Articles
Chemical profiling of two Eriocephalus essential oils and their antifungal potential against Diaporthe infecunda isolated from tomato
Article number
1466_73
Pages
605 – 612
Language
English
Abstract
Postharvest losses in the horticultural industry pose significant challenges to achieving profitability, food security, and sustainability.
Essential oils derived from indigenous plants exhibit high antimicrobial activity; however, their hydrophobicity and volatility limit their use in food systems.
This study investigated the phytochemical composition and antimicrobial activity of the essential oils from Eriocephalus punctulatus and Eriocephalus tenuipes against Diaporthe infecunda. GC-MS analysis revealed 76 potential compounds in the essential oils of the two Eriocephalus species, predominantly comprising carboxylic acids, esters, ketones, alcohols, monoterpenes, sesquiterpenes, and phenolic derivatives.
The chemical profile differed significantly between the two species, with E. tenuipes exhibiting higher diversity.
Antifungal assays revealed significant oil type × pathogen interactions (P≤0.05), with both species presenting strong mycelial growth inhibition. E. tenuipes demonstrated a more stable and sustained growth over the incubation period.
These findings highlight the potential of indigenous South African Eriocephalus essential oils as natural, residue-minimizing alternatives for postharvest fungal disease management of fresh produce.
Essential oils derived from indigenous plants exhibit high antimicrobial activity; however, their hydrophobicity and volatility limit their use in food systems.
This study investigated the phytochemical composition and antimicrobial activity of the essential oils from Eriocephalus punctulatus and Eriocephalus tenuipes against Diaporthe infecunda. GC-MS analysis revealed 76 potential compounds in the essential oils of the two Eriocephalus species, predominantly comprising carboxylic acids, esters, ketones, alcohols, monoterpenes, sesquiterpenes, and phenolic derivatives.
The chemical profile differed significantly between the two species, with E. tenuipes exhibiting higher diversity.
Antifungal assays revealed significant oil type × pathogen interactions (P≤0.05), with both species presenting strong mycelial growth inhibition. E. tenuipes demonstrated a more stable and sustained growth over the incubation period.
These findings highlight the potential of indigenous South African Eriocephalus essential oils as natural, residue-minimizing alternatives for postharvest fungal disease management of fresh produce.
Publication
Authors
M. Morena, Y. Silue, O.A. Fawole
Keywords
Eriocephalus punctulatus, Eriocephalus tenuipes, GC-MS analysis, antifungal
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