The production of an alternative form of fuel that replaces fossil fuels has been increasingly studied due to the environmental impacts generated by its excessive use, as well as the depletion of these fossil energy sources. Ethanol obtained from the crushing of sugar cane has been used as a substitute for these fuels, mainly in the automotive area. However, alternative sources are being studied to produce the so called second generation bioethanol. This would avoid competition for food producing agricultural areas and agroindustrial waste is a great source for obtaining it. In general, these residues are not always completely reused and are disposed of inappropriately in the environment, becoming contaminants. Therefore, the use of agroindustrial waste can become a renewable source of energy, in addition to reducing environmental impacts. The objective of this work is to produce second generation bioethanol as an alternative to the one currently used, using the rice husk hydrolyzate by the consortium formed by Saccharomyces cerevisiae and Pachysolen tannophilus. For this, an acid hydrolysis was performed with 2% sulfuric acid during 10 minutes of heating in an autoclave, after which the hydrolyzate was detoxified with the use of activated carbon. The crude and detoxified hydrolysates were used as a substrate for the fermentation medium with an initial concentration of 50 mg/mL of reducing sugars. The fermentation process with the use of both yeasts in the crude hydrolyzate medium, in the detoxified medium and in a synthetic medium composed of glucose, was carried out for 24 h, 30º C, 0 rpm and pH 6.5. The best results for the ethanol production of Saccharomyces cerevisiae was the synthetic medium with 20.6 mg/mL. For the yeast Pachysolen tannophilus, its highest production was in a synthetic medium with 11.67 mg/mL. The intercropping of the two yeasts proved to be efficient with a greater ethanol production reaching 21.5 mg/mL, the hydrolyzed and detoxified media showed great potential for ethanol production both in intercropping and in monoculture.

The consumption of nutritional supplements and pharmaceuticals has increased in an abusive way all over the world. The concern with body esthetics and ease of sale has led the population to use indiscriminately what can harm health. The aim of the study was to analyze the use of nutritional supplements by bodybuilders in gyms in order to know if there is consumption and if there was prior knowledge about the effects caused by food supplements and by who was recommended (whether a qualified professional or own

A cerveja é uma das bebidas alcoólica mais consumida em todo o mundo, sendo que, o Brasil é o terceiro maior consumidor e produtor dessa bebida. O principal estilo de cerveja consumida no mundo são as cervejas da família Lager, no geral produzidas em indústrias em larga escala e na apresentação pilsen. Porém, no cenário atual do setor cervejeiro, percebe-se que a produção artesanal de cerveja obteve um grande crescimento e nesse meio, as cervejas da família Ale, que são cervejas de alta fermentação, tem se destacado por caracterizar cervejas com gostos, aromas e cores diferentes das cervejas tradicionais, devido a sua alta concentração de lúpulo e outros ingredientes. Portanto, o objetivo deste trabalho foi embasar teoricamente a produção de cervejas artesanais, em especial, a cerveja American BarleyWine, que apresenta pouco estudo. A tradução literal deste estilo indica que é uma cerveja com característica semelhantes ao vinho devido ao alto teor alcoólico, tempo longo de maturação e a sua cor âmbar a vermelho escuro.

The production of an alternative form of fuel that replaces fossil fuels has been increasingly studied due to the environmental impacts generated by its excessive use, as well as the depletion of these fossil energy sources. Ethanol obtained from the crushing of sugar cane has been used as a substitute for these fuels, mainly in the automotive area. However, alternative sources are being studied to produce the so called second generation bioethanol. This would avoid competition for food producing agricultural areas and agroindustrial waste is a great source for obtaining it. In general, these residues are not always completely reused and are disposed of inappropriately in the environment, becoming contaminants. Therefore, the use of agroindustrial waste can become a renewable source of energy, in addition to reducing environmental impacts. The objective of this work is to produce second generation bioethanol as an alternative to the one currently used, using the rice husk hydrolyzate by the consortium formed by Saccharomyces cerevisiae and Pachysolen tannophilus . For this, an acid hydrolysis was performed with 2% sulfuric acid during 10 minutes of heating in an autoclave, after which the hydrolyzate was detoxified with the use of activated carbon. The crude and detoxified hydrolysates were used as a substrate for the fermentation medium with an initial concentration of 50 mg/mL of reducing sugars. The fermentation process with the use of both yeasts in the crude hydrolyzate medium, in the detoxified medium and in a synthetic medium composed of glucose, was carried out for 24 h, 30º C, 0 rpm and pH 6.5.The best results for the ethanol production of Saccharomyces cerevisiae was the synthetic medium with 20.6 mg/mL. For the yeast Pachysolen tannophilus , its highest production was in a synthetic medium with 11.67 mg/mL. The intercropping of the two yeasts proved to be efficient with a greater ethanol production reaching 21.5 mg/mL, the hydrolyzed and detoxified media showed great potential for ethanol production both in intercropping and in monoculture

Brazil is one of the countries with the largest agricultural production in the world. Therefore, it is capable of generating large amounts of agro-industrial waste that can be used as biomass for the production of biofuels. Second generation ethanol is a renewable energy alternative, capable of replacing fossil fuels. Within this context, the objective of the present work was to study the effect of diluted acid hydrolysis in different types of lignocellulosic residues and the consequent production of 2G ethanol from these hydrolysates using different fermenting microorganisms. The acid concentration that released the highest content of fermentable sugars from the acid hydrolysis of lignocellulosic materials was 5.0% of sulfuric acid and the contact time with the biomass was 15 min. while heating in autoclave. The material that showed the highest sugar release after acid hydrolysis was cassava residues, with 131.09 g.L− 1 of reducing sugars. The fermentations were carried out with microorganisms alone and also in consortium. The largest production of 2G ethanol was from the hydrolyzate of soybean hulls, of 47.70 g.L− 1 of ethanol by the consortium of Zymomonasmobilis and Candida tropicalis, during 8 h of fermentation and showed productivity of 5.96 g.L− 1.h− 1.