Dewatering and Extraction of Hydrophilic Solutes and Essential Oils from Cryo-preserved Lemon Peels Using Liquefied Dimethyl Ether

Ayano NAKAMURA; Yuki HARA; Tomonori KAWANO

doi:10.15261/serdj.24.37

Simultaneous Extraction of Water and Essential Oils from Citrus Leaves and Peels Using Liquefied Dimethyl Ether

Journal of Nutrition & Food Sciences ◽

10.4172/2155-9600.1000301 ◽

2014 ◽

Vol 4 (5) ◽

Cited By ~ 4

Author(s):

Rintaro Hoshino ◽

Wahyudiono

Keyword(s):

Essential Oils ◽

Dimethyl Ether ◽

Simultaneous Extraction ◽

Citrus Leaves

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Development of nano-emulsions based on Ayapana triplinervis essential oil for the control of Aedes aegypti larvae

PLoS ONE ◽

10.1371/journal.pone.0254225 ◽

2021 ◽

Vol 16 (7) ◽

pp. e0254225

Author(s):

Alex Bruno Lobato Rodrigues ◽

Rosany Lopes Martins ◽

Érica de Menezes Rabelo ◽

Rosana Tomazi ◽

Lizandra Lima Santos ◽

...

Keyword(s):

Particle Size ◽

Essential Oil ◽

Zeta Potential ◽

Aedes Aegypti ◽

Essential Oils ◽

Dimethyl Ether ◽

Inflammatory Cells ◽

Polydispersity Index ◽

Oral Toxicity ◽

Nano Emulsion

Ayapana triplinervis is a plant species used in traditional medicine and in mystical-religious rituals by traditional communities in the Amazon. The aim of this study are to develop a nano-emulsion containing essential oil from A. triplinervis morphotypes, to evaluate larvicidal activity against Aedes aegypti and acute oral toxicity in Swiss albino mice (Mus musculus). The essential oils were extracted by steam dragging, identified by gas chromatography coupled to mass spectrometry, and nano-emulsions were prepared using the low energy method. Phytochemical analyses indicated the major compounds, expressed as area percentage, β-Caryophyllene (45.93%) and Thymohydroquinone Dimethyl Ether (32.93%) in morphotype A; and Thymohydroquinone Dimethyl Ether (84.53%) was found in morphotype B. Morphotype A essential oil nano-emulsion showed a particle size of 101.400 ± 0.971 nm (polydispersity index = 0.124 ± 0.009 and zeta potential = -19.300 ± 0.787 mV). Morphotype B essential oil nano-emulsion had a particle size of 104.567 ± 0.416 nm (polydispersity index = 0.168 ± 0.016 and zeta potential = -27.700 ± 1.307 mV). Histomorphological analyses showed the presence of inflammatory cells in the liver of animals treated with morphotype A essential oil nano-emulsion (MAEON) and morphotype B essential oil nano-emulsion (MBEON). Congestion and the presence of transudate with leukocyte infiltration in the lung of animals treated with MAEON were observed. The nano-emulsions containing essential oils of A. triplinervis morphotypes showed an effective nanobiotechnological product in the chemical control of A. aegypti larvae with minimal toxicological action for non-target mammals.

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SPME-GC/MS identification of aroma compounds in rose flowers

Acta Agronomica Hungarica ◽

10.1556/aagr.58.2010.3.11 ◽

2010 ◽

Vol 58 (3) ◽

pp. 283-287 ◽

Cited By ~ 4

Author(s):

É. Héthelyi ◽

S. Szarka ◽

É. Lemberkovics ◽

É. Szőke

Keyword(s):

Chemical Analysis ◽

Essential Oils ◽

Volatile Compounds ◽

Dimethyl Ether ◽

Ethyl Alcohol ◽

Solid Phase ◽

Early Summer ◽

Medicinal And Aromatic Plants ◽

Phenyl Ethyl Alcohol ◽

Aromatic Components

The content and composition of active ingredients and essential oils in medicinal and aromatic plants have been studied for several decades. The volatile compounds in essential oils have been analysed routinely using gas chromatography (GC) since 1966, and with GC coupled to mass spectrometric detection (GC/MS) since 1978.The 13 rose varieties selected for chemical analysis varied for colour, shape and fragrance. The static headspace solid phase microextraction (sHS-SPME) technique recently developed for sample preparation and sample enrichment was used to study the volatile aromatic components.The main volatile compound of a sweet-smelling purple rose was found to be phenyl ethyl alcohol (33–52%). The phenyl ethyl alcohol content of fragrant rose flowers with blackish-purple petals increased continuously from early summer to late autumn (from 17 to 70 %). The dominant aromatic components of the yellow, orange and pink rose flowers were hexanol, hexenyl acetate and benzyl alcohol. Phenyl ethyl alcohol and orcinol dimethyl ether were the main constituents of the fragrant pink and white rose varieties. Methyl vinyl anisol and orcinol dimethyl ether were dominant in rose flowers with beige petals. In summary, it can be concluded that the SPME-GC/MS method is suitable for the characterization of rose varieties and for the chemical analysis of aromatic volatile compounds.

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Development of nano-emulsions based on Ayapana triplinervis for the control of Aedes aegypti larvae

10.1101/2020.07.09.194985 ◽

2020 ◽

Author(s):

Alex Bruno Lobato Rodrigues ◽

Rosany Martins Lopes ◽

Érica Menezes Rabelo ◽

Rosana Tomazi ◽

Lizandra Lima Santos ◽

...

Keyword(s):

Particle Size ◽

Essential Oil ◽

Essential Oils ◽

Dimethyl Ether ◽

Inflammatory Cells ◽

World Health ◽

Oral Toxicity ◽

Religious Rituals ◽

Health Organization ◽

Nano Emulsion

AbstractAyapana triplinervis is a plant species used in traditional medicine and in mystical-religious rituals by traditional communities in the Amazon. The aim of this study is to evaluate the larvicidal activity against A. aegypti of nano-emulsions containing essential oils from A. triplinervis morphotypes, and acute oral toxicity in non-target organism. Essential oils were identified and nano-emulsions were prepared using the low energy method. The mortality test of A. aegypti larvae was performed according to the protocol recommended by the World Health Organization, and toxicity in non-target mammals was performed according to the OECD. Phytochemical analyses indicated the major compounds (E)-Caryophyllene (45.93%) and Thymohydroquinone Dimethyl Ether (32.93%) in morphotype A, and in morphotype B, Thymohydroquinone Dimethyl Ether (84.53%) was found. Morphotype A essential oil nano-emulsion showed a particle size of 101.400 ± 0.971 nm (PdI = 0.124 ± 0.009 and ZP = −19,300 ± 0.787 mV). Morphotype B essential oil nano-emulsion had a particle size of 104.567 ± 0.416 nm (PdI = 0.168 ± 0.016 and ZP = −27,700 ± 1,307 mV). Histomorphological analyses showed the presence of inflammatory cells in the liver of animals treated with morphotype A essential oil nano-emulsion (MAEON) and morphotype B essential oil nano-emulsion (MBEON). Congestion and the presence of transudate with leukocyte infiltration in the lung of animals treated with MAEON were observed. The nano-emulsions containing essential oils of A. triplinervis morphotypes showed an effective nanobiotechnological product in the chemical control of A. aegypti larvae and safe for non-target mammals.

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