Jeferson A. S. Assunção, Camila G. Oliveira
Piper aduncum L. (Piperaceae) is a neotropical species widely recognized for its bioactive essential oils (EOs), which exhibit antifungal, insecticidal, viricidal, and antimicrobial properties. This study investigates the influence of circadian rhythms on the chemical composition and yield of P. aduncum EOs cultivated under agroecological conditions in the Rio de Janeiro Botanical Garden. Fresh leaves were collected every three hours over a 24 h cycle during both dry (July 2023) and rainy (February 2024) seasons. EOs were extracted by hydrodistillation and analyzed using GC-MS and GC-FID. A total of 20 compounds were identified in the dry season, while 10 were detected in the rainy season. Dillapiole was the predominant constituent in both periods, ranging from 75.78% to 88.27% (dry) and 75.90% to 90.86% (rainy). The highest EO yield was observed at 3:00 p.m. (0.73%) in the dry season and at 12:00 p.m. (0.61%) in the rainy season. Despite seasonal variations in chemical diversity, dillapiole content remained stable, reinforcing its biotechnological potential. The results highlight the importance of optimized harvesting times to maximize EO yield and composition, contributing to the sustainable exploitation of P. aduncum for medicinal and agricultural applications.
@article{07025cd7-fe8a-4137-98f0-6efe334d102d,
title={Temporal Variation in the Essential Oil Production},
author={Jeferson A. S. Assunção and Camila G. Oliveira},
year={2026},
language={en}
}TY - JOUR TI - Temporal Variation in the Essential Oil Production AU - Jeferson A. S. Assunção AU - Camila G. Oliveira PY - 2026 LA - en ER -
Mudila Dhanunjaya Rao, Kamalesh K. Singh
Rapid global technological development has resulted in increased production of electronic waste, which presents both challenges and opportunities in r
Roger Rumbu
This paper addresses the challenge of assessing the feasibility of wind power plant projects at sites with insufficient or no local historic wind data
Muhammad Murtala Mainasara, Hassan Muhammad Maishanu, Priscilla Bamai John, Shuaibu Babaji Sanusi
The health of the mother determines the health of the child; indigenous methods and materials have been used since ages in maternal health care both b
Important advances in electrochemical engineering technology over the last three decades have fostered the development of a lternative methods to alle