Influence of regulated deficit irrigation and rootstock on the functional, nutritional and sensory quality of pistachio nuts

Luis Noguera-Artiaga, Paola Sánchez-Bravo, Francisca Hernández, Armando Burgos-Hernández, David Pérez-López, Ángel A. Carbonell-Barrachina*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

The aim of this study was to determine the influence of rootstock and regulated deficit irrigation (RDI) on pistachio nuts, by studying their size, weight, color, fatty acids (gas chromatography with mass spectrometer detector), minerals (atomic absorption), total polyphenol content (TPC), antioxidant activity (ABTS, FRAP, and DPPH), and sensory properties (trained panel). Three rootstocks (P. atlantica, P. integerrima, and P. terebinthus) and three irrigation treatments (T0: fully irrigation, 100 % ETc; T1: during phenological phase II the stem water potential, SWP, was maintained around −1.5 MPa; and T2: during phase II, SWP < −2.0 MPa) were used. Pistachios obtained from P. terebinthus had the highest size, weight and oleic acid content (main fatty acid), while P. integerrima nuts had the best sensory profile. The use of moderate RDI (T1) led to pistachio nuts with higher weight, smaller size, similar fatty acid profile, higher TPC (1284 and 1192 g GAE kg−1 dry weigh, respectively), and similar (no statistically differences) antioxidant activity (AA) and sensory profile than control samples. Thus, moderate RDI produces nuts with a good functional quality (high values of TPC and AA), without affecting their sensory quality, but being environmental friendly and having reduced economic cost due to a lower use of irrigation water.

Original languageEnglish
Article number108994
JournalScientia Horticulturae
Volume261
DOIs
StatePublished - 5 Feb 2020

Bibliographical note

Publisher Copyright:
© 2019 Elsevier B.V.

Keywords

  • Antioxidant activity
  • Fatty acid methyl esters
  • hydroSOS
  • Pistacia vera
  • Total polyphenol content

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