Methods of isolation and identification of volatile compounds in lipids

1967 ◽  
Vol 44 (1) ◽  
pp. 26-29 ◽  
Author(s):  
Pio Angelini ◽  
D. A. Forss ◽  
M. L. Bazinet ◽  
Charles Merritt
Keyword(s):  
Volatile Compounds ◽  
Isolation And Identification ◽  
Methods Of Isolation

Erratum to: Methods of isolation and identification of volatile compounds in lipids

1967 ◽  
Vol 44 (4) ◽  
pp. 274-274
Author(s):  
Pio Angelini ◽  
D. A. Forss ◽  
M. L. Bazinet ◽  
Charles Merritt
Keyword(s):  
Volatile Compounds ◽  
Isolation And Identification ◽  
Methods Of Isolation

scholarly journals THE CULTIVATION OF ANAEROBIC TREPONEMATA ON THE SURFACE OF BLOOD AGAR PLATES

1923 ◽  
Vol 37 (3) ◽  
pp. 311-317 ◽  
Author(s):  
Frederick L. Gates
Keyword(s):  
Colony Formation ◽  
Treponema Pallidum ◽  
Blood Agar ◽  
Characteristic Surface ◽  
Isolation And Identification ◽  
New Methods ◽  
Foreign Proteins ◽  
Methods Of Isolation ◽  
The Way

By a method of cultivation that proved successful with Bacterium pneumosintes, characteristic surface colonies of old saprophytic strains of Treponema pallidum and Treponema calligyrum have been obtained. The presence of two types of colony in the pallidum cultures requires explanation, but the fact of colony formation may point the way to new methods of isolation and identification and to the utilization of suspensions of treponemata, free from foreign proteins, for serological and immunological purposes.

Isolation and identification of volatile compounds from fried chicken

1983 ◽  
Vol 31 (6) ◽  
pp. 1287-1292 ◽  
Author(s):  
Jian Tang ◽  
Qi Zhang Jin ◽  
Guo Hui Shen ◽  
Chi Tang Ho ◽  
Stephen S. Chang
Keyword(s):  
Volatile Compounds ◽  
Isolation And Identification

scholarly journals PHYTOCHEMICAL CONSTITUENTS, PHENOLIC CONTENTS, AND ANTIOXIDANT ACTIVITY OF CRATAEGUS AZAROLUS EXTRACTS

2018 ◽  
Vol 11 (4) ◽  
pp. 133 ◽  
Author(s):  
Boudjada Amina ◽  
Touil Ahmed ◽  
Bendif Hamdi ◽  
Bensouici Chawki ◽  
Rhouati Salah
Keyword(s):  
Antioxidant Activity ◽  
Volatile Compounds ◽  
Silica Gel ◽  
Antioxidant Activities ◽  
Total Phenolic ◽  
Isolation And Identification ◽  
Phenolic Contents ◽  
Butanol Extract ◽  
Chcl3 Extract ◽  
1H Nuclear Magnetic Resonance

 Objective: The aim of this study was the isolation and identification of secondary metabolites from Crataegus azarolus (L.) and the antioxidant evaluation of its extracts and compounds.Methods: The air-dried powdered parts of the plant were extracted with 70% methanol and fractionated by chloroform, ethyl acetate, and n-butanol. The n-butanol extract was separated using polyamide SC6 column and silica gel TLC. In addition, a fraction of silica gel column of the CHCl3 extract was analyzed by gas chromatography–mass spectrometer (GC–MS). The total phenolic and total flavonoid contents of CHCl3 and n-butanol extracts were estimated. Furthermore, the antioxidant activities of CHCl3, n-butanol extracts, and two flavonoids were evaluated according to five different methods.Results: Eight compounds were identified in CHCl3 and n-butanol extracts, among them, five volatile compounds identified by GC–MS for the 1st time from the species, as well as three known flavonol glycosides identified by spectral analysis (ultraviolet,1H-nuclear magnetic resonance [NMR], and13C-NMR) and by comparison with literature data. The n-butanol extract showed the higher content of polyphenols (307.33 ± 2.33 mg (gallic acid equivalents)/g extract) and flavonoids (143.0 ± 2.12 mg QE/g extract) and it proves the highest antioxidant activity with all assays used.Conclusion: Five volatile compounds were identified for the 1st time from the C. azarolus and the antioxidant potential of plant extracts was measured using five different methods.

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