Revue Nature et Technologie

nature & technology journal

Description

"Nature & Technology" is a Research Journal dedicated to publish high quality peer-reviewed, Nature, Life, Environment and Technology Sciences. Its purpose is to provide a publication space for research work at universities and other research organizations at national, regional and international levels. Its publications are divided into 03 classes. Class A: Fundamental and Engineering; Class B: Agronomic and Biological Sciences; Class C: Environmental Sciences. NATEC is indexed in ProQuest, EBSCO, CiteFactor, WorldCat, MIAR, ASJP, WebReview and ResearBib. The journal is freely available under a Creative Commons License (CC-BY). Submission and publication in NATEC is free of charge.


10

Volumes

18

Numéros

249

Articles


Comparaison entre application par "contact direct" et par "microatmosphère" des huiles essentielles combinées pour la conservation des fraises fraîches pendant le stockage

Djenane Djamel,  Bouzid Hakima,  Lakhlef Zina,  Hellal Zohra, 

Résumé: Résumé L’étude “in vitro” de l’activité antifongique des difféntes huiles essentielles (HEs) vis-à-vis d’Aspergillus brasiliensis CIPF1431.83 (A. brasiliensis) a été réalisée. Les résultats obtenus ont montré que l’HE issue de Satureja montana (S. montana) exerce un pouvoir antifongique significatif (p < 0.05). Cependant, une grande capacité antifongique a été enregistrée lors de différentes combinaisons des HEs. Les performances des différents traitements exprimées en termes de Concentrations Minimales Inhibitrices (CMIs) ont donné des valeurs de l’ordre de 0,30 µl/ml, 0,625 µl/ml, 2,50 µl/ml, respectivement pour S. montana, L. nobilis/S. montana, P. lentiscus/S. montana. Cependant la combinaison P. lentiscus/L. nobilis/S. montana a donné une CMI semblable à celle obtenue avec la combinaison P. lentiscus/S. montana ( 2,50 µl/ml). Le conditionnement sous micro-atmosphère en présence de S. montana et de S. Montana/P. lentiscus comme agents bioactifs a montré une efficacité élevée à l’encontre de la moisissure étudiée et d’autres moisissures d’altération des fraises durant le stockage. Mots clés Fraises, A. brasiliensis, conditionnement micro-atmosphère, huiles essentielles, bioconservation Abstract The “in vitro” study of the antifungal activity of essential oils (EOs) with respect to Aspergillus brasiliensis CIPF1431.83 (A. brasiliensis) was carried out. The results obtained indicate that the EO of Satureja montana (S. montana) showed considerable antifungal potential (p < 0.05). Different combinations of EOs have shown great antifungal capacity. S. montana EO showed a minimum inhibitory concentration (MIC) of 0.30 l/ml, the combination L. nobilis + S. montana gave a MIC of 0.625 l/ml, whereas the combinations P. lentiscus/S. montana; P. lentiscus/L. nobilis/S. montana gave MICs of 2.50 l/ml. The design of a micro-atmosphere conditioning of fresh strawberries in the presence of S. montana and S. montana/P. lentiscus as bioactive agents for the biopreservation of fresh strawberries showed that the combination of EO showed a high efficiency against this mold studied and other molds of strawberries deterioration.

Mots clés: Strawberries; Aspergillus brasiliensis; micro-atmosphere; essential oils; biopreservation.


DYNAMIC BEHAVIOR ANALYSIS OF FUNCTIONALLY GRADED NANOPLATES BASED ON ELASTIC FOUNDATIONS

عبدالباقي شيخ,  حبيب حبالي,  عبدالواحد تونسي,  عبدالغاني بلطاش, 

Résumé: An analytical study to predict the behavior of FGM Nano-plates supported by Pasternak elastic foundations based on a theory of hyperbolic shear strain. Nonlocal elasticity theory is used to introduce the effect of small scale. The influence of the parameters of the geometry, the stiffness of the foundations and the material property are presented. The results obtained are compared with those of literature.

Mots clés: Pasternak elastic foundations ; Hyperbolic shear strain ; Nano-plates