Antifungal, Antiaflatoxin and Antioxidant Activity of Plant Essential Oils and Their In Vivo Efficacy in Protection of Chickpea Seeds

2015 ◽  
Vol 39 (1) ◽  
pp. 36-44 ◽  
Author(s):  
Bhanu Prakash ◽  
Akash Kedia ◽  
Aakanksha Singh ◽  
Shashi Yadav ◽  
Arti Singh ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Essential Oils ◽  
In Vivo Efficacy ◽  
Plant Essential Oils

In vivo and in vitro control activity of plant essential oils against three strains of Aspergillus niger

2017 ◽  
Vol 24 (27) ◽  
pp. 21948-21959 ◽  
Author(s):  
Peeyush Kumar ◽  
Sapna Mishra ◽  
Atul Kumar ◽  
Sanjeev Kumar ◽  
Chandra Shekhar Prasad
Keyword(s):  
Aspergillus Niger ◽  
Essential Oils ◽  
Control Activity ◽  
Plant Essential Oils

scholarly journals Plant essential oils against bacteria isolated from fish: an in vitro screening and in vivo efficacy of Lippia origanoides

2019 ◽  
Vol 49 (6) ◽  
Author(s):  
Guerino Bandeira Junior ◽  
Carine de Freitas Souza ◽  
Matheus Dellaméa Baldissera ◽  
Sharine Nunes Descovi ◽  
Bibiana Petri da Silveira ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Essential Oils ◽  
Bacterial Infections ◽  
Cupressus Sempervirens ◽  
Therapeutic Success ◽  
Plant Essential Oils ◽  
In Vitro Antibacterial Activity ◽  
Fish Bacteria

ABSTRACT: The use of natural products, such as essential oils (EOs), is a potential novel approach to treat fish bacterial infections with a lower risk of developing resistance. There has been a number of studies reporting the activity of EOs as those obtained from the species Achyrocline satureioides, Aniba parviflora, Aniba rosaeodora, Anthemis nobilis, Conobea scoparioides, Cupressus sempervirens, Illicium verum, Lippia origanoides, and Melaleuca alternifolia against bacteria. However, there are few studies investigating the effect of these EOs against fish bacteria. Therefore, the aim of this study was to evaluate the in vitro antibacterial activity of EOs against the following fish bacteria, Aeromonas hydrophila, Citrobacter freundii, and Raoultella ornithinolytica. Additionally, the in vivo antibacterial activity of the EO L. origanoides was evaluated against experimentally induced A. hydrophila infection of silver catfish (Rhamdia quelen). The EO of L. origanoides was chosen as it showed the highest in vitro antibacterial activity, with minimum inhibitory concentrations ranging from 0.2 to 0.8 mg mL-1. This EO also presented a therapeutic success of 58.33%, on a 30 day A. hydrophila infection. Therefore, we suggested that the EO of L. origanoides may be a viable alternative as a treatment for A. hydrophila infection.

Peppermint and Basil Essential Oils: Chemical Composition, in vitro Antioxidant Activity and in vivo Estimation of Skin Irritation

2019 ◽  
Vol 22 (4) ◽  
pp. 979-993
Author(s):  
Ljiljana P. Stanojevic ◽  
Jelena S. Stanojevic ◽  
Vesna Lj. Savic ◽  
Dragan J. Cvetkovic ◽  
Ana Kolarevic ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
Skin Irritation ◽  
In Vitro Antioxidant Activity

scholarly journals In vivo efficacy of carvacrol on Campylobacter jejuni prevalence in broiler chickens during an entire fattening period

2020 ◽  
Vol 10 (3) ◽  
pp. 131-138
Author(s):  
V. Szott ◽  
B. Reichelt ◽  
T. Alter ◽  
A. Friese ◽  
U. Roesler
Keyword(s):  
Essential Oils ◽  
Campylobacter Jejuni ◽  
Broiler Chickens ◽  
Most Probable Number ◽  
Resistant Bacteria ◽  
Probable Number ◽  
Plant Essential Oils ◽  
Fattening Period

AbstractCarvacrol, a primary constituent of plant essential oils (EOs), and its antimicrobial activity have been the subject of many in vitro studies. Due to an increasing demand for alternative antimicrobials and an emerging number of antibiotic resistant bacteria, the use of essential oils has played a major role in many recent approaches to reduce Campylobacter colonization in poultry before slaughter age. For that purpose, the reducing effect of carvacrol on Campylobacter jejuni prevalence in broilers was determined in vivo in an experimental broiler chicken model during an entire fattening period. Carvacrol was added to the feed in a concentration of 120 mg/kg feed four days post hatch until the end of the trial. In this study, we demonstrated a statistically significant decrease of C. jejuni counts by 1.17 decadic logarithm (log10) most probable number (MPN)/g in cloacal swabs during starter and grower periods (corresponding to a broilers age between 1 and 28 days). Similar results were observed for colon enumeration at the end of the trial where C. jejuni counts were significantly reduced by 1.25 log10 MPN/g. However, carvacrol did not successfully reduce Campylobacter cecal colonization in 33-day-old broilers.

scholarly journals Antifungal activity of plant essential oils against Verticillium dahliae Klebahn, the causal agent of verticillium wilt of pepper

2019 ◽  
Vol 34 (1) ◽  
pp. 39-46
Author(s):  
Jelena Lukovic ◽  
Biljana Todorovic ◽  
Svetlana Milijasevic-Marcic ◽  
Emil Rekanovic ◽  
Miroslav Kostic ◽  
...  
Keyword(s):  
Essential Oils ◽  
Verticillium Wilt ◽  
Verticillium Dahliae ◽  
Harmful Effect ◽  
Causal Agent ◽  
Mentha Piperita ◽  
Black Pine ◽  
Plant Essential Oils ◽  
Two Samples

Biofungicides based on plant oils have some advantages compared to chemical fungicides, especially considering their harmful effect on the environment. Twenty-two essential oils from Germany and Albania were assayed for inhibitory and fungicidal activity against Verticillium dahliae Klebahn, the causal agent of Verticillium wilt of pepper, using the macrodilution fumigant method. The concentrations of oils obtained in the vapour phase were: 0.02, 0.04, 0.08, 0.16 and 0.32 ?l ml-1 with determined minimum inhibitory and fungicidal concentrations. The strongest activity was shown by two samples of mint oil (Mentha piperita L.) at 0.02 ?l ml-1 of air, both from Germany and Albania, followed by plant essential oils of eucalyptus (Eucalyptus globulus Labilardie), black pine (Pinus nigra L.) and cade (Juniperus oxycedrus L.), and all of them were lethal to the pathogen. Nine oils: two samples of mint, cade, eucalyptus, black pine, lavender (Lavandula angustifolia Mill.), sage (Salvia officinalis L.) and rosemary (Rosmarinus officinalis L.) inhibited the growth of Verticillium dahliae, while five oils (two samples of mint, eucalyptus, black pine and cade) showed fungicidal effects on the pathogen. These results showed that mint, eucalyptus, black pine and cade essential oils have a potential for further in vivo experiments against Verticillium dahliae.

scholarly journals Effects of selected plant essential oils on the growth and development of mouse preimplantation embryos in vivo

2007 ◽  
pp. 97-104
Author(s):  
M Domaracký ◽  
P Rehák ◽  
Š Juhás ◽  
J Koppel
Keyword(s):  
Cell Death ◽  
Essential Oils ◽  
Embryo Development ◽  
Growth And Development ◽  
Fluorescent Microscopy ◽  
Preimplantation Embryos ◽  
Thymus Vulgaris ◽  
Syzygium Aromaticum ◽  
Plant Essential Oils

Plant essential oils (EOs) have been reported to have health benefit properties and their preventive and therapeutic use in animals is expected to increase in the future. We evaluated the influence of five essential oils obtained from plant species which are known to have positive antimicrobial, antioxidative and anti-inflammatory effects--sage EO from Salvia officinalis L. (Lamiaceae), oregano EO from Origanum vulgare L. (Lamiaceae), thyme EO from Thymus vulgaris L. (Lamiaceae), clove EO from Syzygium aromaticum L. (Myrtaceae) and cinnamon EO from Cinnamomum zeylanicum Blume (Lauraceae) on the growth and development of mouse preimplantation embryos in vivo. Essential oils were added to commercial diet at concentrations of 0.25% for sage EO, thyme EO, clove EO, cinnamon EO and 0.1% for oregano EO, and fed to ICR female mice for 2 weeks ad libitum. Females were then mated with males of the same strain. Embryos obtained on Day 4 of pregnancy at the blastocyst stage were stained by morphological triple staining (Hoechst, PI, Calcein-AM) and evaluated using fluorescent microscopy. The effects of essential oils were estimated by the viability of embryos, number of nuclei and distribution of embryos according to nucleus number. Cinnamon EO significantly decreased the number of nuclei and the distribution of embryos according to nucleus number was significantly altered. Sage EO negatively influenced the distribution of embryos according to nucleus number. Clove and oregano EOs induced a significantly increased rate of cell death. Only thyme EO had no detectable effects on embryo development. In conclusion, none of the essential oils had any positive effect on embryo development, but some of them reduced the number of cells and increased the incidence of cell death.

Activities of essential oils from three Brazilian plants and benzaldehyde analogues against Meloidogyne incognita

Nematology ◽  
2019 ◽  
Vol 21 (10) ◽  
pp. 1081-1089 ◽  
Author(s):  
Aline Ferreira Barros ◽  
Vicente Paulo Campos ◽  
Denilson Ferreira de Oliveira ◽  
Fabiola de Jesus Silva ◽  
Iselino Nogueira Jardim ◽  
...  
Keyword(s):  
Essential Oils ◽  
Meloidogyne Incognita ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Plant Essential Oils ◽  
Hyptis Suaveolens ◽  
Stage Juvenile ◽  
Main Component

Summary There is a demand for novel products for the control of plant-parasitic nematodes, so we characterised the effectiveness of some plant essential oils against Meloidogyne incognita and verified the efficiency of the major component from the most toxic oils and their analogues using in vitro and in vivo assays. In this study, the essential oils from Piptadenia viridiflora, Hyptis suaveolens and Astronium graveolens against M. incognita were evaluated, but only P. viridiflora oil showed toxicity toward M. incognita. Benzaldehyde was its main component according to GC-MS analysis. In in vitro assays, benzaldehyde (100 and 200 μg ml−1) and its oxime (400 μg ml−1) caused a higher rate of M. incognita second-stage juvenile (J2) mortality than the nematicide carbofuran (170 μg ml−1). Reductions of more than 90% in the number of galls and eggs, even greater than that observed with carbofuran, were observed in the assay where the J2 were placed in solutions of benzaldehyde and its oxime 48 h prior to tomato plant inoculation. Application of benzaldehyde together with M. incognita J2 to the substrate resulted only in a reduction in the number of eggs (42-65%); however, its oxime reduced both the number of galls (43-84%) and eggs (23-89%). Therefore, the P. viridiflora oil, its major component benzaldehyde, and the analogue benzaldehyde oxime are toxic to M. incognita. In two different in vivo assays, benzaldehyde oxime was confirmed as toxic to M. incognita with a greater efficacy than benzaldehyde.

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