Titre :	Etude des activités biologiques de l’huile essentielle extraite des graines de foeniculum vulgare Mill : en vue de son utilisation comme conservateur alimentaire.
Type de document :	texte imprimé
Auteurs :	Ali Bouguerra, Auteur ; Malika Barkat, Directeur de thèse
Editeur :	Constantine : Université Mentouri Constantine
Année de publication :	2012
Importance :	111 f.
Format :	31 cm.
Langues :	Français (fre)
Catégories :	Français - Anglais Nutrition, Alimentation et Technologies Agro-Alimentaires
Tags :	Biotechnologie alimentaire: Sciences Alimentaires  Huile essentielle  activité antioxydante  activité antibactérienne  activité antifongique  Foeniculum vulgare Mill Essential oil  antioxidant activity  antibacterial activity  antifungal  Feoniculum vulgare Mill  الزیوت الأساسیة  الفاعلیة المضادة للأكسدة  الفاعلیة المضادة للبكتیریا  الفاعلیة المضادة للفطریات  (Foeniculum vulgare Mill.) ذرة الشمرة
Index. décimale :	640 Industrie Alimentaire
Résumé :	The synthetic food conservatives are limited in several countries, because of their undesirable effects on health. Moreover, the current trend of the consumers seeks a more natural food increased during these last decades. Several research tasks have concentrated on the essential oils extracted from the aromatic plants. The various results published have indicated that they are endowed with several biological properties. In this context, we tried to evaluate antioxidant, antibacterial and antifungal activities of essential oil extracted from Foeniculum vulgare Mill. seeds. The extraction was carried out by water distillation Clevenger’s type apparatus, the yield was 0.79±0.02%. The evaluation of the antiradical activity of the fennel seeds essential oil was evaluated by the reduction of the DPPH• method. The EC50 (efficiencies’ concentration) obtained is 752.65±32.5µg.ml-1. The fennel seeds essential oil shows also a very interesting antioxidant activity (81.74± 3.92%) by the of β-Carotene bleaching method. Diffusion Method has demonstrated that the fennel seeds essential oil has a feeble antibacterial activity. Minimum inhibitory concentrations (MIC) and minimum bactericidal concentration (MBC) are estimated by agar dilution method, the MIC obtained are included between 20 000 and 45 000 µg.ml-1, the MBC proved also raised. The antifungal activities of the essential oil against fungi were undertaken using inverted petriplate. The results obtained indicate that the fennel seeds essential oil has strong activity. Minimum fongistatic concentrations (MFCS), and minimum fungicidal concentration (MFCC) were estimated by broth dilution method, the MFCS obtained are included between 625 and 1250µg.ml-1, the MFCC obtained is 1250µg.ml-1. The antifungal index (AI50) were estimated, the Alternaria was most sensitive where his AI50 was 26.22±0,693µg.ml-1. With the rise of this study, we can conclude that the fennel seeds essential oil could be regarded as a very promising preservative for food industry able to prevent the oxidation of food and to reduce growth in of deterioration of food and producing mycotoxins mycelial.
Note de contenu :	Annexes.
Diplôme :	Magistère
En ligne :	../theses/agronomie/BOU6092.pdf
Format de la ressource électronique :	pdf
Permalink :	index.php?lvl=notice_display&id=5996

Etude des activités biologiques de l’huile essentielle extraite des graines de foeniculum vulgare Mill : en vue de son utilisation comme conservateur alimentaire. [texte imprimé] / Ali Bouguerra, Auteur ; Malika Barkat, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2012 . - 111 f. ; 31 cm.
Langues : Français (fre)

Catégories :	Français - Anglais Nutrition, Alimentation et Technologies Agro-Alimentaires
Tags :	Biotechnologie alimentaire: Sciences Alimentaires  Huile essentielle  activité antioxydante  activité antibactérienne  activité antifongique  Foeniculum vulgare Mill Essential oil  antioxidant activity  antibacterial activity  antifungal  Feoniculum vulgare Mill  الزیوت الأساسیة  الفاعلیة المضادة للأكسدة  الفاعلیة المضادة للبكتیریا  الفاعلیة المضادة للفطریات  (Foeniculum vulgare Mill.) ذرة الشمرة
Index. décimale :	640 Industrie Alimentaire
Résumé :	The synthetic food conservatives are limited in several countries, because of their undesirable effects on health. Moreover, the current trend of the consumers seeks a more natural food increased during these last decades. Several research tasks have concentrated on the essential oils extracted from the aromatic plants. The various results published have indicated that they are endowed with several biological properties. In this context, we tried to evaluate antioxidant, antibacterial and antifungal activities of essential oil extracted from Foeniculum vulgare Mill. seeds. The extraction was carried out by water distillation Clevenger’s type apparatus, the yield was 0.79±0.02%. The evaluation of the antiradical activity of the fennel seeds essential oil was evaluated by the reduction of the DPPH• method. The EC50 (efficiencies’ concentration) obtained is 752.65±32.5µg.ml-1. The fennel seeds essential oil shows also a very interesting antioxidant activity (81.74± 3.92%) by the of β-Carotene bleaching method. Diffusion Method has demonstrated that the fennel seeds essential oil has a feeble antibacterial activity. Minimum inhibitory concentrations (MIC) and minimum bactericidal concentration (MBC) are estimated by agar dilution method, the MIC obtained are included between 20 000 and 45 000 µg.ml-1, the MBC proved also raised. The antifungal activities of the essential oil against fungi were undertaken using inverted petriplate. The results obtained indicate that the fennel seeds essential oil has strong activity. Minimum fongistatic concentrations (MFCS), and minimum fungicidal concentration (MFCC) were estimated by broth dilution method, the MFCS obtained are included between 625 and 1250µg.ml-1, the MFCC obtained is 1250µg.ml-1. The antifungal index (AI50) were estimated, the Alternaria was most sensitive where his AI50 was 26.22±0,693µg.ml-1. With the rise of this study, we can conclude that the fennel seeds essential oil could be regarded as a very promising preservative for food industry able to prevent the oxidation of food and to reduce growth in of deterioration of food and producing mycotoxins mycelial.
Note de contenu :	Annexes.
Diplôme :	Magistère
En ligne :	../theses/agronomie/BOU6092.pdf
Format de la ressource électronique :	pdf
Permalink :	index.php?lvl=notice_display&id=5996