title: Determination of polyphenolic profile, antioxidant activity and antibacterial properties of maqui [Aristotelia chilensis (Molina) Stuntz] a Chilean blackberry.
abstract: BACKGROUND
  The aim of the present study was to determine (1) the polyphenolic profile (phenolic acids, flavonoids and anthocyanins), (2) the antioxidant using four different methodologies (DPPH, ABTS, FRAP and FIC) and (3) the antibacterial properties of maqui berry [Aristotelia chilensis (Molina) Stuntz] (MB) grown in Chile.
  
  
  RESULTS
  The HPLC analysis of MB showed a total of 19 polyphenolic compounds identified as anthocyanins (eight compounds), flavonols (10 compounds) and ellagic acid. Delphinidin derivatives were the predominant anthocyanins while quercetin derivatives were the predominant flavonols. MB showed an antioxidant activity measured with DPPH, ABTS, FRAP and FIC methods of 28.18, 18.66, 25.22 g Trolox equivalent kg(-1) and 0.12 g ethylenediaminetetraacetic acid equivalent kg(-1) , respectively. With regard to the antibacterial activity, all strains tested were affected by MB. Aeromonas hydrophila and Listeria innocua showed the highest sensitivity to maqui berry extracts with MIC values of 40 and a 50 mg mL(-1) , respectively.
  
  
  CONCLUSIONS
  The results suggest that maqui berry has a great potential to be employed in the food industry as potential food ingredient to functional food development or as bio-preservative. © 2016 Society of Chemical Industry.
authors.affiliation: Universidad de Chile, Departamento de Ciencia de los Alimentos y Tecnología Química, Santos Dumont N° 964, Independencia, Santiago, Chile.
authors.forename: Estefania
authors.initials: E
authors.lastname: Genskowsky
authors.affiliation: Universidad de Chile, Departamento de Ciencia de los Alimentos y Tecnología Química, Santos Dumont N° 964, Independencia, Santiago, Chile.
authors.forename: Luis A
authors.initials: LA
authors.lastname: Puente
authors.affiliation: IPOA Research Group (UMH-1 and REVIV-Generalitat Valenciana), Agro-Food Technology Department, Escuela Politécnica Superior de Orihuela, Miguel Hernández University, Orihuela, Alicante, Spain.
authors.forename: José A
authors.initials: JA
authors.lastname: Pérez-Álvarez
authors.affiliation: IPOA Research Group (UMH-1 and REVIV-Generalitat Valenciana), Agro-Food Technology Department, Escuela Politécnica Superior de Orihuela, Miguel Hernández University, Orihuela, Alicante, Spain.
authors.forename: Juana
authors.initials: J
authors.lastname: Fernández-López
authors.affiliation: Pontificia Universidad Católica de Chile, Departamento de Ingeniería Química y Bioprocesos, Facultad de Ingeniería, 7820436, Santiago, Chile.
authors.forename: Loreto A
authors.initials: LA
authors.lastname: Muñoz
authors.affiliation: IPOA Research Group (UMH-1 and REVIV-Generalitat Valenciana), Agro-Food Technology Department, Escuela Politécnica Superior de Orihuela, Miguel Hernández University, Orihuela, Alicante, Spain.
authors.forename: Manuel
authors.initials: M
authors.lastname: Viuda-Martos
mesh_terms: D000872:Anthocyanins / Q000032:analysis / Q000494:pharmacology; D000900:Anti-Bacterial Agents / Q000032:analysis* / Q000494:pharmacology; D000975:Antioxidants / Q000032:analysis* / Q000494:pharmacology; D002677:Chile; D002851:Chromatography, High Pressure Liquid; D045467:Elaeocarpaceae / Q000737:chemistry*; D044948:Flavonols / Q000032:analysis / Q000494:pharmacology; D016166:Free Radical Scavengers / Q000032:analysis / Q000494:pharmacology; D005638:Fruit / Q000737:chemistry; D008826:Microbial Sensitivity Tests; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology; D059808:Polyphenols / Q000032:analysis* / Q000494:pharmacology
chemical_list: D000872:Anthocyanins; D000900:Anti-Bacterial Agents; D000975:Antioxidants; D044948:Flavonols; D016166:Free Radical Scavengers; D010936:Plant Extracts; D059808:Polyphenols
keywords: antibacterial; antioxidant activity; maqui berry; polyphenolic profile