Blackberry (Rubus spp.): influence of ripening and processing on levels of phenolic compounds and antioxidant activity of the 'Brazos' and 'Tupy' varieties grown in Brazil

Abstract

RESUMO Algumas frutas de clima temperado e tropical, principalmente as do tipo "berries", têm como característica o acúmulo de compostos antioxidantes e são objeto de inúmeros estudos, haja vista a sua correlação com os benefícios para a saúde humana. Os objetivos deste trabalho foram quantificar as antocianinas, os compostos fenólicos e mensurar a capacidade antioxidante (ferric reducing antioxidant power -FRAP) de amoraspretas de duas cultivares ('Brazos' e 'Tupy'), nos três estágios de maturação, considerados verde, semi-maduro e maduro, e dos seus produtos (polpas e fermentados). No processo de maturação da

Antioxidant, antimicrobial and anti-quorum sensing activities of Rubus rosaefolius phenolic extract

“…The phenolic content found in the extract was 5902.89 ± 7.42 mg GAE/L (the phenolic extract had an equivalent of 3300 g of pulp/L). This amount is equal to 177.26 mg GAE/100 g of pulp which falls within the range found for other fruits from the Rubus generum (Zielinski et al, 2015;Ferreira et al, 2010). Rufino et al (2010) suggested a classification scheme where the phenolic content of fruits could be grouped as low if the concentration was <100 mg GAE/100 g of fruit, medium for the range 100-500 mg GAE/100 g and high for >500 mg GAE/100 g. Based on this classification, R. rosaefolius would be classified as having a medium content of phenolic compounds.…”

Phytochemical profiles of wild blackberries, black and white mulberries from southern Bulgaria

“…Kafkas et al [13] ) and sucrose content (2.6, 1.5, 1.4, 1.2 and 2.0 mg g ¡1 ) in Navaho, Chester Thornless, Jumbo, Bursa 2 and Loch Ness blackberry cultivars, respectively, grown in the Mediterranean region of Turkey. The glucose and fructose contents of the wild blackberry accession studied in this research were markedly richer compared to the amounts described by Zielinski et al [19] in Brazos and Tupy blackberries grown in southern Brazil: glucose (3.11 and 3.30 g¢100 g ¡1 ) and fructose (2.86 and 2.49 g¢100 g ¡1 ). Sensoy et al [27] quantified the fructose (8.84À16.31 g kg ¡1 ) and glucose (1.48À3.89 g kg ¡1 ) contents in wild blackberries from Van, Turkey.…”

Solar drying kinetics and bioactive compounds of blackberry (Rubus fruticosus)

“…Blackberry (Rubus fruticosus) is a perennial shrub that is native to Europe (Radovanovi c, Anđelkovi c, Radovanovi c, & Anđelkovi c, 2013) and is characterized by being labor-intensive and also for providing a high economic return (Zielinski et al, 2015). In Mexico, 152,921.52 tons were harvested in 2014, making it the largest producer in North America (SIAP-SAGARPA, 2016).…”