Issue |
Ciência Téc. Vitiv.
Volume 37, Number 1, 2022
|
|
---|---|---|
Page(s) | 1 - 12 | |
DOI | https://doi.org/10.1051/ctv/ctv202237011 | |
Published online | 18 February 2022 |
Article
Influence of abscisic acid, Ascophyllum nodosum and Aloe vera on the phenolic composition and color of grape berry and wine of 'Cabernet Sauvignon' variety
Influência de ácido abscísico, Ascophyllum nodosum e Aloe vera na composição fenólica e na cor da uva e do vinho da variedade ‘Cabernet Sauvignon’
1
Unicesumar ; St Des. Westphalen, 60, Zip Code 84010-000, Ponta Grossa/Paraná, Brazil
2
UEPG ; Av. General Carlos Cavalcanti, 4748, Zip Code 84030-900, Ponta Grossa/Paraná, Brazil
3
Vinicola Legado, Rod. Eng. Raul Azevedo de Macedo, 5800, Zip Code 83648-000, Campo Largo/Paraná, Brazil
4
UFPEL, Campus Universitário, Capão do Leão, Zip Code 96160-000, Pelotas/Paraná, Brazil
5
Unicentro, Street Padre Salvatore Renna, 875, Zip Code 85015-430, Guarapuava/Paraná, Brazil
* Corresponding author: Tel.: +55 49 9 9956 5512; e-mail: isabela.pessenti@unicesumar.edu.br
Received:
28
October
2021
Accepted:
1
February
2022
In viticulture, various techniques can be used to improve productivity, tolerance to biotic or abiotic stress, the quality of grapes and wines such as the use of plant regulators and biostimulants. Thus, the objective of this work was to evaluate the effect of application of abscisic acid (S-ABA), Ascophyllum nodosum (A. nodosum) seaweed extract and Aloe vera (A. vera) gel on phenolic composition and chromatic characteristics of grapes from the 'Cabernet Sauvignon' variety. The experiment was conducted in a commercial vineyard in Campo Largo - Paraná, in two consecutive seasons, 2017/18 and 2018/19, involving the following treatments: 1) control; 2) (S-ABA) 400 mg/L; 3) S- ABA 600 mg/L; 4) A. vera gel 200 mL/L; 5) A. vera gel 400 mL/L; 6) seaweed extract 0.2 mL/L; 7) seaweed extract 0.4 mL/L. Two applications were performed with the seaweed extract and A. gel when the bunches were at veraison stage (50 and 75% of grape berries with coloration). Total anthocyanins content, total polyphenols content and activity of phenylalanine ammonia-lyase (PAL), polyphenoloxidase and peroxidase enzymes were assessed in the berries skin. Total anthocyanins, individual anthocyanins and total polyphenol contents as well as lightness, chroma and hue angle were analyzed in the corresponding wines. S-ABA increased the content of anthocyanins and total polyphenols, as well as the activity of PAL in the first season. A. nodosum (AN) seaweed extract increased the total polyphenol content, total anthocyanins content and PAL in the berry skin of 'Cabernet Sauvignon' variety. S-ABA increased the total polyphenol content and anthocyanins in wine, as well as the A. nodosum, in at least one of the evaluated seasons.
Resumo
Na viticultura, várias técnicas podem ser utilizadas para melhorar a produtividade, a tolerância ao estresse biótico ou abiótico e a qualidade das uvas e dos vinhos, tais como o uso de reguladores vegetais e de bioestimulantes. Assim, o objetivo deste trabalho foi avaliar o efeito da aplicação de ácido abscísico, de extrato de alga Ascophyllum nodosum e de gel de Aloe vera na composição fenólica e nas características cromáticas de uvas da variedade 'Cabernet Sauvignon'. O experimento foi realizado numa vinha comercial em Campo Largo - Paraná, em duas safras consecutivas, 2017/18 e 2018/19, envolvendo os seguintes tratamentos: 1) testemunha; 2) S-ABA 400 mg/L; 3) S-ABA 600 mg/L; 4) A. vera 200 mL/L; 5) A. vera 400 mL/L; 6) A. nodosum 0,2 mL/L; 7) A. nodosum 0,4 mL/L. Realizaram-se duas aplicações para o extrato de alga e gel, quando os cachos estavam em fase de pintor (50 e 75% das uvas apresentando mudança de cor). Avaliou-se o teor de antocianinas totais e polifenóis totais e atividade das enzimas fenilalanina amônia-liase, polifenoloxidase e peroxidase na película das uvas. No vinho, foram analisados o teor de antocianinas totais, antocianinas individuais e teor de polifenóis totais, luminosidade, croma e tonalidade. O S-ABA incrementou o teor de antocianinas e polifenóis totais, assim como a atividade da PAL na primeira safra. A. nodosum (AN) promoveu o aumento do teor de polifenóis totais, antocianinas totais e a PAL na película da uva da variedade 'Cabernet Sauvignon'. No vinho, o S-ABA incrementou polifenóis totais e antocianinas totais, assim como o A. nodosum, em pelo menos uma das safras avaliadas.
Key words: Vitis vinifera / flavonoids / biosynthesis / enzymatic activity / winemaking
Palavras-chave: Vitis vinifera / flavonóides / biossíntese / atividade enzimática / vinificação
© Pessenti et al., 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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