Antioxidant activity, color, carotenoids composition, minerals, vitamin C and sensory quality of organic and conventional mandarin juice, cv. orogrande

  • Navarro P
  • Pérez-López A
  • Mercader M
 et al. 
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Abstract

The effects of organic farming on antioxidant activity, CIE L*a*b* color, carotenoids composition, minerals contents, vitamin C and sensory quality of Orogrande mandarin juices were studied. Independent of the farming type, mandarin juices can be considered as good source of some important nutrients, such as potassium and antioxidant chemicals, for example, β-cryptoxanthin. Organic farming of mandarin resulted in juices with higher antioxidant activity, total carotenoids concentrations, minerals (Ca, K and Fe) contents, vitamin C content, more appealing and intense orange color and better sensory quality. For instance, organic Orogrande juice contained significantly (p < 0.001) higher total carotenoids content (22.7 ± 0.3 mg/L) than conventional juice (15.7 ± 0.4 mg/L); a similar pattern was observed for the antioxidant activity, with values being 0.076±0.004 and 0.053 ± 0.003 mM Trolox m/L in organic and conventional juices, respectively. A trained panel stated that organic Orogrande juices had higher intensities of orange color, fresh mandarin and floral aromas than conventional juices.

Author-supplied keywords

  • Orogrande
  • juices
  • mandarins
  • organic farming
  • sensory evaluation
  • β-cryptoxanthin

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Authors

  • Jose GabaldonUniversidad Catolica San Antonio de Murcia Facultad de Ciencias de la Salud

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  • P. Navarro

  • A. J. Pérez-López

  • M. T. Mercader

  • A. A. Carbonell-Barrachina

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