Butyric acid production from brown algae using Clostridium tyrobutyricum ATCC 25755

Production of butyric acid from acid hydrolysate of corn husk in fermentation by Clostridium tyrobutyricum: kinetics and process economic analysis

“…Particularly, several Clostridium species including C. butyricum, C. thermobutyricum , and C. tyrobutyricum can produce butyric acid as the main metabolic product and their potential for industrial production of butyric acid has been extensively studied [ 8 – 11 ]. Recent fermentation process studies for bio-production of butyric acid have focused on C. tyrobutyricum using various substrates, including glucose, xylose [ 12 – 14 ], sucrose [ 15 ], cane molasses [ 16 ], corn meal [ 17 ], Jerusalem artichoke [ 18 ], and brown algae [ 19 ]. Since carbon source accounts for a large proportion of raw material costs, second-generation biorefineries focus on using abundant, cheap, renewable lignocellulosic biomass to produce biofuels and bio-based chemicals, including butyric acid [ 8 , 20 , 21 ].…”

Cultivation of Chlorella vulgaris JSC-6 with swine wastewater for simultaneous nutrient/COD removal and carbohydrate production

“…Therefore, using nitrogen-abundant swine wastewater to cultivate carbohydrate-rich microalgae, instead of lipid-rich ones, may be a more reasonable approach when considering the requirement of strict nitrogen starvation conditions needed for lipid accumulation in microalgae. This study thus used an isolated microalgal strain able to accumulate a high content of carbohydrates for the reduction of nutrients and COD in the swine wastewater, and the obtained microalgal biomass may be used as a feedstock for microbial fermentation to produce biofuels (e.g., ethanol, butanol) (Castro et al, 2015;Ho et al, 2013) and chemicals (e.g., lactic acid, butyric acid) (Song et al, 2011;Talukder et al, 2012).…”

Continuous fermentation and kinetic experiments for the conversion of crude glycerol derived from second-generation biodiesel into 1,3 propanediol and butyric acid

“…Despite the high yields, pure culture sterilization requirements, in combination with the requirements for pre-treatment and enzymes addition (in case of lignocellulosic biomasses), have not allowed for cost-efficient biological production of butyric acid on an industrial scale yet [21]. Various feedstocks have been studied for butyric acid production by fermentation [22][23][24][25][26][27][28], however, although a few research studies have focused on hydrogen production from glycerol and reported butyric acid as one of the by-products [29,30], there is a lack of studies investigating butyric acid production from crude glycerol. In a previous study, however, the authors have selected several MMC able to grow on animal fat-derived glycerol and produce, together with 1,3 PDO, butyric acid at interesting yields.…”