Seasonal influence on the essential oil production of Nectandra megapotamica (Spreng.) Mez

Amaral, Lúcio de Paula; Tondolo, Juliana S. M.; Schindler, Bianca; Silva, Daniela Thomas da; Pinheiro, Carlos Garrido; Longhi, Solon Jonas; Mallmann, Carlos Augusto; Heinzmann, Berta Maria

doi:10.1590/s1516-8913201502462

Cited by 26 publications

(24 citation statements)

References 27 publications

(28 reference statements)

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“…Among the major components of the essential oil from A. triphylla, limonene tends to be very sensitive to variation in growing conditions, including changes in temperature and irrigation (Table 4). Similar results were reported by Amaral et al (2015), who described the composition of Nectandra megapotamica essential oil and reported an influence of season on the limonene content. The chemical composition of the essential oil from A. triphylla varied depending on daily, seasonal, and annual changes, subsequently affecting the concentration of the alkaloids (Chagas et al, 2011).…”

Section: Chemical Characteristics Of the Essential Oilsupporting

confidence: 90%

Effect of season and irrigation on the chemical composition of Aloysia triphylla essential oil

et al. 2019

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Effect of season and irrigation on the chemical composition of Aloysia triphylla essential oil Aloysia triphylla is an aromatic plant used in several industrial sectors, owing to the chemical properties of its essential oil. Biosynthesis of organic compounds is influenced by the growth conditions. As such, temporal and spatial variation affect the chemical composition of essential oils. We hypothesized that: i) the chemical composition of A. triphylla essential oil is influenced by differences in irrigation and season; and ii) the major components of A. triphylla essential oil do not vary between treatment conditions. To test these hypotheses, we determined the chemical composition of A. triphylla essential oil as a function of four seasons crossed with four irrigation levels. A completely randomized experimental design with a randomized block in a 4 × 4 factorial scheme, representing the four seasons of the year (summer, autumn, winter, and spring) and four irrigation levels (50%, 75%, 100%, and 125% of the reference evapotranspiration), was used with four replicates. Our results show that the chemical composition of A. triphylla essential oil varied with the two study factors, of which season was the major factor. The highest concentrations of constituents classified as monoterpene and sesquiterpene were observed in the summer season, and the highest constituents of the other group of compounds were observed in winter. In addition, the major components of the essential oil were α-citral, limonene, and β-citral, and their levels were the highest during winter.

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Section: Chemical Characteristics Of the Essential Oilsupporting

confidence: 90%

Effect of season and irrigation on the chemical composition of Aloysia triphylla essential oil

et al. 2019

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“…According to the chemical analyses of the 41 EOs, spathulenol, α ‐cadinol and τ ‐muurolol were identified as the main compounds comprising the oils. Previous work has highlighted the importance of the spathulenol as an antibacterial agent . Seven terpenes, named τ ‐muurolene, α ‐muurolene, elemol, spathulenol, τ ‐muurolol, Ses4 and Ses5, were commonly identified within the 41 EOs.…”

Section: Resultsmentioning

confidence: 99%

“…Previous work has highlighted the importance of the spathulenol as an antibacterial agent. [6,7] Seven terpenes, named τ-muurolene, α-muurolene, elemol, spathulenol, τ-muurolol, Ses4 and Ses5, were commonly identified within the 41 EOs. A one-way ANOVA was performed so as to evaluate the differences in percentages of terpenes present among sets of oils ( Figure 1A).…”

Section: Resultsmentioning

confidence: 99%

Interference of Seasonal Variation on the Antimicrobial and Cytotoxic Activities of the Essential Oils from the Leaves of Iryanthera polyneura in the Amazon Rain Forest

Martins¹,

Díaz

Paciência³

et al. 2019

Chemistry & Biodiversity

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The essential oils (EOs) obtained from the leaves of Iryanthera polyneura Ducke trees was chemically Assessed and tested for the ability of inhibiting the growth of Candida albicans, Enterococcus faecalis, Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Streptococcus mutans and S. sanguinis. The oil was also tested against breast (MCF‐7) and prostate (PC‐3) cancer cell lines. Minimum bactericidal concentrations (MBCs) and 50 % inhibition concentrations (IC50) values were obtained. EOs were active against Gram‐positive bacteria. Spathulenol, α‐cadinol and τ‐muurolol were major components of EOs. The oils showed a higher cytotoxicity against PC‐3 than MCF‐7 cells, although the oils were active against both cell types. Oils obtained from leaves collected in the dry season were more active against E. faecalis, S. aureus and PC‐3, while the oils obtained from leaves collected in the rainy season were more active against S. mutans, S. sanguinis and MCF‐7. The antibacterial and cytotoxic activities of the essential oils from the leaves of I. polyneura are related to the seasonal climate variation and are influenced by compounds that are minor components of the oils.

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“…A variável analisada foi o rendimento de OE (m/m%) transformado para arcosseno anteriormente à análise estatística. (PIMENTEL et al, 2012;AMARAL et al, 2015).…”

Section: Análise Estatísticaunclassified

“…Conforme Gobbo-Neto e Lopes (2007), a tendência no aumento do rendimento dos OE é mais suscetível ao ciclo vegetativo que as variações climáticas observadas. Vale ressaltar que a espécie N. megapotamica, que também ocorre no bioma Mata Atlântica, teve a influência sazonal sobre a produção de OE recentemente avaliada e, da mesma forma que N. grandiflora, apresentou maior teor de OE na primavera (AMARAL et al, 2015).…”

Section: Al 2015)unclassified

ANÁLISE DO EFEITO DA SAZONALIDADE SOBRE O RENDIMENTO DO ÓLEO ESSENCIAL DAS FOLHAS DE Nectandra grandiflora Nees1

et al. 2015

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RESUMO -Este estudo teve por objetivos avaliar o efeito da sazonalidade sobre o teor de óleo essencial (OE) presente nas folhas de Nectandra grandiflora Nees e determinar se a secagem do material vegetal à temperatura ambiente influencia o rendimento do OE. Para tanto, foi coletado material vegetal de 12 indivíduos ao longo de um ano, e o OE foi extraído separadamente de folhas frescas e folhas secas, pelo método de hidrodestilação. Paralelamente, 20 g de folhas frescas foram levados à estufa a 40 °C até peso constante, para determinação do teor de umidade, procedimento esse realizado para cada coleta, individualmente. O rendimento de OE das folhas (% m/m) foi calculado para o material vegetal fresco com base em massa de matéria seca, determinado considerando o teor de umidade, bem como para o material seco à temperatura ambiente. Os dados de rendimento foram analisados através do teste de Tukey (P<0,05). Os resultados mostraram que o teor de OE das folhas da espécie apresentou variabilidade sazonal, com a maior produção detectada na primavera (0,75 ± 0,06%). Esse valor foi estatisticamente diferente dos rendimentos encontrados nas outras estações do ano, sendo o menor rendimento obtido no inverno (0,39 ± 0,02%). Desse modo, indicase que a coleta de folhas de N. grandiflora seja realizada durante a primavera, visando obter maior teor de OE. Adicionalmente, verificou-se que não há perda de teor OE durante o processo de secagem à temperatura ambiente e, dessa forma, esse procedimento pós-colheita poderá vir a ser adotado sem comprometer o rendimento do extrativo.Palavras-chave: Extrativos vegetais; Lauraceae; Produtos florestais não madeireiros. ANALYSIS OF THE SEASONALITY EFFECT ON THE ESSENTIAL OIL YIELD OF LEAVES OF Nectandra grandiflora NeesABSTRACT -This study aimed to evaluate the effect of seasonal variability on the yield of essential oil (EO) present in leaves of Nectandra grandiflora Nees and as well as to determine whether the drying process at room temperature of the plant material influences the yield of this EO. Plant material was collected from 12 individuals over a year and EO was extracted by hydrodestillation separately from fresh and dried leaves. Simultaneously, 20 g of fresh leaves was taken to stove at 40 ºC to constant weight for determination of moisture content. This procedure was performed for each collection individually. The yield of EO in leaves (% w/w) was calculated for fresh plant material based on dry matter, determined by considering the moisture content, as well as for the material dried at room temperature. The yields were analyzed by Tukey test (P<0.05). Results

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Seasonal influence on the essential oil production of Nectandra megapotamica (Spreng.) Mez

Abstract: This study evaluated the seasonal influence on the yield and chemical composition of the essential oil (EO) of Nectandra megapotamica. Fresh young (YL) and old leaves (OL) obtained from three trees in each season (Nov/2010 to Sep/2011

Cited by 26 publications

References 27 publications

Effect of season and irrigation on the chemical composition of Aloysia triphylla essential oil

Effect of season and irrigation on the chemical composition of Aloysia triphylla essential oil

Interference of Seasonal Variation on the Antimicrobial and Cytotoxic Activities of the Essential Oils from the Leaves of Iryanthera polyneura in the Amazon Rain Forest

ANÁLISE DO EFEITO DA SAZONALIDADE SOBRE O RENDIMENTO DO ÓLEO ESSENCIAL DAS FOLHAS DE Nectandra grandiflora Nees1

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