RESUMO -O biodiesel é resultante de uma reação de transesterificação onde um triacilglicerídeo reage com um álcool, geralmente metanol, sendo o processo realizado em catálise homogênea ou heterogênea. Este trabalho foi proposto para sintetizar um biodiesel em condições catalíticas heterogêneas. O catalisador sólido foi produzido a partir da casca do ovo, sendo este ativado com fluoreto de potássio. As amostras de biodieseis obtidas foram submetidas à análises para comprovação de conversão de acordo com a norma EN14103 e determinação do índice de acidez, de acordo com a norma preconizada pela ANP. O catalisador foi preparado a partir da calcinação a 900 o C das cascas de ovos para obtenção do óxido de cálcio. O óxido obtido tem características básicas. Isso pode ser comprovado com a utilização dos indicadores fenolftaleína e timolftaleína.
Recent literature suggests that ergogenic substances may play a beneficial role in intermittent exercise. Maltodextrin supplementation has been investigated in soccer players, but few studies have been reported. The aim of this study was to evaluate the effect of 6% maltodextrin supplementation on capillary lactate in soccer players. The study was carried out during soccer training, which was characterised by intense activity (90 min). Participants (n = 24) were randomly allocated in control (water) and intervention (6% maltodextrin solution) groups. Capillary lactate levels were evaluated at pre-exercise (0 min—t0), exercise (45 min—t1), and post-exercise (90 min—t2) moments. At t1, the mean capillary lactate concentration value was significantly higher in players not supplemented with 6% maltodextrin (5.47 mmol/L) than in supplemented players (4.79 mmol/L).
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