Lavandula x intermedia essential oil and hydrolate: Evaluation of chemical composition and antibacterial activity before and after formulation in nanoemulsion

Garzoli, Stefania; Petralito, Stefania; Ovidi, Elisa; Turchetti, Giovanni; Masci, Valentina Laghezza; Tiezzi, Antonio; Trilli, Jordan; Cesa, Stefania; Casadei, Maria Antonietta; Giacomello, Pierluigi; Paolicelli, Patrizia

doi:10.1016/j.indcrop.2019.112068

Cited by 62 publications

(46 citation statements)

References 39 publications

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“…The most abundant compounds were oxygenated monoterpenes (91.2 %) such as linalool (23.1 %), camphor (16.3 %), 1,8-cineole (14.5 %), linalool acetate (10.0 %), borneol (5.2 %) and caryophyllene oxide (2.1 %). Similar oil patterns have been reported in previously published papers (Bajalan et al, 2017;Blažeković et al, 2018;Carrasco et al, 2016;Garzoli et al, 2020). Sesquiterpenes and their oxygenated forms are much less abundant in the essential oil than oxygenated monoterpenes with total values of 0.7 % and 3.3 %, respectively.…”

Section: Essential Oil Chemical Compositionsupporting

confidence: 88%

“…Our results of lavandin hydrolat chemical composition are not in accordance with the majority of previously published reports, where linalool was the most abundant compound (42-56 %), followed by cam- phor (13-24 %) and 1,8-cineole (8-24 %), while linalool oxide isomers were detected in smaller amounts (3-6 %) (Baydar and Kineci, 2009;Politi et al, 2020;Yohalem and Passey, 2011). Some other sources reported components such as 1,8-cineole and camphor as the most dominant in lavandin hydrolat (53 and 67 %, respectively) (Garzoli et al, 2020;Jeon et al, 2013). Reports dealing with the chemical composition of true lavender (L. angustifolia) hydrolats also indicate a high content of linalool (26-52 %) (Kaloustian et al, 2008;Prusinowska et al, 2016;Śmigielski et al, 2013).…”

Section: Hydrolat Chemical Compositionmentioning

confidence: 95%

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GC/MS chemical analysis of lavandin (Lavandula x intermedia) hydrolat: Successive extraction fractions

Pljevljakušić

Drinić

2020

Lekovite sirovine

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Hydrolats are valuable co-products of the essential oil distillation process, whose volatile compounds can be quantified by various methods. In this paper, we have tried to estimate the liquid-liquid extraction cycle number threshold for volatile compounds quantification of lavandin (Lavandula x intermedia) hydrolat. For this purpose, ten consecutive hydrolat extractions with n-hexane were analyzed GC/MS with hexadecane (C16) as an internal standard and compared with the lavandin essential oil. The chemical composition of the lavandin hydrolat showed similarity with its essential oil to the great extent, while volatile compounds dissolved in hydrolat exclusively belonged to the class of oxygenated monoterpenes. The total amount of extracted compounds has been estimated to 2174.2 mg/L, where the most dominant compounds in lavandin hydrolat were cisand trans-furanoid linalool oxide (676.3 and 634.1 mg/L, respectively), followed by much smaller amounts of linalool, camphor, and 1,8-cineole (167.6, 157.0, and 148.2 mg/L, respectively). Cumulative recoveries of total compounds yield after the third, fifth, and eighth extractions were 88 %, 96 %, and 99 %, respectively. Combined fraction analysis confirmed that in the first 5 cycles more than 95 % of the total yield (from 10 cycles) of extracted volatile compounds can be collected. Based on the results of this study, for volatile compounds quantification in lavandin hydrolat, 5 cycles of n-hexane liquid-liquid extraction can be recommended.

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Section: Essential Oil Chemical Compositionsupporting

confidence: 88%

Section: Hydrolat Chemical Compositionmentioning

confidence: 95%

GC/MS chemical analysis of lavandin (Lavandula x intermedia) hydrolat: Successive extraction fractions

Pljevljakušić

Drinić

2020

Lekovite sirovine

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“…To describe the volatile fraction of the EOs and HYs vapor phase, a Perkin-Elmer Headspace Turbomatrix 40 (Waltham, MA, USA) autosampler connected to GC-MS was used for the headspace analysis. The operative conditions were performed as previously described [ 72 , 73 , 74 ]. About 1 mL of EO and 2 mL of HY were placed separately in 20 mL vials sealed with headspace PTFE-coated silicone rubber septa and caps.…”

Section: Methodsmentioning

confidence: 99%

Laurus nobilis, Salvia sclarea and Salvia officinalis Essential Oils and Hydrolates: Evaluation of Liquid and Vapor Phase Chemical Composition and Biological Activities

Ovidi

Masci

Zambelli

et al. 2021

Plants

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Laurus nobilis, Salvia officinalis and Salvia sclarea essential oils (EOs) and hydrolates (HYs) were investigated to define their chemical compositions and biological properties. Gas-chromatography/Mass-spectrometry (GC/MS) and Headspace-GC/MS (HS-GC/MS) techniques were used to characterize the liquid and vapor phase chemical composition of EOs and HYs. 1,8-Cineole (42.2%, 33.5%) and α-pinene (16.7%, 39.0%) were the main compounds of L. nobilis EO; 1,8-cineole (30.3%, 48.4%) and camphor (17.1%, 8.7%) were for S. officinalis EO; linalyl acetate (62.6%, 30.1%) and linalool (11.1%, 28.9%) were for S. sclarea EO for the liquid and vapor phase, respectively. Chemical profile of HYs was characterized by 1,8-cineole (65.1%, 61.4%) as a main constituent of L. nobilis and S. officinalis HYs, while linalool (89.5%) was the main constituent of S. sclarea HY. The antioxidant activity of EOs and HYs was carried out by DPPH and ABTS assays and antimicrobial properties were also investigated by microdilution and the disc diffusion method for liquid and vapor phase against five different bacterial strains such as Escherichia coli ATCC 25922, Pseudomonas fluorescens ATCC 13525 and Acinetobacter bohemicus DSM 102855 among Gram-negative and Bacillus cereus ATCC 10876 and Kocuria marina DSM 16420 among Gram-positive. L. nobilis and S. officinalis EOs demonstrated considerable antibacterial activity, while S. sclarea EO proved to be less effective. Agar diffusion method and vapor phase test showed the EOs activity with the biggest halo inhibition diameters against A. bohemicus and B. cereus. A remarkably high antioxidant activity was determined for L. nobilis showing low EC50 values and also for S. sclarea; good EO results were obtained in both of the used assays. S. officinalis EC50 values were slightly higher to which corresponds to a lower antioxidant activity. Concerning the HYs, the EC50 values for L. nobilis, S. officinalis and S. sclarea were remarkably high corresponding to an extremely low antioxidant activity, as also obtained by expressing the values in Trolox equivalent antioxidant capacity (TEAC).

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“…Lastly, hydrolate exhibited promising results in the control of fungal growth on paper artwork, suppressing the four tested strains at concentrations of 25-50% [32]. The plant part [51] or date of harvest [20], processing plant material (fresh or dry) [47], as well as the extraction method [20], or formulations such as nanoemulsion [28], also influence the chemical composition and further antimicrobial properties. Apart from this, it is established that hydrolate exhibited considerable antibacterial activities against the Gram-positive bacteria, while Gram negative bacteria were found to be resistant.…”

Section: Antimicrobial Activitymentioning

confidence: 99%

“…This is most probably due to its outer membrane [43,52]. Furthermore, only L. intermedia hydrolate formulated in nanoemulsion exhibited activity against E. coli (MIC value was 0.75%) and B. cereus (MIC value 0.60%), whereas pure hydrolate was inactive on both bacteria strains [28].…”

Section: Antimicrobial Activitymentioning

confidence: 99%

Hydrolates: By-products of essential oil distillation: Chemical composition, biological activity and potential uses

Aćimović¹,

Tešević²,

Smiljanić³

et al. 2020

Adv Techol

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Hydrolates, also referred to as hydrosols, floral or distillate waters, as well as aromatic waters, are produced in the same isolation process with essential oils by steam distillation. A small amount of essential oil constituents is dissolved in hydrolates providing specific organoleptic properties and flavor, as well as biological activity which makes them useful as raw material in many industries. Their popularity is still on the rise, especially in aromatherapy. The objective in this review is to analyze the chemical compositions of hydrolates and their corresponding essential oils, as well as biological activity of hydrolates (antimicrobial, antioxidant and antiinflamatory) and potential uses, not only in food industry for flavoring, and preservation of fresh-cut fruits and vegetables, but also as functional (soft) drinks. However, hydrolates can be used in aromatherapy and cosmetics, as well as in organic agriculture and aquaculture.

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Lavandula x intermedia essential oil and hydrolate: Evaluation of chemical composition and antibacterial activity before and after formulation in nanoemulsion

Cited by 62 publications

References 39 publications

GC/MS chemical analysis of lavandin (Lavandula x intermedia) hydrolat: Successive extraction fractions

GC/MS chemical analysis of lavandin (Lavandula x intermedia) hydrolat: Successive extraction fractions

Laurus nobilis, Salvia sclarea and Salvia officinalis Essential Oils and Hydrolates: Evaluation of Liquid and Vapor Phase Chemical Composition and Biological Activities

Hydrolates: By-products of essential oil distillation: Chemical composition, biological activity and potential uses

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