Essential oil constituents of three varieties of Kenyan sweet oranges (<i>Citrus sinensis</i>)

Njoroge, Simon Muhoho; Koaze, Hiroshi; Karanja, Paul; Sawamura, Masayoshi

doi:10.1002/ffj.1377

Cited by 69 publications

(56 citation statements)

References 11 publications

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“…The major compounds found in the volatile oil were D-limonene (95.35%) and β-myrecene (2.48%). Similar results were reported by other researchers examining C. sinesis grown in other parts of the world (K rbaslar et al, 2009;Njoroge et al, 2005;Selli et al, 2007;Sharma and Tripathi, 2006). For example, twenty-seven components were identified in essential oil obtained from the peel of Bingtang sweet orange (C. sinensis Osbeck) from China with 77.48% of D-limonene (Tao et al, 2009).…”

Section: Discussionsupporting

confidence: 83%

D-limonene rich volatile oil from blood oranges inhibits angiogenesis, metastasis and cell death in human colon cancer cells

2012

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Section: Discussionsupporting

confidence: 83%

D-limonene rich volatile oil from blood oranges inhibits angiogenesis, metastasis and cell death in human colon cancer cells

2012

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“…According to some reports (Espina et al, 2011;Njoroge, Koaze, Karanja, & Sawamura, 2005;Singh et al, 2010), LN is found at around 90%, recognized as the major component of AN, coinciding with our results, in which AN presented 91.12% of LN; however in the folded oils, a decrease of this compound was observed, resulting in 72.08% and 73.77% of LN in 5× and 10×, respectively, while in the 20×, a lower amount was observed (23.24%). Nevertheless, LN was still the leading component in all oils analyzed.…”

Section: Chemical Composition Of the Citrus Eossupporting

confidence: 92%

Chemical composition, antimicrobial, and antioxidant activities of orange essential oil and its concentrated oils

Torres-Alvarez

González

Rodríguez

et al. 2016

CyTA - Journal of Food

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In this study, the chemical composition, antimicrobial, and antioxidant activities of orange essential oil (AN), its folded orange oils (5×, 10×, 20×) and d-limonene (LN) were investigated. The results observed in the chemical composition showed a decrease in the major component LN, in contrast to other minor components, which increased their concentration, such as decanal, linalool, and α-terpineol. The antimicrobial activity was determined for foodborne pathogens using the disk diffusion method followed by the minimum inhibitory concentration and minimum bactericidal concentration. Results showed that folded orange oils (5×, 10×, 20×) had better antimicrobial activity than AN and LN. The antioxidant activity was carried out by 2,2ʹ-azinobis-3-ethylbenzthiazoline-6-sulphonate and 1,1-diphenyl-2-picrylhydrazyl methods; folded orange oil 20× presented significantly better results (p ≤ 0.05) than other oils studied. Using folded oils from AN could be a natural alternative in food processing as ingredients with antimicrobial and antioxidant effect.Perfil químico, actividad antimicrobiana y antioxidante del aceite esencial de naranja y sus aceites concentrados RESUMEN En este estudio, se investigó la composición química, actividad antimicrobiana y antioxidante del aceite esencial de naranja (AN), sus concentrados (5×, 10×, 20×) y d-limoneno (LN). Los resultados en la composición química mostraron una disminución del componente mayoritario d-limoneno, contrario a otros componentes minoritarios que aumentaron su concentración como es el decanal, linalol y α-terpinol. La actividad antimicrobiana fue determinada para bacterias de importancia en alimentos por el método de difusión en disco seguido de la concentración mínima inhibitoria (CMI) y concentración mínima bactericida (CMB). Los resultados mostraron que los aceites concentrados (5×, 10×, 20×) presentaron significativamente mayor actividad antimicrobiana que el AN y LN. La actividad antioxidante se realizó por los métodos de ABTS y DPPH obteniendo que la fracción 20×, presentó actividad antioxidante significativamente mayor (p ≤ 0,05) que los demás aceites estudiados. Los aceites concentrados del aceite esencial de naranja podrían ser una alternativa en la aplicación en alimentos como ingredientes con efecto antimicrobiano y antioxidante ARTICLE HISTORY

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“…c) relative peak area percentage (peak area relative to the total peak area %) d) −, not detected. citronellal, linalool, β-caryophyllene, α-terpineol, and nootkatone are common among different geographically located samples (Sawamura et al, 2001;Njoroge et al, 2005). Additionally, γ-sitosterol, stigmasterol, and tengeretin as well as free fatty acids and their esters previously reported in immature dangyuja fruits (Lim et al, 2009), were also found in the supercritical extract of mature fruits in this study.…”

Section: Gc-ms Analysis Chromatographic Analysis Was Carried Out Usinsupporting

confidence: 79%

“…Conventional methods of extraction show that the concentration of limonene in C. grandis peel is 72.31 − 94.8% in samples from different geographic origins (Khan et al, 2007, Sawamura et al, 2001, Njoroge et al, 2005. However, in the present study, limonene was 18.67% in whole fruits of dangyuja, whereas it was 3.41% and 12.14% in phalsak and yeagam respectively.…”

Section: Gc-ms Analysis Chromatographic Analysis Was Carried Out Usincontrasting

confidence: 66%

Chemical Composition and Antiproliferative Activity of Supercritical CO2 Extracts from Citrus Fruits

Gyawali

Moon

Jeon

et al. 2012

FSTR

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Supercritical CO 2 extract from fruits of Citrus hassaku Hort ex Tanaka, Citrus iyo Hort. ex Tanaka, and Citrus grandis Osbeck, locally known as phalsak, yeagam, and dangyuja, respectively, in Korea, were analyzed by gas chromatography-mass spectrometry (GC-MS). In total, 70, 79, and 76 compounds were identified in fruits of phalsak, yeagam, and dangyuja respectively. (Z)-9-Octadecenoic acid was the major compound in phalsak, whereas limonene prevailed among the others. α-Terpineol, (E,E)-2,4-decadienal, hexadecanoic acid, pentacosane, stigmasterol, and γ-sitosterol were prominent in all species. Antiproliferative activity of the fruit extract was revealed through the colorimetric MTT (tetrazolium) assay against human glioblastoma U373MG, SNU-16 gastric cancer cells, HeLa cervix adenocarcinoma cells and AGS gastric adenocarcinoma cells. Although all tested fruit extracts exhibited antiproliferative effects toward cancer cells, different cell lines varied in their sensitivity to the same plant fruit extract.

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Essential oil constituents of three varieties of Kenyan sweet oranges (Citrus sinensis)

Cited by 69 publications

References 11 publications

D-limonene rich volatile oil from blood oranges inhibits angiogenesis, metastasis and cell death in human colon cancer cells

D-limonene rich volatile oil from blood oranges inhibits angiogenesis, metastasis and cell death in human colon cancer cells

Chemical composition, antimicrobial, and antioxidant activities of orange essential oil and its concentrated oils

Chemical Composition and Antiproliferative Activity of Supercritical CO2 Extracts from Citrus Fruits

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