A frequently used fermentation manner in lactic acid (LA) production, batch fermentation by pure cultures, has a limited practicability: low volumetric productivity and high energy consumption. In this study, continuous LA fermentation was performed in a completely stirred tank reactor at 12h HRT, inoculated with anaerobic digester sludge. Glucose (25 g COD/L) was used as a feedstock and temper...

BACKGROUND Functional constipation is one of the most prevalent childhood gastrointestinal disorders. We evaluated effects of adding a probiotic to mineral oil in the treatment of functional constipation in children. MATERIALS AND METHODS This controlled trial was conducted on 60 children (2 to 14 years old) with functional constipation (Rome III criteria). Children were allocated to receive ...

The heat resistance of the spores of six species of bacteria varied with water activity (a,) at which the spores were heated, although the magnitude of the changes differed greatly between species. At all a, values there was an approximately linear relation between the logarithm of the number of viable spores and the time of heating. The slopes of these straight lines were used to describe the ...

One of the most plausible explanations for the ability of thermophilic organisms to grow at temperatures that usually are lethal to other organisms is that they possess relatively heat-stable proteins. Substantial support for this hypothesis recently has been furnished by Koffler and his associates,1 2 who showed that cytoplasmic proteins obtained from thermophilic bacteria are strikingly more ...

Lignocellulose is one of the most abundant renewable feedstocks that has attracted considerable attention as a substrate for biofuel and biochemical production. One such biochemical product, lactic acid, is an important fermentation product because of its great potential for the production of biodegradable and biocompatible polylactic acid. High-titer lactic acid production from lignocellulosic...