The purpose of this work was to study the effect of initial pH and yeast Saccharomyces Cerevisiae on biogas production from tofu wastewater (TW). The initial pH was varied in ranging of 5 – 9 in substrate without yeast (T5-T9) and with yeast (TY5-TY9). The results showed that optimum initial pH was 8. The maximum biogas was resulted in T8 (275 mL) and TY8 (421 mL). Yeast addition increased tota...

Yeast has been a very helpful organism for centuries, especially with respect to fermentation of sugars and production of bread. However, for an even longer time, yeast has been a distant relative of humans having diverged from a common ancestor, about one billion years ago. More than one third of the yeast genes have human counterparts, despite this evolutionary distance. Yeast and human ortho...

Multiplayer symbioses are common in nature, but our understanding of the ecological dynamics occurring in complex symbioses is limited. The tripartite mutualism between fungus-growing ants, their fungal cultivars, and antibiotic-producing bacteria exemplifies symbiotic complexity. Here we reveal how black yeasts, newly described symbionts of the ant-microbe system, compromise the efficiency of ...

The fungus-growing ant-microbe mutualism is a classic example of organismal complexity generated through symbiotic association. The ants have an ancient obligate mutualism with fungi they cultivate for food. The success of the mutualism is threatened by specialized fungal parasites (Escovopsis) that consume the cultivated fungus. To defend their nutrient-rich garden against infection, the ants ...

wheat flour is a commodity with a high risk of aflatoxins (afs) contamination. during the bread making there are many processes that can affect the afs stability. the effect of bread making process using different yeast types on afs levels was investigated. for this purpose, standards of afs including b and gwere added to flour and then bread loaves were prepared. three types of commercially av...

this study was conducted to investigate the effects of brewer's yeast supplementation on serum lipoproteins and blood pressure in patients with type 2 diabetes mellitus.in a randomized double blind clinical trial, 90 adults with type 2 diabetes mellitus were recruited, and divided randomly into 2 groups, trial group received brewer's yeast (1800 mg/day) and control group received placebo for 12...

Kombucha is a mushroom fermented in sweetened black or green tea, originally found Asia, being used as remedy for many ailments this region. not usual because it represents the symbiosis between yeast and variety of bacteria aggregated through permeable membrane. Among benefits tea are potential antioxidant effect against free radicals, clinical effects on diabetes its hypoglycemic, lipid-lower...