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Destructive and optical non-destructive grape ripening assessment: Agronomic comparison and cost-benefit analysis
Reliability and economic assessment of the Multiplex(®) optical sensor employed for non-destructive grape parameters estimates was evaluated in 2017 against a wet chemistry approach in mature vineyards including five cultivars (two whites, two red and one pink colored) assuring a broad range of vari...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6541254/ https://www.ncbi.nlm.nih.gov/pubmed/31141501 http://dx.doi.org/10.1371/journal.pone.0216421 |
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author | Savi, Sara Poni, Stefano Moncalvo, Alessandro Frioni, Tommaso Rodschinka, Irene Arata, Linda Gatti, Matteo |
author_facet | Savi, Sara Poni, Stefano Moncalvo, Alessandro Frioni, Tommaso Rodschinka, Irene Arata, Linda Gatti, Matteo |
author_sort | Savi, Sara |
collection | PubMed |
description | Reliability and economic assessment of the Multiplex(®) optical sensor employed for non-destructive grape parameters estimates was evaluated in 2017 against a wet chemistry approach in mature vineyards including five cultivars (two whites, two red and one pink colored) assuring a broad range of variation in both technological and phenolic maturity parameters. Among the five Multiplex (Mx) indices evaluated (SFR_R, FLAV, FLAV-UV, ANTH_RG and FERARI) in all cultivars with the exception of Barbera SFR_R showed a significant and linear correlation with total soluble solids (TSS) for TSS ≥ 10 °Brix. Conversely, no significant correlation was found between FLAV and total flavonols concentration, whereas a significant linear correlation was found in Barbera (R(2) = 0.66) and Ervi (R(2) = 0.63) when the FLAV index was replaced with the FLAV_UV index. Within each cultivar, both ANTH_RG and FERARI showed close correlations with total anthocyanins concentration determined by wet chemistry although under different model shapes. Expressing berry color accumulation on a per skin mass basis rather than for whole berry mass basis, allowed for better separation of behavior of single cultivars and improved accuracy of model fitting for the combination of Barbera and ANTH_RG. A strict linear correlation was always found, within each index, for Mx readings taken on the two opposite sides of the same cluster, implying no significant within-cluster differences in sugar, color and flavonol concentrations. Economic assessment of Mx by means of the Net Present Value (NPV) approach showed that Mx is economically viable for a two hectare vineyard cultivating three red grape varieties (90 samples per year) if its lifetime is at least 7 years. Conversely, if only two red varieties are grown Mx should be used at least 11 years to make it economic suitable. Bigger properties growing a higher number of red varieties are the more interested in Mx as the expected NPV assumes positive values with a Mx usage of minimum 3 years. |
format | Online Article Text |
id | pubmed-6541254 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-65412542019-06-05 Destructive and optical non-destructive grape ripening assessment: Agronomic comparison and cost-benefit analysis Savi, Sara Poni, Stefano Moncalvo, Alessandro Frioni, Tommaso Rodschinka, Irene Arata, Linda Gatti, Matteo PLoS One Research Article Reliability and economic assessment of the Multiplex(®) optical sensor employed for non-destructive grape parameters estimates was evaluated in 2017 against a wet chemistry approach in mature vineyards including five cultivars (two whites, two red and one pink colored) assuring a broad range of variation in both technological and phenolic maturity parameters. Among the five Multiplex (Mx) indices evaluated (SFR_R, FLAV, FLAV-UV, ANTH_RG and FERARI) in all cultivars with the exception of Barbera SFR_R showed a significant and linear correlation with total soluble solids (TSS) for TSS ≥ 10 °Brix. Conversely, no significant correlation was found between FLAV and total flavonols concentration, whereas a significant linear correlation was found in Barbera (R(2) = 0.66) and Ervi (R(2) = 0.63) when the FLAV index was replaced with the FLAV_UV index. Within each cultivar, both ANTH_RG and FERARI showed close correlations with total anthocyanins concentration determined by wet chemistry although under different model shapes. Expressing berry color accumulation on a per skin mass basis rather than for whole berry mass basis, allowed for better separation of behavior of single cultivars and improved accuracy of model fitting for the combination of Barbera and ANTH_RG. A strict linear correlation was always found, within each index, for Mx readings taken on the two opposite sides of the same cluster, implying no significant within-cluster differences in sugar, color and flavonol concentrations. Economic assessment of Mx by means of the Net Present Value (NPV) approach showed that Mx is economically viable for a two hectare vineyard cultivating three red grape varieties (90 samples per year) if its lifetime is at least 7 years. Conversely, if only two red varieties are grown Mx should be used at least 11 years to make it economic suitable. Bigger properties growing a higher number of red varieties are the more interested in Mx as the expected NPV assumes positive values with a Mx usage of minimum 3 years. Public Library of Science 2019-05-29 /pmc/articles/PMC6541254/ /pubmed/31141501 http://dx.doi.org/10.1371/journal.pone.0216421 Text en © 2019 Savi et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Savi, Sara Poni, Stefano Moncalvo, Alessandro Frioni, Tommaso Rodschinka, Irene Arata, Linda Gatti, Matteo Destructive and optical non-destructive grape ripening assessment: Agronomic comparison and cost-benefit analysis |
title | Destructive and optical non-destructive grape ripening assessment: Agronomic comparison and cost-benefit analysis |
title_full | Destructive and optical non-destructive grape ripening assessment: Agronomic comparison and cost-benefit analysis |
title_fullStr | Destructive and optical non-destructive grape ripening assessment: Agronomic comparison and cost-benefit analysis |
title_full_unstemmed | Destructive and optical non-destructive grape ripening assessment: Agronomic comparison and cost-benefit analysis |
title_short | Destructive and optical non-destructive grape ripening assessment: Agronomic comparison and cost-benefit analysis |
title_sort | destructive and optical non-destructive grape ripening assessment: agronomic comparison and cost-benefit analysis |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6541254/ https://www.ncbi.nlm.nih.gov/pubmed/31141501 http://dx.doi.org/10.1371/journal.pone.0216421 |
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