A new antibiotic, SQ 30,957, 4-diazo-3-methoxy-2,5-cyclohexadien-1-one, has been isolated from fermentation broths of Penicillium funiculosum. The structure (1) was deduced from its spectroscopic properties and its degradation reaction. SQ 30,957 has excellent activity against anaerobic bacteria such as Clostridium and Bacteroides and has moderate activity against aerobic bacteria. The compound...

Responsible for plasma membrane structure maintenance in eukaryotic organisms, sterols are essential yeast development. The role of two sterol sources Saccharomyces cerevisiae during wine fermentation is highlighted this review: ergosterol (yeast produced by cells under aerobic conditions) and phytosterols (plant imported from grape musts the absence oxygen). These compounds responsible cell vi...

This study investigated the dynamics associated with prolonged ensiling and aerobic deterioration of whole crop corn (WCC) silages and total mixed ration (TMR) silages containing WCC (C-TMR silages) to clarify the differences that account for the enhanced aerobic stability of TMR silages. Laboratory-scale barrel silos were randomly opened after 7, 14, 28, and 56 d of ensiling and were subjected...

Objective: The objective of this study was to determine the effects sour yogurt addition on fermentation, aerobic stability, and in vitro digestibility corn silages.
 Materials Methods: research material consisted harvested October yogurt. experimental groups included control without added, 10 g (Y10), 20 (Y20), 30 (Y30), 40 (Y40), 50 added 1 kg fresh corn.
 Results: It found that amo...

BACKGROUND Many bacteria are facultative anaerobes, and can proliferate in both anoxic and oxic environments. Under anaerobic conditions, fermentation is the primary means of energy generation in contrast to respiration. Furthermore, the rates and spectra of spontaneous mutations that arise during anaerobic growth differ to those under aerobic growth. A long-term selection experiment was undert...