scholarly journals Modeling and optimization of extraction process of eucalyptus essential oil (Eucalyptus globulus)

2010 ◽  
pp. 147-154 ◽  
Author(s):  
Jeancarlos Moreno ◽  
Gabriel López ◽  
Raúl Siche
Keyword(s):  
Essential Oil ◽  
Eucalyptus Globulus ◽  
Extraction Process ◽  
Modeling And Optimization ◽  
Eucalyptus Essential Oil

scholarly journals EFEITO DO ÓLEO ESSENCIAL DE EUCALIPTO SOBRE PENICILLIUM DIGITATUM Effect of eucalyptus essential oil on Penicillium digitatum

2013 ◽  
Vol 11 ◽  
pp. 19
Author(s):  
Andréia Piati ◽  
Márcia De Holanda Nozaki ◽  
Cristina Fernanda Schneider
Keyword(s):  
Essential Oil ◽  
Eucalyptus Globulus ◽  
Penicillium Digitatum ◽  
Penicillium Sp ◽  
Eucalyptus Essential Oil

Penicillium sp. é o agente causal dos bolores, considerado como a principal doença pós-colheita em citros,levando a perdas na qualidade e quantidade dos frutos comercializáveis. O presente trabalho teve por objetivoverificar a ação fungitóxica do óleo essencial de Eucalyptus globulus no controle, in vitro, de Penicilliumdigitatum. O delineamento experimental utilizado foi inteiramente casualizado, com oito tratamentos e cincorepetições, sendo: uso do óleo essencial de eucalipto nas concentrações de 1; 0,5; 0,25; 0,1; 0,05 e 0,025%adicionados ao meio de cultura BDA (batata-dextrose-ágar), testemunha negativa (meio BDA com adição de40 mg i.a./L do fungicida azoxystrobin) e testemunha positiva (apenas BDA). O óleo essencial de eucaliptoinibiu o crescimento de forma significativa nas concentrações de 1, 0,5 e 0,25%, não diferindo estatisticamentedo controle com o fungicida azoxystrobin. Os tratamentos apresentaram o mesmo comportamentoem relação à produção de esporos. Já na germinação de esporos, as concentrações de 1 e 0,5% obtiveraminibição superior ao tratamento com azoxystrobin. Os resultados com as demais concentrações de óleo igualaram-se estatisticamente aos da testemunha positiva (BDA).

scholarly journals Eucalyptus globulus essential oil on the postharvest quality of ‘Carola’ roses

2020 ◽  
Vol 26 (2) ◽  
pp. 159-165
Author(s):  
Elka Fabiana Aparecida Almeida ◽  
Leandra Oliveira Santos ◽  
Ariane Castricini ◽  
João Batista Ribeiro da Silva Reis
Keyword(s):  
Essential Oil ◽  
Eucalyptus Globulus ◽  
Experimental Period ◽  
Fresh Mass ◽  
Postharvest Quality ◽  
Vase Life ◽  
Anthocyanin Content ◽  
Total Anthocyanin ◽  
Eucalyptus Essential Oil

Abstract The consumer market has been demanding quality plant products, without any contamination or chemical residues, restricting their use in postharvest. As a result, is necessary increase the development of research seeking more sustainable and economic alternatives. The objective was to identify the ideal concentration of eucalyptus essential oil to maintain postharvest quality of ‘Carola’ roses. At laboratory, stems of the ‘Carola’ roses were standardized at 35 cm, labeled and subjected to the following doses of eucalyptus (Eucalyptus globulus) essential oil: 0.25%; 0.5%; 0.75%; 1.0% and 1.25%. Spraying with distilled water was used as a control. The experiment was conducted in a completely randomized design, in a factorial scheme consisting of two factors: six postharvest treatments and seven evaluation dates (0, 1, 2, 3, 4, 5, 6 and 7 days). Four replications were used, with two flowers each. Stems fresh mass and color of the petals were analyzed daily. In addition, the visual quality was also evaluated. The total anthocyanin content in the petals was evaluated every three days at the beginning, middle and end of the experimental period. Eucalyptus essential oil in all doses tested provided better maintenance on the postharvest quality of roses: 0.25% and 0.5% (better grades), 1.0% and 1.25% (lower hue angle) and 0.25% (higher anthocyanin content). On the 5th day, the flower stems lost 16% of fresh mass, without signs of wilting and the assigned scores also indicated that the stems remained fit for commercialization until the fifth day (total vase life). In conclusion, eucalyptus essential oil at doses 0.25%, 0.50%, 1.0% and 1.25% is effective in maintaining the quality of ‘Carola’ roses for up to five days at 25 °C.

Safety Evaluation of Eucalyptus globulus Essential Oils through Acute and Sub-acute Toxicity and Skin Irritation in Mice and Rats

2020 ◽  
Vol 14 (3) ◽  
pp. 187-195
Author(s):  
Berhan Mengiste ◽  
Tizazu Zenebe ◽  
Kassahun Dires ◽  
Ermias Lulekal ◽  
Awol Mekonnen ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Essential Oil ◽  
Eucalyptus Globulus ◽  
Biochemical Parameters ◽  
Skin Irritation ◽  
Toxicity Study ◽  
Subacute Toxicity ◽  
Acute Toxicity Study ◽  
Limit Test ◽  
Ointment Formulation

Background: The Eucalyptus globulus extractions have been used by the traditional healers to treat diseases in the study area. Our previous study revealed that the essential oil has antimicrobial and antifungal activity. This study determined phytochemical analysis, skin irritation, acute and subacute toxicity of Eucalyptus globulus essential oil in mice and rats. Methods: The phytochemicals were analyzed using GC-MS mass spectrometry. The acute toxicity study was determined at three dose levels of 1500 mg/kg, 1750mg/kg, and 2000 mg/kg. The essential oil limit test at a dose of 1000 mg/kg was administered to mice for 28 consecutive days for sub-acute toxicity study. The mice mortality, behavioral change, injury and other signs of illness were recorded once daily. Biochemical parameters were evaluated. Liver and kidney were analyzed for histopathological analyses. The 5% ointment formulation was applied to the rat skin to determine skin irritation effects. Results: The Eucalyptus globulus essential oil showed no effect on the mice at a dose of 1500mg/kg and below, but caused signs of toxicity and death at a dose of 1750mg/kg and above compared to the controls (p<0.05). The LD50 value was 1650 mg/kg. There was no significant difference (p > 0.05) in the body weights, gross abnormalities of the organs and biochemical parameters compared to the control at 1000 mg/kg subacute toxicity study. No histopathological changes were detected in the organs tested. The 5% ointment formulation did not show any abnormal skin reaction. Discussion: In the present study, the Eucalyptus globulus essential oil was comparable with other studies in terms of both chemical composition and its effects on sub-acute and topical application. Conclusion: This toxicity study demonstrated that Eucalyptus globulus essential oil is nontoxic at a relatively lower concentration.

Modeling and optimization of ultrasound‐assisted cinnamon extraction process using fuzzy and response surface models

2018 ◽  
Vol 42 (2) ◽  
pp. e12978
Author(s):  
Nur Cebi ◽  
Osman Sagdic ◽  
Abdulrahman Mohammed Basahel ◽  
Mohammed Abdullah Balubaid ◽  
Osman Taylan ◽  
...  
Keyword(s):  
Response Surface ◽  
Extraction Process ◽  
Modeling And Optimization ◽  
Response Surface Models ◽  
Surface Models ◽  
Ultrasound Assisted

scholarly journals Composition of essential oil and allelopathic activity of aromatic water of Aster lanceolatus Willd: (Asteraceae)

2009 ◽  
Vol 45 (3) ◽  
pp. 469-474 ◽  
Author(s):  
Josiane de Fátima Gaspari Dias ◽  
Obdúlio Gomes Miguel ◽  
Marilis Dallarmi Miguel
Keyword(s):  
Essential Oil ◽  
Lactuca Sativa ◽  
Extraction Process ◽  
Caryophyllene Oxide ◽  
Allelopathic Activity ◽  
Germination And Growth

The essential oil obtained from flowers of Aster lanceolatus was submitted the CG-MS and presented as result thirteen substances with largest concentration; among them, the caryophyllene oxide with the larger one. The aromatic water obtained during the extraction process of this essential oil was forwarded to allelopathic test, and demonstrated to be capable to inhibit the germination and growth of Lactuca sativa.

scholarly journals Adaptogenic activity of Cinnamomum camphora, Eucalyptus globulus, Lavandula stœchas and Rosmarinus officinalis essential oil used in North-African folk medicine

2021 ◽  
Vol 67 (2) ◽  
pp. 83-88
Author(s):  
Mahieddine Boumendjel ◽  
Abdennour Boucheker ◽  
Sandra Feknous ◽  
Faiza Taibi ◽  
Naouel Rekioua ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Emotional Disorders ◽  
Eucalyptus Globulus ◽  
Elevated Plus Maze ◽  
Rosmarinus Officinalis ◽  
Cinnamomum Camphora ◽  
Lavandula Stoechas ◽  
Plus Maze ◽  
Adaptogenic Activity

Depressive anxiety is one of the most emotional disorders in our industrial societies. Many treatments of phobias exist and are based on plant extracts therapies, which play an important role in the amelioration of the behavior. Our study aimed to evaluate the adaptogenic activity of different essential oils provided from local plants: Cinnamomum camphora (Camphora), Eucalyptus globulus (Blue gum), Lavandula stœchas (Topped lavender) and Rosmarinus officinalis (Rosemary) on Wistar rats. The adaptogenic activity was evaluated on the elevated plus-maze. The efficacy of the extract (200 mL/kg) was compared with the standard anxiolytic drug Diazepam® 1 mg. Animals administered by the essential oil of Lavandula stœchas, Cinnamomum camphora, Rosmarinus officinalis and Eucalyptus globulus showed a behavior similar to those treated with Diazepam®. For groups treated with the following essential oils: Rosmarinus officinalis, Lavandula stoechas and Cinnamomum camphora at a dose of 200 mL/kg, we notice an increase in the time spent on the open arms of the elevated plus-maze and a decrease in time spent on the closed arms of the elevated plus-maze, especially for Rosmarinus officinalis, which explains the anxiolytic effect of these plants. We also notice a decrease in the number of entries in closed arms, open arms and the number of passing to the central square. The increase in the number of entries to open arms with Eucalyptus globulus essential oil shows a reduction in anxiety behavior in rodents and this shows that these plants have an inhibitory effect.

scholarly journals Central Composite Design, Kinetic Model, Thermodynamics, and Chemical Composition of Pomelo (Citrus Maxima (Burm.) Merr.) Essential Oil Extraction by Steam Distillation

Processes ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 2075
Author(s):  
Tan Phat Dao ◽  
Thanh Viet Nguyen ◽  
Thi Yen Nhi Tran ◽  
Xuan Tien Le ◽  
Ton Nu Thuy An ◽  
...  
Keyword(s):  
Activation Energy ◽  
Kinetic Model ◽  
Essential Oil ◽  
Rate Constant ◽  
Flow Rate ◽  
Steam Distillation ◽  
Extraction Process ◽  
Oil Extraction ◽  
Extraction Time ◽  
Pomelo Peel

Pomelo peel-derived essential oils have been gaining popularity due to greater demand for stress relief therapy or hair care therapy. In this study, we first performed optimization of parameters in the pomelo essential oil extraction process on a pilot scale to gain better insights for application in larger scale production. Then extraction kinetics, activation energy, thermodynamics, and essential oil quality during the extraction process were investigated during the steam distillation process. Three experimental conditions including material mass, steam flow rate, and extraction time were taken into consideration in response surface methodology (RSM) optimization. The optimal conditions were found as follows: sample weight of 422 g for one distillation batch, steam flow rate of 2.16 mL/min and extraction time of 106 min with the coefficient of determination R2 of 0.9812. The nonlinear kinetics demonstrated the compatibility of the kinetic model with simultaneous washing and unhindered diffusion with a washing rate constant of 0.1515 min−1 and a diffusion rate constant of 0.0236 min−1. The activation energy of the washing and diffusion process was 167.43 kJ.mol−1 and 96.25 kJ.mol−1, respectively. The thermodynamic value obtained at the ΔG° value was −35.02 kJ.mol−1. The quality of pomelo peel essential oil obtained by steam distillation was characterized by its high limonene content (96.996%), determined by GC-MS.

scholarly journals Physiological effects of ingesting eucalyptus essential oil with milk casein peptide

Silva Fennica ◽  
2009 ◽  
Vol 43 (1) ◽  
Author(s):  
Bum-Jin Park ◽  
Takeshi Morikawa ◽  
Tomohiro Ogata ◽  
Kenji Washida ◽  
Mario Iwamoto ◽  
...  
Keyword(s):  
Essential Oil ◽  
Physiological Effects ◽  
Milk Casein ◽  
Eucalyptus Essential Oil

Optimization of Extraction Conditions of Essential Oil from Latifolia miq Roots and Stems with Supercritical CO2 Fluid

2013 ◽  
Vol 726-731 ◽  
pp. 4512-4516
Author(s):  
Ren Yong Gu ◽  
Zhi Ping Li
Keyword(s):  
Essential Oil ◽  
Optimum Condition ◽  
Raw Materials ◽  
Extraction Process ◽  
Orthogonal Test ◽  
Single Factor ◽  
Extraction Condition ◽  
Optimum Extraction ◽  
Optimum Extraction Condition

Studying on the extraction process of essential oil from Latifolia Miq roots and stems by Supercritical CO2 extraction. The effects on extracting ratio were investigated by using single factor test, adding content of grinding fineness of raw materials,extracting temperature, extracting pressure and extracting time. The optimum extraction condition was determined by orthogonal test. The results showed that the optimum condition of the extraction was as follows: grinding fineness 90 mesh, extracting temperature 45 °C, extracting pressure 20 MPa and extracting time 2.5 h.

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