African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6578

Full Length Research Paper

Elucidation of the betalainic chromoalkaloid profile of Pilosocereus catingicola (Gürke) Byles & Rowley subsp. salvadorensis (Werderm.) Zappi (Cactaceae) from Paraíba, Brazil

Alex da Silva Barbosa
  • Alex da Silva Barbosa
  • Graduate Program in Agronomy, Universidade Federal da Paraíba, Areia, PB, 58397 000 Brazil.
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Jason Q. D. Goodger
  • Jason Q. D. Goodger
  • School of Biosciences, the University of Melbourne, VIC, 3100 Australia.
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Ian E. Woodrow
  • Ian E. Woodrow
  • School of Biosciences, the University of Melbourne, VIC, 3100 Australia.
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Albericio Pereira de Andrade
  • Albericio Pereira de Andrade
  • Graduate Program in Agronomy, Universidade Federal da Paraíba, Areia, PB, 58397 000 Brazil.
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Riselane de Lucena Alcantara Bruno
  • Riselane de Lucena Alcantara Bruno
  • Graduate Program in Agronomy, Universidade Federal da Paraíba, Areia, PB, 58397 000 Brazil.
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Italo de Souza Aquino
  • Italo de Souza Aquino
  • Graduate Program in Agronomy, Universidade Federal da Paraíba, Areia, PB, 58397 000 Brazil.
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  •  Received: 21 March 2016
  •  Accepted: 03 January 2017
  •  Published: 06 April 2017

Abstract

The cacti are important plant genetic resources of the Brazilian semiarid region, with potential for the extraction of bioactive compounds such as flavonoids and alkaloids. The objective of this research was to characterize and quantify the chemical constituents of Pilosocereus catingicola (Gürke) Byles & Rowley subsp. salvadorensis (Werderm.) Zappi occurring in caatinga in the Westland of Paraíba, Brazil. We collected roots, stems and fruit of plants growing in populations at Arara, Areial and Boa Vista. Chemical characterization of the different plant tissues showed that roots and stems of P. catingicola contained steroids, flavonoids and saponins whereas fruit was dominated by high levels of betalainic chromoalkaloids (betalains). Tests performed to optimize extraction of betalains from P. catingicola fruit showed highest yields were from freeze-dried nuts extracted for 95 min, with the crude extract stored at -20°C for a maximum of 48 h. The betalains of all fruit samples were dominated by betacyanins with much lower amounts of betaxanthins observed in each population. Numerous betacyanin constituents were detected in fruit extracts, with the key constituents identified as betanin and phyllocactin. The Arara population yielded relatively more betaxanthins compared to plants from the Areial and Boa Vista regions.

 

Key words: Betacyanin, betanin, betaxanthin, caatinga, cactus, facheiro, phyllocactin.