4.5 Article

Peppermint Essential Oil and Its Major Volatiles as Protective Agents against Soft Rot Caused by Fusarium sambucinum in Cera Pepper (Capsicum pubescens)

Journal

CHEMISTRY & BIODIVERSITY
Volume 19, Issue 1, Pages -

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/cbdv.202100835

Keywords

Capsicum pubescens; Fusarium sambucinum; essential oil; Mentha piperita; in situ antifungal activity

Funding

  1. CONACyTMexico [1004093]
  2. CONACyT-Mexico

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The investigation demonstrates the antifungal activity of peppermint essential oil and its major volatiles against Fusarium sambucinum, delaying the onset of soft rot symptoms in cera peppers while maintaining fruit quality and nutritional content. These components also exert a preservative effect on carotenoids, ascorbic acid, and capsaicinoids in the fruits, making them a potential ecological alternative for postharvest control of fusariosis.
Cera pepper (Capsicum pubescens) is an exotic fruit considered as a rich source of nutraceuticals with known benefits for human health and also an economic resource for local producers in Mexico. The present investigation reports on the in vitro and in situ antifungal activity of the essential oil from Mentha piperita and its two major volatiles (menthol and menthone) against Fusarium sambucinum, which is a causal agent of soft rot in cera pepper. The application of these components in pepper fruits previously infected with F. sambucinum caused a significant delay (p<0.05) in the emergence of soft rot symptoms. This effect was reflected in the maintenance of pH and fruit firmness during a period of 10 days. The nutrimental content of the fruits (protein, fiber, fat and other proximate parameters) was conserved in the same period of time. The nutraceutical content of these fruits was estimated by the quantification of seven carotenoids (violaxanthin, cis-violaxanthin, luteoxanthin, antheraxanthin, lutein, zeaxanthin and beta-carotene), ascorbic acid and capsaicinoids (capsaicin and dihydrocapsaicin). According to our results, the essential oil from M. Piperita and its major volatiles exerted a preservative effect on these metabolites. Our findings demonstrated that the essential oil of M. Piperita and its major volatiles represent an ecological alternative for the control of fusariosis caused by F. sambucinum in cera peppers under postharvest conditions.

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