African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6860

Full Length Research Paper

Effects of planting location and storage time on lipids and fatty acids contents of some Madagascan rice varieties

Rasoazanakolona Voahanginirina  and Rafidinarivo Elie
  1Département de Recherches Technologiques, Centre National de Recherche Appliquée auDéveloppement Rural, BP 1690 Antananarivo 101, Madagascar. 2Institut Supérieur de Technologie d’Antananarivo, BP 8122, Antananarivo 101, Madagascar.
Email: [email protected]

  •  Accepted: 15 May 2007
  •  Published: 31 August 2007

Abstract

 

Lipid  and  fatty  acid  composition  of  some  Madagascan  rice  varieties  were  analysed by  both  Soxhlet method and Gas Chromatography based on variety, planting locationand the storage time of rice grain. The  results  showed  that  there  was  a  significant variety  effect.  This  work  also  highlighted  an  agro- ecological  site  influence  on  the lipid  content,  the oleic and arachidic acids.  Finally, fatty  acid  composition  of Madagascan rice obeyed Keys‘s rule few time (14 days and  30 days) after harvest andafter one year of storage  for  one   variety  out  of  three.  Keys’s  rule  was  related  to variety,  to  site  and  to  storage  time. Mono- and polyunsaturated fatty acids weresignificantly influenced by storage time.

 

Key words: Lipid, fatty acids, Madagascan  rice, site, storage time.

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