scholarly journals Cultivation of Mint (Mentha x gracilis) in Intercropping with Fruit Trees in an Agroforestry System: Production and Quality of Essential Oil

2019 ◽  
pp. 1-9 ◽  
Author(s):  
Dalva Paulus ◽  
Dislaine Becker ◽  
Gilmar Antônio Nava ◽  
Daiane Luckmann ◽  
Claúdia de Andrade Moura
Keyword(s):  
Chemical Composition ◽  
Medicinal Plants ◽  
Light Intensity ◽  
Essential Oil ◽  
Essential Oils ◽  
Oil Content ◽  
Biomass Accumulation ◽  
Agroforestry System ◽  
Climatic Conditions ◽  
Fruit Species

Aims: The cultivation of medicinal plants in intercropping with other species of agricultural use has been an alternative to make production sustainable in family farming. The objective of this work was to evaluate the growth, biomass production, and chemical composition of the essential oil of mint (Mentha x gracilis Sole) in intercropping with fruit species in an agroforestry system. Study Design:  The experimental design was randomized blocks with four treatments, mint interplanted with citrus (Citrus sinensis L. Osbeck), bananas (Musa spp.), blackberries (Morus nigra), or Barbados cherries (Malpighia glabra). Place and Duration of Study: The experiment was conducted in the agroforestry located in the sector of Olericultura of the Federal University of Technology – Paraná (UTFPR), Brazil, in the period between November 2015 to February 2017. Methodology: We analyzed light intensity, relative chlorophyll index, height, leaf area, biomass accumulation, essential oil content, oil production and chemical composition of mint grown in agroforestry. Results: The highest production of biomass and essential oil were obtained in the intercropping of mint with citrus and Barbados cherries, possibly due to the edaphic climatic conditions, such as greater light intensity, that favored the growth, production, and chemical composition of the mint essential oil. Bananas and blackberries intercropped with mint were not beneficial for the growth and production of essential oils. Conclusion: The intercropping of mint with citrus and Barbados cherries resulted in higher growth, biomass accumulation, and essential oil content and production. The major components of the essential oils were linalool and carvone, with higher percentages in the intercropping of mint with citrus and Barbados cherries. The cultivation of mint by intercropping with fruit species such as citrus and Barbados cherries is an option to diversify the production of medicinal plants, making it sustainable.

scholarly journals Chemical composition of essential oil extracted from leaves of Campomanesia adamantium subjected to different hydrodistillation times

2017 ◽  
Vol 47 (1) ◽  
Author(s):  
Juliana Dantas de Oliveira ◽  
Daniely Karen Matias Alves ◽  
Mayker Lazaro Dantas Miranda ◽  
José Milton Alves ◽  
Marcelo Nogueira Xavier ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Oil Content ◽  
Chemical Constituents ◽  
Caryophyllene Oxide ◽  
Fruit Species ◽  
Randomized Design ◽  
Completely Randomized Design

ABSTRACT: Campomanesia adamantium is a native fruit species of the Cerrado and is used in food and medicines and as bee pasture. The chemical composition of essential oils obtained from plants of the same species have varying constituent proportions due to the influence of extractive factors, environmental, genetic and ontogenetic. This study aimed to identify the influence of hydrodistillation time on the content and chemical composition of essential oil extracted from the leaves of C. adamantium . Treatments consisted of five extraction times (1, 2, 3, 4, and 5h) using Clevenger with five replications in a completely randomized design. It was observed that after two hours of hydrodistillation, the essential oil content remains constant. Regarding the chemical constituents of essential oil, variation of the proportions of the compounds tested occurred at all hydrodistillation times. The compounds spathulenol oxygenated sesquiterpenes and caryophyllene oxide were the majority in the five hydrodistillation times.

scholarly journals Chemical composition, antimicrobial activity and biological properties of essential oils

2015 ◽  
Vol 9 (2) ◽  
pp. 9-13 ◽  
Author(s):  
Amir Hossein Saeidnejad ◽  
Peyman Rajaei
Keyword(s):  
Chemical Composition ◽  
Medicinal Plants ◽  
Essential Oil ◽  
Essential Oils ◽  
Antimicrobial Properties ◽  
Biological Properties ◽  
Antioxidant Agents ◽  
Ancient Times ◽  
High Concentrations ◽  
Oil Repellent

Essential oils constitute a heterogeneous collection of chemical compounds. Their main characteristics are that they all synthesized by plants and are volatile and mostly soluble in ethanol. They have traditionally been obtained from plants and they have been widely used for insecticidal, medicinal and cosmetic purposes. Essential oils contains about 20–60 components at quite different concentrations and they are characterized by two or three major components at fairly high concentrations. Lately, the essential oils and various extracts of plants have gained special interest as sources of natural antimicrobial and antioxidant agents because of the resistance to antibiotics that some microorganisms have acquired and the possible toxicities of the synthetic antioxidants. Spices consumed daily in different types of food to improve flavors, since ancient times, are well known for their antioxidant and antimicrobial properties. During recent decades, numerous numbers of plants have been monitored for their possible role as repellents and insecticides. In this review, the chemical composition profile of some important medicinal plants was evaluated, then antimicrobial properties of a number of essential oils was compared. Antioxidant activity of some essential oils was also considered. Finally, essential oil repellent properties an an important characteristics was evaluated. Further investigation for available data related to the other biological properties of medicinal plants essential oil is recommended.DOI: http://dx.doi.org/10.3126/ijls.v9i2.12043 International Journal of Life Sciences 9 (2) : 2015; 9-13

scholarly journals Comparison of the Chemical Composition of Valeriana parviflora Essential Oils Collected in the Venezuelan Andes in two Different Seasons

2015 ◽  
Vol 10 (4) ◽  
pp. 1934578X1501000
Author(s):  
Sammy Fernández ◽  
María Rondón ◽  
Janne Rojas ◽  
Antonio Morales ◽  
Luis Rojas-Fermin
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Endemic Species ◽  
Rainy Season ◽  
Climatic Conditions ◽  
Isovaleric Acid ◽  
Aerial Parts ◽  
Different Seasons ◽  
Main Components

The essential oils obtained by hydrodistillation of the aerial parts of Valeriana parviflora (Trevir) BM Vadillo, an endemic species of the Venezuelan Andes, collected from the same location in two different seasons (dry and rainy) of the year, were analyzed by GC/MS. The essential oil obtained during the dry season showed linalool (11.9%), eugenol (8.9%), p-menth-1-en-9-al (8.7%) and α-terpineol (7.7%) as main components, while the oil obtained from the rainy season collection showed o-xylol (16.2%), 3-methyl isovaleric acid (10.6%) and geranial (9.5%) as major compounds. Some of the differences in the composition of these oils might be due to the climatic conditions at the time of harvesting.

scholarly journals Volatile Oil Composition of Some Commercial Medicinal Plants Sold in Konya, Turkey

2019 ◽  
pp. 1-5
Author(s):  
Eray Tulukcu
Keyword(s):  
Medicinal Plants ◽  
Essential Oil ◽  
Essential Oils ◽  
Oil Content ◽  
Local Community ◽  
Volatile Oil ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Thyme Essential Oil ◽  
The Difference

This study was conducted to determine the essential oil composition of some medicinal plants from herbalists that local community have interest in; The research was carried out in the Medicinal Plants Laboratory of  Konya, in 2014 – 2015. The medicinal plants used in the research were supplied by herbalists and wholesalers who supply medicinal plants in Konya. At the end of this study, essential oil composition of medicinal plants ranged from 0.71 % (Daphne) to 5% (Thyme). The lavender essential oil composition ranged between 2% and 5%, while the composition of thyme essential oil ranged between 1% and 5%. There are several reasons for the change observed in the essential oil content of medicinal plants. In general, the effect of difference in the proportion of essential oils of the medicinal plants used in the study was as a result of the difference in regions, domestically and abroad where these plants were collected.

scholarly journals Essential Oil Content and Chemical Composition in 14 Selected Species From a Stretch of Restinga in Southern Brazil

2021 ◽  
Vol 13 (11) ◽  
pp. 23
Author(s):  
Teomar Duarte da Silva ◽  
Michele Trombin de Souza ◽  
Mireli Trombin de Souza ◽  
Roger Raupp Cipriano ◽  
Humberto Ribeiro Bizzo ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Oil Content ◽  
Chemical Constituents ◽  
Caryophyllene Oxide ◽  
Southern Brazil ◽  
The Common ◽  
Cortaderia Selloana ◽  
Herb Species

The restinga is an Atlantic Forest ecosystem characterized by tree, shrub, and herb species that are rich sources of essential oils. In this study, we aim to quantify the essential oil content and determine the chemical constituents of fresh leaves of 14 plant species in a restinga stretch in southern Brazil. Essential oils were obtained by hydrodistillation in a Clevenger-type apparatus and analyzed by gas chromatography coupled to mass spectrometry. Campomanesia reitziana, Cortaderia selloana, and Sophora tomentosa had no essential oils. Total essential oil content ranged from 0.01% (Mikania involucrata) to 1.56% (Varronia curassavica). In total, 60 chemical constituents were identified, representing between 46.2% and 96.5% of the chemical composition of the essential oils. Limonene was the common constituent in all species in which the essential oils were present. The major constituents were ar-curcumene (15.1%) and cis-chrysanthenol (14.2%) in Ambrosia elatior; benzyl benzoate (43.5%) and benzyl salicylate (23.7%) in Aniba firmula; caryophyllene oxide (35.7%) and spathulenol (10.6%) in Austroeupatorium inulaefolium; spathulenol (19.8%) and caryophyllene oxide (14.0%) in Baccharis spicata; caryophyllene oxide (16.3%) in Eugenia astringens; curzerene (30.0%), limonene (13.0%), and germacrone (11.9%) in Eugenia uniflora; caryophyllene oxide (17.1%) and ledol (11.3%) in Lantana camara; caryophyllene oxide (27.7%) and limonene (12.7%) in M. involucrata; 1,8-cineole (19.8%) in Psidium cattleianum; limonene (10.2%) in Schinus terebinthifolius, and allo-aromadendrene (15.2%) in V. curassavica. We expect that our results can assist in selecting species of potential interest for herbal, phytotherapeutic, and cosmetic products.

scholarly journals Essential oil content and composition of lavender origins, introduced in Bulgaria

2021 ◽  
Vol 13 (31) ◽  
pp. 23-25
Author(s):  
Ana Dobreva ◽  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Oil Content ◽  
Linalyl Acetate ◽  
High Quality ◽  
Selection Program ◽  
Three Samples ◽  
The Common ◽  
Qualitative Characteristics

The genus Lavandula includes a variety of species under the common name lavender. Bulgaria has a tradition in the production of high-quality lavender oil. This is the result of many years of selection work, which includes the study of introduced samples and their adaptogenic abilities in the country habitat. Three samples of Lavandula angustifolia Mill., that originated from Poland were studied and compared with the Bulgarian varieties “Hemus” and “Sevtopolis”. The content of the essential oils ranged from 0.39% to 3.98%. The chemical composition, determined by GC/MS, revealed the main compounds: linalyl acetate (13.0÷44.9 %), linalool (21.8÷42.1%), β-caryophyllene (4.6÷7.4 %), cis-β ocimene (2.8÷10.5 %), lavandulyl acetate (1.9÷4.3%), terpinen-4-ol (0.3÷2.0 %), limonene+1.8 cineole (2.3÷6.0 %) and trans-β ocimene (0.1÷3.8%). The sample with the dark purple florescence showed promising quantitative and qualitative characteristics of the essential oil and can be involved in the selection program for lavender cultivation.

scholarly journals The growth, flowering and chemical composition of leaves of three ecotypes of Allium ursinum L.

2012 ◽  
Vol 64 (4) ◽  
pp. 171-180 ◽  
Author(s):  
Marzena Błażewicz-Woźniak ◽  
Anna Michowska
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Oil Content ◽  
Botanical Garden ◽  
Dry Mass ◽  
Growth Characteristics ◽  
Mountain Range ◽  
Allium Ursinum ◽  
The Subject

The experiment was conducted in the Botanical Garden of UMCS in Lublin. A collection of three ecotypes of <i>Allium ursinum</i> L. from Dukla, Roztocze Region and Bieszczady mountain range, were the subject of our study. The aim of the study was to compare the biometrical features and chemical composition of garlic leaves. There were substantial differences both in growth characteristics and flowering characteristics of the ecotypes of <i>Allium ursinum</i>. The Dukla ecotype formed the longest leaves, whereas the shortest ones were found in the Roztocze ecotype. The Bieszczady ecotype was characterized by the widest leaf blades, the longest leaf stalk and flowering stems as well as the largest diameter of inflorescence. The Roztocze ecotype had the largest number of flowers in an inflorescence, while the Dukla ecotype had the shortest flowering stems and the fewest flowers in an inflorescence. The largest concentration of dry mass in leaves was detected in <i>A. ursinum</i> from Roztocze. The largest concentration of proteins was detected in the leaves of <i>A. ursinum</i> from Bieszczady. The most flavonoids were assayed in the leaves of the Roztocze ecotype of <i>A. ursinum</i>, the fewest in the Dukla one. Phenolic acids were at their highest concentration in the leaves of bear's garlic from Dukla, while the lowest concentration was recorded in the leaves of the ecotype from Bieszczady. The garlic leaves from Dukla had also the highest content of essential oil, while the Roztocze ones had the lowest oil content. The ecotypes of <i>Allium ursinum</i> differed substantially when it comes to the number of components of their essential oils and the amount of selected components.

Effect of light intensity on chemical composition and essential oil content in Piper aduncum L. leaves and roots

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
MI Ferreira ◽  
GG Gonçalves ◽  
AB Ferreira ◽  
L Haber ◽  
MOM Marques ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Light Intensity ◽  
Essential Oil ◽  
Oil Content ◽  
Leaves And Roots ◽  
Piper Aduncum ◽  
Effect Of Light

scholarly journals Effect of natural and artificial drying of leaf biomassof Psidium guajava on the content and chemical composition of essential oil

2016 ◽  
Vol 37 (5) ◽  
pp. 3059 ◽  
Author(s):  
Elizabeth Aparecida Josefi da Silva ◽  
Vanessa Paula da Silva ◽  
Cassia Cristina Fernandes Alves ◽  
José Milton Alves ◽  
Edson Luiz Souchie ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oil ◽  
South America ◽  
Essential Oils ◽  
Mass Spectrometer ◽  
Oil Content ◽  
Psidium Guajava ◽  
Drying Method ◽  
Guava Leaves

Psidium guajava L. is native to Central and South America. It is widely distributed and well adapted to Brazil, a producer of essential oils rich in terpenes. The objective of this study was to evaluate the effects of natural and artificial drying on the content and chemical composition of the essential oil of guava leaves (Psidium guajava L.) grown in Rio Verde (GO). The two treatments consisted of drying fresh leaves either naturally in the shade or artificially at 40°C. Chemical composition was analyzed qualitatively and quantitatively by gas coupled with mass spectrometer chromatography (GC/MS) and gas chromatography using a flame ionizer (GC-FID), respectively. The method of drying changed the content and chemical composition of the essential oil of guava leaves. Drying in the shade reduced the content and altered the constituents of the essential oil, whereas drying in an oven at 40°C, despite having reduced the amounts of the constituents, exhibited the highest essential oil content and increased the concentration of certain major constituents as compared to that in the natural shade drying method. The major components found in the essential oil of leaves regardless of the drying processes were trans-caryophyllene, ?-humulene, aromadendrene, ?-selinene, and selin-11-en-4?-ol. According to reports in the literature, these compounds possess fungicidal, insecticidal, antimicrobial, and anti-inflammatory activity, among others beneficial actions.

Chemical Composition of Yemeni Medicinal Plants Essentials Oils and Their Antibacterial and Antioxidant Activities

2018 ◽  
Vol 18 (3-4) ◽  
pp. 195-203
Author(s):  
Y.N. Otaifah ◽  
A. Bouyahya ◽  
A. Talbaoui ◽  
H. Harhar ◽  
S. El Hajjaji
Keyword(s):  
Staphylococcus Aureus ◽  
Chemical Composition ◽  
Medicinal Plants ◽  
Essential Oil ◽  
Essential Oils ◽  
Antibacterial Effect ◽  
Antioxidant Activities ◽  
Biological Activities ◽  
Biological Potential ◽  
Antioxidant Agents

Medicinal plants have been used since time immemorial to fight against diseases. The biological activities of these plants may be due to the presence of bioactive compounds such as essential oils. The aim of this study was to determine the chemical composition of three Yemen medicinal plants, and e evaluate their antibacterial and antioxidant activities. The chemical composition of essential oils was determined using gas chromatography–mass spectrometry (GC–MS) analysis. The antibacterial effect was evaluated against pathogenic bacterial strains using the micro-platoon method and the antioxidant activity was estimated by DPPH (2,2-diphenyl-1-picrylhydrazyl) scanning radical assay. Essential oils (EOs) are rich in phenolic compound. Carvotanacetone is the main compound of Pulicaria jaubertii (PJ) essential oil (82.35%) and β-maaliene (64.94%) is the major compound of Plectranthus montanus Benth (PMB) essential oil, while, Tarchonanthus camphoratus (TC) essential oil possesses several main compounds such as fenchol (14.5%), α-pinene (12.43%), and α-terpineol (8.58%). Essential oils of PJ and PMB showed remarkable antibacterial effect against Staphylococcus aureus (minimum inhibitory concentration, MIC = 0.25% [v/v]), and PJEO against Escherichia coli (MIC = 0.25%[v/v]); the lowestMBC (minimum bactericidal concentration) values was obtained with PJEO against Staphylococcus aureus (CMI = 0.25% [v/v]). TCEO interestingly showed capacity while scanning the DPPH radical (6.32 mg E Trolox). These findings showed the biological potential of Yemeni aromatic medicinal plants as antibacterial and antioxidant agents. However, further investigations are needed to determine the antibacterial and antioxidant mechanisms of these oils.

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