Teores do óleo essencial de cidrão [Aloysia triphylla (L'Hérit) Britton (Verbenaceae)] em diferentes horários de colheita e processamentos pós-colheita

Brant, Renata da Silva; Pinto, José Eduardo Brasil Pereira; Bertolucci, Suzan Kelly Vilela; Silva, Andréa Alice; Albuquerque, Carlos Juliano Brant

doi:10.1590/s1413-70542009000700061

Cited by 10 publications

(7 citation statements)

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“…A total of 17 and 16 compounds were identified in the essential oil of the guava leaves collected during the rainy and dry seasons, respectively. Similar results were reported by Craveiro et al (1981) in their study on the chemical composition of the essential oil of the guava leaves. RI* Retention index obtained with reference to the n-alkane homologous series using an SPB-5 column.…”

supporting

confidence: 90%

“…The higher essential oil content observed during the rainy season than that during the dry season can be attributed to the climactic conditions. The average temperature (29 °C) and relative humidity (70%) were relatively high in January offering favorable conditions for the production of essential oil (BRANT et al, 2008). Further, the long summer days might have been an influencing factor, as well, offering conditions conducive for the vegetative growth of the plants.…”

mentioning

confidence: 99%

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Chemical composition of the essential oil of Psidium guajava leaves and its toxicity against Sclerotinia sclerotiorum

Silva

Alves

et al. 2018

SCA

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Globally, the fungus Sclerotinia sclerotiorum is considered as one of the most important phytopathogens, since it affects the production of several economically important crops. Further, it is difficult to control, thus increasing the use of pesticides. Therefore, the search for new substances, especially those extracted from plants, has received special attention to control this plant pathogen. The objective of the present study was to evaluate the yield and chemical composition of the essential oil extracted from the fresh leaves of guava collected during the rainy and dry seasons, and also to evaluate its toxicity against S. sclerotiorum. The experiment was a completely randomized design with five treatments and six replicates. The essential oil was extracted by hydrodistillation of the leaves and analyzed by gas chromatography-flame ionization detector and gas chromatography-mass spectrometry. The main compounds identified in the essential oil were trans-caryophyllene and ?-humulene. The essential oil at a concentration of 300 ?L exhibited 90% inhibition of the mycelial growth of S. sclerotiorum. This confirmed the antifungal potential of the essential oil of the guava leaves during both the sampling seasons.

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supporting

confidence: 90%

mentioning

confidence: 99%

Chemical composition of the essential oil of Psidium guajava leaves and its toxicity against Sclerotinia sclerotiorum

Silva

Alves

et al. 2018

SCA

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“…O adensamento de plantas alterou a composição qualitativa e quantitativa do óleo essencial, resultando em menores teores de geranial, neral e limoneno (Tabela 3). Brant et al (2009) encontraram teores semelhantes de neral (20%) e geranial (30%), em plantas de Aloysia triphylla, cultivadas no espaçamento de 1,0 x 1,0 m. Nas análises de Brant et al (2009), o citral (geranial + neral) correspondeu a, aproximadamente, 50% do óleo essencial. Já, neste trabalho, o teor de citral foi de 64,45%, no espaçamento de 1,0 x 1,0 m.…”

Section: Resultsunclassified

Teor e composição química do óleo essencial e crescimento vegetativo de Aloysia triphylla em diferentes espaçamentos e épocas de colheita

Paulus

Valmorbida²,

Toffoli³

et al. 2013

Rev. Ceres

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Content and constituents of essential oil of Aloysia triphylla in different row spaces and harvest timesThis study aimed to evaluate biomass production, content and components of the essential oil of Aloysia triphylla in different row spaces and harvest times. The experiment was conducted at the experimental area of Universidade Federal Tecnológica do Paraná -Campus Dois Vizinhos, from March 2010 to January 2012. The experimental design was a randomized block design with three replications in a factorial scheme (3 x 11), subdivided blocks allocated in three planting rows plot (1.0 x 1.0 m, 1.0 x 0.80 m, 1x 0,60 m between rows and between plants, respectively) and on subplots, 11 harvest times

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“…These factors contributed to the overlapping of curves for the spring and summer seasons, especially from 60 DABS. In the same context, Brant et al (2008) found slow growing Aloysia triphylla plants and reducing the essential oil content due to the presence of adverse weather conditions (rainfall, humidity and temperature).…”

Section: Leaf Area Of Aloysia Triphylla Is Altered By Shading Levelsmentioning

confidence: 91%

Biomass and morphological parameters of lemon verbena (Aloysia triphylla) under different shading levels during different seasonal conditions

Schmidt¹,

Caron²,

Menegat³

et al. 2017

Aust J Crop Sci

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Shading greenhouse may be an effective method to achieve a suitable environment for crop growth in subtropical regions. The aim of this study was to evaluate the production of leaves and branches as well as the morphological parameters of height and leaf area of the species Aloysia triphylla, under different shading levels throughout the seasons of the year. A randomized block design in factorial scheme 3x4x6, i.e., three levels of shading (0%, 30% and 50%), four seasons (summer, autumn, winter and spring) and six collection in each season (15, 30, 45, 60, 75 and 90 days after the beginning of each season), with four replications, was used. All evaluations were performed in 2012, since in the first evaluation (summer) the plants had 65 days after transplanting and the last evaluation (spring) the plants had 315 days after transplanting. The dry matter of leaves and branches, leaf area, and plant height were evaluated. The production of the dry matter of leaves and branches, and height and leaf area for the species Aloysia triphylla is influenced by shading levels and the seasons of the year. The variables are highly dependent on the seasonality of meteorological elements such as temperature, solar radiation, rainfall, and frost. In an environment with 0% shading, the dry matter production of leaves was 60.8 % higher in the spring, than those observed for the 30% and 50 % of shading, while this levels resulted higher production in the summer. We showed that the use of shading screens in order to attenuate the solar radiation in places or seasons where there is high light intensity is an effective method to achieve higher production of leaves, which is important source for the oil production.

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Teores do óleo essencial de cidrão [Aloysia triphylla (L'Hérit) Britton (Verbenaceae)] em diferentes horários de colheita e processamentos pós-colheita

Cited by 10 publications

References 1 publication

Chemical composition of the essential oil of Psidium guajava leaves and its toxicity against Sclerotinia sclerotiorum

Chemical composition of the essential oil of Psidium guajava leaves and its toxicity against Sclerotinia sclerotiorum

Teor e composição química do óleo essencial e crescimento vegetativo de Aloysia triphylla em diferentes espaçamentos e épocas de colheita

Biomass and morphological parameters of lemon verbena (Aloysia triphylla) under different shading levels during different seasonal conditions

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