RESUMO
Cytotoxic, antioxidative, and antimicrobial activities of Camellia annamensis, and its chemical compositions were first provided in the current study. Phenolic contents in the methanol extracts of its leaves and flowers were 222.73 ± 0.09 and 64.44 ± 0.08 mg GAE/g extract, whereas flavonoid contents in these parts were 108.80 ± 0.28 and 131.26 ± 0.39 mg rutin/g extract, respectively. By using HPLC-DAD analysis, gallic acid (43.72 ± 0.09 - 81.89 ± 1.83 mg/g) and (-)-epigallocatechin gallate (67.31 ± 1.26 - 70.68 ± 7.82 mg/g) were identified as the major compounds. C. annamensis leaf and flower extracts were moderately cytotoxic against A549, HT-29, SK-Mel-2, MCF-7, HepG2, HeLa, and MKN-7. Particularly, they are better than the standards trolox (IC50 7.57 ± 0.23 µg/mL) in lipid peroxidation inhibitory evaluation, and streptomycin (IC50/MIC = 45.34-50.34/128-256 µg/mL) in antimicrobial assay against the Gram-positive bacteria Enterococcus faecalis ATCC299212, Staphylococcus aureus ATCC25923, and the Gram-negative bacterium Salmonella enterica ATCC13076.
RESUMO
The chemical constituents and antimic robial activity of the essential oil isolated from the rhizomes of Alpinia menghaiensis S.Q. Tong & Y.M. Xia in S.Q. Tong from Vietnam was studied and reported. The techniques of gas chromatography (GC) and gas chromatography coupled with mass spectrometry (GC/MS) were used to characterize the chemical constituents of the essential oil while the microdilution assay was used to evaluate the antimicrobial activity. The main compounds identified in the rhizome essential oil consist of ß - pinene (46.5%), ß - phellandrene (25.7%) and α - pinene (8.5%). The studied essential oil inhibited the growth of Pseudomonas aeruginosa ATCC27853 with minimum inhibitory concentrations (MIC) value of 15.32 µg/mL ± 0. 01, and median inhibitory concentration (IC50) value of 32.0 ± 0.01 µg/mL. The essential oil also displayed activity against Staphylococcus aureus ATCC25923 (MIC 31.57 ± 0.01 µg/mL) and Bacillus cereus ATCC14579 (MIC, 34.21 µg/mL ± 0.01 µg/mL), and IC 50 va lue of 64.0 ± 0.01 µg/mL. This is the first report on the rhizome oil composition, as well as the antimicrobial of essential oils from A. menghaiensis . The paper discusses further the comparative analysis of essential oils from A. menghaiensis .
Se investigaron los componentes químicos y la actividad antimicrobiana del aceite escencial aislado de los rizomas de Alpinia menghaiensis S.Q. Ton g & Y. M. Xia en S.Q. Tong de Vietnam. Se usaron las técnicas de cromatografía de gases (GC) y cromatografía de gases con espectrometría de masas (GC/MS) para caracterizar los componentes químicos del aceite escencial, mientras que se utilizó un ensayo de microdilución para evaluar la actividad antimicrobial. Se identificaron los componentes principales en el aceite escencial del rizoma, compuesto de ß - pineno (46.5%), ß - fellandreno (25.7%) y α - pineno (8.5%). El aceite escencial estudiado inhibió el crecimie nto de Pseudomonas aeruginosa ATCC27853 con concentraciones de actividad mínima inhibitoria (MIC) de 15.32 µg/mL ± 0.01, y una m ediana de concentración inhibitoria (IC 50 ) de 32.0 ± 0.01 µg/mL. El aceite escencial también mostró actividad contra Staphylococ cus aureus ATCC25923 (MIC 31.57 ± 0.01 µg/mL) y Bacillus cereus ATCC14579 (MIC, 34.21 µg/mL ± 0.01 µg/mL), y valor IC 50 de 64.0 ± 0.01 µg/mL. Este es el primer reporte sobre la composición del aceite de rizoma, así como de las propiedades antimicrobianas d e los aceites escenciales de A. menghaiensis . El artículo discute el análisis comparativo de los aceites escenciales de A. menghaiensis .
Assuntos
Óleos Voláteis/química , Alpinia/química , Vietnã , Cromatografia Gasosa/métodos , Alpinia/efeitos dos fármacos , Anti-Infecciosos/químicaRESUMO
This paper reports the chemical composition of essential oils obtained from Pinus dalatensis FerreÌ, Pinus kwangtungensis Chun ex. Tsiang and Pinus armandii subsp. xuannhaensis L.K. Phan. The oils were studied by gas chromatograpgy (GC) and gas chromatography coupled to mass spectrometry (GC-MS). The main constituents of P. dalatensis were the terpene hydrocarbons namely α-pinene (38.2%), ß- pinene (25.3%), ß-myrcene (11.0%) and ß-caryophyllene (10.5%), while α-cedrol (19.2%) was the only significant compound of P. armandi subsp. xuannhaensis. P. kwangtungensis showed ß-pinene (26.3%), α-pinene (18.0%), limonene (16.1%) and ß-myrcene (10.4%) as the dominant compounds. The volatile constituents of P. dalatensis and P. armandi subsp. xuannhaensis are being reported for the first time.
En este artiÌculo se reportan los constituyentes quiÌmicos de los aceites esenciales de Pinus dalatensis FerreÌ, Pinus kwangtungensis Chun ex. Tsiang y Pinus armandii subsp. Xuannhaensis L.K. Phan que se analizaron mediante cromatografiÌa de Gases (GC) y por CromatografiÌa de Gases acoplada a la EspectrometriÌa de Masas (GC-EM). Los principales constituyentes de P. dalatensis fueron los hidrocarburos terpeÌnicos, a saber, α-pineno (38.2%), ß-pineno (25.3%), ß-mirceno (11.0%) y ß-cariofileno (10.5%). Por otro lado, α- cedrol (19.2%) fue el uÌnico compuesto significativo de P. armandi subsp. Xuannhaensis mientras que el aceite de P. kwangtungensis estuvo dominado por ß-pineno (26.3%), α-pineno (18.0%), limoneno (16.1%) y ß-mirceno (10.4%). Los constituyentes volaÌtiles de P. dalatensis y P. armandi subsp. xuannhaensis se informa por primera vez.
Assuntos
Óleos Voláteis/química , Pinus/química , Terpenos/análise , Vietnã , Cromatografia Gasosa-Espectrometria de MassasRESUMO
The chemical compositions of essential oils obtained by hydrodistillation of the leaves, stems and flowers of Euodia lepta and Euodia callophylla grown in Vietnam and then analysed by gas chromatography-flame ionization detector (GC-FID) and gas chromatography/mass spectrometry (GC-MS) were being reported. The main compounds of the leaves oil of E. lepta were (E)-beta-ocimene (24.4 percent), alpha-pinene (9.8 percent), (Z)-beta-ocimene (6.3 percent) and delta-cadinene (5.2 percent), while the stems oil comprised of spathulenol (26.0 percent), (E)-beta- ocimene (9.9 percent) and (Z)-9-octadecenamide (7.7 percent). However, ciscarane (19.2 percent), alpha-cadinol (10.8 percent), alpha-pinene (10.5 percent) and (E)-beta-ocimene (9.0 percent) were present in the flowers oil of E. lepta. On the other hand, alpha-pinene (8.3 percent), trans-alpha-bergamotene (7.5 percent), (E)-beta-ocimene (7.0 percent) and (E)-nerolidol (6.6 percent) were the major constituents of the leaves oil of E. calophylla. The quantitatively significant compounds of the stems oil were (E,E)-alpha-farnesene (11.9 percent), alpha-terpinolene (11.3 percent) and alpha-pinene (8.2 percent), while alpha-pinene (21.6 percent), limonene (19.0 percent) and sabinene (15.5 percent) were obtained from the flowers oil...
La composición químicas de los aceites esenciales obtenidos por hidrodestilación de las hojas, tallos y flores de Euodia lepta y Euodia callophylla cultivadas en Vietnam, fueron analizados por cromatografía de gases-detector de ionización de llama (GC-FID) y la cromatografía de gases/espectrometría de masas (GC-MS). Los principales compuestos del aceite de hojas de E. lepta fueron (E) -beta-ocimeno (24,4 por ciento), alfa-pineno (9,8 por ciento), (Z)-beta- ocimeno (6,3 por ciento) y delta-cadineno (5.2 por ciento), mientras que los tallos de aceite estaban compuestos de spatulenol (26,0 por ciento), (E) -beta-ocimeno (9,9 por ciento) y (Z) -9- octadecenamida (7,7 por ciento). Sin embargo, cis-carano (19,2 por ciento), alfa-cadinol (10,8 por ciento), alfa-pineno (10,5 por ciento) y (E) -beta-ocimeno (9,0 por ciento) estaban presentes en el aceite de flores de E. lepta. Por otro lado, alfa-pineno (8,3 por ciento), trans-alfa-bergamoteno (7,5 por ciento), (E) - beta-ocimeno (7,0 por ciento) y (E) -nerolidol (6,6 por ciento) fueron los principales constituyentes del aceite de las hojas de E. calophylla. Los compuestos cuantitativamente significativos del aceite de los tallos fueron (E, E)-farneseno -alfa (11,9 por ciento), alfa-terpinoleno (11,3 por ciento) y alfa-pineno (8,2 por ciento), mientras que alfa-pineno (21,6 por ciento), limoneno (19,0 por ciento) y sabineno (15,5 por ciento) se obtuvieron del aceite de las flores...