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IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Physico-chemical properties of vine pruning residues with potential as enological additive

Physico-chemical properties of vine pruning residues with potential as enological additive

Abstract

Grapes are one of the world’s primary fruit crops, and pruning activities generate high amounts of annual wood wastes [1]. These pruning shoots contain valuable phenolic compounds and could have numerous potential applications [1,2]. Consequently, the aim of this work was to evaluate the physico-chemical properties of vine pruning residues with potential as enological additives. For this purpose, grapevine shoots from 12 varieties grown in Chile were collected during the winter of 2021. Samples were characterized by thermal analysis (TGA and DTG), color analysis, and their phenolic composition was analyzed using spectrophotometric and chromatographic techniques. Then, small pieces of wood samples were subjected to a toasting process, placed in contact with model wines (7 days), and compared against oak wood as a control treatment. The model wines obtained were also analyzed their total phenolic content (Folin-Ciocalteu) and antioxidant activity (DPPH). Thermal analysis showed that grapevine shoots from different cultivars had similar temperature intervals for mass losses, but both their color and phenolic composition varied according to grape variety. Like so, the model wines in contact with toasted oak wood pieces obtained from vine-shoots showed differences in their phenolic content and antioxidant capacity. Besides the prior, other compositional features of the vine shoots and treated model wines would be discussed.

Acknowledgements: Thanks to Consorcio Sur-Subantártico Ci2030-ANID Nº20CEIN2-142146 and FIC project Bip 40.047.041-0 for their financial support, and to Univiveros and CII Viña Concha y Toro for providing the vegetal materials.

References:

1)  Çetin, E.S. et al. (2011).  Chemical composition of grape canes. Ind. Crop Prod., 34, 994–998, DOI 10.1016/j.indcrop.2011.03.004

2)  Aliaño-González, M.J. et al. (2022). Wood waste from fruit trees: Biomolecules and their applications in agri-food industry. Biomolecules 12 238. DOI 10.3390/biom12020238

DOI:

Publication date: October 13, 2023

Issue: ICGWS 2023

Type: Poster

Authors

V. Felipe Laurie1*, Verónica Olate-Olave1,2, Ricardo I. Castro3, Clara Silva1

1Facultad de Ciencias Agrarias, Universidad de Talca, Talca, Chile
2Instituto de Investigación Interdisciplinaria (I3), Universidad de Talca, Talca, Chile
3Multidisciplinary Agroindustry Research Laboratory, Universidad Autónoma de Chile, Talca, Chile

Contact the author*

Keywords

vine pruning shoots, phenolic compounds, waste valorization

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

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