Inhibitory effect of essential oils against Colletotrichum gloeosporioides and Rhizopus stolonifer in stored papaya fruit and their possible application in coatings

2010 ◽  
Vol 57 (2) ◽  
pp. 132-137 ◽  
Author(s):  
E. Bosquez-Molina ◽  
E. Ronquillo-de Jesús ◽  
S. Bautista-Baños ◽  
J.R. Verde-Calvo ◽  
J. Morales-López
Keyword(s):  
Essential Oils ◽  
Colletotrichum Gloeosporioides ◽  
Inhibitory Effect ◽  
Rhizopus Stolonifer

Chemical composition, antibacterial and antioxidant activities of Juniperus oxycedrus essential oils from North Western Algeria

2018 ◽  
Vol 7 (2) ◽  
pp. 74-83
Author(s):  
Cherifa Zahaf ◽  
Djilali Achour ◽  
Meriem Mokhtar ◽  
Moussa Brada
Keyword(s):  
Essential Oils ◽  
Steam Distillation ◽  
Antioxidant Activities ◽  
Inhibition Zone ◽  
Inhibitory Effect ◽  
Juniperus Oxycedrus ◽  
Germacrene D ◽  
Western Algeria ◽  
North Western ◽  
Β Carotene

The aim of the current study was to identify the essential oils of Juniperus oxycedrus from North Western Algeria (Mostaganem) by gas chromatography coupled to mass spectrometer (GC-MS), and to evaluate their antibac-terial and antioxidant activities. Extraction was carried out by two processes, hydrodistillation (HD) and steam distillation (SD). Analysis by GC-MS led to the identification of 38 components using both methods. HD was found to be the best process for the extraction of Juniperus essential oil, and the ma-jor identified compounds were: germacrene-D (38.28%), followed by α.-pinene (17.66%), and δ-cadinene (5.91%). In the antibacterial test, SD oil had a higher inhibitory effect. The strain Staphylococcus aureus was the most sensitive with an inhibition zone of 15.25 mm and a minimum inhibitory concentration (MIC) of 0.25 mg/mL. The antioxidant activity of J. oxycedrus es-sential oils obtained by HD was more important than SD (IC50= 19.52 mg/mL and IC50= 38.62 mg/mL) with DPPH and β-carotene bleaching tests respec-tively. Essential oils of J. oxycedrus could therefore represent good candidates to be used as antioxidant and antibacterial agents.

scholarly journals Application of Volatile Antifungal Plant Essential Oils for Controlling Pepper Fruit Anthracnose by Colletotrichum gloeosporioides

2015 ◽  
Vol 31 (3) ◽  
pp. 269-277 ◽  
Author(s):  
Jeum Kyu Hong ◽  
Hye Ji Yang ◽  
Heesoo Jung ◽  
Dong June Yoon ◽  
Mee Kyung Sang ◽  
...  
Keyword(s):  
Essential Oils ◽  
Colletotrichum Gloeosporioides ◽  
Plant Essential Oils ◽  
Pepper Fruit

scholarly journals Antifungal activity of Mentha piperita and Carum carvi essential oils

2017 ◽  
pp. 201-207 ◽  
Author(s):  
Dragana Plavsic ◽  
Gordana Dimic ◽  
Djordje Psodorov ◽  
Dragan Psodorov ◽  
Ljubisa Saric ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Essential Oils ◽  
Inhibition Zone ◽  
Inhibitory Effect ◽  
Biologically Active ◽  
Mentha Piperita ◽  
Diffusion Method ◽  
Aromatic Plants ◽  
Disc Diffusion Method ◽  
Penicillium Aurantiogriseum

Aromatic plants are one of the most important sources of biologically active secondary metabolites, which possess various antimicrobial characteristics. The aim of this work was to examine the effect of antifungal activities of mint and caraway essential oils against the selected fungi. Eight species of molds were selected for antifungal testing: Alternaria alternata, Aspegillus flavus, A. niger, A. versicolor, Eurotium herbariorum, Penicillium aurantiogriseum, P. chrysogenum and P. expansum. Testing of essential oils antifungal activity against the selected species was conducted using the disc diffusion method by adding mint and caraway essential oils (0.5, 1, 5, and 10 ?l per disc). Antifungal activity of essential oils was expressed by the diameter of inhibition zone (mm). The most powerful effect of mint essential oil was recorded against E. herbariorum, as its growth was completely inhibited by the quantity of 5 ?l. The weakest inhibitory effect was observed against P. chrysogenum (inhibition zone 13.67 mm) by the quantity of 10 ?l. The most powerful antifungal activity of caraway was observed against E. herbariorum as growth was completely inhibited by the quantity of 10 ?l. The weakest inhibitory effect was observed against A. niger (inhibition zone 28 mm) by the quantity of 10 ?l.

scholarly journals Antibacterial activity of plant extracts against Listeria monocytogenes isolated from ready-to-eat salads

2020 ◽  
Vol 13 (1) ◽  
pp. 131-143
Author(s):  
É. György ◽  
É. Laslo ◽  
E. Csató
Keyword(s):  
Listeria Monocytogenes ◽  
Essential Oils ◽  
Antibacterial Effect ◽  
Storage Conditions ◽  
Inhibitory Effect ◽  
Listeria Innocua ◽  
Foodborne Diseases ◽  
Bacterial Strains ◽  
Antibacterial Effects ◽  
Growth Environment

Abstract Ready-to-eat salads are becoming more and more popular. However, due to their ingredients, they represent a suitable growth environment for different microbes. In the prevention of foodborne diseases, hygienic food preparation and appropriate storage conditions are very important. During this study, ten different ready-to-eat salads were analysed for the presence of Listeria monocytogenes. Five different selective agar mediums were used for the enumeration and isolation of Listeria monocytogenes. The isolated bacterial strains were subjected to morphological and biochemical confirmation tests. The antibacterial effects of five different freshly squeezed vegetable juices (carrots, celery, beets, horseradish, and onions) and of five essential oils (dill, thyme, oregano, lemongrass, and sage) were determined against Listeria monocytogenes, Listeria innocua, and L. monocytogenes strains isolated from ready-to-eat salads. Based on the results obtained from fresh vegetable juices, carrot juice exerted the highest antibacterial effect, while the others showed no or slight inhibitory effect (horseradish, beets, onions) against Listeria species. Among the essential oils, thyme, lemongrass, and oregano showed the strongest antibacterial effect against the studied Listeria species.

scholarly journals Potencial antifúngico de Citrus sinensis y Citrus nobilis sobre el crecimiento de Rhizopus stolonifer y Colletotrichum gloeosporioides en papaya

2017 ◽  
Vol 10 (1) ◽  
pp. 41-46
Author(s):  
Flor Jajaira Narváez Baque ◽  
Sonia Barzola Miranda ◽  
Flor Marina Fon-Fay Vásquez ◽  
Malena Jacqueline Martínez Chávez ◽  
Juan Alejandro Neira Mosquera ◽  
...  
Keyword(s):  
Citrus Sinensis ◽  
Colletotrichum Gloeosporioides ◽  
Rhizopus Stolonifer ◽  
Factor B ◽  
Factor C

En este estudio se evalúo el efecto antifúngico de los aceites esenciales de hojas y pericarpio de Citrus sinensis (Naranja) y Citrus nobilis (Mandarina) sobre el crecimiento de los hongos Rhizopus stolonifer y Colletotrichum gloeosporioides aislados de papaya Maradol. Se aplicó un análisis estadístico con un arreglo factorial de bloques A(2)xB(2)xC(3) con 2 repeticiones considerando como Factor A: Aceites esenciales (Citrus sinensis y Citrus nobilis), Factor B: Origen de los aceites esenciales (hojas y pericarpio), Factor C: Concentraciones (1%, 2% y 4%); se evaluó durante siete días el crecimiento radial de los hongos y posteriormente se realizó el conteo de esporas en la cámara de Neubauer. Para el análisis de datos se empleó el paquete estadístico StatGraphics; para la separación de medias de los niveles de los tratamientos se realizó la prueba de significación Tukey (p

scholarly journals Potencial antifúngico de Citrus sinensis y Citrus nobilis sobre el crecimiento de Rhizopus stolonifer y Colletotrichum gloeosporioides en papaya

2017 ◽  
Vol 10 (1) ◽  
pp. 41-46
Author(s):  
Flor Jajaira Narváez Baque ◽  
Sonia Barzola Miranda ◽  
Flor Marina Fon-Fay Vásquez ◽  
Malena Jacqueline Martínez Chávez ◽  
Juan Alejandro Neira Mosquera ◽  
...  
Keyword(s):  
Citrus Sinensis ◽  
Colletotrichum Gloeosporioides ◽  
Rhizopus Stolonifer ◽  
Factor B ◽  
Factor C

En este estudio se evalúo el efecto antifúngico de los aceites esenciales de hojas y pericarpio de Citrus sinensis (Naranja) y Citrus nobilis (Mandarina) sobre el crecimiento de los hongos Rhizopus stolonifer y Colletotrichum gloeosporioides aislados de papaya Maradol. Se aplicó un análisis estadístico con un arreglo factorial de bloques A(2)xB(2)xC(3) con 2 repeticiones considerando como Factor A: Aceites esenciales (Citrus sinensis y Citrus nobilis), Factor B: Origen de los aceites esenciales (hojas y pericarpio), Factor C: Concentraciones (1%, 2% y 4%); se evaluó durante siete días el crecimiento radial de los hongos y posteriormente se realizó el conteo de esporas en la cámara de Neubauer. Para el análisis de datos se empleó el paquete estadístico StatGraphics; para la separación de medias de los niveles de los tratamientos se realizó la prueba de significación Tukey (p

scholarly journals 2,4-EPIBRASSIONOLIDE ACTIVATES PRIMING RESISTANCE AGAINST RHIZOPUS STOLONIFER INFECTION IN PEACH FRUIT

2020 ◽  
Vol 49 (2) ◽  
pp. 135-143
Author(s):  
C.H. Li ◽  
M.Y. Du ◽  
K.T. Wang
Keyword(s):  
Fungal Infection ◽  
Inhibitory Effect ◽  
The Other ◽  
Antifungal Compounds ◽  
Rhizopus Stolonifer ◽  
Peach Fruit ◽  
Direct Inhibitory Effect ◽  
Potential Alternative ◽  
Direct Toxicity

This study was conducted to assess the effects of 2,4-epibrassionolide (EBR) on mold decay caused by Rhizopus stolonifer and its capability to activate biochemical defense reactions in postharvest peaches. The treatment of EBR at 5 μM possessed the optimum effectiveness on inhibiting the Rhizopus rot in peach fruit among all treatments. The EBR treatment significantly up-regulated the expression levels of a set of defense-related enzymes and PR genes that included PpCHI, PpGns1, PpPAL, PpNPR1, PpPR1 and PpPR4 as well as led to an enhancement for biosynthesis of phenolics and lignins in peaches during the incubation at 20 °C. Interestingly, the EBR-treated peaches exhibited more striking expressions of PR genes and accumulation of antifungal compounds upon inoculation with the pathogen, indicating a priming defense could be activated by EBR. On the other hand, 5 μM EBR exhibited direct toxicity on fungal proliferation of R. stolonifer in vitro. Thus, we concluded that 5 μM EBR inhibited the Rhizopus rot in peach fruit probably by a direct inhibitory effect on pathogen growth and an indirect induction of a priming resistance. These findings provided a potential alternative for control of fungal infection in peaches during the postharvest storage.

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