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Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
Effect of Organic and Conventional Production Methods on Fruit Yield and Nutritional Quality Parameters in Three Traditional Cretan Grape Varieties: Results from a Farm Survey
Foods, Vol.10(2), pp.1-20
22/02/2021
PMCID: PMC7926479
PMID: 33671741
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Abstract
The antioxidants found in grapes and wine have been linked to health benefits in humans, but may be affected by agronomic parameters, grape type/variety, and processing. Here, we report results of a farm survey which investigated the effects of production system (organic vs. conventional) and grape variety on fruit yield, total antioxidant activity/capacity (TAA, assessed by the Trolox Equivalent Antioxidant Capacity (TEAC) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assays), and total concentrations of total phenolics (TPC) and anthocyanins (TAC) in grapes of one red (Kotsifali) and two white (Villana and/or Vidiano) traditional Cretan grape varieties. Analysis of variance (ANOVA) results showed that grape variety choice had a more substantial effect on TPC, TAA, and TAC than primary production protocols, and significant interactions were identified between production system and grape variety choice for TAATEAC. Specifically, TAATEAC was significantly (57%) higher in organic than conventional Vidiano grapes, while there was no significant effect of production system on TAATEAC in Kotsifali and Villana grapes. As expected from previous studies, the TAC was substantially higher in red Kotsifali grapes. Redundancy analysis (RDA) identified grape variety as the only strong explanatory variable/driver for yield, TPC, TAA, and TAC of table grapes, and positive associations were detected between the variety Vidiano and both TPC and TAATEAC. All other explanatory variables included in the RDA (including supplementary irrigation, orchard orientation, production system, soil type, vineyard age, plant density, and fertiliser inputs) explained only a small proportion of the additional variation.
Details
- Title
- Effect of Organic and Conventional Production Methods on Fruit Yield and Nutritional Quality Parameters in Three Traditional Cretan Grape Varieties: Results from a Farm Survey
- Creators
- Gulatikin Hasanaliyeva - Università Cattolica del Sacro CuoreEleni Chatzidimitrou - Newcastle UniversityJuan Wang - Newcastle UniversityMarcin Baranski - Warsaw UniversityNikolaos Volakakis - Newcastle UniversityPanagiotis Pakos - Newcastle UniversityChris Seal - Newcastle UniversityEduardo AS Rosa - University of Trás-os-Montes and Alto DouroEmilia Markellou - Benaki Phytopathological InstitutePer Ole Iversen - University of OsloVanessa Vigar - Southern Cross UniversityAdam Willson - Southern Cross UniversityBronwyn Barkla - Southern Cross UniversityCarlo Leifert - Southern Cross UniversityLeonidas Rempelos - University of Newcastle
- Publication Details
- Foods, Vol.10(2), pp.1-20
- Publisher
- MDPI AG
- Grant note
- This work was supported by the Azerbaijan Ministry of Education, the Sheepdrove Trust, and the EU FP6 project QLIF (Grant number: 506-358).
- Identifiers
- 991013054664902368
- Copyright
- © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
- Academic Unit
- Office of Deputy Vice Chancellor, Research; Faculty of Science and Engineering; Science
- Language
- English
- Resource Type
- Journal article