Bioproducts from forest biomass: Essential oils and hydrolates from wastes of Cupressus lusitanica Mill. and Cistus ladanifer L.

Tavares, Cláudia S.; Martins, Alice; Faleiro, Maria Leonor; Miguel, Maria Graça; Duarte, Luís C.; Gameiro, José A.; Roseiro, Luísa B.; Figueiredo, A. Cristina

doi:10.1016/j.indcrop.2019.112034

Cited by 38 publications

(49 citation statements)

References 39 publications

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“…Among other abundant compounds (camphene, bornyl acetate and trans-pinocarveol), α-pinene was identified as the major compound of rockrose EO (39.25%). Several studies have addressed the volatile composition of C. ladanifer , with α-pinene being the compound that always presented the highest concentration (i.e., from 30 to 50%) [ 15 ]. Furthermore, the composition of this EO is complex, containing more than 90 compounds, including some in trace amounts, as other authors have reported [ 30 ].…”

Section: Resultsmentioning

confidence: 99%

“…Considering the obtained results, it is possible to suggest the potential substitution of BHT with rockrose EO in the food industry. The antioxidant activity of essential oils is of great interest, as they can be used in food to preserve it from oxidation processes, thus prolonging shelf-life without losing nutritional quality attributes [ 15 ].…”

Section: Resultsmentioning

confidence: 99%

“…The antimicrobial effects of these volatile mixtures of compounds results from their ability to increase permeability, leading to the loss of cellular constituents of microorganisms [ 13 ]. Cistus ladanifer (“esteva”), also known as rockrose, is a perennial Mediterranean shrub widely distributed in the Iberian Peninsula [ 14 , 15 ], and the main species producing labdane, a resin employed as a natural fixative and as a fragrance for composing amber and leathery notes [ 16 ]. Other odoriferous materials may be obtained from fresh leaves and branches, namely, rockrose essential oil (EO) by steam distillation, cistus concrete by nonpolar solvent extraction, and absolute by taking up concrete [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

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Pullulan Films Containing Rockrose Essential Oil for Potential Food Packaging Applications

2020

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Active packaging is designed to control the development of decay- and disease-causing microorganisms and is emerging as a promising technology for extending shelf-life, maintaining food safety, reducing waste, and minimizing the risks for foodborne diseases. The goal of this work was to develop and characterize bioactive pullulan-based films, containing rockrose (Cistus ladanifer) essential oil. Among other abundant compounds (camphene, bornyl acetate and trans-pinocarveol), α-pinene was identified as the major compound of rockrose essential oil (39.25%). The essential oil presented stronger antibacterial activity against Gram-positive than against Gram-negative bacteria. The antioxidant results indicate the potential of the developed films to be used to package foods susceptible to oxidation and rancification, thus improving their shelf-life. Also, this study reflects the potential of rockrose essential oil, free or incorporated in pullulan, as a promising quorum sensing inhibitor, since it was able to interrupt intercellular communication, inhibiting violacein production. Electronic microscopy images showed the antibiofilm activity of the films with rockrose essential oil that were able to influence bacterial adhesion, which may be explained by the differences in the surface free energy of the films, as also determined.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Pullulan Films Containing Rockrose Essential Oil for Potential Food Packaging Applications

2020

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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%

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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“…There are data regarding the antimicrobial properties of β-pinene, used either as a purified chemical or as a constituent of essential oils [12,13]. Some studies have also demonstrated that β-pinene and trans-pinocarveol, contained in the oils, show various biological effects [14][15][16][17][18]. Some microbial isolates have been found capable of transforming β-pinene into α-terpineol [19].…”

Section: Introductionmentioning

confidence: 99%

Mutagenesis and Adaptation of the Psychrotrophic Fungus Chrysosporium pannorum A-1 as a Method for Improving β-pinene Bioconversion

et al. 2020

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Mutagenesis and adaptation of the psychrotrophic fungus Chrysosporium pannorum A-1 to the toxic substrate β-pinene were used to obtain a biocatalyst with increased resistance to this terpene and improved bioconversion properties. Mutants of the parental strain were induced with UV light and N-methyl-N′-nitro-N-nitrosoguanidine. Mutants resistant to β-pinene were isolated using agar plates with a linear gradient of substrate concentrations. Active mutants were selected based on their general metabolic activity (GMA) expressed as oxygen consumption rate. Compared to the parental strain, the most active mutant showed an enhanced biotransformation ability to convert β-pinene to trans-pinocarveol (315 mg per g of dry mycelium), a 4.3-fold greater biocatalytic activity, and a higher resistance to H2O2-induced oxidative stress. Biotransformation using adapted mutants yielded twice as much trans-pinocarveol as the reaction catalyzed by non-adapted mutants. The results indicate that mutagenesis and adaptation of C. pannorum A-1 is an effective method of enhancing β-bioconversion of terpenes.

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Bioproducts from forest biomass: Essential oils and hydrolates from wastes of Cupressus lusitanica Mill. and Cistus ladanifer L.

Cited by 38 publications

References 39 publications

Pullulan Films Containing Rockrose Essential Oil for Potential Food Packaging Applications

Pullulan Films Containing Rockrose Essential Oil for Potential Food Packaging Applications

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

Mutagenesis and Adaptation of the Psychrotrophic Fungus Chrysosporium pannorum A-1 as a Method for Improving β-pinene Bioconversion

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