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Evaluation of Protective Impact of Algerian <I>Cuminum cyminum </I>L. and <I>Coriandrum sativum</I> L. Essential Oils on <I>Aspergillus flavus </I>Growth and Aflatoxin B<SUB>1</SUB> Production.
BACKGROUND AND OBJECTIVE: Aflatoxin B1 (AFB1) is a highly toxic and carcinogenic metabolite produced by Aspergillus species on food and agricultural commodities. The aim of this investigation was to evaluate the inhibition of growth Aspergillus flavus E73 (A. flavus E73) and AFB1 production by Cuminum cyminum L. (C. cyminum L.) and Coriandrum sativum L. (C. sativum L.) essential oils (EOs) as well their antioxidant and phytotoxicity activities.
METHODOLOGY: The C. cyminum L. and C. sativum L. EOs were extracted by hydrodistillation. The chemical profile of EOs was identified by GC-MS, antifungal activity was assessed by poisoned food technique and in term Minimal Inhibitory Concentration (MIC) and minimal fungicidal concentration (MFC) and antiaflatoxin effect by broth medium. The antioxidant activity of EOs was determined by DPPH free radical scavenging assay, β-carotene bleaching test and total phenolic content by Folin-Ciocalteu. Phytotoxicity of C. cyminum L. and C. sativum L. EOs were determined for varieties of wheat. The results were analyzed by analysis of variance (one way ANOVA).
RESULTS: The GS/MS analysis showed that the major components of C. cyminum L. EO were cuminaldehyde (65.98%), o-cymene (18.40%) and C. sativum L. EO was mainly consisted of linalool (78.86%). The results showed that both the EOs could inhibit the growth of A. flavus E73 in the range of 24.27-84.90% for C. cyminum and 15.09-65.00% for C. sativum. During antiaflatoxin investigation, the oils exhibited noticeable inhibition on dry mycelium weight and synthesis of AFB1 by A. flavus E73. EOs of C. cyminum L. and C. sativum L. revealed complete inhibition of AFB1 at 1.25 and 1.5 mg mL-1, respectively. EOs exhibited inhibitory influence against some fungi. The IC50 values of C. cyminum L. and C. sativum L. EOs were 494.93 and 756.43 μg mL-1, respectively, while, β-carotene/linoleic acid bleaching was 47.68 and 29.29% , respectively. Total phenolic content of C. cyminum L. and C. sativum L. were 10.66 and 6.2 μg mg-1. Additionally, the EOs were non-phytotoxic on the two verities of wheat seeds.
CONCLUSION: The C. cyminum L. and C. sativum L EOs could be good alternative to protect foods.
METHODOLOGY: The C. cyminum L. and C. sativum L. EOs were extracted by hydrodistillation. The chemical profile of EOs was identified by GC-MS, antifungal activity was assessed by poisoned food technique and in term Minimal Inhibitory Concentration (MIC) and minimal fungicidal concentration (MFC) and antiaflatoxin effect by broth medium. The antioxidant activity of EOs was determined by DPPH free radical scavenging assay, β-carotene bleaching test and total phenolic content by Folin-Ciocalteu. Phytotoxicity of C. cyminum L. and C. sativum L. EOs were determined for varieties of wheat. The results were analyzed by analysis of variance (one way ANOVA).
RESULTS: The GS/MS analysis showed that the major components of C. cyminum L. EO were cuminaldehyde (65.98%), o-cymene (18.40%) and C. sativum L. EO was mainly consisted of linalool (78.86%). The results showed that both the EOs could inhibit the growth of A. flavus E73 in the range of 24.27-84.90% for C. cyminum and 15.09-65.00% for C. sativum. During antiaflatoxin investigation, the oils exhibited noticeable inhibition on dry mycelium weight and synthesis of AFB1 by A. flavus E73. EOs of C. cyminum L. and C. sativum L. revealed complete inhibition of AFB1 at 1.25 and 1.5 mg mL-1, respectively. EOs exhibited inhibitory influence against some fungi. The IC50 values of C. cyminum L. and C. sativum L. EOs were 494.93 and 756.43 μg mL-1, respectively, while, β-carotene/linoleic acid bleaching was 47.68 and 29.29% , respectively. Total phenolic content of C. cyminum L. and C. sativum L. were 10.66 and 6.2 μg mg-1. Additionally, the EOs were non-phytotoxic on the two verities of wheat seeds.
CONCLUSION: The C. cyminum L. and C. sativum L EOs could be good alternative to protect foods.
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