Primary production in the meromictic Lake Cadagno, Switzerland, is dominated by anoxygenic photosynthesis. The green sulfur bacterium Chlorobium clathratiforme is the dominant phototrophic organism in the lake, comprising more than half of the bacterial population, and its biomass increases 3.8-fold over the summer. Cells from four positions in the water column were used for comparative analysi...

In the context of hydrogen production from biomass or organic waste with dark fermentation, this study analysed 55 studies (339 experiments) in literature looking for effect operating parameters on process performance fermentation. The substrate concentration, pH, temperature, and residence time yield, productivity, content biogas was analysed. addition, a linear regression model developed to a...

Abstract Background This study focuses on the processes occurring during acidogenic step of anaerobic digestion, especially resulting from nutritional interactions between dark fermentation (DF) bacteria and lactic acid (LAB). Previously, we have confirmed that DF microbial communities (MCs) fed molasses are able to convert lactate acetate butyrate. The aims were recognize biodiversity DF-MCs u...

The technical feasibility of valorizing tequila vinasse (TV), a wastewater with high pollution potential, through the production biogenic hydrogen via dark fermentation, has long been proven in diverse lab-scale reactors that were operated either batch or continuous mode. However, such systems have mainly tested diluted streams and nutrient supplementation, hindering techno-economic attractiven...

In recent years, much attention has been directed towards the integration of dark fermentation process into a biorefinery concept to enhance energetic gains, thereby improving competitiveness this process. The volatile fatty acids (VFAs) from fermentative H2-producing processes serve as precursors for microbial synthesis broad spectrum biotechnologically-important products such biofuels and bio...

One effort to overcome the waste problem is by recycling into something useful, such as making eco enzymes that can be used in various fields through fermentation process. The duration of enzyme determined purpose its production, but most studies require a 3 months produce ideal enzyme. raw material this study peel Kintamani orange (Citrus nobilis) widely cultivated Bali. This was aimed examine...

The combined effects of inoculation level (4 or 8-fold compared to standard inoculation) and sequence (standard inoculation before fermentation and 3-fold inoculation at the end of fermentation=1+3, Two-fold inoculation before fermentation and the same at the end of fermentation=2+2, 2+6, 4-fold before fermentation=4, 4+4, and 8) of culture inoculum containing probiotics on biochemical and micr...