In this work, three different broccoli maturity stages subjected to biofortification with selenium were evaluated for antioxidant and antiproliferative activities. Antioxidant trials have shown that the maturation stages biofortified with selenium had significantly higher amounts of phenolic compounds and antioxidant activity, especially seedlings. Although non-polar extracts of all samples show antiproliferative activity, the extract of broccoli seedlings biofortified with selenium stood out, presenting cytocidal activity for a glioma line (U251, GI50 28.5 mg L(-1)).

Palavras-chave: Solanum lycopersicum, produtividade, características físico-químicas. ABSTRACT Agronomic performance and physico-chemical quality in tomato hybrids grown without guidingThe evaluation of cultivars within the same soil and climatic conditions allows comparison of genotypes for its yield and quality potential, seeking to establish the most adapted for each region. This study aimed to evaluate the yield and fruit quality of tomato hybrids grown without guiding, for fresh consumption and processing. The field experiment was carried out in Pinhão, Paraná state, Brazil, in two years (2009/2010 and 2010/2011). The experimental design was a randomized complete block with four replications. Ten tomato hybrids were used (Supera, Granadero, AP-529, AP-533, Kátia, Laura, Fascínio, Tinto, Red Spring and Vênus). We evaluated total and marketable yield, average fruit weight, fruit damage, presence of peduncle; and characteristics of quality: dry mass, fruit firmness, mesocarp thickness, soluble solids, titratable acidity, soluble solids/ titratable acidity ratio, pH, ascorbic acid, lycopene and reducing sugars. Granadero was the hybrid with the highest total yield (112.5 t ha -1 in 2009/2010 and 78.5 t ha -1 in 2010/2011) and marketable yield (88.7 t ha -1 in 2009/2010 and 69.0 t ha -1 in 2010/2011) in two years of experiment, as well as the highest dry matter and soluble solids and the highest mesocarp thickness. Tinto and Venus also stood out in total and marketable yield and the hybrid which had the highest average fruit weight was Venus (99.9 g). For the soluble solids/ titratable acidity ratio, Granadero, Venus, Supera, Tinto and Fascínio showed ratios above 10 in both years. Laura, Red Spring and Venus showed good values for ascorbic acid and lycopene. Overall, the best performing hybrid for traits and for both segments was Granadero, but this hybrid showed low genotypic stability. So Venus and Tinto, despite lower yields, could be recommended because they presented good quality and stability to the region.

A crescente demanda pelos minitomates (Solanum lycopersicum var. cerasiforme), tem despertado grande interesse dos agricultores (Lenucci et al., 2006). Desde sua introdução no mercado na década de 1990, seu cultivo e consumo vêm aumentando e se difundindo em todo o país. Este tomate de mesa é geralmente consumido in natura e considerado produto gourmet, principalmente por estar presente em refinados pratos e ser de uso muito versátil. Ainda, pelas particularidades do cultivo este tem sido realizado exclusivamente em ambiente protegido, o que garante o alto desempenho agronômico e a qualidade do produto. Estas características de cultivo demandam mão-de-obra minuciosa, o que demonstra papel socioeconômico importante principalmente para a agricultura familiar (Alvarenga, 2013

Orange is highly nutritious and a source of phytochemical compounds. However, its by-products are usually discarded. In this study, we evaluated the effect of orange peel (OP) addition in orange jam on sensory, physicochemical, and nutritional characteristics. Four jam formulations were elaborated with different OP levels: OP0 (standard), OP4, OP8, and OP12 (Orange Peel 0, 4, 8 and 12%, respectively). All samples were evaluated for sensory acceptability, and physicochemical and nutritional composition. The addition of 12% orange peel in jam reduced (p < 0.05) the acceptability for all evaluated attributes, as well as overall acceptance and purchase intention. However, OP utilization increased (p < 0.05) the levels of water activity, soluble solids, titratable acidity, and sugars. Soluble solids/titratable acidity ratio, luminosity (L*), and yellow content (b*) decreased in all added OP jams, while red content (a*) increased. No change in the pH and moisture values of the product were observed after OP addition. Ash, protein, lipid, dietary fiber, ascorbic acid, carotenoids, phenolic compounds, and antioxidant capacity values increased after OP addition, while carbohydrate and energy content decreased. A texture test showed that adhesiveness decreased, while gumminess, chewiness, and elasticity increased after OP addition. We concluded that the addition of up to 8% orange peel in jam maintains sensory acceptability similar to that of the standard product. OP addition is a viable alternative to improve some of the product’s physicochemical and nutritional characteristics.

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