Zataria Research Articles

Rosmarinus officinalis and Zataria multiflora extracts enhanced antibacterial activity of ciprofloxacin against methicillin-resistant Staphylococcus aureus.

The study investigates the antibacterial potential of hydroalcoholic extracts from Rosmarinus officinalis and Zataria multiflora, combined with ciprofloxacin, against methicillin-resistant Staphylococcus aureus (MRSA). Initial screening showed promising results, leading to further exploration of the synergistic effect of the extracts and ciprofloxacin. The combination of the two extracts had an additive effect, while the combination of each extract with ciprofloxacin resulted in partial synergism. The most significant synergistic effect was observed against MRSA 9, with a 3200-fold reduction in the MIC value of ciprofloxacin. The similar inhibitory concentration of the extracts for all MRSA strains suggests these non-antibiotic agents have a broad spectrum of activity against MRSA. This offers a promising avenue for developing new therapeutic approaches to tackle drug-resistant bacterial infections. The results highlight the potential of combining R. officinalis and Z. multiflora extracts with ciprofloxacin to enhance antibacterial efficacy against MRSA strains.

Combination of medicinal plants with antibiotics against Klebsiella pneumoniae and Acinetobacter baumannii

Background and aims: One essential plant-based strategy to deal with infections is antimicrobial synergism, which can make antimicrobials more efficient. The aim of this study was to investigate the interaction between these extracts and two widely used antibiotics, meropenem and gentamicin, on two multidrug-resistant (MDR) bacteria, K. pneumoniae and A. baumannii, in vitro. Methods: Different concentrations of Rosa damascena Mill., Malva sylvestris L., and Zataria multiflora Boiss. hydroalcoholic extracts (2-fold serial dilution from 131072 to 256 μg/mL) were administered against two MDR bacteria, and their combination with gentamicin and meropenem (serial dilution from 32 to 0.015 μg/mL) was investigated by the resazurin-based microdilution and the checkerboard method. The phytochemical properties of the extracts were also examined, and the total phenolic content (TPC), total flavonoid content (TFC), anthocyanin content, and antioxidant capacity of the extracts were determined. Results: Z. multiflora and R. damascena showed high antibacterial activity, and their minimal inhibitory concentrations on Acinetobacter baumannii were 1024 and 2048 μg/mL, respectively. Z. multiflora also had high TFC, TPC, and antioxidant activity and demonstrated additive interaction with meropenem and gentamicin with fractional inhibitory concentrations of 1 and 0.75, respectively. Conclusion: We suggest the potency of Z. multiflora-antibiotic combinations in treating MDR A. baumannii after future clinical studies.

Green-synthesized silver nanoparticles from Zataria multiflora as a promising strategy to target quorum sensing and biofilms in Pseudomonasaeruginosa

The global challenge to human health is significantly heightened by the resistance of harmful bacteria to antimicrobial treatments. Given the limited advancement in developing new antimicrobial medications, exploring innovative strategies is imperative to tackle the challenge of resistance to multiple drugs. Furthermore, there is a growing emphasis on the environmentally friendly synthesis of nanoparticles with potent medicinal attributes, specifically those targeting virulence, to combat the rise of multidrug resistance. Focusing on the inhibition of virulence factors and biofilms influenced by quorum sensing has become a promising and novel strategy in the development of anti-infective drugs. An aqueous extract of Zataria multiflora leaves was used to create green-synthesized silver nanoparticles, or AgNPs. X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), and UV–visible absorption spectroscopy were used to characterize the AgNPs. The impact of AgNPs on the virulence factors and biofilms of Pseudomonas aeruginosa PAO1, mediated by quorum sensing, was assessed at concentrations below the minimum inhibitory concentration (sub-MIC). Sub-MIC concentrations of Green-synthesized AgNPs inhibited various P. aeruginosa virulence factors, including bacterial motility (89 % inhibition), pyocyanin production (81.48 % inhibition), pyoverdin production (55.80 % inhibition), elastase activity (87.43 % inhibition), exoprotease activity (75.60 % inhibition), and rhamnolipid production (71.28 % inhibition). Additionally, these AgNPs demonstrated 80 % inhibition of P. aeruginosa biofilms. The in vitro efficacy of green-synthesized AgNPs against P. aeruginosa can be utilized for the creation of alternative therapeutic agents for managing bacterial infections, particularly for topical application in cases such as wound infections. Additionally, they can be used for surface coating to inhibit the attachment of bacteria to medical devices.

Investigating Anti-cancer, Anti-oxidant and Immunomodulatory Effects of Essential Oils: Focusing on Oliveria Decumbens and Zataria Multiflora Essential Oils

Background: Cancer therapy necessitates innovative approaches with enhanced efficacy and reduced side effects. Essential oils have gained attention because of their diverse biological properties and relatively low toxicity. Zataria multiflora essential oil (ZEO) and Oliveria decumbens essential oil (OEO) exhibit promising anti-cancer effects, particularly in modifying oxidative stress and inflammation. Both oils boast complex compositions rich in bioactive compounds, including oxygenated monoterpenes and phenolic compounds like carvacrol and thymol. Hence, this study investigates essential oils’ anti-cancer, anti-oxidant and immunomodulatory effects, focusing on ZEO and OEO. Materials and Methods: This review briefly considers the intricate mechanisms of several essential oils, encompassing anti-oxidant, anti-inflammatory and anti-cancer properties. Then the review delves into the multifaceted mechanisms underlying the anti-cancer properties of ZEO and OEO. Results: Studies showcase the ability of ZEO and OEO to induce apoptosis in cancer cells through various pathways, such as mitochondrial dysfunction, reactive oxygen species (ROS) generation and DNA damage while sparing normal cells. Our studies further validated the immunomodulatory effects of OEO and ZEO in tumor-bearing mice, resulting in reduced tumor volume. Additionally, this review confirmed the synergistic effect of ZEO when combined with doxorubicin to inhibit cancer cells. Conclusion: Some essential oils, such as ZEO and OEO, present promising natural compounds in cancer therapy, offering diverse mechanisms of action targeting various aspects of tumor biology.

Acute and sub-acute Toxicity Profiles of Anchusa strigosa and Zataria Multiflora: Insights from wistar albino rats

The present study aims to assess the acute and subacute toxicity of the hydro-alcoholic extracts of Anchusa strigosa (leaves) and the aerial parts of Zataria multiflora Boiss in Wistar albino rats. The crude extracts of Anchusa strigosa (leaves) and the aerial parts of Zataria multiflora Boiss were prepared in 70% ethanol. Systematic tests for acute toxicity were performed at varying dosages of 100, 250, and 500 mg/kg, while for subacute toxicity, a dose of 600 mg/kg was orally given to Wistar albino rats. At the end of acute and sub-acute toxicity studies, biochemical parameters, hematological analysis, and histopathological analysis showed no significant difference in the body weight, abnormalities, or organ damage of the rats compared to the untreated rats (control). Also, there were no results of death recorded in rats. These findings indicated that the medium-term oral administration of Anchusa strigosa (leaves) and the aerial parts of Zataria multiflora Boiss after the treatment does not cause toxicity and provides assurance regarding their suitability for potential therapeutic applications in both acute and subacute forms.

Expression of the changes in essential oil components of Shirazi thyme (Zataria multiflora Boiss.) as affected by various drying methods

The purpose of this research was to investigate the impact of various drying techniques on the quality characteristics of Shirazi thyme (Zataria multiflora Boiss.) using a completely randomized design with three replications. The treatments included fresh samples, shade-drying (SHD), sun-drying (SD), oven and vacuum-drying (OD and VD) each at three different temperatures (45, 55, and 65 °C), and microwave-drying (MD) at three different power levels (200, 400, and 600 W). The results indicated that vacuum and oven-drying at 45 °C were effective in preserving valuable secondary metabolites compared to traditional drying methods. The essential oil (EO) content was lowest in the microwave-drying at 600 W (1.3 %), and highest in vacuum-drying at 45 °C (2.99 %). Vacuum-drying at 45 °C also produced the highest levels of carvacrol (72.5 %) and thymol (7.21 %) content, while the lowest levels were found in fresh samples. The main components in the EO were monoterpene hydrocarbons (11.47–27.33 %), oxygenated monoterpenes (74.81–86.9 %), and oxygenated sesquiterpenes (76.50–86.50 %). The results showed that the amount of sesquiterpene hydrocarbons and oxygenated monoterpenes were higher at low temperatures. Furthermore, the color parameters showed changes based on the drying methods, with vacuum-drying at 45 °C increasing the L* parameter (lightness), vacuum-drying at 65 °C increasing the a* parameter)brightness(, and oven-drying at 45 °C increasing the b* parameter)greenness). Understanding the different methods and operations of drying Shirazi thyme can provide valuable insight for its professional application and development in food and pharmaceutical industries.

The use of herbal medicine in patients with inflammatory bowel disorders in Iran: A cross-sectional study

IntroductionThe use of complementary and alternative medicine, particularly herbal medicine, is increasing, especially in chronic disorders. This study aims to identify common herbal medicines used by patients with inflammatory bowel disease, and to investigate their relationship with the quality of life, disease severity, and levels of anxiety, stress, and depression experienced by these patients. MethodsA total of 104 eligible patients with inflammatory bowel disease and in the middle years of life (20- 60 years old) participated in this cross-sectional study. Data collection was conducted using various assessment tools, i.e. a self-administered ethnomedicine questionnaire, Partial Mayo scoring index assessment, Crohn's disease activity index, Quality of Life Questionnaire, and Depression, Anxiety and Stress Scale. ResultsThe findings of the present study revealed that 61.5% of the patients surveyed commonly used herbal medicine to alleviate their symptoms in the past year. Among the various herbs, Matricaria chamomilla L., Zataria multiflora Boiss., and Mentha Spicata L. were found to be most commonly used. Furthermore, a significant association was identified between herbal medicine use and age, Body Mass Index, marital status, level of education, alcohol consumption, Quality of Life, and severity disorder scores of the patients. ConclusionOur results suggested a significant association between herbal medicine use and lower severity disorder scores and higher quality of life in patients with inflammatory bowel disease. However, these findings may not be generalizable to all patients with inflammatory bowel disease, or to patients in other geographical regions.

Effects of Thymus vulgaris, Zataria multiflora, Salvia verticillata, and ε-polylysine on shelf-life extension of sweet basil leaves

ABSTRACT Due to basil’s short shelf life and the insufficient research on utilizing plant extracts and ɛ-polylysine as a natural preservative for vegetables, this research was to investigate different concentrations of plant extracts of Thymus vulgaris, Zataria multiflora, Salvia verticillata, and ε-Polylysine on increasing the shelf life of basil during cold storage at a temperature of 8°C over 12 days. All the treatments had less weight loss compared to the control group at the end of the storage period. ε-Polylysine (3 ml/L) and T. vulgaris (2 g/L) treatments effectively reduced spoilage symptoms by decreasing the activity of degrading enzymes like cellulase and polyphenol oxidase. Additionally, these treatments increased the activity of enzymes such as catalase, which inhibits the production of reactive oxygen species. By preserving phenolic compounds, antioxidant activity, ascorbic acid, and reducing microbial load, the ε-Polylysine (3 ml/L) and T. vulgaris (2 g/L) treatments extended the shelf life and quality of basil. The results indicate that using ε-Polylysine (3 ml/L) and T. vulgaris (2 g/L) treatments effectively preserved the sensory attributes of basil, including freshness, appearance, overall acceptability, and odor, throughout storage. Furthermore, these treatments reduced spoilage, extended shelf life, and improved the nutritional value of basil during storage.

Therapeutic Effect of Avishan-e-Shirazi (Zataria Multiflora Boiss) Root Extract on Oxidative Stress Markers in Moderate Asthmatic Patients

Avishan-e-Shirazi (Zataria Multiflora Boiss) is a plant widely recognised for its medicinal and culinary purposes. Objectives: To evaluate the therapeutic effect of plant’s root extract on pulmonary function tests and oxidative stress markers among moderate Asthma tic patients. Methods: A total participant of 66 patients with pulmonary disease, 30-40 age, were selected for the 2-month research trial. Individuals were enrolled and distributed equally in two groups, 33 each. In the control group, 53.8% of individual were man, and 46.2% were women. In the treatment group, 49.1% of participants were man, and 50.9% were women. The groups G0 was considered as a control group with no root extract, and group G1 where conventional treatment and root extract were advised to participants. The participants were selected from the Jinnah Hospital, Pakistan. The 5mg/kg/day dried root extract supplements 3 times a day were given to the individuals daily for 2 months. Results: The mean age group of Asthma tic patients enrolled in the study was 35 ± 2.98 years in G0, and in G1, it was 34 ± 3.05. The mean BMI was 31.34 and 30.98 kgm-2 in both groups, respectively. There was a significant improvement in FEV1 levels and MDA enzyme levels with a p-value less than 0.05. The NO2 levels were also better. Similarly, the enzymes thiolase and SOD levels also improved with a p-value less than 0.05 in the treatment group. Conclusions: The current study concluded that Avishan-e-Shirazi root extract could improve the pulmonary function and inflammation among Asthma patients.

Antimicrobial Efficacy of Saline, Chlorhexidine, and Zataria Multiflora and Mentha Piperita Essential Oils in Root Canal Irrigation of Primary Molars.

Objectives: This study aimed to compare the antimicrobial efficacy of saline, 0.5% and 2% Zataria multiflora (Z. multiflora) essential oil, 0.5% and 2% Mentha piperita (M. piperita) essential oil, and 0.2% chlorhexidine (CHX) as root canal irrigants for primary molar teeth. Materials and Methods: A total of 64 primary molars were used in this in vitro study. The teeth were randomly assigned to six groups (N=10). The root canals were prepared up to file #35, and all teeth were sterilized before contamination with Enterococcus faecalis (E. faecalis; ATCC 29212) suspension. After 48 hours of incubation, the root canals in each group were irrigated with the respective irrigants. Sterile paper points were then used to collect microbial samples from the root canals. A colony counter was used to count the number of colony-forming units (CFUs). Data were analyzed by SPSS version 20 (alpha=0.05). Results: The colony count was significantly different among the groups (P<0.001), and 2% M. piperita (P=0.009), 0.5% Z. multiflora (P=0.021), and 0.2% CHX (P=0.002) were significantly more effective than saline in elimination of E. faecalis. The ascending order of microbial count after irrigation was as follows: saline > 0.5% M. piperita > 0.2% CHX > 2% M. piperita > 0.5% Z. multiflora. Conclusion: The current study showed the optimal antibacterial activity of 0.5% Z. multiflora essential oil and 2% M. piperita essential oil against E. faecalis, and indicated their possible efficacy for use as an irrigant for root canal irrigation of primary molars.

Volatile compositions and glandular trichomes of Zataria multiflora in different phenological stages under normal and drought stress conditions

BackgroundZataria multiflora Boiss. is a medicinal and aromatic plant from the Lamiaceae family. It is extensively used in Iranian traditional medicine, mostly as a replacement for Thyme species. This study was focused on the analysis of chemical composition and the distribution and types of trichomes of Z. multiflora grown under different conditions. Equilibrium headspace analysis in combination with GC-FID-MS was used to identify volatile compounds released by aerial parts of Z. multiflora in development stages of 50 and 100% flowering under normal and drought-stress conditions.ResultsThe main constituents were p-cymene (20.06–27.40%), γ-terpinene (12.44–16.93%), and α-pinene (6.91–16.58%) and thymol (8.52–9.99%). The highest content of p-cymene (27.40%) and thymol (9.99%) was observed in the 50% flowering stage at the 90% field capacity, while the maximum γ-terpinene (16.93%) content was recorded in the 100% flowering stage under normal conditions. Using the SEM method, it was found that peltate glandular and non-glandular trichomes are distributed on the surface of the leaf, stem, and outer side of the calyx. However, capitate trichomes only are detected on the stem and calyx in the 100% flowering and beginning of blooming stages, respectively. The type and structure of trichomes do not vary in different development stages, but they differ in density. The highest number of leaf peltate glandular trichomes was observed in the vegetative and beginning of blooming stages at 50% and 90% field capacity, respectively. Non-glandular trichomes of the stem were observed with high density in both normal and stress conditions, which are more densely in 90% field capacity.ConclusionsSince this plant has strong potential to be used in the food and pharmacological industries, this study provides valuable information for its cultivation and harvesting at specific phenological stages, depending on desired compounds and their concentrations.

Alginate Nanoparticles Containing Cuminum cyminum and Zataria multiflora Essential Oils with Promising Anticancer and Antibacterial Effects.

Cancer and bacterial infections are major global health concerns driving the need for innovative medicines. This study investigated alginate nanoparticles loaded with essential oils (EOs) from Cuminum cyminum and Zataria multiflora as potential drug delivery systems. The nanoparticles were comprehensively characterized using techniques such as gas chromatography-mass spectrometry (GC-MS), dynamic light scattering (DLS), zetasizer, attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), and ultraviolet-visible spectroscopy (UV-Vis). Their biological properties against two human skin cancer cell lines (A-375 and A-431) and three bacteria (Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus) were also evaluated. Alginate nanoparticles containing C. cyminum and Z. multiflora EOs exhibited sizes of 160 ± 8 nm and 151 ± 10 nm, respectively. Their zeta potentials and encapsulation efficiencies were -18 ± 1 mV and 79 ± 4%, as well as -27 ± 2 mV and 86 ± 5%, respectively. The IC50 values against the tested cell lines and bacteria revealed superior efficacy for nanoparticles containing Z. multiflora EO. Considering the proper efficacy of the proposed nanoparticles, the straightforward preparation method and low cost suggest their potential for further in vivo studies.

Enrichment of creatine-gelatin cryogel with Zataria multiflora essential oil and titanium dioxide nanoparticles as a potential wound dressing

The prevalence of microbial infections in wounds, particularly burn wounds, presents a significant medical concern due to the inherent vulnerability of compromised skin to pathogen colonization and invasion. This study focused on the synthesis and evaluation of a creatine-gelatin cryogel, enriched with Zataria multiflora essential oil and titanium dioxide nanoparticles for potential wound dressing applications. The chemical and physical characteristics of the formulation were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, atomic force microscopy, and mechanical tests. Further studies such as wound fluid absorptivity, water vapor transmission rate, solubility, moisture content, porosity, and release properties were investigated. The release test demonstrated an encapsulation efficiency of 98.8 % and a loading capacity of 16.45 %, signifying a suitable cryogel matrix. The disk diffusion assay demonstrated that the synthesized cryogel had excellent antimicrobial efficacy against Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, and Candida species. Additionally, the cryogel exhibited great cytocompatibility and hemocompatibility (∼100 %). Our findings suggest that the creatine-gelatin cryogel blend enriched with Zataria multiflora essential oil and titanium dioxide nanoparticles possesses structural integrity, a cell-friendly nature, moisture-retaining capabilities, and biocompatible characteristics. These properties collectively render it an exceptionally suitable material for advanced wound dressings. Moreover, the demonstrated functional properties of the cryogel, including its ability to prevent infection, exhibit antioxidant activity, and retain moisture, underscore its potential for effective burn wound management.

Co-encapsulation of Shirazi thyme (Zataria multiflora) essential oil and nisin using caffeic acid grafted chitosan nanogel and the effect of this nanogel as a bio-preservative in Iranian white cheese.

The current study aims to co-encapsulate Shirazi thyme (Zataria multiflora) essential oil (ZEO) and nisin into chitosan nanogel as an antimicrobial and antioxidant agent to enhance the shelf-life of cheese. Chitosan-caffeic acid (CS-CA) nanogel was produced to co-encapsulate Zataria multiflora essential oil and nisin. This nanogel was characterized by dynamic light scattering (DLS), Fourier Transform Infrared (FTIR) spectroscopic analysis, X-ray diffraction (XRD) analysis, and scanning electron microscopy (SEM) images. The effect of free (TFZN) and encapsulated ZEO-nisin in chitosan nanogel (TCZN) on the chemical and microbiological properties of Iranian white cheese was assessed. The particle size, polydispersity index value (PDI), zeta potential, antioxidant activity, and encapsulation efficiency of the optimal chitosan-ZEO-nisin nanogel were 421.6 nm, 0.343, 34.0 mV, 71.06%-82.69%, and 41.3 ± 0.5%, 0.79 ± 0.06 mg/mL. respectively. FTIR and XRD approved ZEO and nisin entrapment within chitosan nanogel. The chitosan nanogel showed a highly porous surface with an irregular shape. The bioactive compounds of ZEO and nisin decreased the pH changes in cheese. On the 60th day of storage, the acidity of treated samples was significantly lower than that of control. Although the lowest anisidine index value was observed in samples treated with sodium nitrate (NaNO3) (TS), there was no significant difference between this sample and TCZN. The lowest microbial population was observed in TCZN and TS. After 60 days of ripening, Coliforms were not detected in the culture medium of TCZN and TS. The results can contribute to the development of a natural preservative with the potential for application in the dairy industry.

Essential Oils from the Perspective of Dentistry

Introduction: With a significant increase in interest in recent years regarding essential oils, the purpose of this work was to identify how Dentistry has researched and utilized these substances through an integrative review of articles available in indexed databases. The bibliographic survey was conducted in November and December 2022, through electronic research, consulting the Pubmed and LILACS databases. The descriptors and boolean operators used were: "volatile oils" OR "essential oils" AND "dentistry". The material published between 2018 and 2022 indexed in the mentioned databases and with a free version was included. Studies that did not address the proposed study theme were excluded. Material and Method: Out of 104 scientific articles found, 29 studies were reviewed and analyzed. Result and Discussion: A variety of plant derivatives have been studied for their inhibitory effect on C. albicans biofilms and for cytotoxicity, several are considered promising for the development of future research and bioproducts applicable to human health. Clinical studies indicated that the EOs from Pelargonium graveolens and Zataria multiflora are potentially effective in treating oral candidiasis, and the most promising EOs were obtained from Allium tubeorosum, Cinnamomum cassia, Cinnamomum zeylanicum, and Coriandrum sativum L. Further non-clinical and clinical studies with these EOs are necessary to determine their potential use and safety for the treatment of oral candidiasis. Listerine mouthwash was often compared with other chemical agents, mainly chlorhexidine, which in terms of plaque control is considered the gold standard in efficacy and substantivity. However, the use of chlorhexidine has disadvantages like altered taste sensations, teeth discoloration. With all this, the World Health Organization (WHO) recommended that researchers analyze the use of natural products, such as extracts of herbs and plants, to combat these negative effects. In another randomized study, they concluded that the mouthwash containing aqueous extracts of essential oils was as effective antibacterial agents as chlorhexidine mouthwashes, corroborating with other descriptive and experimental studies. Conclusion: The articles demonstrated extensive study regarding essential oils in Dentistry, presenting various applications that are still being explored: they have potential in the development of preventive or therapeutic agents for various oral diseases, use in dental materials, and popular applications. There is still a need for more clinical trials to establish safety and efficacy in oral health due to the wide variety of existing essential oils.

Lesson from nature: Zataria multiflora nanostructured lipid carrier topical gel formulation against Candida-associated onychomycosis, a randomized double-blind placebo-controlled clinical trial

PurposeThe increasing resistance to onychomycosis treatment globally is a major concern as it results in treatment failures. This research aimed to investigate the effectiveness of incorporating nanostructured lipid carriers (NLCs) in a gel formulation for treating mild to moderate Candida-associated onychomycosis using Zataria multiflora (Zt) essential oils. MethodsThe characteristics of Zataria multiflora-loaded nanostructured lipid carriers (Zt-NLCs) were validated using a carbopol gel (1 % w/w). In vitro tests were conducted using CLSI M60 standards to evaluate the susceptibility of ten commonly encountered dermatophyte species to antifungal agents. A clinical study was conducted involving 40 volunteers randomly assigned to two groups: one receiving the Zt-NLCs gel and the other receiving a placebo, using a double-blind, placebo-controlled design. The objective was to assess clinical manifestations and mycological findings after topical application for 2 and 4 weeks. The causative agents' species were identified using a PCR-RFLP method. ResultsThe preparation of Zt-NLCs gel resulted in a uniform suspension of spherical nanoparticles with favourable characteristics and no cytotoxic effects. Zt-NLCs demonstrated significant inhibitory effects on fungal growth and effectively improved clinical and mycological criteria in comparison to the placebo group (p < 0.005), even after 2 weeks of treatment. The C. albicans complex was recognized as the predominant species isolated from the patients using PCR-RFLP. ConclusionThe administration of Zt-NLCs gel for two weeks showed significant efficacy in disease management, as reported by both dermatologists and mycologists and therefore shows its potential use as a treatment against Candidal onychomycosis.

Effect of alginate coating activated by solid lipid nanoparticles containing Zataria multiflora essential oil on chicken fillet’s preservation

The current study aimed to assess the chemical, microbial, and sensory properties of Solid Lipid Nanoparticles (SLNs) in chicken fillets stored at 4 ± 1 °C for 12 days. As a result, the optimized ZEO-SLNS sample exhibited a spherical morphology with a droplet size of 251.51 ± 1.11 nm and a PDI of 0.34 ± 0.01 under transmission electron microscopy (TEM). The encapsulation efficiency (EE) and zeta potential were approximately 55.4 % and −20.87 ± 1.39 mV, respectively. Furthermore, encapsulating ZEO in SLNS enhanced antibacterial and antioxidant activity compared to pure ZEO. As a result, the application of alginate-loaded ZEO-SLNS extended the storage time of fresh chicken fillets. Thus, the application of this edible coating showcased a remarkable ability to substantially decelerate both microbial and chemical changes in chicken fillets during cold storage conditions. This finding underscores the potential of the edible coating as an effective means to enhance the safety and quality of chicken products.

Preparation and antibacterial performance of bacterial nanocellulose sachet containing Zataria multiflora essential oil loaded halloysite nanotubes on Escherichia coli O157:H7 in cheese

This study aimed to develop antimicrobial sachets by encapsulating Zataria multiflora essential oil (ZMEO) within halloysite nanotubes (HNTs) at different mass ratios (3:1, 2:1, and 1:1) and incorporating them into bacterial nanocellulose (BNC) films at two concentrations (10 % and 20 %) for cheese applications. The successful immobilization of ZMEO in HNTs was confirmed by ATR-FTIR spectra, while SEM micrographs revealed a porous and unique structure of the BNC films, which effectively prevented HNTs from leaking out of the sachets. Among the different formulations, the BNC sachets containing HNTs:ZMEO (2:1, 20 %) exhibited excellent biocompatibility and suitable mechanical properties. The HNTs:ZMEO (2:1, 20 %) BNC sachet was the most effective in reducing Escherichia coli O157:H7 in white cheese during 12 days of storage, with a reduction of 1.6 log CFU/g compared to the control samples. Furthermore, this particular sachet exhibited a sustained release of ZMEO in the standard fatty food simulant, and the addition of HNTs to the sachet significantly decreased the release of ZMEO. Importantly, the developed sachet did not have any detrimental toxic effects on human dermal fibroblasts. The antimicrobial sachet developed in this study is a promising packaging material for antimicrobial packaging of cheese.

Antioxidant and antimicrobial activities of tarragon and Zataria multiflora Boiss essential oils and their applications as active agents to improve the shelf life of freshly cut potato strips.

This study investigated the possibility of using active coatings based on Zedo gum containing essential oils of Zataria multiflora Boiss (ZE) and tarragon (TE) to increase the shelf life and maintain the quality of freshly cut potato strips. The chemical compositions of ZE and TE were initially identified, and their antioxidant and antimicrobial activities were investigated. ZE consisted mainly of carvacrol (26.26%), p-cymene (21.50%), thymol (18.05%), and linalool (11.31%), and those of TE comprised p-allylanisole (81.92%), β-Ocimene E (8.06%), and β-Ocimene Z (5.35%). Afterwards, a Zedo gum active coating (1% v/w) containing 1% (v/v) essential oil was prepared, and the produced coating solutions were used to soak the potato strips for 5 min. The coated potatoes were kept fresh in a refrigerator for 9 days, and their quality characteristics were examined every 3 days. The results show that the weight loss, browning index, total microbial count, and mold and yeast counts in the strips increased during 9 days of cold storage, and hardness decreased (p < .05). However, the coatings of strips, especially those containing essential oils, reduced the intensity of changes in moisture, color, and hardness, increased microbial stability, and maintained the sensory acceptance of strips compared with the uncoated sample (control). Finally, this study demonstrated that the quality and shelf life of fresh potato strips can be improved by using active coatings based on Zedo gum containing ZE and TE (especially ZE).

The wound healing effect of polycaprolactone-chitosan scaffold coated with a gel containing Zataria multiflora Boiss. volatile oil nanoemulsions

AimsThymus plant is a very useful herbal medicine with various properties such as anti-inflammatory and antibacterial. Therefore, the properties of this plant have made this drug a suitable candidate for wound healing. In this study, hydroxypropyl methylcellulose (HPMC) gel containing Zataria multiflora volatile oil nanoemulsion (neZM) along with polycaprolactone/chitosan (PCL-CS) nanofibrous scaffold was used, and the effect of three experimental groups on the wound healing process was evaluated. The first group, HPMC gel containing neZM, the second group, PCL-CS nanofibers, and the third group, HPMC gel containing neZM and bandaged with PCL-CS nanofibers (PCL-CS/neZM). Wounds bandaged with common sterile gas were considered as control.MethodsThe nanoemulsion was synthesized by a spontaneous method and loaded into a hydroxypropyl methylcellulose (HPMC) gel. The DLS test investigated the size of these nanoemulsions. A PCL-CS nanofibrous scaffold was also synthesized by electrospinning method then SEM and contact angle tests investigated morphology and hydrophilicity/hydrophobicity of its surface. The animal study was performed on full-thickness skin wounds in rats, and the process of tissue regeneration in the experimental and control groups was evaluated by H&E and Masson's trichrome staining.ResultsThe results showed that the nanoemulsion has a size of 225±9 nm and has an acceptable dispersion. The PCL-CS nanofibers synthesized by the electrospinning method also show non-beaded smooth fibers and due to the presence of chitosan with hydrophilic properties, have higher surface hydrophobicity than PCL fibers. The wound healing results show that the PCL-CS/neZM group significantly reduced the wound size compared to the other groups on the 7th, 14th, and 21st days. The histological results also show that the PCL-CS/neZM group could significantly reduce the parameters of edema, inflammation, and vascularity and increase the parameters of fibrosis, re-epithelialization, and collagen deposition compared to other groups on day 21.ConclusionThe results of this study show that the PCL-CS/neZM treatment can effectively improve wound healing.