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Separation and identification of pigments in tomato residue

    Authors

    • Abdulmajeeed H. Al
    • Saoud R. Al
    • T. Al
,
10.32649/ajas.2013.88179
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Abstract

Carotenoids of dry tomato residues were extracted by two systems of solvent
namely acetone - petroleum ether (b . p. 40 – 60 °C)(System 1) and acetone – hexane – ethanol (1 : 2 : 1) (System 2) . The pigments in extracts were identified by HPLC technique . From the 17 pigments identified , lycopene was the major .
System 2 gave higher percentage of lycopene (80.9 %) as compared with system 1 which gave 39.6 % . Formation of 37.7% of lycopene diepoxide might be the reason for the reduced percentage of lycopene when System 1 was used . β – Carotene was extracted effeceintly (2.51%) by system 2 , while the percentage decreased to 1.7% when using System 1 due to oxidation which produse 1.8% of β – Carotene diepoxide. On the contrary Lycoxanthin was efficiently extracted by system 1 (8%) rather than system 2 (2.1%) . Cis – isomers , mainly Cis – Lycopen – 1 was extracted by both systems (6.6 and 9.6% respectively). The appearance of these isomers may be due to exposure to light with oxygen

Keywords

  • Separation and identification
  • of pigments in tomato residue
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ANBAR JOURNAL OF AGRICULTURAL SCIENCES
Volume 11, Issue 2
December 2013
Page 390-399
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APA

Nahla, , samarraie, , H. Al, A., sheekly, , R. Al, S., Al, T., & aini, (2013). Separation and identification of pigments in tomato residue. ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 11(2), 390-399. doi: 10.32649/ajas.2013.88179

MLA

Nahla; samarraie; Abdulmajeeed H. Al; sheekly; Saoud R. Al; T. Al; aini. "Separation and identification of pigments in tomato residue". ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 11, 2, 2013, 390-399. doi: 10.32649/ajas.2013.88179

HARVARD

Nahla, , samarraie, , H. Al, A., sheekly, , R. Al, S., Al, T., aini, (2013). 'Separation and identification of pigments in tomato residue', ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 11(2), pp. 390-399. doi: 10.32649/ajas.2013.88179

VANCOUVER

Nahla, , samarraie, , H. Al, A., sheekly, , R. Al, S., Al, T., aini, Separation and identification of pigments in tomato residue. ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2013; 11(2): 390-399. doi: 10.32649/ajas.2013.88179

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