The deep impacting microwave irradiation on the quality and antioxidant capacity of rosemary essential oils obtained by solvent-free microwave extraction

Meziane-Assami, Dalila; Ghouila, Z.; Assami, Karim; Meklati, B. Y.; Chémat, Farid

doi:10.1080/10412905.2021.2008028

Cited by 8 publications

(2 citation statements)

References 24 publications

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“…However, its antioxidant capacity may also be attributed to some of its volatile constituents such as linalyl acetate, which has previously proven antioxidant potential in different assays, either in pure form or in oils where it is found as a major compound [ 33 ]. In addition to the different levels of different chemical components in the tested essential oils, the interactions between these components, namely antagonistic and synergetic, could affect the observed antioxidant properties [ 34 , 35 , 36 ].…”

Section: Resultsmentioning

confidence: 99%

GC-MS Chemical Profiling, Biological Investigation of Three Salvia Species Growing in Uzbekistan

et al. 2022

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Salvia is a potentially valuable aromatic herb that has been used since ancient times. The present work studied the chemical profile of three Salvia species essential oils (EO): S. officinalis, S. virgata and S. sclarea, as well as assessing their antioxidant and enzyme inhibitory activities. A total of 144 compounds were detected by GC-MS analysis, representing 91.1, 84.7 and 78.1% in S. officinalis, S. virgata and S. sclarea EOs, respectively. The major constituents were cis-thujone, 2,4-hexadienal and 9-octadecenoic acid, respectively. The principal component analysis (PCA) score plot revealed significant discrimination between the three species. The antioxidant activity of the EOs was evaluated using in vitro assays. Only S. virgata EO showed antioxidant activity in the 2,2-diphenyl-1-picryl-hydrazyl (DPPH) assay (26.6 ± 1.60 mg Trolox equivalent (TE)/g oil). Moreover, this oil exhibited the highest antioxidant activity in 2,2-azino bis (3-ethylbenzothiazoline-6-sulphonic acid) (ABTS), cupric-reducing antioxidant capacity (CUPRAC) and ferric-reducing power (FRAP) assays in comparison with the other two EOs (190.1 ± 2.04 vs. 275.2 ± 8.50 and 155.9 ± 1.33 mg TE/g oil, respectively). However, S. virgata oil did not show any effect in the chelating ability assay, while in the PBD assay, S. officinalis had the best antioxidant activity (26.4 ± 0.16 mmol TE/g oil). Enzyme inhibitory effect of the EOs was assessed against acetylcholinesterase (AChE) and butyrylcholinesterase (BChE), tyrosinase, α-glucosidase and α-amylase. AChE enzyme was more sensitive to S. officinalis EO (4.2 ± 0.01 mg galantamine equivalent (GALAE)/g oil), rather than S. virgata EO, which was ineffective. However, S. virgata had the highest BChE effect (12.1 ± 0.16 mg GALAE/g oil). All studied oils showed good tyrosinase inhibitory activity, ranging between 66.1 ± 0.61 and 128.4 ± 4.35 mg kojic acid equivalent (KAE)/g oil). Moreover, the EOs did not exhibit any glucosidase inhibition and were weak or inefficient on amylase enzyme. Partial least squares regression (PLS-R) models showed that there is an excellent correlation between the antioxidant activity and the volatile profile when being compared to that of enzyme inhibitory activity. Thus, the studied Salvia essential oils are interesting candidates that could be used in drug discovery for the management of Alzheimer’s and hyperpigmentation conditions.

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Section: Resultsmentioning

confidence: 99%

GC-MS Chemical Profiling, Biological Investigation of Three Salvia Species Growing in Uzbekistan

et al. 2022

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“…Rosemary essential oil can be isolated using various methods of extraction such as hydrodistillation (Larkeche et al ., 2021), supercritical carbon dioxide extraction (Allawzi et al ., 2019), solvent extraction (Sadeh et al ., 2019), and simultaneous distillation–extraction (Meziane‐Assami et al ., 2021). Numerous publications have pointed out variations in the composition and yield of essential oils, suggesting that these variations can be related to the type of extraction process (Chemat et al ., 2017).…”

Section: Introductionmentioning

confidence: 99%

Infrared‐assisted hydrodistillation as an efficient, promising approach to the extraction of essential oil from Rosmarinus officinalis

Taheri

Asadiamirabadi

Seyedabadi

et al. 2023

Int J of Food Sci Tech

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Herbs and raw plant materials usually contain essential oils that are extractable by a variety of methods. The quality and quantity of essential oils are largely influenced by the method of extraction, some of which have remained unexplored. Demands for environmentally-friendly extractions are increasingly becoming common. The present study used infrared-assisted hydrodistillation (IAHD) as a new extraction method that performs faster than the classical hydrodistillation (HD) method. Here, the essential oil of Rosmarinus officinalis L. (common rosemary) was extracted from the leaves by each of the two methods separately. The essential oils were evaluated in terms of extraction kinetics, antioxidant activity, and chemical composition. Compared with the HD (2.15 AE 0.01 mL/100 g, 210 min), the IAHD generated higher yields (2.17 AE 0.02-2.51 AE 0.04 mL/100 g) over shorter periods (60-120 min), depending on the power of radiation (150-375 W). The IAHD method offered important advantages over HD, such as better maintenance of antioxidant activity in the oil and higher oil quality, e.g. enhanced levels of oxygenated compounds. Thus, it can be introduced as a promising method because of its higher extraction output and simple extraction procedure. Infrared radiation extraction can be used as a valuable substitute for classical hydrodistillation when aiming to extract essential oil from R. officinalis and other aromatic plants.

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Conservation and Sustainable Use of Medicinal Plants

Santos

Chandran

Lejaniya

et al. 2023

Sustainable Development and Biodiversity

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The deep impacting microwave irradiation on the quality and antioxidant capacity of rosemary essential oils obtained by solvent-free microwave extraction

Cited by 8 publications

References 24 publications

GC-MS Chemical Profiling, Biological Investigation of Three Salvia Species Growing in Uzbekistan

GC-MS Chemical Profiling, Biological Investigation of Three Salvia Species Growing in Uzbekistan

Infrared‐assisted hydrodistillation as an efficient, promising approach to the extraction of essential oil from Rosmarinus officinalis

Conservation and Sustainable Use of Medicinal Plants

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