Consulta: creatorFacets:"Alves,Cassia Cristina Fernandes"
Registros recuperados: 2
Data/hora: 16/06/2024 09:08:47

Harvest time on the content and chemical composition of essential oil from leaves of guava
Provedor de dados: 65
Autores: Silva,Elizabeth Aparecida Josefi da; Silva,Vanessa Paula da; Alves,Cassia Cristina Fernandes; Alves,José Milton; Souchie,Edson Luiz; Barbosa,Luiz Cláudio de Almeida.
ABSTRACT: 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 content and chemical composition of the essential oil from guava ( Psidium guajava L.) leaves. Leaves were collected at different times of the day and the content and chemical composition of their essential oil was determined. Collection time did not qualitatively affect the chemical composition of the essential oil. However, concentration of certain substances in the oil, such as α-humulene and trans-caryophyllene, did significantly vary at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Psidium guajava L.; Medicinal plants; Special metabolites; Α-humulene; Trans-caryophyllene; Guava.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001001771

Chemical composition of essential oil extracted from leaves of  Campomanesia adamantium subjected to different hydrodistillation times
Provedor de dados: 65
Autores: Oliveira,Juliana Dantas de; Alves,Daniely Karen Matias; Miranda,Mayker Lazaro Dantas; Alves,José Milton; Xavier,Marcelo Nogueira; Cazal,Cristiane de Melo; Alves,Cassia Cristina Fernandes.
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...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Essential oil; Hydrodistillation time; Sesquiterpenes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100751