An aerobic Lactobacillus plantarum culture displayed growth stagnation during early growth. Transcriptome analysis revealed that resumption of growth after stagnation correlated with activation of CO2-producing pathways, suggesting that a limiting CO2 concentration induced the stagnation. Analogously, increasing the CO2 gas partial pressure during aerobic fermentation prevented the temporal growth stagnation.
- American Society for Microbiology
- Improvement of lactobacillus plantarum aerobic growth as ...
McCain - Case Study
Longer life for gas engine after H2S removal Potato processing company McCain in Lelystad, the Netherlands, receives biogas from both the anaerobic water treatment and the solids digester. The biogas - derived from fermenting potato peels - contains high levels of hydrogen sulphide. To prevent corrosion of the gas engine that uses the biogas as a power source, THIOPAQ® technology converts the hydrogen sulphide into elemental sulphur. THIOPAQ® technology smoothly handles the daily changing flow of biogas...
Managing livestock diets to reduce greenhouse gas emissions - Case study
Scientists in South East Asia have been measuring greenhouse gas (GHG) emissions from goats and cattle in a series of research projects investigating the effects of different feeding regimes. In each case, the eructed, or belched, emissions from each animal were measured with a portable FTIR gas analyzer from Gasmet Technologies. The research papers have been published by ‘Livestock Research for Rural Development,’ a peer-reviewed international journal for research into sustainable developing world...
The gas to grid plant Icknield in UK - Case Study
Location: Ipsden, Oxfordshire (UK)Capacity: 960 kWelInput materials: Pig slurry, farm by-products, energy cropsFeatures: Production of 700 Nm³ biomethane, 360 kWel CHP, Supply natural gas to 2,150 households, Fermentation residue as fertiliser38 million kilowatt hours per yearIcknield Gas Ltd. is the first biogas plant in Great Britain with a gas processing facility from EnviTec Biogas AG. Since the end of 2014, the 370 cubic metre plant, along with a 360 kWel combined heat and power plant in Ipsden, Oxfordshi...
Five key lessons from your open grass silage clamp
Having results of a silage analysis is one thing. But often, it’s only when you get stuck into seeing what’s inside, and feeding it, that you get a full picture of what you’ve produced. And how good it is. The quality (and quantity) of your silage can have a major impact on the financial health of your business for six months or more. So, it’s worth checking it now, to see if any improvements can be made next year. The key is to commit to noting down your clamp observations. Better...
The risks of spreading slurry after first silage cut
Livestock farmers spreading slurry onto fields after first-cut grass silage face heightened risks of contamination after this year’s early start to the season, a silage specialist is warning, especially if following the current trend to more frequent silage cutting.The risks of spreading slurry after first silage cut According to Ecosyl silage expert, Darran Ward, spreading slurry after first-cut always poses a risk – because of the challenge of achieving the 10-week interval typically recommended...