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LIPPIA BERLANDIERI PDF

Oregano is a plant utilized as a spice in numerous regions of the world due to its characteristic sensory attributes of flavor, color, and aroma. The use of oregano. This study evaluated growth patterns of Mexican oregano (Lippia berlandieri) under salt stress and tested the hypothesis that this species is salt tolerant. J Food Prot. Dec;74(12) doi: / Antifungal activity evaluation of Mexican oregano (Lippia berlandieri Schauer).

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Materials and Methods 2. This model describes a sigmoid decay and generates two biological parameters and between pH and MOEO concentration Table 1.

Carvacrol 5-isopropylmethylphenol and thymol 2-isopropylmethylphenol are the major components of the essential oils of some species belonging to the Lamiaceae family including oregano, and these are phenolic compounds; isomers of monoterpenes exhibit berlajdieri antimicrobial activity in berlandiieri [ 67 ].

Statistical analyses were performed with Minitab 17 software Minitab Inc. Based on their traditional use, these extracts obtained from plants are first recommended, due to their broad-spectrum antimicrobial action and low side effects treatments [ 3 ]. To receive news and publication updates for Journal of Food Quality, enter your email address in the box below.

berlandieei However, many reports mentioned that, for proper operation of active edible films, the optimal pH should be considered at which the antimicrobial agent may have a state of dissociation that allows better antimicrobial activity. Inhibition curves were fitted to the Fermi model.

Researchers around the world are investigating the use of essential oils to protect food from microbial growth. Films were made according to the Bertuzzi et al.

As observed, when MOEO berkandieri increased, a rapid berlandiieri inactivation was observed, while at lower concentrations, the inactivation presented a remarkable nonlinear kinetics. Antimicrobial assay was performed. Moreover, these authors pointed out that EO effectiveness is influenced by the sensitivity of the microorganism. The antimicrobial activity of essential oils and plant extracts is well known for a long time, and many research results have been published against food-borne pathogens [ 1 ] and about their low toxicity to mammals, fewer environmental effects, and low cost, which make them more attractive than synthetic antimicrobials [ 2 ].

Therefore, CMC releases more active compounds.

Microbial modeling has allowed estimating key intrinsic factors as pH and MOEO concentration with the synergistic effect against two important food-borne pathogens. Survival curves for both microorganisms are presented in Figures 1 and 2. Berlandiero chemical analysis showed that the two major compounds were thymol 2. Indexed in Science Citation Index Expanded.

Lippia graveolens – Wikipedia

Table of Contents Alerts. The main advantage of using EOs in a polymer matrix coating is berlandier slow diffusion of the antimicrobial agent, leaving high concentrations of the active compound in contact with the food surface where contamination has occurred or is likely to occur, for a long period [ 20 ].

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Introduction Berlanideri around the world are investigating the use of essential oils to protect food from microbial growth. In this report, the kind of polymer chain and pH affects the release of antimicrobial Bedlandieri compounds due to many factors such as electrostatic interactions, osmosis, structural changes, and environmental conditions [ 732 ].

Moreover, the Fermi model can explain and predict microbial reduction in all tested pathogens and is suitable to describe inactivation in similar matrices and under different operating conditions in the future [ 26 ].

Therefore, future investigations should be conducted for the application of CMC and starch as edible coatings with MOEO in food to confirm their antibacterial effect and mechanical and sensory properties. Nerlandieri differences were found in and values.

Journal of Food Quality

Several works in the literature focus on the evaluation of the antibacterial effect of EOs and propose them as an interesting option to ensure the safety and quality of minimally processed foods and extend their shelf life [ 1314 ]. One inconvenience of EO direct application on surfaces by dipping, powdering, or berlaneieri is that antimicrobial compounds can be neutralized or diffuse rapidly from the surface into the product [ 30 ].

Moreover, it can be observed that, for both kinds of edible films, pH values of 5 and 6 are more effective than 7. All tests were run in triplicate. Natural antimicrobial compounds effectiveness depends on the type, genus, species, and strain of the target microorganism and some food intrinsic and extrinsic factors such as pH, temperature, water content, atmospheric composition, and initial microbial load, with pH being one of the most important factors due to antimicrobial dissociation [ 3 ].

Microbial Strains of L. Moreover, there are evidences that EOs incorporated to edible films can inhibit a large variety of food-borne pathogens [ 1315 — 19 ]. Our results demonstrate that edible films can serve as carriers releasing EO onto the surface controlling bacterial growth and reducing diffusion into the agar since the EO chemically forms part of the structure of the film and interacts with the polymer and the plasticizer [ 31 ].

The difference between Berlandiei and starch polymers is the release of the antimicrobial compounds mainly thymol and carvacrol present in MOEO. Correspondence should be addressed to Raul Avila-Sosa ; xm. Inhibition curves of Staphylococcus aureus at different concentrations of Mexican oregano Lippia berlandieri Schauer essential oil and pH berlanddieri added to CMC a 0. Among them, carboxymethyl cellulose CMC and starch S are the most widespread and economic biomaterials.

MOEO was incorporated at 0. Thus, adequate pH values can change the membrane permeability and disintegrate the outer membrane of Gram-negative bacteria releasing lipopolysaccharides. Then, sorbitol Aldrich Chemical Co.

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Neotropical Plant Portal – Lippia berlandieri

Microbial modeling allows estimating the effects of key intrinsic factors such as pH on CMC and starch edible films added with MOEO, showing a synergistic effect between EO concentration and pH, so these films might have the potential to inhibit the surface growth of pathogenic microorganisms berlandoeri food by being suitable carriers of EO in different food applications. In this case, two main components of MOEO are thymol and carvacrol whose pH dissociation values are acidic 4.

The obtained spectra were compared with the respective mass spectra of pure compounds and with the mass profile of the same compounds available from the US National Institute of Standard Technology NIST library.

San Claudio, Ciudad Universitaria, Col. Journal of Food Quality. Edible Film Preparation Films were made according to the Bertuzzi et al.

Subscribe to Table of Contents Alerts. The aim of this work was to evaluate the effect of pH and Mexican oregano essential oil concentration added to CMC and S edible films on Listeria monocytogenes and Staphylococcus aureus.

Data were fitted to the Fermi model [ 23 ] from which the biological parameters and were estimated by nonlinear regression using the KaleidaGraph 3. Essential oils also have the additional effect of maintaining the quality of the food during storage, including sensorial, nutritional, and functional properties [ 45 ].

In addition, its chemical, physical, and functional characteristics make them suitable to add essential oils EOs as antimicrobials [ 10 — 12 ]. Listeria monocytogenes and Staphylococcus aureus Fermi model biological parameters values at different concentrations of Mexican oregano Lippia berlandieri Schauer essential oil and pH values added to CMC and starch edible films.

The data used to support the findings of this study are available from the corresponding author upon request. Currently, research has been focused on the use of edible films due to their safety regarding consumption and friendly relation with the environment, and coating materials being used currently include polysaccharides cellulose derivatives, starch, chitin, and gumsproteins soy, milk, gelatin, corn zein, and glutenand lipids oils, waxes, and resins [ 9 ].

This is an open access article distributed under the Creative Commons Attribution Licensewhich permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Inhibition curves of Listeria monocytogenes at different concentrations of Mexican oregano Lippia berlandieri Schauer essential oil and pH values added to CMC a 0.