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Screening and Profiling of Hydrocarbon Components and Squalene in Developing Tunisian Cultivars and Wild Arachis hypogaea L. Species

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Journal of the American Oil Chemists' Society

Abstract

Total hydrocarbon composition and content of whole peanuts from three Tunisian varieties of peanut (two cultivars: AraC (Virginia type), AraT (Valencia type) and a wild one: AraA) were investigated during maturation. The results show that 30 hydrocarbons were identified from the wild AraA species, while only 27 hydrocarbon were detected in the cultivar ones. The hydrocarbon fraction is essentially composed of squalene, n-alkenes especially nC14=, nC16=, nC18=, nC20= and nC22=, n-alkanes such as nC16, nC17, nC18, nC25, nC26 and nC27, and branched saturated hydrocarbon noted (HC1, HC2 and HC3). Among the hydrocarbon components, generally the wild variety AraA presents the highest content of phytochemical squalene during maturation, whereas a maximum was detected from cultivar AraT at 12 days after podding (815.45 mg/100 g of oil). At maturity, the maximum level is reached at about 346.74 mg/100 g of oil for AraA. During maturity, wild AraA is considered to be an excellent source of squalene like olive and pumpkin oil.

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Abbreviations

AraA:

Arachis Arbi (wild)

AraC:

Arachis Chounfakhi (cultivar)

AraT:

Arachis Trabelsia (cultivar)

BUHC:

Branched unsaturated hydrocarbon

BSHC:

Branched saturated hydrocarbon

DAP:

Days after podding

GC-FID:

Gas chromatography- flame ionization detector

GC/MS:

Gas chromatography-mass spectrometry

HC:

Hydrocarbon

HMW:

High molecular weight

IS:

Immature stage

LUHC:

Linear unsaturated hydrocarbon

M:

Maturity

MIS:

Middle stage

SHC:

Saturated hydrocarbon or n-alkanes

UHC:

Unsaturated hydrocarbon or n-alkenes

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Acknowledgments

The authors would like to thank Mr. M. El Chikh (Hammam el Ghezaz, Tunisia) for his technical assistance in conducting the culture of the peanuts.

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Correspondence to Aïcha O. Cherif.

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Cherif, A.O., Ben Messaouda, M., Pellerin, I. et al. Screening and Profiling of Hydrocarbon Components and Squalene in Developing Tunisian Cultivars and Wild Arachis hypogaea L. Species. J Am Oil Chem Soc 90, 675–686 (2013). https://doi.org/10.1007/s11746-013-2212-5

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  • DOI: https://doi.org/10.1007/s11746-013-2212-5

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