scholarly journals In vitro susceptibility of Brachyspira hyodysenteriae to organic acids and essential oil components

2016 ◽  
Vol 78 (2) ◽  
pp. 325-328 ◽  
Author(s):  
Lien VANDE MAELE ◽  
Marc HEYNDRICKX ◽  
Dominiek MAES ◽  
Nele DE PAUW ◽  
Maxime MAHU ◽  
...  
Keyword(s):  
Essential Oil ◽  
Organic Acids ◽  
Brachyspira Hyodysenteriae ◽  
Oil Components

In vitro permeation, skin-layers distribution and environmental emission of bioactive Tea Tree essential oil components from topic formulations

2019 ◽  
Author(s):  
B Sgorbini ◽  
F Capetti ◽  
C Cagliero ◽  
A Marengo ◽  
M Argenziano ◽  
...  
Keyword(s):  
Essential Oil ◽  
Tea Tree ◽  
In Vitro Permeation ◽  
Oil Components

Combined application of phenolic acids and essential oil components against Salmonella Enteritidis and Listeria monocytogenes in vitro and in ready-to-eat cooked ham

LWT ◽  
2021 ◽  
pp. 111881
Author(s):  
Jessica Audrey Feijó Corrêa ◽  
João Vitor Garcia dos Santos ◽  
Alberto Gonçalves Evangelista ◽  
Anne Caroline Schoch Marques Pinto ◽  
Renata Ernlund Freitas de Macedo ◽  
...  
Keyword(s):  
Listeria Monocytogenes ◽  
Essential Oil ◽  
Phenolic Acids ◽  
Salmonella Enteritidis ◽  
Combined Application ◽  
Cooked Ham ◽  
Oil Components

Effect of Thymus ciliatus oil-based disinfectant solutions against bio-films formed by Bacillus cereus strains isolated from pasteurized-milk processing lines in Algeria

2018 ◽  
Vol 8 (1) ◽  
pp. 01-12
Author(s):  
Amina Kalai ◽  
Fadila Malek ◽  
Leila Bousmaha-Marroki
Keyword(s):  
Essential Oil ◽  
Organic Acids ◽  
Bacillus Cereus ◽  
Biofilm Formation ◽  
Chemical Cleaning ◽  
Pasteurized Milk ◽  
Thyme Oil ◽  
Milk Processing ◽  
Planktonic Growth

Bacillus cereus is a foodborne pathogen that often persists in dairy environments and is associated with food poisoning and spoilage. This spore-forming bacterium has a high propensity to develop biofilms onto dairy processing equipment and resists to chemical cleaning and disinfecting. This study deals with the in vitro application of thyme oil-based sanitizer solutions against biofilms formed by B. cereus genotypes which persist in pasteurized-milk processing lines. The effect of Thymus ciliatus essential oil on B. cereus planktonic cells and biofilms was assessed. The oil was tested alone and in combination with organic acids or industrial cleaning agents, in order to improve the removal of B. cereus recurrent genotypes. Minimal inhibitory concentrations of planktonic growth (MICs), biofilm formation (MBIC) and biofilm eradication (MBEC) of oil and organic acids were evaluated by microdilution assays. Thyme oil was more effective than organic acids against B. cereus planktonic growth, biofilm formation and established bio-films. High values of MICs were obtained for the three organic acids tested (3.5-4.5%) in comparison with those of essential oil (0.082-0.088%). The combination of oil with other antimicrobials as acetic acid, NaOH or HNO3 improves their effectiveness against B. cereus biofilms. These oil-based sanitizer solutions allow complete B. cereus biofilm eradication and should be an attractive candidate for the control and removal of biofilms in the dairy envi-ronment.

Nematicidal activity of essential oil components against the root-knot nematode Meloidogyne javanica

Nematology ◽  
2001 ◽  
Vol 3 (2) ◽  
pp. 159-164 ◽  
Author(s):  
Yuji Oka
Keyword(s):  
Essential Oil ◽  
Meloidogyne Javanica ◽  
Nematicidal Activity ◽  
Root Knot Nematode ◽  
Tomato Plants ◽  
Pot Experiments ◽  
Application Methods ◽  
Oil Components ◽  
Shoot Weight

AbstractNematicidal activity of eight essential oil components; trans -anethole, anis alcohol, p-anisaldehyde, benzaldehyde, 4-methoxyphenol, trans-cinnamaldehyde, (R)-(+)-pulegone, 2-furaldehyde, and a non-essential oil component anisole, was tested against the root-knot nematode Meloidogyne javanica in solutions in 200-ml and 3-l pots and in microplots. Among the anisole derivatives, p-anisaldehyde showed the highest nematicidal activity in solutions and in soil. However, trans-cinnamaldehyde, 2-furaldehyde and benzaldehyde showed higher nematicidal activity than p-anisaldehyde in the 3-l pot experiments. EC50 values of trans-cinnamaldehyde for juvenile immobilisation and hatching inhibition in vitro were as low as 15 and 11.3 μl/l, respectively. In the 3-l pot experiments, trans-cinnamaldehyde, 2-furaldehyde, benzaldehyde and carvacrol at a concentration of 100 mg/kg greatly reduced the root galling of tomato, whereas trans-anethole was not effective. In a microplot experiment, soil treatment with trans-cinnamaldehyde (50 ml/m2) reduced the galling index and increased the shoot weight of tomato plants. Although further experiments, such as development of formulations and application methods, are needed, some essential oil components, especially aldehydes, can be developed into lowtoxicity nematicides.

In vitro characterisation of the antimicrobial activity of selected essential oil components and binary combinations against the pig gut flora

2009 ◽  
Vol 151 (1-2) ◽  
pp. 111-127 ◽  
Author(s):  
J. Michiels ◽  
J.A.M. Missotten ◽  
D. Fremaut ◽  
S. De Smet ◽  
N.A. Dierick
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Gut Flora ◽  
Oil Components

In vitro Activity of Four Common Essential Oil Components against Biofilm-producing Pseudomonas aeruginosa

2011 ◽  
Vol 6 (4) ◽  
pp. 394-401 ◽  
Author(s):  
Saad Ibnsouda K ◽  
Soumya El abed ◽  
Abdellah Houari ◽  
Hassan Latrache ◽  
Adnane Remmal
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Essential Oil ◽  
Vitro Activity ◽  
In Vitro Activity ◽  
Oil Components

scholarly journals Lactose-Gated Mesoporous Silica Particles for Intestinal Controlled Delivery of Essential Oil Components: An In Vitro and In Vivo Study

Pharmaceutics ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 982
Author(s):  
Elisa Poyatos-Racionero ◽  
Isabel González-Álvarez ◽  
Paola Sánchez-Moreno ◽  
Leopoldo Sitia ◽  
Francesca Gatto ◽  
...  
Keyword(s):  
Small Intestine ◽  
Essential Oil ◽  
Mesoporous Silica ◽  
Controlled Delivery ◽  
Bioactive Molecules ◽  
In Vivo Model ◽  
Prolonged Stay ◽  
Oil Components

Mesoporous silica microparticles functionalized with lactose for the specific release of essential oil components (EOCs) in the small intestine are presented. In vitro and in vivo intestinal models were applied to validate the microparticles (M41-EOC-L), in which the presence of lactase acts as the triggering stimulus for the controlled release of EOCs. Among the different microdevices prepared (containing thymol, eugenol and cinnamaldehyde), the one loaded with cinnamaldehyde showed the most significant Caco-2 cell viability reduction. On the other hand, interaction of the particles with enterocyte-like monolayers showed a reduction of EOCs permeability when protected into the designed microdevices. Then, a microdevice loaded with cinnamaldehyde was applied in the in vivo model of Wistar rat. The results showed a reduction in cinnamaldehyde plasma levels and an increase in its concentration in the lumen of the gastrointestinal tract (GIT). The absence of payload release in the stomach, the progressive release throughout the intestine and the prolonged stay of the payload in the GIT-lumen increased the bioavailability of the encapsulated compound at the site of the desired action. These innovative results, based on the specific intestinal controlled delivery, suggest that the M41-payload-L could be a potential hybrid microdevice for the protection and administration of bioactive molecules in the small intestine and colon.

scholarly journals Anti-Helicobacter pylori activity in vitro of chamomile flowers, coneflower herbs, peppermint leaves and thyme herbs – a preliminary report

2015 ◽  
Vol 28 (1) ◽  
pp. 30-32 ◽  
Author(s):  
Anna Malm ◽  
Anna Glowniak-Lipa ◽  
Izabela Korona-Glowniak ◽  
Tomasz Baj
Keyword(s):  
Helicobacter Pylori ◽  
Essential Oil ◽  
Preliminary Report ◽  
Reference Strain ◽  
Aqueous Ethanol ◽  
Therapeutic Approaches ◽  
Oil Components ◽  
H Pylori ◽  
Chamomile Flowers

Abstract Recently, several studies have been undertaken so as to develop more effective therapeutic approaches towards eradicating Helicobacter pylori. Among these is phytotherapy. The aim of this study was to investigate the activity in vitro of the plant extracts obtained from common herbs cultivated in the Lubelszczyzna region against the reference strain H. pylori ATCC 43504. Among these are thyme herbs, chamomile flowers, peppermint leaves and coneflower herbs. Herein, it was found that the MIC values of the assayed extracts were as follows: the extracts from coneflower herbs showed anti-H. pylori activity with MIC = 31.3-125 μg/ml; the extracts from chamomile flowers demonstrated MIC = 31.3-62.5 μg/ ml; the extracts from peppermint leaves had MIC = 15.6-250 μg/ml; and the extracts from thyme herbs revealed MIC = 15.6-62.5 μg/ml, depending on the solvent used. The most active were the extracts obtained with ethyl acetate or ethanol alcohol absolute 99.8%. These showing MIC within the range of 15.6-62.5 μg/ml, while the lowest activity was observed in case of the extract obtained with 70% aqueous ethanol. This last showing MIC within the range of 62.5-250 μg/ml. The MIC values of essential oil components were 15.6 μg/ml for bisabolol and menthol or 31.3 μg/ml for thymol. The obtained data indicate that the assayed herbs possessed promising anti-H. pylori bioactivity.

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