Teor e composição química de óleo essencial de cidró em função da sazonalidade e horário de colheita

Paulus, Dalva; Valmorbida, Raquel; Toffoli, Ezequiel; Nava, Gilmar Antônio

doi:10.1590/s0102-05362013000200005

Cited by 12 publications

(11 citation statements)

References 8 publications

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“…The essential oil yield of 0.162 and 0.187% observed before and after the formation of frost (Table 1), respectively, is in agreement with results found by Paulus et al (2013) who found lower essential oil content of A. triphylla during the winter, ranging from 0.07 to 0.27%. Taiz and Zeiger (2013) argue that a reduction in temperature and other weather elements can reduce the primary and secondary metabolism of the plant, causing cellular stress, and a lower rate of essential oil synthesis.…”

Section: Discussionsupporting

confidence: 90%

“…According to Paulus et al (2013), A. triphylla cultivated in the slightly more northern state of Paraná began losing leaves between the months of May and June, at a gradual rate of 40%; the authors observed a total loss of leaves in July due to the occurrence of frost which made it impossible to harvest leaves for analysis.…”

Section: Introductionmentioning

confidence: 99%

“…The chemical composition of essential oil is genetically determined; however several abiotic factors such as light, temperature, and water availability can significantly modify the production of secondary metabolites. For species of A. triphylla, production and composition of essential oil appears to be due to climatic conditions, especially temperature and radiation (Paulus et al, 2013). The effect of frost on essential oil composition and production is relatively unknown.…”

Section: Introductionmentioning

confidence: 99%

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Effect of frost on yield and composition of Aloysia triphylla essential oil

Schmidt¹,

Caron²,

Prochnow³

et al. 2016

J. Med. Plants Res.

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Aloysia triphylla, also known as lemon verbena is a medicinal plant with aromatic leaves which produce essential oil rich in citral and has great importance for pharmaceutical and cosmetic industries. The objective of this study was to evaluate the effect of frost on the chemical composition and yield of A. triphylla essential oil. The experiment was conducted at the Campus of UFSM in Frederico Westphalen, Rio Grande do Sul, in July 2014. A complete randomized design with three repetitions was used where three random collections and extractions occurred before and after the occurrence of frost. The oil was obtained via hydrodistillation and analyzed by a process of gas chromatography and mass spectrometry. The total yield obtained from leaves before frost was 0.162% and 0.187% after frost. Essential oil composition was largely not affected by the presence of frost; however, of the macro components, limonene was observed to be most sensitive to frost, accounting for 14.36% of essential oil content before and 10.15% after frost.

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of frost on yield and composition of Aloysia triphylla essential oil

Schmidt¹,

Caron²,

Prochnow³

et al. 2016

J. Med. Plants Res.

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“…Some studies have been carried out aiming to evaluate biomass production and the oil content of cidró (Brant et al, 2008(Brant et al, , 2010Paulus et al, 2013), since this species has aroused economic interest, considering exploitation of compounds with therapeutic properties. Research related to ecophysiology of this species are scarce.…”

Section: Palavras-chavementioning

confidence: 99%

Physiological response of cidró to different water replacement levels in two seasons of the year

et al. 2017

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We aimed to determine the response of cidró (Aloysia triphylla) submitted to different water replacement levels in summer and winter, in order to understand and relate the plant physiological performance under adverse weather conditions. The research was developed in a protected environment, in the city of Frederico Westphalen, Rio Grande do Sul State, Brazil. The experimental design was completely randomized, arranged in a 2x4x2 factorial scheme, two seasons of the year (summer and winter), four water availability (50, 75, 100, 125% of ETo) and two faces of leaf (abaxial and adaxial), with four replications. There were evaluated stomatal vapor diffusion resistance (s/cm), transpiration (µg/cm2/s) and leaf temperature (°C), on both faces of the leaf from 10 a.m. to 11 a.m., 1 p.m. to 2 p.m. and 4 p.m. to 5 p.m., 45 days after the beginning of the season. We concluded that the physiological response of cidró plants was influenced by water replacement levels, in a different way according to the seasons of the year. The summer season was responsible for the highest values of incident photosynthetically active radiation, leaf temperature, transpiration and stomatal vapor diffusion resistance. The reduction in water availability promoted the increase in values for stomatal resistance to vapor flow, reducing leaf transpiration rate. The incident photosynthetically active radiation, leaf temperature and transpiration showed highest values on the abaxial face of the studied species.

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“…Secondary metabolism is known for showing response patterns related to environmental stimuli, and it is thought that increased concentrations of active ingredients might establish a connection between the environmental temperature and metabolic activity of the plant (BLANK et al, 2005). Temperature and luminosity varies throughout the day, which can alter the quantity and chemical composition of essential oil (PAULUS et al, 2013). Therefore, identifying the best time to carry out the collection and the time when production of the essential oil by medicinal plants is higher, is important with regard to production of these special metabolites (PAULUS et al, 2013, MIRANDA et al, 2013.…”

Section: The Essential Oil Plants Contents Can Be Affected By Severalmentioning

confidence: 99%

Harvest time on the content and chemical composition of essential oil from leaves of guava

Silva

Alves

et al. 2016

Cienc. Rural

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The essential oil plants contents can be affected by several factors. For example, in certain plants, collection time has been observed to affect the content and chemical composition of the essential oil obtained from the plant. The objective of this study was to evaluate the effect of collection time on the . Leaves collected at 7:00 AM had higher essential oil production, with a content of 0.38% (d.b.), whereas leaves collected at 7:00 PM had lower essential oil production, 0. 24% (d.b.) 4%, 63.8-61.7%, and 15.9-13.2%, respectively (2,(2)(3)(4)4%),(1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)1%),(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)4%), aromadendreno (7,(6)(7)(8)(9)(10)(11)(12)2%),(3)(4)(5)(6)(7)(8)(9)(10)(11)3%), óxido de cariofileno (3,3%) epóxido de humuleno II (4,(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)1%) (63,8-61,7% e 15,9-13,2%, respectivamente). RESUMO Existem fatores que podem afetar o conteúdo de óleo essencial das plantas, sendo o horário de coleta um deles. Assim, observa-se que o teor e a composição química de óleo essencial podem variar em certas plantas de acordo com horário de coleta. O objetivo deste trabalho foi avaliar o efeito do horário de coleta sobre o conteúdo e a composição química do óleo essencial das folhas de goiabeira (Psidium guajava). Folhas de Psidium guajava foram coletadas em diferentes horários do dia para determinar teor e composição química de seu óleo essencial. O óleo essencial não apresentou variação qualitativa da composição química em relação ao horário de coleta das folhas de Psidium guajava, mas alterou a concentração das substâncias, entre elas o α-humuleno e o trans-cariofileno. Os constituintes principais do óleo essencial das folhas de Psidium guajava são o limoneno Palavras-chave: Psidium guajava L., plantas medicinais, metabólitosespeciais, α-humuleno, trans-cariofileno, goiaba.

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Teor e composição química de óleo essencial de cidró em função da sazonalidade e horário de colheita

Cited by 12 publications

References 8 publications

Effect of frost on yield and composition of Aloysia triphylla essential oil

Effect of frost on yield and composition of Aloysia triphylla essential oil

Physiological response of cidró to different water replacement levels in two seasons of the year

Harvest time on the content and chemical composition of essential oil from leaves of guava

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