Details

Autor(en) / Beteiligte

• Serrano, Núria
• Cetó, Xavier
• Núñez, Oscar
• Aragó, Miriam
• Gámez, Alejandro
• Ariño, Cristina
• Díaz-Cruz, José Manuel

Titel

Characterization and classification of Spanish paprika (Capsicum annuum L.) by liquid chromatography coupled to electrochemical detection with screen-printed carbon-based nanomaterials electrodes

Ist Teil von

• Talanta (Oxford), 2018-11, Vol.189, p.296-301

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2018

Quelle

Elsevier ScienceDirect Journals

Beschreibungen/Notizen

• Screen-printed electrodes based on graphite, carbon nanotubes, carbon nanofibers, and graphene were tested as amperometric detectors for the determination of phenolic compounds by high performance liquid chromatography (HPLC). The chromatographic performance as well as the obtained sensitivity, detection and quantification limits suggest that carbon nanofibers modified screen-printed electrode (SPCE-CNF) is the amperometric sensor that provides the best analytical performance. Upon this confirmation, chromatographic data obtained using SPCE-CNF were exploited by means of linear discriminant analysis (LDA) to successfully characterize and classify 96 Spanish paprika (Capsicum annuum L.) samples with different origin and type: from La Vera (including sweet, bittersweet and spicy types) and from Murcia (including sweet and spicy types). [Display omitted] •Different carbon-based SPEs are used for the determination of phenolic compounds by HPLC-EC.•Better chromatographic and analytical performance are achieved when using SPCE-CNF.•LODs for the 17 considered phenolic compounds are in the 0.1–14.6 mg L−1 range.•Discrimination of Spanish paprika samples is fully achieved by HPLC-EC coupled to LDA.•Classification of paprika according to its origin (PDO) and type.