Inhibitory Effects of Thai Essential Oils on Potentially Aflatoxigenic <i>Aspergillus parasiticus</i> and <i><i>Aspergillus flavus</i></i>

Abstract

The antiaflatoxigenic and antifungal activities of essential oils EOs of finger root Boesenbergia rotunda L. Mansf. , pine Pinus pinaster , rosewood Aniba rosaedora , Siam benzoin Styrax tonkinensis , Thai moringa Moringa oleifera , and ylang ylang Cananga odorata were tested for Aspergillus parasiticus and Aspergillus flavus in potato dextrose broth. Aflatoxin B 1 AFB 1 was extracted from culture using a QuEChERS-based extraction procedure and analyzed with high performance liquid chromatography HPLC coupled to a fluorescence detector. EO of pine showed the greatest inhibition of growth and AFB 1 production of A. parasiticus, followed by EOs of rosewood, finger root, Siam benzoin, and ylang ylang. EO of finger root gave the best inhibitory effects on A. flavus, followed by EOs of rosewood, pine, ylang ylang, and Siam benzoin. EO of Thai moringa did not show any significant inhibition of aflatoxigenic fungi. The antiaflatoxigenic activities of EOs correlated with their antifungal activities in the dosedependent manner. Comparison of the application of the five selected EOs in peanut pods by direct and vapor exposure indicated that the AFB 1 production inhibitory effects of the five EOs by direct exposure were faster and more effective than by vapor exposure. EO of finger root showed the best inhibition of AFB 1 production of A. flavus in peanut pods by direct exposure, followed by EOs of pine, rosewood, ylang ylang, and Siam benzoin.

A New Benzaldehyde Derivative Exhibits Antiaflatoxigenic Activity against Aspergillus flavus

“…One of them is to protect the food materials with safe chemical compounds. These compounds include the active constituents of herbs, essential oils, pesticides, microbial metabolites, and newly synthesized derivatives as inhibitors [41][42][43][44]. Therefore, the search for new compounds that are effectively antiaflatoxigenic, biodegradable, and toxicologically safe has motivated many studies.…”

Flower Power: An Overview on Chemistry and Biological Impact of Selected Essential Oils from Blossoms

“…Moreover, inhalation of ylang-ylang essential oil decreased anxiety and increased the social and cognitive abilities of autism-like rats 233 . Other studies suggested antiviral 238 and antifungal 239 effects of ylang-ylang essential oil. Finally, the possibility of application against insects, especially mosquitoes, should be mentioned 227 , 228 , 229 .…”

Aflatoxins in Cereals and Cereal-Based Products: Occurrence, Toxicity, Impact on Human Health, and Their Detoxification and Management Strategies

“…These EOs can be recovered and reused from citrus waste and are eco-friendly fungicides that could also be profitable for the agriculture sector [ 214 ]. The EOs extracted from Cananga odorata showed antifungal activity against A. parasiticus and A. flavus at 4 mg/mL [ 215 ]. The shelf life of brown rice was enhanced by Michelia alba oil in combination with linalool and caryophyllene at different ratios, while a 1:10 ratio showed the strongest antifungal activity against A. flavus [ 216 ].…”