Chemical Profiles and Anti-termite Activity of Hydrodistillation Residues From Three Aromatic Plants Acclimated in Burkina Faso

Abstract

Distillation process of aromatic plants produces a considerable amount of solid residues, which are rich in secondary metabolites known as bioactive compounds. In this context, residues from hydrodistillation of selected aromatic plants such as Mentha piperita L., Cymbopogon citratus Stapf and Eucalyptus camaldulensis Dehnh, have been studied for their total polyphenol content using Folin-Ciocalteu Reagent (FCR) method, total flavonoid content using aluminium chlorid (AlCl3) and antioxidant properties were determined as DPPH radical-scavenging ability (IC50). The anti-termite activity was evaluated by a direct non-choice test. The higher antioxidant activity (IC50 = 0.20 mg/ml) and polyphenols content (224.32 mg GAE/g of dried extract) were showed with E. camaldulensis aqueous extract. However, M. piperita and C. citratus ethanolic extracts showed higher flavonoid content (190.99 and 185.19 mg QE/g of dried extract). The most active extract against termite Reticulitermes flavipes was E. camaldulensis ethanolic extract presenting toxicity at 5% and 10% w/w as concentrations. All these data showed that strategic extraction of residues from hydrodistillation can provide interesting bioactive compounds as novel anti-termite agents in plants protection and allow to give an added-value to aromatic plants.

Evaluation of the Efficacy of Two Aromatic Plant Extracts against Phytopathogenic Tomato Fungi in Burkina Faso

“…A concentration of only 10% is therefore an effective concentration for ethanolic extracts of Eucalyptus camaldulensis. Similar results were obtained by (Sankara et al, 2020) and (Bonzi-Coulibaly et al, 1997), according to whom ethanolic extracts obtained from solid residues after hydrodistillation are generally richer in total phenolic compounds and flavonoids with antifungal activity. In all cases, mycelial growth decreased as the concentration of extract in the medium increased.…”

“…Ethanol (70%) is known to be more effective for extracting polyphenols than water. (Sankara et al, 2020) evaluated the polyphenol content and antioxidant activity of ethanolic extracts obtained from solid residues after hydro-distillation. Generally speaking, these extracts are richer in total phenolic compounds and flavonoids, which justify the antitremite and antifungal activities.…”

Anti-Phytomonas activity of the lyophilized residues obtained from the distillation of Lantana camara L. essential oil

“…This is together with the phenolic compounds that are extracted from the solid residue of the hydrodistillation of R. o cinalis, which have a deterrent effect on pest insects (Sánchez-Vioque et al, 2015). Sankara et al (2020) reported that the residues from the hydrodistillation of Eucalyptus camaldulensis could provide interesting bioactive compounds, as new anti-termite agents in plant protection. Mahmoudi et al (2020) also reported that hydrodistilled basil leaves (Ocimum basilicum) have a good repellent activity against the stored grain pests, Tribolium castaneum.…”

The effect of ethanol/water concentration on phenolic composition, antioxidant, and antimicrobial activities of Rosmarinus tournefortii de Noé hydrodistillation solid residues

“…Furthermore, the solid residue of rosemary is rich with non-volatile bioactive compounds known as secondary metabolites, including phenolic acids and phenolic diterpenes such as rosmarinic acid, caffeic acid, carnosic acid, carnosol, as well as some flavonoids. These constituents are known to be potent antioxidants, antimicrobial, antiproliferative, anticancer, anti-diabetic, anti-inflammatory, anti-viral, and anti-atherogenic [11][12][13][14][15][16][17][18]. Each feature makes these residues useful as health-promoting compounds, as ingredients for anti-aging agents in cosmetics products, and as antioxidant food additives, simultaneously increasing the crop's profit.…”