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Recebido em 5/6/12; aceito em 21/11/12; publicado na web em 4/4/13 Agronomic biomass yields of forage sorghum BRS 655 presented similar results to other energy crops, producing 9 to 12.6 tons/ha (dry mass) of sorghum straw. The objective of this study was to evaluate the lignocellulosic part of this cultivar in terms of its potential in the different unit processes in the production of cellulosic ethanol, measuring the effects of pretreatment and enzymatic hydrolysis. Three types of pre-treatments for two reaction times were conducted to evaluate the characteristics of the pulp for subsequent saccharification. The pulp pretreated by alkali, and by acid followed by delignification, attained hydrolysis rates of over 90%.

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Due to the high content of bioactive compounds, herbal teas are being investigated as adjuvant in chronic disease management. Studies have shown that mango leaf tea contain mangiferin, total phenolics and antioxidants, compounds with many functional properties. Therefore, this study aims to evaluate the anti-obesity effects of tea from Mangifera indica L. leaves, Ubá variety (TML), in obese rats fed a high-fat diet (HFD). For this, adult male Wistar rats were divided into three groups (n=8): the control group (fed AIN-93 diet), obese group (fed a HFD) and treated group (fed a HFD and supplemented with TML for 8 weeks). We analysed biometric measures and serum biochemical parameters of metabolic control, inflammation and oxidative stress biomarkers, histomorphometry of visceral adipose tissue and mRNA expression of peroxisome proliferator-activated receptor gamma co-activator 1 alpha (PPAR-γ), lipoprotein lipase (LPL) and fatty acid synthase (FAS). The consumption of TML (24.7±2.1mL/day) exerted antioxidant and anti-inflammatory effects, increasing total antioxidant capacity and interleukin-10 serum concentrations, reduced abdominal fat accumulation, upregulated PPAR-γ and LPL and downregulated FAS expression. Our data suggest that TML has therapeutic potential in treating obesity and related diseases through regulating the expression of transcriptional factors and enzymes associated with adipogenesis.

Um experimento foi conduzido com o objetivo de avaliar a utilização de farelo do resíduo de manga (FRM) (Mangifera indica L., var. Ubá) em rações para frangos de corte de 1 a 42 dias de idade. Utilizaram-se 600 pintos machos, Ross, distribuídos em delineamento inteiramente casualizado, com cinco tratamentos, cada um com seis repetições de 20 aves por unidade experimental. Os tratamentos consistiram da inclusão de 0,0; 2,5; 5,0; 7,5 ou 10,0% de farelo do resíduo de manga em dietas à base de milho e farelo de soja. Avaliaram-se o consumo de ração (CR), o ganho de peso (GP), a conversão alimentar (CA) e o índice de eficiência produtiva (IEP). No período de 1 a 42 dias de idade, não houve efeito dos níveis de farelo do resíduo de manga no consumo de ração. O ganho de peso e a conversão alimentar também não foram afetados pela inclusão de 2,5 e 5,0% de farelo do resíduo de manga na ração. A inclusão de até 5% de farelo do resíduo de manga na ração não afeta o desempenho de frangos no período de 1 a 42 dias de idade.