Total content of phenols and antioxidant activity of grape skins and seeds cabernet sauvignon cultivated in Valle de Guadalupe, Baja California, México

Abstract

The evaluation of the antioxidant capacity of grape cultivars Cabernet sauvignon is important because it varies according to the production area. In this work, it was evaluated the content of phenolic compounds and the total antioxidant capacity (CAT) of grape skins and grape seed Cabernet sauvignon (Vitis vinifera L.) in three vineyards located in the Valley of Guadalupe, B.C, México. The content of total phenols was determined by the Folin-Ciocalteau method and the CAT of grape skin and seed extracts by the stabilization methods of the (ABTS•+) and DPPH• radicals. The CAT in the seed extracts was increased (P < 0.05) in the following order: vineyard 2 < vineyard 1 < vineyard 3. The highest contents of gallic acid, resveratrol and rutin were found in the extracts that presented the highest CAT, which corresponded to the cultivars of vineyard 3. The same happened in extract of skins, having vineyard 3 the contents of CAT (ABTS•+) higher. The total phenolic seed compound was presented in vineyard 2 with 1,545, followed by vineyard 1 with 1,523, vineyard 3 with 1,146 expressed as g GAE.100 g of sample. In skin, the behavior was as follows; vineyard 3 <vineyard 2 <vineyard 1. 1,062, 1,086, 1,115 expressed as g GAE.100 g sample respectively.Keywords: antioxidant, phenolics, ABTS, gallic acid.

Phytochemical Contents of Different Parts of the Seeded Raisins from the South‐East Anatolia: Enzyme Inhibitory Potential of Pulp Extracts

“…Furthermore, pulp extract of Horoz Karası was determined to have the highest total phenolic (6.92 μg/mg) and flavonoid (2.18 μg/mg) contents among the studied pulp extracts. In conclusion, total phenolic content of the studied seed extracts were richer than the pulp and leaf extracts that is in parallel with the literature [24,25] …”

Influence of grape variety on bioactive compounds, antioxidant activity, and phenolic compounds of some grape seeds grown in Turkey

“…Total phenolic (Özcan et al, 2017). Our findings related to total phenol, total flavonoid and antioxidant activity of grape seeds were higher than the studies of Göktürk Baydar et al (2011), Özcan et al (2017) and Castro-Lopez et al (2019). When results compared to previous studies, some differences observed can be probably attributed to varieties, color of grapes and cultivars and cultural factors.…”

“…(2017) and Castro‐Lopez et al. (2019). When results compared to previous studies, some differences observed can be probably attributed to varieties, color of grapes and cultivars and cultural factors.…”

“…(2008) determined 4.66–5.12 mgGAE/100 g total phenol and 66.41%–81.40% antioxidant activity values of in several grape seed extracts. While total phenol contantes of Cabernet Sauvignon seeds change between 1.146 gGAE/100 g and 1.545 gGAE/100 g, flavonoid contents of grape seeds extracts varied between 0.349 gEQ/100 g and 1.004 g EQ/100 g (Castro‐Lopez et al., 2019). Antioxidant activity, TPC and TF contents of some grape seed extracts, respectively, changed between 86.688% and 90.974%, 421.563 and 490.625 mgGAE/100 g, and 90.595 and 145.595 mg/g (Özcan et al., 2017).…”

The Effects of UV Irradiation and Incubation Time on in vitro Phenolic Compound Production in 'Karaerik' Grape Cultivar

“…It is known that the presence and the ratio of certain phenolic substances in the composition of the grape is primarily a genetically controlled characteristic in varieties. In recent years, phenolic compounds were asserted as an important quality criterion for grape cultivars, and studies related with the determination of differences between them in terms of production capacity become popular (Rodríguez-Montealegre et al 2006;Lutz et al 2011;Perestrelo et al 2012;Atak and Göksel 2019;Castro-Lopez et al 2019;Colombo et al 2019;Di Lorenzo et al 2019). However, the content is characterized by depending on the climate, soil effects, maturity stage and cultural practices in the cultivation area (Ribéreau-Gayon et al 2000).…”