healthy pigs in Armenia. Fifty isolates were identified, including Escherichia coli (24), Klebsiella spp. (10), Salmonella spp. (6), Raoultella ornithinolytica (4), Pseudomonas aeruginosa (4), and Proteus mirabilis (2). Resistance was evaluated using the disk diffusion method against 22 antibiotics from nine classes. Alarmingly, 94.5% of isolates were resistant to clarithromycin and 90.3% to erythromycin, while resistance to cephalothin and amoxicillin …

Antibacterial Activity Of Endophytic Actinobacteria Isolated From Ziziphus Mauritiana Against Multidrug-Resistant Strains, Hafifatunil Khairani, Jepri Agung Priyanto, Muhammad Eka Prastya, Dwi Retnowati

Makara Journal of Science

Increasing resistance to existing antibiotics has led to a need for new alternative sources. Among the possibilities that need to be explored is the endophytic actinobacteria associated with Ziziphus mauritiana. The present study aimed to evaluate the antibacterial activity of endophytic actinobacteria isolated from Z. mauritiana against five multidrug-resistant bacterial strains. Thirty actinobacteria isolates were obtained from the roots, stem, and leaves of the plant using the serial dilution technique. Using a double-layer agar test, we found that colonies from five of the 30 isolates (16%) exhibited antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA) and the M18 strain of Bacillus …

The Use Of Ethyl Lauroyl Arginate Encapsulated In Organic Nanoparticles Within Boar Semen Extenders To Control Bacterial Growth And Preserve Sperm Quality During Short-Term Storage Without Antibiotics, Congbang Ngo, Naiyaphat Nittayasut, Teerapong Yata, Junpen Suwimonteerabutr, Nuvee Prapasarakul, Jane M. Morrell, Padet Tummaruk

The Thai Journal of Veterinary Medicine

The aim of the present study was to investigate the effect of adding ethyl lauroyl arginate (ELA), encapsulated in organic nanoparticles, to a semen extender without antibiotics on sperm quality and bacterial load during short-term storage. Three ejaculates from Duroc boars were divided into four equal portions and diluted with Beltsville Thawing Solution to produce semen doses containing 3 billion spermatozoa in 80 ml. The extended semen did not include antibiotics but instead incorporated different concentrations of ELA nanoparticles into the extenders: 0 ppm, 5 ppm, 10 ppm, and 15 ppm. The semen doses were stored for 4 days, with …

Evaluating The Effectiveness Of Benguet Pine (Pinus Kesiya) Xylem For Deep Well Water Filtration, Allen Conner C. Hizon, Robert Zachary M. Santos, Juan Jose B. Lacson, Jefferson Danilo G. Villarin, Juan Carlo T. Gumangan

Sinaya: A Philippine Journal for Senior High School Teachers and Students

Even today, many rural and remote communities still do not have access to safe drinking water, which is a basic right of every human. To address this problem, the effectiveness of the Benguet pine tree (Pinus kesiya) xylem as a sustainable water filtration method for well water was investigated. The physical and chemical properties of the filtered and unfiltered deep well water were tested: the total dissolved solids (TDS) and the electrical conductivity using a 5-in-1 electronic water quality tester and the pH level using pH strips. On the other hand, the microbiological metrics, such as heterotrophic plate …

Activities Of Cellulolytic, Amylolytic, And Secondary Metabolites From Thermophilic Actinomycetes Collected From The Heated Soil Around Cisolok Geyser, Dhian Chitra Ayu Fitria Sari, Fitria Ningsih, Mazytha Kinanti Rachmania, Akira Yokota, Wellyzar Sjamsuridzal

Makara Journal of Science

This study investigated the antimicrobial activity, cellulolytic, and amylolytic abilities of eight thermophilic Actinomy-cetes isolated from the heated soil around the Cisolok geyser, West Java, Indonesia. Cellulolytic and amylolytic abili-ties were screened for on media by adding 1% (w/v) soluble starch and carboxymethylcellulose (CMC), respectively. Antimicrobial activity was screened for using the agar-plug diffusion method by cultivating strains on various growth media. Growth at various temperatures showed that six strains could grow up to 50 °C. Seven out of eight strains showed amylolytic ability at 40 °C and 45 °C, and only four strains did so at 50 °C. Screening …

Presence Of The Ade Multidrug Systems And Response To Triclosan Exposure In Acinetobacter Baumannii From Animal Origins, Sirawit Pagdepanichkit, Rungtip Chuanchuen

The Thai Journal of Veterinary Medicine

Thirty Acinetobacter baumannii from animal origins were obtained from 210 animal carcasses submitted for post-mortem examination, including dogs (n=112), cats (n=45), rabbits (n=17), birds (n=15), pigs (n=7) and exotic animals (n=14). All the isolates were evaluated for antimicrobial susceptibility with absence and presence of efflux inhibitors i.e. reserpine and carbonyl cyanide m-chlorophenylhydrazone (CCCP) and expression profile of important six multidrug efflux systems (i.e. AdeABC, AdeDE, AdeFGH, AdeIJK, AbeM and AmvA). Fifteen isolates expressing different Ade multidrug efflux pumps were selected for determining transcription levels and regulatory mutations. A continuous in vitro exposure experiment with benzalkonium chloride, chlorhexidine and triclosan …

Antibiotic Susceptibility Pattern And Esbl Prevalence In Nosocomial Escherichia Coli From Urinary Tract Infection In Kpk, Peshawar, Muhammad Fawad, Noha E Abdel-Razik, Zain Alhindi, Muhammad Usman Amin, Eman Adnan Abu-Seer, Mashael S.Alfaifi, Murad Ali, Farkad Bantun, Sheraz Dawar, Suleman Khan, Saad Alghamdi

Journal of Bioresource Management

The study aimed to evaluate antibiotic susceptibility patterns and extended-spectrum beta-lactamase prevalence in Escherichia coli isolated from urinary tract infections. Total fifty (50) samples of E. coli were obtained from urinary tract infection specimens in Hayatabad Medical Complex and private clinics in Peshawar, Pakistan. The present study obtained 50 E. coli isolates from 100 UTI specimens. The plates were incubated at 35 to 37°C for 24 to 48 hours. Different biochemical tests were carried out to identify the isolates. Antibiotic susceptibility testing and ESBL screening were done per the CLSI (2023) guidelines. The disc diffusion method was used to determine …

Multidrug-Resistant Esbl-Producing Escherichia Coli Coexisting With Colistin-Resistance Genes In Pig Farms, Central Thailand, Wipawee Songsaeng, Nutthee Am-In, Nuvee Prapasarakul, Wandee Sirichokchatchawan

The Thai Journal of Veterinary Medicine

The presence of extended-spectrum beta-lactamase and colistin resistance E. coli in food-producing animals is a public health concern. This study was conducted using a rigorous methodology to survey the prevalence of ESBL-producing and colistin-resistant E. coli from pig farms in the central part of Thailand. A total of 519 samples were collected from fecal, feed, and waste in 53 farms located in central Thailand. All samples were inoculated onto selective agar, and species identification was performed using biochemical assays and MAlDI-TOF MS. Antimicrobial susceptibility was determined by broth microdilution, and ESBL production was confirmed by the combination disc diffusion method. …

The Molecular Detection Of Hemotropic Mycoplasma Species In Dogs, Hafize Tuğba Yüksel Dolgun, Şükrü Kirkan

The Thai Journal of Veterinary Medicine

Hemotropic mycoplasmas are uncultured bacteria that cause different degrees of hemolytic anemia in infected hosts. Molecular approaches are used to diagnose hemotropic mycoplasmas since they are difficult to identify using conventional methods. The aim of this study was to use molecular approaches to determine hemotropic mycoplasmas in dogs. Blood samples were collected in tubes (with EDTA) from 100 dogs. After DNA extraction, 100 DNA samples were investigated by PCR. Hemotropic mycoplasma was detected in 12 (12%) samples and positive samples were subjected to Sanger sequencing. Mycoplasma haemocanis was detected in 6 (50.0%) of the samples, Candidatus Mycoplasma hematoparvum in 5 …

Degradation Of Chlorpyrifos Residue On Tropical Inceptisol Soil With Indigenous Bacteria Treatment, Asep Kurnia, Hidayatuz Zu`Amah, Baiq Nunung Sulastri, Ria Fauriah Makmur

Makara Journal of Science

The use of soil microbes is one of the most effective methods for degrading pesticide residue in soil. Microbes can accelerate the degradation of persistent pollutants including chlorpyrifos in soil. This research aims to find soil bacteria with the greatest potential to degrade chlorpyrifos residue in tropical inceptisol soil and determine its degradation index (DI). The soil used in this experiment was collected from agricultural fields in the districts of Demak, Central Java Province, Indonesia. The experiment was performed using factorial randomize complete block design composed of two factors and four replications. The first factors were made up of two …

Synthesis, Molecular Characteristics, And Antibacterial Assessment Of Marine Hydroid Aqueous Extract-Based Silver Bio-Nanoparticles, Fredryk Mandey, Aulia Rhamdani Arfan, Rugaiyah Andi Arfah

Makara Journal of Science

This investigation aims to synthesize, analyze the molecularity, and test the ability of bacterial inhibition capability of silver nanoparticles that have been synthesized by simply mixing silver nitrate and aqueous extracts of marine natural products with and without the addition of amylum as a stabilizing agent. This research, with and without the addition of amylum as a stabilizing agent, obtained 39.0 and 55.2 mg of solids of round-shaped morphology silver nanoparticles with diameters of 87.9 and 103.0 nm., respectively. In addition, the antibacterial testing assay against Staphylococcus aureus and Escherichia coli showed some considerably good results. S. aureus with the …

Novel Microbiological Medium Developed For The Isolation Of Bacteria Associated With Estuarine Anemones, Parker K. Lund, Catalina Cuellar-Gempeler

IdeaFest: Interdisciplinary Journal of Creative Works and Research from Cal Poly Humboldt

Out of the nearly one trillion species of microbiota estimated to inhabit Earth only ten thousand have been cultured in the laboratory. Culturing continues to play a vital role in determining the physiology and ecologic function of individual bacteria in microbial communities and for microbes associated with host organisms one of the major challenges is developing microbiological media that mimics the bacteria’s natural environment enough to promote growth. Here, we target bacteria associated with the estuary anemones Diadumene lineata and Metridium senile by developing a novel medium that uses anemone tissue as the sole source of nutrients. We further measured …

Reducing Food Scarcity: The Benefits Of Urban Farming, S.A. Claudell, Emilio Mejia

Journal of Nonprofit Innovation

Urban farming can enhance the lives of communities and help reduce food scarcity. This paper presents a conceptual prototype of an efficient urban farming community that can be scaled for a single apartment building or an entire community across all global geoeconomics regions, including densely populated cities and rural, developing towns and communities. When deployed in coordination with smart crop choices, local farm support, and efficient transportation then the result isn’t just sustainability, but also increasing fresh produce accessibility, optimizing nutritional value, eliminating the use of ‘forever chemicals’, reducing transportation costs, and fostering global environmental benefits.

Imagine Doris, who is …