Officinalis Extract Research Articles

Dual Assay Validation of Rosmarinus officinalis Extract as an Inhibitor of SARS-CoV-2 Spike Protein: Combining Pseudovirus Testing, Yeast Two-Hybrid, and UPLC-Q Exactive Orbitrap-MS Profiling.

This study evaluates the effectiveness of Traditional Chinese Medicine (TCM) extracts in blocking the interaction between the SARS-CoV-2 Spike protein and human ACE2 receptor, utilizing a dual-method approach to explore the antiviral potential of natural compounds. This work aims to evaluate the capability of TCM extracts in inhibiting the SARS-CoV-2 Spike protein and ACE2 receptor interaction using advanced biochemical assays. A dual-method screening approach was utilized, beginning with a pseudovirus assay to assess the inhibition capabilities of TCM extracts invitro, followed by a split-ubiquitin yeast two-hybrid (Y2H) system to validate interactions in live cells. Active compounds were characterized and quantified using UPLC-Q-Exactive-Orbitrap-MS. Among the 91 TCM extracts tested, Rosmarinus officinalis exhibited the most potent inhibition in both pseudovirus and Y2H assays, significantly reducing viral entry and disrupting the Spike-ACE2 interaction. Comprehensive chemical profiling via UPLC-Q-Exactive-Orbitrap-MS identified 132 compounds, including phenolics, flavonoids, and terpenoids. This research validates the use of TCM extracts in viral inhibition strategies, demonstrating the utility of integrating traditional remedies with modern scientific approaches to discover new therapeutic agents.

Characterization of Bioactive Phenolic Compounds Extracted from Hydro-Distillation By-Products of Spanish Lamiaceae Plants

Plants of the Lamiaceae family are widely used for the extraction of essential oils, and this industry generates a large number of solid residues as by-products, which contain non-volatile valuable compounds. The aim of this work was to identify and quantify the phenolic compounds present in these solid residues from different important Spanish species of Lamiaceae to characterize and valorize them. Forty-seven phenolic compounds were identified by HPLC-DAD-MS and quantified by HPLC-DAD. Different concentrations and types of phenolic compounds were found between the solid residues. The Rosmarinus officinalis extracts showed the highest total phenolic content due to their high phenolic terpene concentrations. The Thymus mastichina extracts were characterized by kaempferol and flavanones, and some flavones were derived from luteolin and apigenin. Finally, the sample Lavandula and Salvia lavandulifolia extracts presented the lowest content of most phenolic compounds, with the exception of some phenolic acids, such as danshensu, salvianolic acid A, and glucosides of hydroxycinnamic acids. Therefore, this work provides information on the quantification of a large number of phenolic compounds using a simple, sensitive, reproducible, and accurate methodology. In addition, the results indicate that these solid residues still contain important amounts of different polyphenols, which are antioxidants and can be used in different industries.

Composition and Biological Activity of Flavonoid-containing Fractions of an Extract from Gratiola officinalis L.

Gratiola officinalis L. (hedge hyssop), a medicinal plant of the Scrophulariaceae family, has diuretic, purgative, and vermifuge properties. It is used as a herbal tea to treat chronic gastroenteritis, renal colic, jaundice, and intestinal worms. Previously, we have found that an extract from G. officinalis is nontoxic and has antitumor, antioxidant, antimicrobial, antiinflammatory, anticachexic, and other properties. Our aims in this study were to separate the G. officinalis extract into individual fractions, to identify the most biologically active fractions, and to examine the chemical composition of these fractions and their biological activity toward A498 renal carcinoma cells. The G. officinalis extract was fractionated by reversed-phase high-performance liquid chromatography, and each fraction was tested for antitumor activity. The active fractions were characterized by UV-visible electron spectral analysis, circular dichroism analysis, Fourier transform infrared spectroscopy, high-performance liquid chromatography, electrospray ionization tandem mass spectrometry, and nuclear magnetic resonance spectroscopy. Two antitumor-active fractions of a flavonoid nature were isolated and chromatographically purified. On the basis of the nuclear magnetic resonance data, the aglycone fragment of the main component of one fraction was found to be structured as 2-(3,4-dimethoxyphenyl)-7-hydroxychroman-4-one, or 3',4'-dimethoxy-7- hydroxyflavanone. The antitumor effect of the most active fraction containing 7-O-glucoside of apigenin, glycoside 7,3'-di-O-luteolin and trace amounts of eupatilin against renal carcinoma A498 cells was manifested in its cytotoxic, cytostatic, apoptotic and autophagosomal activities. In addition, we found 3-(1-2)-glucoside of soyaspogenol B, which is a pentacyclic triterpenoid in the structure.

Dietary pot marigold (Calendula officinalis) extract improved the growth performance, expression of digestive enzymes, antioxidant enzymes and immune-related genes in rainbow trout (Oncorhynchus mykiss)

Dietary pot marigold (Calendula officinalis) extract improved the growth performance, expression of digestive enzymes, antioxidant enzymes and immune-related genes in rainbow trout (Oncorhynchus mykiss)

The Effect of Aerial Part of Melissa Officinalis L. Hydro-Alcoholic Extract on Pituitary- Gonadal Axis Function in Diabetic Male Mice

Background: Melissa officinalis L. ( lemon balm) is one of the more widely cultivated medicinal and aromatic plants that has long been used in traditional medicine to treat many disorders. The present study investigates Melissa officinalis L. hydro-alcoholic extract regarding pituitary-gonadal axis in diabetic mice. Methods: 45 NMRI mice with a mean weight of 35.6±4.5 g were divided into five groups: control group (0.2 ml of physiological serum intraperitoneally injection), diabetic mice (without treatment), and three experiment groups (diabetic groups receiving 50, 100 and 200 mg/kg of Melissa officinalis extract intraperitoneally injection). Melissa officinalis extract was injected intraperitoneally for 14 days. At the end of the experiment, blood samples were taken to determine the biochemical indicators level (glucose, LH, FSH, and testosterone), and the left testicle was weighed and examined histologically. Results: The results showed that the lowest amount of glucose and the highest level of LH were observed in the treatment group at a dose of 100 mg/kg of Melissa officinalis extract. The highest level of FSH was observed at a dose of 200 mg/kg. Histological study of the testis showed a more favorable condition in the experimental group of 200 mg/kg of lemon balm extract (P<0.05). Conclusion: It can be concluded that the use of Melissa officinalis extract is efficient in reducing glucose, improving the levels of LH, FSH, and testosterone in diabetic mice, affecting testicular weight, and improving testicular tissue indices and reproductive function of rats.

Neurohistopathological Alterations Induced by Clitoria Ternatea and Emblica Officinalis Extracts in Diabetic Male Wistar Rats

Neurohistopathological Alterations Induced by Clitoria Ternatea and Emblica Officinalis Extracts in Diabetic Male Wistar Rats

Unlocking the Antioxidant Potential of Calendula Officinalis: A Comparative Study of Extraction Methods

Calendula officinalis which is also known as marigold is a species of plant in the daisy family that has antioxidant, antiinflammatory, cytotoxic, and antitumor properties. In this study we tried to analyze the antioxidant activity of calendula officinalis flowers extract. Three different extraction methods that are soxhlet, maceration, and ultrasonic procedures are applied to the calendula officinalis flowers and antioxidant activities for each extract is analyzed and compared. Methods: In this study, soxhlet, maceration and ultrasonic extraction methods and ethanol solvent are used to obtain calendula officinalis extracts. The antioxidant activity of the extracts with different concentration are investigated under DPPH solution. Results: DPPH radical scavenging activity for the extract obtained using soxhlet procedure is higher than the other two procedures that are maceration and ultrasonic. With increasing calendula officinalis extract concentration, it is observed that the antioxidant activity is also increased as expected. Conclusions: In conclusion, calendula officinalis flowers perform very high antioxidant property and the soxhlet method can be considered as the best method for the extraction. Further researches for the application of the extract can be studied.

Effects of morroniside isolated from Cornus officinalis fruits on functional gastrointestinal disorders and gastric ulcer in mice

The dried fruits of Cornus officinalis (Cornaceae) are used in Kampo medicine (e.g. Hachimigan and Goshajinkigan) to treat senile osteoporosis, diabetes, gastric atony, frequent urination, and diarrhea/constipation associated with aging. The present study investigated the effects of a C. officinalis fruit extract and morroniside, an iridoid compound from isolated these fruits, on the reduction in gastric emptying small intestinal motility caused by 5-hydroxytryptamine (5-HT) and 1-(3-chlorophenyl) biguanide (5-HT3 receptor agonist), and gastric ulcers induced by 150 or 75 mM HCl/90 % EtOH (HCl-EtOH) and/or 5-HT in mice. C. officinalis extract (500 mg/kg) and morroniside (20 and 50 mg/kg) suppressed the reduction in gastric emptying induced by 5-HT- and 5-HT3 agonist. C. officinalis extract, morroniside and 5-HT3 receptor antagonist (ramosetron) attenuated 5-HT-induced diarrhea. Furthermore, morroniside (20 and 50 mg/kg) prevented EtOH/HCl-induced gastric ulcers and those caused by 5-HT. Morroniside (20 and 50 mg/kg) attenuated elevations in the plasma levels of corticosterone, corticotropin-releasing factor (CRF), and adrenocorticotropic hormone (ACTH) in 75 mM HCl/90 % EtOH- and 5-HT-treated mice. The results obtained herein suggest the potential of morroniside as an effective treatment for irritable bowel syndrome, such as diarrhea and functional dyspepsia (reductions in gastric emptying and small intestinal motility), caused by 5-HT. The present study suggests a role for morroniside in the regulation of elevations in CRF, ACTH, and corticosterone levels through hypothalamic-pituitary-adrenal axis activity induced by stress loading, such as a 5-HT treatment and/or HCl/EtOH stimulation.

Hypoglycemic and antioxidant activities of Jasminum officinale L. with identification and characterization of phytocompounds

The utilization of plant-derived chemicals with anti-diabetic properties is widely promoted for its advantageous tactics in managing diabetes, as they are cost-effective and have minimal or no adverse effects. Therefore, this work investigates the medicinal plant Jasminum officinale L. leaves by extraction and bio-guided fractionation. The ethyl acetate fraction showed a higher yield of 36.4 %. A phytochemical test on Jasminum officinale confirmed flavonoids, saponins, phenols, and tannins. The highest total phenol and flavonoid contents in the ethyl acetate fraction of J. officinale are 103.01 ± 1.1 mg GAE/g and 80.29 ± 1.03 mg QUE/ value found in methanol crude extract. Furthermore, HPTLC analysis of the ethyl acetate fraction detected the existence of flavonoids (kaempferol) and phenols (gallic acid, quercetin, and rutin). The compounds detected at the greatest concentrations in the LC-M/MS analysis of the ethyl acetate fraction were cirsiliol, kaempferol, and 2-tridecanone. Additionally, J. officinale (IC50 33.845 ± 1.09 μg/mL) demonstrated the highest DPPH scavenging activity in EAF like that of ascorbic acid (IC50 22.27 ± 0.96 μg/mL). Also, in the FRAP assay, the IC50 of this fraction is 15.14 ± 0.25 μM Fe equivalents. In the range of alpha-amylase deactivating action, from 13.25 % to 74.51 %, and IC50 value (47.40 ± 0.29 μg/mL) was significantly higher in the ethyl acetate fraction of J. officinale leaf extract. Moreover, J. officinale leaf extract had a substantially higher retention of glucose level (23.92 ± 0.85 % to 87.21 ± 0.6 %), significantly higher anti-inflammatory activity with the lowest IC50 value (66.00 ± 1.84), and lipid peroxidation (IC50 value 34.67 ± 1.69) by utilizing egg yolk as a substrate for lipids. Overall, the study revealed that J. officinale has considerable anti-diabetic characteristics. However, further comprehensive research is necessary to ascertain the medicinal purposes of J. officinale and its chemical components, pharmacological effects, and clinical uses.

INCREASING THE SHELF-LIFE TROUT FILLETS BY SODIUM CASEINATE-PERSIAN GUM BIOCOMPOSITE FILM INCORPORATED WITH GINGER EXTRACT

The effects of sodium caseinate (SC)-Persian gum (PG) films enriched with Zingiber officinale extract (ZOE) were investigated on the quality of rainbow trout over a 16 day at 4°C. The trout filets were divided to 4 groups as uncoated, coated with SC-PG, SC-PG-1% ZOE and SC-PG-1.5% ZOE. Sensorial, chemical and microbial characteristics of trout samples were evaluated on 0, 4, 8, 12 and 16 days of storage. GC-MS analysis exhibited that ZOE is rich in phenolic compounds including zingiberene and cis-6-shogaol. Active films embedded with 1.5% of ZOE revealed a remarkable decline in bacterial growth over the storage time. Wrapping with SC-PG-1.5%ZOE composite film tended to delay the elevation of thiobarbituric acid and peroxide value. Samples containing 1.5% ZOE were mostly preferred by sensory panelists. Based on the results of the present study, the edible films were suitable candidates for preserving quality properties and extending the shelf life of rainbow trout fillets.

Therapeutic Effects of Althaea officinalis L. and Metformin on Estradiol-Induced Polycystic Ovary Syndrome in Rats: Insights into The PI3K/AKT Pathway, Inflammation, and Oxidative Stress.

Polycystic ovary syndrome (PCOS) is one of the most important causes of infertility, irregular menstrual cycles, and anovulation in women. The current study aimed to investigate the therapeutic effects of Althaea officinalis L. (A. officinale) extract on PCOS in rats. In this experimental study, 70 rats in 7 groups (n=10/group) were studied for three weeks as follows; healthy control (HC), patient (PCOS), metformin (PCOS+MET), A. officinale treatment (PCOS+250 and 500 mg/kg A. officinale) and synergistic (PCOS+MET+250 and 500 mg/kg A. officinale) groups. Luteinizing hormone (LH), folliclestimulating hormone (FSH), progesterone (P) and testosterone (T) levels as well as inflammatory cytokines were measured. Total antioxidant capacity and lipid peroxidation levels were analyzed in ovarian tissue. The expression of GLUT-4, AKT, PI3K, PTEN genes and Ki-67 was assessed by real-time polymerase chain reaction (PCR) and immunohistochemistry, respectively. A. officinale alone and especially in combination with MET moderated inflammatory and antioxidant parameters compared to the PCOS and MET groups. A. officinale in synergistic groups increased the apoptosis of granulosa cells by activating the PI3K/AKT pathway, resulting in a rise in the number of Ki-67 positive cells (P<0.05). Furthermore, following A. officinale treatment the LH/FSH rate decreased and FSH and P increased (P<0.05). Also, A. officinale extract could effectively normalize estrus cycle duration close to the normal group. The extract of A. officinale, in combination with metformin, can enhance the hypothalamic-pituitaryovary (HPO) axis with synergistic anti-inflammatory and antioxidant effects. Additionally, the extract showed apoptotic effect on cystic granulosa cells.

Characterization, biological activity, and anticancer effect of green-synthesized gold nanoparticles using Nasturtium officinale L.

BackgroundNanostructured materials used have unique properties and many uses in nanotechnology. The most striking of these is using herbal compounds for the green synthesis of nanoparticles. Among the nanoparticle types used for green synthesis, gold nanoparticles (AuNPs) are used for cancer therapy due to their stable structure and non-cytotoxic. Lung cancer is the most common and most dangerous cancer worldwide in terms of survival and prognosis. In this study, Nasturtium officinale (L.) extract (NO), which contains biomolecules with antioxidant and anticancer effects, was used to biosynthesize AuNPs, and after their characterization, the effect of the green-synthesized AuNPs against lung cancer was evaluated in vitro.MethodsUltraviolet‒visible (UV‒Vis) spectrophotometry, scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS), multiple analysis platform (MAP), and Fourier transform infrared (FT-IR) spectroscopy analyses were performed to characterize the AuNPs prepared from the N. officinale plant extract. Moreover, the antioxidant activity, total phenolic and flavonoid contents and DNA interactions were examined. Additionally, A549 lung cancer cells were treated with 2–48 µg/mL Nasturtium officinale gold nanoparticles (NOAuNPs) for 24 and 48 h to determine the effects on cell viability. The toxicity of the synthesized NOAuNPs to lung cancer cells was determined by the 3-(4,5-dimethylthiazol-2-il)-2,5-diphenyltetrazolium bromide (MTT) assay, and the anticancer effect of the NOAuNPs was evaluated by apoptosis and cell cycle analyses using flow cytometry.ResultsThe average size of the NPs was 56.4 nm. The intensities of the Au peaks from EDS analysis indicated that the AuNPs were synthesized successfully. Moreover, the in vitro antioxidant activities of the NO and NOAuNPs were evaluated; these materials gave values of 31.78 ± 1.71% and 31.62 ± 0.46%, respectively, in the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay at 200 g/mL and values of 25.89 ± 1.90% and 33.81 ± 0.62%, respectively, in the 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) assay. The NO and NOAuNPs gave values of 0.389 ± 0.027 and 0.308 ± 0.005, respectively, in the ferrous ion reducing antioxidant capacity (FRAP) assay and values of 0.078 ± 0.009 and 0.172 ± 0.027, respectively, in the copper ion reducing antioxidant capacity (CUPRAC) assay. When the DNA cleavage activities of NO and the NOAuNPs were evaluated via hydrolysis, both samples cleaved DNA starting at a concentration of 25 g/mL in the cell culture analysis, while the nanoformulation of the NO components gave greater therapeutic and anticancer effects. We determined that the Au nanoparticles were not toxic to A549 cells. Moreover, after treatment with the half-maximal inhibitory concentration (IC50), determined by the MTT assay with A549 cells, we found that at 24 and 48 h, while the necrosis rates were high in cells treated with NO, the rates of apoptosis were greater in cells treated with NOAuNPs. Notably, for anticancer treatment, activating apoptotic pathways that do not cause inflammation is preferred. We believe that these results will pave the way for the use of NOAuNPs in in vitro studies of other types of cancer.ConclusionIn this study, AuNPs were successfully synthesized from N. officinale extract. The biosynthesized AuNPs exhibited toxicity to and apoptotic effects on A549 lung cancer cells. Based on these findings, we suggest that green-synthesized AuNPs are promising new therapeutic agents for lung cancer treatment. However, since this was an in vitro study, further research should be performed in in vivo lung cancer models to support our findings and to explain the mechanism of action at the molecular level.

Herbal Amara extract induces gastric fundus relaxation via inhibition of the M2 muscarinic receptor.

Impaired gastric accommodation is one of the most frequent symptoms of functional dyspepsia. The safety and efficacy of conventional treatments remain to be proven and alternative herbal therapies have been proposed to alleviate gastrointestinal symptoms. This preclinical study examined the role of herbal Amara extract (containing Artemisia absinthium, Centaurium erythraea, Cichorium intybus, Gentiana lutea, Juniperus communis, Achillea millefolium, Peucedanum ostruthium, Salvia officinalis, and Taraxacum extracts) on gastric (fundus) accommodation and the possible implication of muscarinic receptors in its regulation. The effect of Amara extract on fundus motility was investigated in organ baths of smooth muscle strips isolated from the fundus of guinea pigs, and the role of the muscarinic receptor pathway was evaluated using functional and radioligand binding assays in cell lines expressing the M2 or M3 muscarinic receptor. Amara extract inhibited carbachol-induced contraction of guinea pig smooth muscle strips in a dose-dependent manner. This relaxant effect was not affected by the M3 antagonist J-104129. Amara extract also inhibited M2, but not M3, receptor activity in CHO-K1 cells (IC50 219 μg mL-1), and specifically bound the M2 receptor (IC50 294 μg mL-1). Of the nine herbal components of Amara extract, Juniperus communis, P. ostruthium, and Salvia officinalis inhibited M2 receptor activity (IC50 32.0, 20.8, and 20.1 μg mL-1, respectively), and P. ostruthium was sufficient to reverse carbachol-induced exvivo contraction of guinea pig fundic smooth muscles. Amara extract relaxes gastric smooth muscles by inhibiting the M2 muscarinic receptor. This study suggests the potential benefit of Amara extract for patients with impaired gastric accommodation.

Effect of the exposure period and concentration of aqueous and alcoholic zingiber (Zingiber officinale) extract on the mean of mortality for hydatid cyst's protocolises.

To determine the anti-protocolises effect of aqueous and alcoholic zingiber extract. The present experimental study was conducted from 01, July 2021 to 15. December, 2021 at the College of Education for Pure Sciences, Iraq, and comprised 25mg/mL, 50mg/mL, 100mg/mL and 200mg/mL concentrations of both aqueous and alcoholic extracts of zingiber officinale that were prepared and used in vitro on hydatid cyst protocolises with 10min, 20min, 30min, 40min, 50min and 60min exposure times. The data was analysed using statistical package for the social sciences (SPSS) version 10 by using ANOVA and t- test to determine the differences between groups. The concentration of 200mg/ml was more efficient against the protocolises for aqueous extract, while the alcoholic extract was effective at both 100mg/ml and 200mg/ml concentrations. There was a positive relationship of the degree of killing with both exposure time and concentration. Zingiber officinale could be a potential bioactive natural product and its active constituents could be isolated and used as anti-protoscolex without any side effects.

Studying the composition and anti-radiation properties of sage (Salvia officinalis L.) in wheat seeds

Aim. The purpose of the research was to study the chemical composition, develop methods for obtaining an extract from the leaves of Salvia officinalis L. and study their anti-radiation properties of irradiated wheat seeds of the Guneshli variety. Methods. Using qualitative reactions and chromatography, the content of lipids, essential oils, diterpene acids, phenolic compounds, macro- and microelements in plants was determined. Wheat seeds were irradiated using a URI installation (K-25) at a dose rate of 13.4 rad/sec, at a dose of 200 Gy. The amount of chlorophyll pigments, carotenoids, and malondialdehyde was measured using a spectrophotometer. Chlorophyll fluorescence in leaves was determined using a MINI-PAM device. Results. According to the results of morphological and physiological-biochemical parameters of seedlings, 0.01 % and 0.001 % Salvia officinalis extract has a positive effect on growth and development, increases the maximum quantum yield of PS II and reduces the yield of lipid peroxidation product. Conclusions. It has been established that Salvia officinalis extract has a radioprotective effect and can be used as a radioprotector for some agricultural plants.

Green synthesis and antimicrobial evaluation of Ag/TiO2 and Ag/SeO2 Core-Shell nanocomposites using r. Officinalis extract: A combined experimental and docking study

The escalating threat of antibiotic resistance necessitates the development of novel, sustainable antibacterial agents. This study investigates the potential of utilizing Rosmarinus officinalis leaf extracts to synthesize Ag/TiO2 and Ag/SeO2 nanocomposites. R. officinalis extract, a rich source of phenolic and flavonoid compounds, effectively and safely acts as a reducing and capping agent for the green synthesis of Ag/TiO2 and Ag/SeO2 nanocomposites. Characterization of nanocomposites revealed the nanoparticles’ nanoscale size, ranging from 43.34 to 96.58 nm for Ag/TiO2 and 8.04 to 21.72 nm for Ag/SeO2. Both types of nanoparticles exhibited a spherical morphology and distinct crystalline structure. The nanoparticles demonstrated significant antibacterial properties against multiple bacterial strains. The effective concentration for antibacterial activity was determined to be 30.99 mg/mL for Ag-TiO2 and 32.41 mg/mL for Ag-SeO2 nanoparticles. The surface charge of the nanoparticles was measured to be −14.0 mV for Ag-TiO2 and −15.4 mV for Ag/SeO2. Molecular docking simulations investigated the interactions between rosmarinic acid, its derivatives, and the antibiotic cefotaxime with a bacterial protein (e.g., DNA gyrase). These simulations provided insights into the distinct antibacterial mechanisms of these compounds. Briefly, this research highlights the potential of R. officinalis-derived nanocomposites as promising antibacterial agents. The eco-friendly synthesis and promising results pave the way for their development and application in medicine, biochemistry, and environmental fields.

Enhancing Dental Alginate with Syzygium aromaticum, Zingiber officinale and Green Silver Nanoparticles: A Nature-Enhanced Approach for Superior Infection Control.

The study addresses the challenge of cross-infection in dentistry, focusing on improving disinfection protocols for dental hydrocolloid gel materials. This research aimed to incorporate chlorhexidine, natural plant extracts, and green-synthesized silver nanoparticles (AgNPs) into dental alginate to enhance safety and hygiene standards in dental practices. Conventional dental alginate served as the control, with experimental groups including alginate modified with 0.2% chlorhexidine (CHX-group) and alginate incorporating AgNPs synthesized from Syzygium aromaticum (SA) and Zingiber officinale (ZO) extracts (SA + AgNPs and ZO + AgNPs groups). Plant extracts were analyzed via GC/MS to confirm their composition. UV-visible spectroscopy, SEM, and EDX characterized the synthesized AgNPs. Antimicrobial efficacy against Candida albicans, Streptococcus mutans, and methicillin-resistant and methicillin-sensitive Staphylococcus aureus was evaluated using agar well diffusion assays. The dimensional accuracy of alginate impressions was assessed according to ISO 21563:2021 standards. Chemical analysis of SA and ZO extracts identified 60 and 43 active compounds, respectively, supporting their use in AgNP synthesis. UV-visible spectroscopy, SEM, and EDX confirmed the formation of spherical AgNPs using SA and ZO extracts. Modified groups showed inhibitory activity against Streptococcus mutans and methicillin-resistant (MRSA) and methicillin-sensitive Staphylococcus aureus (MSSA), in contrast to the unmodified control. Both AgNP-modified groups demonstrated efficacy comparable to the CHX-group against MRSA and MSSA, with SA + AgNP showing superior performance against C. albicans. The dimensional accuracy of all groups was within clinically acceptable ranges as reported in the literature (0.027-0.083 mm). CHX, silver nitrate, and green-synthesized AgNPs present promising options for developing self-disinfecting alginate impression materials. Utilizing plant extracts in AgNP synthesis offers a safe, efficient, and synergistic approach between metal ions and phytotherapeutic agents. This approach could potentially enhance disinfection efficacy without compromising material performance, improving dental safety and hygiene.

Comparative in vitro Study of Antimicrobial, Antibiofilm and Quorum Sensing Inhibitory Activities of Hypericum calycinum L. and Parietaria officinalis L. Extracts

Aim: This study aims to elucidate both the anti-virulence and antimicrobial effects of ethanol extracts from Hypericum calycinum L. and Parietaria officinalis L. Material and Methods: Antimicrobial activity was evaluated using the well diffusion method against five bacteria and two yeast isolates involved in human urinary tract infections (UTIs). The potential of the extracts to inhibit quorum sensing (QS), was assessed using the biosensor strain Chromobacterium violaceum ATCC 12472. Additionally, the antibiofilm activities were investigated using a microplate biofilm assay on Escherichia coli and Pseudomonas aeruginosa. Results: H. calycinum exhibited the highest inhibitory effect at a concentration of 100 mg/mL against Candida albicans with an inhibition zone of 24.5±0.71 mm, while P. officinalis showed its highest effect at the same concentration against E. coli with an inhibition zone of 15.5±0.71 mm. Overall, H. calycinum demonstrated stronger antimicrobial activity compared to P. officinalis. Both plant extracts inhibited QS at similar levels, with inhibition zones ranging between 10-12 mm. The antibiofilm effect varied depending on the bacterial species, but notably, P. officinalis extract exhibited over 80% antibiofilm efficacy against E. coli at all concentrations. Conclusion: This study demonstrates that H. calycinum L. and P. officinalis L. are potent antimicrobial agents against UTI pathogens. While their anti-QS efficacy is not exceptional, the significant inhibition of E. coli biofilm formation underscores their potential as formidable agents. Designed as a fundamental study, it highlights the promising antimicrobial properties of these plant extracts and marks the first investigation into their capabilities as QS and biofilm-preventive agents.

Total Chemical Components, Biological Activity and Chromatographic Analyzes of Styrax officinalis Fruit Extract

This study aims to investigate the total chemical component, biological activity and chromatographic analysis of the fruit extract of Styrax officinalis, obtained from local markets trading local products in the Gaziantep region. Methanol was used to extract the pericarp and seed samples that make up the fruit. Fruit pericarp extract with high phenolic content showed a significant capacity in all antioxidant activity analyses. No antibacterial activity of the extracts was observed against the standard strains used. Regarding phenolic acid content, the most abundant phenolic acid in the fruit pericarp extract was chrysin and t-cinnamic acid. In contrast, in the seed extract, it was t-cinnamic acid and quercetin. HPLC results revealed that succinic acid was the main component of organic acid contents in all extracts. The fact that the main components determined from all analyses have various strong pharmacological activities reveals the importance of the widespread use of S. officinalis.

Demonstrating the staining ability of &lt;i&gt;Zingiber officinale&lt;/i&gt; and &lt;i&gt;Curcuma longa&lt;/i&gt; as replacement to Eosin Y in EA50

Nicholas Papanicolaou developed the Pap stain, a combination of three major stains used for cervical smears. Eosin-Azure (EA50), one of these stains, includes Eosin Y, Light Green SF, and Bismarck brown. This study explores the use of Curcuma longa extract as a substitute for Eosin Y in EA50. Cervical smears from premenopausal women were collected and stained using both the standard Papanicolaou stain and a modified version where Eosin Y was replaced with Curcuma longa extract. The modified stain's effectiveness was assessed based on the quality of staining of superficial cells. The modified stain (T.A- extract) successfully stained and highlighted superficial cells, while the Zingiber officinale extract (Z.A) performed poorly in staining the nuclei and cytoplasm. The staining ability of the Curcuma longa extract was found to be 100% comparable to the traditional Papanicolaou stain. Staining aims to clearly demonstrate cellular components for diagnostic purposes, and many existing stains are long-established but require modifications for better application. Using local alternatives can enhance availability and affordability. Curcuma longa is readily available and, based on our findings, can effectively replace Eosin Y in Eosin-Azure stains. Further research into the dye components of herbal products and their staining capabilities could lead to cost-effective, locally sourced alternatives to imported stains.