Chemical Constituents of Euphorbia sanctae-catharinae Fayed Essential Oil: a Comparative Study of Hydro-distillation and Microwave-Assisted Extraction

Abstract

Objective: Microwave-assisted extraction (MAE), as an effective tool for the extraction of essential oil from medicinal and aromatic plants, has gained a great attention over the last years, thus in this study, MAE was performed to extract essential oils from aerial part of Euphorbia sanctae-catharinae. Methods: microwave-assisted extraction (MAE), as well as hydro-distillation (HD) techniques was used for oil preparation. Oil composition was studied by gas chromatographymass spectrometry analysis. Results: Essential oil constituents and percentages of the obtained oils by MAE were compared with those obtained using conventional extraction HD technique. MAE offered reduction in the extraction time with better oil yield (1.2 % w/v) than that obtained when compared to HD (0.7 % w/v). Using MAE and HD for the extraction of E. sanctae-catharinae essential oil showed difference in the composition and percentage composition of the oil obtained with valencene (16.01%) and butyl hydroxy toluene (25.58%) being the major contents of the extracted oil using HD and MAE, respectively. Conclusion: To the best of our knowledge, this is the first study for the essential oil from E. sanctae-catharinae. The tested essential oil samples did not show any significant antimicrobial activity at a concentration of 1 mg per disc.

Phytotoxic and Antimicrobial Activities of Teucrium polium and Thymus decussatus Essential Oils Extracted Using Hydrodistillation and Microwave-Assisted Techniques

“…The EOs of T. polium were extracted using hydrodistillation (HD) and microwave-assisted extraction (MAE) methods and produced 0.045% and 0.061% ( v/w ) of yellow oils, respectively. The variation of the oil yield might be attributed to the extraction method used [ 32 ]. The extracted EOs were analyzed by Gas chromatography–mass spectrometry (GC–MS) and the chemical constituents were identified and described in Table 1 .…”

“…On the other hand, the EOs extracted from T. decussatus by HD and MAE were colorless or faint yellow with a yield of 0.023% and 0.031% ( v / w ), respectively. This variation could also be ascribed to the method of extraction used [ 32 ]. Significant variations of the chemical compositions and antimicrobial activities were described among the extracted EOs of Artemisia argyi by HD, simultaneous distillation, and subcritical extraction techniques [ 46 ].…”

“…The EOs of the aerial parts (300 gm, each) of T. polium and T. decussatus were extracted separately via the HD and MAE methods, analyzed by GC–MS, and the constituents were identified as described previously by our team [ 8 , 32 ]. In brief, the HD-EOs were extracted via a Clevenger-type apparatus for 3 h. Meanwhile, the extractions of the MAE-EOs were performed using a focused microwave apparatus (CEM Corporation, Matthews, NC, USA), model (MARS 240/50, No.…”

Euphorbia-Derived Natural Products with Potential for Use in Health Maintenance

“…E. caracasana ) and E. fischeriana , and from 0.08% to 0.84% ( w / w ) in E. pilosa and E. densa . Microwave-assisted extraction (MAE) was reported only once (3%) with faster extraction time (3:1) and higher oil yield (1.2% vs. 0.7% w / v ) than conventional techniques (MAE vs. HD) [74]. Qualitative and quantitative analyses were performed by gas chromatography (GC) or GC coupled to mass spectrometry (GC-MS).…”

Laboratory and field evaluation of certain wild plant extracts against Aphis fabae Scop. (Homoptera: Aphididae) and its predators

“…Many chemical constituents were isolated from these plants viz diterpenoids, sesquiterpenes, iridoids, flavonoids aglycones, and glycosides (Cespedes et al 2015;Singh and Singh 2016). The chemical constitutes of Euphorbia species exhibited many activities as antibacterial, anti-inflammation, and antioxidant (Reda et al 2017). Peris and Kiptoo (2017) and Alghamdi (2018) stated that the botanical pesticides can be used in control of aphids, as they are environmentally safe, having low toxicity to mammals, fish, and pollinators.…”