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Limonene concentration in lemon (Citrus volkameriana) peel oil as a function of ripeness (1994)

Combariza, Marianny Yajaira ; Tirado, Cristian Blanco ; Stashenko, Elena ; [et al.]

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 17 (1994), S. 643-646

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ISSN: 0935-6304

Keywords: High Resolution Capillary GC ; High Resolution GC-MS ; Lemon oil ; Citrus volkameriana ; Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: The dependence of the limonene content of lemon (Citrus volkameriana) peel oil on the degree of ripeness of the fruit has been studied by using steam distillation and cold pressing to extract the oils from lemon fruit peel at different stages of maturation (green, greenish-yellow, and yellow-orange peel coloration). Samples of essential oils were analyzed by high resolution GC and GC-MS, using tetradecane as internal standard for quantitation. Forty components were detected; thirty eight were positively identified by comparison of their mass spectra (El, 70 eV) and Kováts retention indexes (determined using a non-logarithmic scale on capillary columns coated with both polar (DB-Wax) and non-polar (DB-1) stationary phases) with those of standards and with data reported in the literature. The limonene concentration reached a maximum level of 79.4% when the fruit was in the intermediate maturation stage characterized by greenish-yellow coloration.

Additional Material: 4 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/jhrc.1240170905

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HRGC and GC-MS analysis of essential oil from colombian ylang-ylang (Cananga odorata Hook fil. et Thomson, forma genuina) (1993)

Stashenko, Elena ; Martinez, Jairo René ; MacKu, Carlos ; [et al.]

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 16 (1993), S. 441-444

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ISSN: 0935-6304

Keywords: High resolution capillary gas chromatography ; High resolution gas chromatography-mass spectrometry ; Essential oil analysis ; Ylang-ylang oil composition ; Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Samples of essential oil from Colombian ylang-ylang trees were analyzed by means of HRGC, HRGC-MS, IR and 1H- and 13C-NMR. 57 components were detected, 51 of which were positively identified. Camphene and anethol were identified in ylang-ylang essential oil for the first time. Among the composition-determining variables studied (extraction time, part of the flower, and flower freshness), the extraction time and the flower condition (fresh versus dry) were found to have the largest incidence in the quality of the essential oil.

Additional Material: 3 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/jhrc.1240160713

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Catalytic transformation of anise (Pimpinella anisum L.) oil over zeolite Y (1995)

Stashenko, Elena E. ; Martinez, César Roberto ; Martinez, Jairo René ; [et al.]

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 18 (1995), S. 501-503

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ISSN: 0935-6304

Keywords: High resolution GC-MS ; Mass spectrometry ; Anise oil ; Catalytic transformation ; Zeolite Y ; Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Additional Material: 2 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/jhrc.1240180810

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