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Papers by gebran nassif

Research paper thumbnail of Sustainable Harvesting and Management of Medicinal Plants

Research paper thumbnail of Impact of cultivation and gathering of medicinal plants on biodiversity: global trends and issues

Research paper thumbnail of New method for quantitative essential oil analysis

Journal of Chromatography A, Jan 1, 1981

Research paper thumbnail of Solvent-free microwave extraction of essential oil from aromatic herbs: comparison with conventional hydro-distillation

Journal of Chromatography A, Jan 1, 2004

Research paper thumbnail of Comparison of different extraction methods for the analysis of volatile secondary metabolites of Lippia alba (Mill.) NE Brown, grown in Colombia, and evaluation of its …

Journal of Chromatography A, Jan 1, 2004

Research paper thumbnail of Volatile oil crops: their biology, biochemistry and production.

Research paper thumbnail of Characterization of additional volatile components of tomato

Journal of Agricultural …, Jan 1, 1971

... Isolation of Vacuum Steam Volatile Oil. Two principal methods were used. (1) The tomatoes (4.... more ... Isolation of Vacuum Steam Volatile Oil. Two principal methods were used. (1) The tomatoes (4.5 kg) were cut into quarters, mixed with 3 1. of distilled water, and treated in a vacuum steam distillation continuous extraction apparatus (Nickerson and Likens, 1966; Buttery et a ...

Research paper thumbnail of Supercritical fluid extraction in plant essential and volatile oil analysis

Journal of Chromatography A, Jan 1, 2007

Research paper thumbnail of Genetic diversity of Ocimum gratissimum L. based on volatile oil constituents, flavonoids and RAPD markers

Biochemical Systematics and …, Jan 1, 2001

Research paper thumbnail of Apparatus for the determination of volatile oil

Journal of the American Pharmaceutical …, Jan 1, 1928

... possibly minimum boiling point. It permits in most cases a direct quantitative determination ... more ... possibly minimum boiling point. It permits in most cases a direct quantitative determination of the volatile oil of most plant products without preliminary extraction with ether or other solvents. APPARATUS. The apparatus (Figs. ...

Research paper thumbnail of Supercritical carbon dioxide extraction of volatile oil from Italian coriander seeds

Food Chemistry, Jan 1, 2008

Research paper thumbnail of Influence of Extraction Method and Storage Conditions on the Volatile Oil of Wormwood (Artemisia Absinthium L.)

European Food Research …, Jan 1, 1999

Research paper thumbnail of Rose hip (Rosa canina L.) oil obtained from waste hip seeds by different extraction methods

Bioresource …, Jan 1, 2002

Research paper thumbnail of Effect of different extraction methods on fatty acids, volatile compounds, and physical and chemical properties of avocado (Persea americana Mill.) oil

Journal of agricultural …, Jan 1, 2003

Because Mexico is the number one producer of avocados in the world, this fruit has potential as a... more Because Mexico is the number one producer of avocados in the world, this fruit has potential as a source for oil extraction. It is appropriate to further investigate the detailed changes that the oil undergoes when different extraction methods are applied. This research paper presents the study of the physical and chemical changes, the fatty acids profile, the trans fatty acid content, and the identification of volatile compounds of the oils from avocado pulp (Persea americana Mill.), obtained by four different extraction methods. The method with the greatest extraction yield was the combined microwave-hexane method. The amount of trans fatty acids produced in the microwave-squeezing treatment was <0.5 g/100 g. On the other hand, the amounts of trans fatty acids produced with the hexane and acetone treatments were 0.52 and 0.87 g/100 g, respectively. The method that caused the slightest modification to the oil quality was a novel combined extraction method of microwave-squeezing proposed by the authors.

Research paper thumbnail of Sustainable Harvesting and Management of Medicinal Plants

Research paper thumbnail of Impact of cultivation and gathering of medicinal plants on biodiversity: global trends and issues

Research paper thumbnail of New method for quantitative essential oil analysis

Journal of Chromatography A, Jan 1, 1981

Research paper thumbnail of Solvent-free microwave extraction of essential oil from aromatic herbs: comparison with conventional hydro-distillation

Journal of Chromatography A, Jan 1, 2004

Research paper thumbnail of Comparison of different extraction methods for the analysis of volatile secondary metabolites of Lippia alba (Mill.) NE Brown, grown in Colombia, and evaluation of its …

Journal of Chromatography A, Jan 1, 2004

Research paper thumbnail of Volatile oil crops: their biology, biochemistry and production.

Research paper thumbnail of Characterization of additional volatile components of tomato

Journal of Agricultural …, Jan 1, 1971

... Isolation of Vacuum Steam Volatile Oil. Two principal methods were used. (1) The tomatoes (4.... more ... Isolation of Vacuum Steam Volatile Oil. Two principal methods were used. (1) The tomatoes (4.5 kg) were cut into quarters, mixed with 3 1. of distilled water, and treated in a vacuum steam distillation continuous extraction apparatus (Nickerson and Likens, 1966; Buttery et a ...

Research paper thumbnail of Supercritical fluid extraction in plant essential and volatile oil analysis

Journal of Chromatography A, Jan 1, 2007

Research paper thumbnail of Genetic diversity of Ocimum gratissimum L. based on volatile oil constituents, flavonoids and RAPD markers

Biochemical Systematics and …, Jan 1, 2001

Research paper thumbnail of Apparatus for the determination of volatile oil

Journal of the American Pharmaceutical …, Jan 1, 1928

... possibly minimum boiling point. It permits in most cases a direct quantitative determination ... more ... possibly minimum boiling point. It permits in most cases a direct quantitative determination of the volatile oil of most plant products without preliminary extraction with ether or other solvents. APPARATUS. The apparatus (Figs. ...

Research paper thumbnail of Supercritical carbon dioxide extraction of volatile oil from Italian coriander seeds

Food Chemistry, Jan 1, 2008

Research paper thumbnail of Influence of Extraction Method and Storage Conditions on the Volatile Oil of Wormwood (Artemisia Absinthium L.)

European Food Research …, Jan 1, 1999

Research paper thumbnail of Rose hip (Rosa canina L.) oil obtained from waste hip seeds by different extraction methods

Bioresource …, Jan 1, 2002

Research paper thumbnail of Effect of different extraction methods on fatty acids, volatile compounds, and physical and chemical properties of avocado (Persea americana Mill.) oil

Journal of agricultural …, Jan 1, 2003

Because Mexico is the number one producer of avocados in the world, this fruit has potential as a... more Because Mexico is the number one producer of avocados in the world, this fruit has potential as a source for oil extraction. It is appropriate to further investigate the detailed changes that the oil undergoes when different extraction methods are applied. This research paper presents the study of the physical and chemical changes, the fatty acids profile, the trans fatty acid content, and the identification of volatile compounds of the oils from avocado pulp (Persea americana Mill.), obtained by four different extraction methods. The method with the greatest extraction yield was the combined microwave-hexane method. The amount of trans fatty acids produced in the microwave-squeezing treatment was <0.5 g/100 g. On the other hand, the amounts of trans fatty acids produced with the hexane and acetone treatments were 0.52 and 0.87 g/100 g, respectively. The method that caused the slightest modification to the oil quality was a novel combined extraction method of microwave-squeezing proposed by the authors.

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