Effect of natural and artificial drying of leaf biomassof Psidium guajava on the content and chemical composition of essential oil
| Autor: | Edson Luiz Souchie, José Milton Alves, Cassia Cristina Fernandes Alves, Vanessa Paula da Silva, Elizabeth Aparecida Josefi da Silva, Luiz C. A. Barbosa |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Psidium Humulene Myrtaceae Hidrodestilação Antimicrobial 01 natural sciences lcsh:S1-972 law.invention Fungicide Terpene 010602 entomology chemistry.chemical_compound Horticulture chemistry law Goiabeira Botany Gas chromatography lcsh:Agriculture (General) General Agricultural and Biological Sciences Chemical composition Essential oil Plantas medicinais 010606 plant biology & botany |
| Zdroj: | Semina: Ciências Agrárias, Vol 37, Iss 5, Pp 3059-3068 (2016) |
| ISSN: | 1679-0359 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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