Comparison of antifungal activity of essential oils of clove, lemongrass and thyme for natural preservation of dried apricots

2021 ◽  
pp. 108201322110496
Author(s):  
Els Debonne ◽  
Merve Silanur Yilmaz ◽  
Ozge Sakiyan ◽  
Mia Eeckhout
Keyword(s):  
Antifungal Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Shelf Life ◽  
Inhibitory Concentration ◽  
Growth Data ◽  
Diffusion Growth ◽  
Sulphur Oxide ◽  
Agar Diffusion ◽  
Promising Strategy

Currently, the majority of fresh apricots destined for the production of dried apricots undergo sulphur oxide fumigation before drying to protect the fruit against fungal spoilage. To eliminate the use of sulphite, packaging assisted with essential oil is a promising strategy to increase shelf-life of dried apricots since it does not impact its flavor characteristics. In this study, three essential oils were selected: clove, lemongrass and thyme. They were screened for antifungal activity against Eurotium spp. with different methods: micro- and macro-dilution and agar-diffusion. Growth/no-growth data were used to develop models for all three methods. Clove exerted the strongest antifungal activity with an inhibitory concentration of 0.075%, 0.035% and 0.05% through respectively micro-dilution, macro-dilution and agar diffusion. For thyme the following values were obtained: 0.775%, 0.070% and 0.100%. This means that the antifungal activity of thyme is 10 times lower in micro-dilution and 2 times lower in macro-dilution and agar diffusion compared to clove. Through micro-dilution, lemongrass was found to have the second highest antifungal activity (0.25%). When used in the volatile atmosphere of dried apricots and in macro-dilution, the antifungal activity of lemongrass was the lowest, with respective values of > 0.200% and 0.105% for G/NG prediction.

scholarly journals Chemical Composition and Antifungal Activity of the Essential Oils of Schinus weinmannifolius Collected in the Spring and Winter

2014 ◽  
Vol 9 (9) ◽  
pp. 1934578X1400900
Author(s):  
Camila Hernandes ◽  
Silvia H. Taleb-Contini ◽  
Ana Carolina D. Bartolomeu ◽  
Bianca W. Bertoni ◽  
Suzelei C. França ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Minimum Inhibitory Concentration ◽  
Antifungal Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Inhibitory Concentration ◽  
Biological Activities ◽  
Antimicrobial Action ◽  
Pharmacological Profile

Reports on the chemical and pharmacological profile of the essential oil of Schinus weinmannifolius do not exist, although other Schinus species have been widely investigated for their biological activities. This work aimed to evaluate the chemical composition and antimicrobial activity of the essential oil of S. weinmannifolius collected in the spring and winter. The essential oils were extracted by hydrodistillation, analyzed by GC/MS and submitted to microdilution tests, to determine the minimum inhibitory concentration. The oils displayed different chemical composition and antimicrobial action. Bicyclogermacrene and limonene predominated in the oils extracted in the winter and spring, respectively, whereas only the latter oil exhibited antifungal activity.

scholarly journals Antifungal activity of Ocotea odorifera (Vell.) Rowher, Ocotea puberula (Rich.) Nees and Cinnamodendron dinisii Schwanke essential oils

2019 ◽  
Author(s):  
P. Mezzomo ◽  
T.L. Sausen ◽  
N. Paroul ◽  
S.S. Roman ◽  
A.A.P. Mielniczki ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Antifungal Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Inhibitory Concentration ◽  
Chemical Compounds ◽  
Inhibitory Effect ◽  
Pathogenic Microorganisms ◽  
Biological Interest ◽  
Penicillium Crustosum

AbstractBiocompounds are promising tools with the potential to control pathogenic microorganisms. The medicinal plant species Ocotea odorifera, Ocotea puberula and Cinnamodendron dinisii, distributed along Brazilian biomes, are sources of chemical compounds of biological interest. This study aimed to evaluate the antifungal activity of the essential oils of O. odorifera, O. puberula and C. dinisii essential oils upon the mycotoxin producers Alternaria alternata, Aspergillus flavus and Penicillium crustosum. The essential oils where characterized by gas chromatography coupled to mass spectrometer (CG-MS). The majority compounds identified were: safrol (39.23%) and camphor (31.54%) in O. odorifera, Beta-caryophyllene (25.01%) and spathulenol (17.74%) in O. puberula, and bicyclogermacrene (23.19%) and spathulenol (20.21%) in C. dinisii. The Minimal Inhibitory Concentration (MIC) of antifungal activity considered diameters higher than 10 mm after 72 h of incubation at 30 ºC. A. alternata presented higher resistance to O. odorifera and C. dinisii oils. The inhibitory effect of O. odorifera on A. flavus showed stabilization at oils concentrations between 50% and 80%, increasing at 90% and 100% (pure oil) treatments. We observed that the essential oils of O. odorifera and C. dinisii have potential in the control of the analyzed fungi species. The essential oil of O. odorifera presented a better activity in all the assays, which can be related to the presence of safrole and phenylpropenes, compounds with known antifungal activity.

scholarly journals THE ESSENTIAL OIL CONTENTS OF JERINGAU (Acorus calamus L.) RHIZOMES AND THEIR ANTIFUNGAL ACTIVITY AGAINST Candida albicans

2017 ◽  
Vol 1 (1) ◽  
pp. 33 ◽  
Author(s):  
Wiwik Susanah Rita ◽  
Retno Kawuri ◽  
I Made Dira Swantara
Keyword(s):  
Candida Albicans ◽  
Antifungal Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Steam Distillation ◽  
Inhibitory Concentration ◽  
Diffusion Method ◽  
Acorus Calamus ◽  
Oil Concentration ◽  
Trans Methyl

Acorus calamus L. rhizome was trusted having antibacterial activity. This study aimed to identify the compounds in the Acorus Calamus L. rhizomes essential oils and to recognize the antifungal activity of the oils against Candida albicans. The extraction of essential oils from rhizome was carried out by steam distillation technique. Identification of compounds in the oils was conducted by Gas Chromatography- Mass Spectroscopy (GCMS), while the antifungal test against Candida albicans was done by well diffusion method. Extraction of 10 kg of rhizomes produced 16.53 mL essential oil with a yield of 0.1653% (? = 1.066), the oil was brownish yellow and very flavorful. GC-MS analysis showed that the essential oil contained 11 compounds, they are (E)-3,7 dimethyl-1,3,6-Octatriene (trans-?-Ocimene) (3,73%), linalool (1,07%), ?-elemene (1,15%), trans methyl isoeugenol (7,68%), shyobunon (15,74%), bicyclogermakren (0,93%), dehidroxy-isocalamendiol (2,61%), ?-calacorene (3,34%), euasarone (26,84), cis-asarone (18,62%); dan trans- asarone (18,29%). Antifungal activity test showed that the growth and biomass inhibition of C. albicans increased with the increase of the oil concentration. Minimum Inhibitory Concentration (MIC) of essential oil toward C. albicans was 1% with the inhibition of 7.83 mm.

scholarly journals Nanoencapsulated Essential Oils with Enhanced Antifungal Activity for Potential Application on Agri-Food, Material and Environmental Fields

Antibiotics ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 31
Author(s):  
Magdaléna Kapustová ◽  
Giuseppe Granata ◽  
Edoardo Napoli ◽  
Andrea Puškárová ◽  
Mária Bučková ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Winning Strategy ◽  
Colloidal Suspensions ◽  
Fungal Species ◽  
Natural Environments ◽  
Food Material ◽  
Minimum Fungicidal Concentration ◽  
Fungal Strains

Nanotechnology is a new frontier of this century that finds applications in various fields of science with important effects on our life and on the environment. Nanoencapsulation of bioactive compounds is a promising topic of nanotechnology. The excessive use of synthetic compounds with antifungal activity has led to the selection of resistant fungal species. In this context, the use of plant essential oils (EOs) with antifungal activity encapsulated in ecofriendly nanosystems could be a new and winning strategy to overcome the problem. We prepared nanoencapsules containing the essential oils of Origanum vulgare (OV) and Thymus capitatus (TC) by the nanoprecipitation method. The colloidal suspensions were characterized for size, polydispersity index (PDI), zeta potential, efficiency of encapsulation (EE) and loading capacity (LC). Finally, the essential oil nanosuspensions were assayed against a panel of fourteen fungal strains belonging to the Ascomycota and Basidiomycota phyla. Our results show that the nanosystems containing thyme and oregano essential oils were active against various fungal strains from natural environments and materials. In particular, the minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) values were two to four times lower than the pure essential oils. The aqueous, ecofriendly essential oil nanosuspensions with broad-spectrum antifungal activity could be a valid alternative to synthetic products, finding interesting applications in the agri-food and environmental fields.

scholarly journals Chemical composition and antifungal activity of essential oils from four Asteraceae plants grown in Egypt

2018 ◽  
Vol 73 (7-8) ◽  
pp. 313-318 ◽  
Author(s):  
Rose Vanessa Bandeira Reidel ◽  
Simona Nardoni ◽  
Francesca Mancianti ◽  
Claudia Anedda ◽  
Abd El-Nasser G. El Gendy ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Antifungal Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Inhibitory Activity ◽  
First Time

Abstract The objective of the present paper was the assessment of the chemical composition of the essential oils from four Asteraceae species with a considerable food, medicinal, and agricultural value, collected in Egypt, together with their in vitro inhibitory activity against molds and yeasts. The essential oil of Launaea cornuta flowers was also evaluated for the first time, but because of its very low yield (<0.01%), no antifungal test was performed.

Composition and Efficacy of Essential Oil Nanoemulsions

2022 ◽  
pp. 59-92
Author(s):  
Sowbarnika Arul Senthil ◽  
Sneha Unnikrishnan ◽  
Karthikeyan Ramalingam
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Shelf Life ◽  
Critical Analysis ◽  
Optimal Concentration ◽  
The Other ◽  
Micron Size ◽  
Antimicrobial Mechanism ◽  
Antimicrobial Potency

Essential oil, endorsed as a natural cum powerful ingredient, encompasses incredible properties, and various approaches have been proposed and spurred over the last decades. One among them is the nano-emulsification of the essential oils, and the sub-micron size provides prolonged shelf life, ease of formulation and handling, nullification of the stated obstacles, as well as the augmentation of the essential oil antimicrobial activity. This chapter primarily reinforces and is well-articulated on (1) the components and its precise concentration adequate to fabricate nanoemulsion; (2) critical analysis on the experimentally inferred antimicrobial mechanism and the extent of contribution granted by the optimal concentration of the components in the nanoemulsion; (3) scrutinization of the possible impact rendered by the components on the other characteristics of nanoemulsion aside from antimicrobial potency. Altogether, the importance of careful formulation of the essential oil-loaded nanoemulsion is emphasized extensively.

scholarly journals Essential Oils-Loaded Polymer Particles: Preparation, Characterization and Antimicrobial Property

Polymers ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1017 ◽  
Author(s):  
Francesca Froiio ◽  
Lorianne Ginot ◽  
Donatella Paolino ◽  
Noureddine Lebaz ◽  
Abderrazzak Bentaher ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Shelf Life ◽  
Orange Juice ◽  
Water Solubility ◽  
Antimicrobial Property ◽  
Storage Period ◽  
Orange Essential Oil

In the last few years, essential oils (EOs) derived from plants have aroused great interest due to their well-known antimicrobial activity. Unfortunately, they present several limitations in their use, such as photosensitivity, temperature sensitivity, high volatility, and poor water solubility. The encapsulation technique represents a good solution to these problems and ensures protection of the functional properties of essential oils. In this work, bergamot essential oil (BEO) and sweet orange essential oil (OEO) loaded-Eudragit® RS 100 (EuRS100) nanoparticles (NPs) were prepared by using the nanoprecipitation technique. We obtained nanoparticles characterized by a mean diameter of 57 to 208 nm and a positive surface charge (39 to 74 mV). The antibacterial activity of the obtained systems against Escherichia coli was in vitro investigated. We demonstrated that both orange and bergamot essential oils were successfully encapsulated and our nanoparticles have good antibacterial activity. Finally, in order to evaluate the potential applicability of OEONps to prolong fresh orange juice shelf-life, survival of E. coli during a storage period of one week at 25 °C was investigated: Orange essential oil-loaded nanoparticles (OEONPs) have been able to prolong the orange juice shelf life.

Physicochemical and Antimicrobial Properties of Hydroxypropyl Methylcellulose-Cinnamon Essential Oil Emulsion: Effects of Micro- and Nanodroplets

2019 ◽  
Vol 15 (9) ◽  
Author(s):  
Shuzhi Li ◽  
Jingyang Zhou ◽  
Yanan Wang ◽  
Anguo Teng ◽  
Kai Zhang ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Food Processing ◽  
Antibacterial Agent ◽  
Inhibitory Concentration ◽  
Hydroxypropyl Methylcellulose ◽  
Antimicrobial Properties ◽  
Oil Emulsion ◽  
Oil Emulsions ◽  
Cinnamon Essential Oil

AbstractEmulsion is an efficient encapsulation tool for enhancing the functional properties of essential oils (EOs). Herein, two two-dimensional cinnamon essential oil emulsions (from micro- to nanoscales) were emulsified by hydroxypropyl methylcellulose, and their antimicrobial and physicochemical properties were investigated. For the models of Escherichia coli CGMCC 1.0907, Salmonella enterica subsp. Enterica serovar Typhi (CICC 10867), Staphylococcus aureus CGMCC 1.0089, and Listeria monocytogene CGMCC 1.9144, the minimum inhibitory concentration (MIC) of the nanoemulsion was 31.25 μL/mL compared to that of the microemulsion (62.5–125 μL/mL) and pure oil (125–250 μL/mL), indicating the superiority of nanoemulsion as an antibacterial agent. The results showed that the highest activity was seen in the gram-positive L. monocytogenes whereas the lowest was in the gram-negative S. enterica. The identified properties of HPMC (hydroxypropyl methylcellulose) provide the potential for emulsifying and enhancing essential oils in light industries, especially for food processing.

Antifungal Activity of the Essential Oil of Origanum syriacum L.

1995 ◽  
Vol 58 (10) ◽  
pp. 1147-1149 ◽  
Author(s):  
RASHA K. DAOUK ◽  
SHAWKY M. DAGHER ◽  
ELSA J. SATTOUT
Keyword(s):  
Liquid Chromatography ◽  
Antifungal Activity ◽  
Essential Oil ◽  
Inhibitory Action ◽  
Inhibitory Concentration ◽  
Volatile Oil ◽  
Gas Liquid Chromatography ◽  
Penicillium Species ◽  
Origanum Oil ◽  
Yeast Extract Sucrose

The volatile oil of the Lebanese Za'atar (Origanum syriacum L.) was characterized for its thymol and carvacrol content using gas-liquid chromatography. These two compounds constituted the major components of the oil and were present in equal proportions of 30% in the volatile oil extracted from the leaves and shoot tips of the Origanum plant during the preflowering stage. The percentage of carvacrol in the essential oil increased to 62% after flowering and maturation, while the concentration of thymol decreased to 14%. Origanum oil extracted from plants collected during midseason was evaluated for its antifungal activity against Aspergillus niger, Fusarium oxysporum, and Penicillium species. The oil exhibited strong inhibitory action against the three fungi tested. The minimum inhibitory concentration (MIC) of the oil was found to be 0.1 μl/ml of yeast extract sucrose broth for the fungi tested.

Antimicrobial Activity of Individual and Combined Essential Oils against Foodborne Pathogenic Bacteria

2016 ◽  
Vol 79 (2) ◽  
pp. 309-315 ◽  
Author(s):  
FATIMA REYES-JURADO ◽  
AURELIO LÓPEZ-MALO ◽  
ENRIQUE PALOU
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Pathogenic Bacteria ◽  
Inhibitory Concentration ◽  
Synergistic Effects ◽  
Gas Chromatography Mass Spectrometry ◽  
Thymus Vulgaris ◽  
Chemical Compositions ◽  
Fractional Inhibitory Concentration ◽  
Mustard Essential Oil

ABSTRACTThe antimicrobial activities of essential oils from Mexican oregano (Lippia berlandieri Schauer), mustard (Brassica nigra), and thyme (Thymus vulgaris) were evaluated alone and in binary combinations against Listeria monocytogenes, Staphylococcus aureus, or Salmonella Enteritidis. Chemical compositions of the essential oils were analyzed by gas chromatography–mass spectrometry. The MICs of the evaluated essential oils ranged from 0.05 to 0.50% (vol/vol). Mustard essential oil was the most effective, likely due to the presence of allyl isothiocyanate, identified as its major component. Furthermore, mustard essential oil exhibited synergistic effects when combined with either Mexican oregano or thyme essential oils (fractional inhibitory concentration indices of 0.75); an additive effect was obtained by combining thyme and Mexican oregano essential oils (fractional inhibitory concentration index = 1.00). These results suggest the potential of studied essential oil mixtures to inhibit microbial growth and preserve foods; however, their effect on sensory quality in selected foods compatible with their flavor needs to be assessed.

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