A technique is described to rapidly remove the pancreas from fed, adult Shetland ponies and to perfuse it in vitro. Thirty minute squarewave glucose stimuli (300 or 800 mg/dl) resulted in a dose dependent pattern of insulin secretion. The initial spike was similar to that observed in other mammals. Subsequent secretion, however, gradually decreased in relation to the initial spike. Butyrate (25...

A comparative evaluation of single-stage and two-stage anaerobic digestion processes for biomethane and biohydrogen production using thin stillage was performed to assess the impact of separating the acidogenic and methanogenic stages on anaerobic digestion. Thin stillage, the main by-product from ethanol production, was characterized by high total chemical oxygen demand (TCOD) of 122 g/L and t...

The fermentation process is an important component in the biodegradation of organic compounds in natural and contaminated systems. Comparing with terminal electron-accepting processes (TEAPs), however, research on fermentation processes has to some extent been ignored in the past decades, particularly on the persistence of fermentation process in the presence of toxic organic pollutants. Both f...

This innovative Biorefinery platform is based on the integration of a mild thermal pre-treatment and solid/liquid separation unit to parallel-integrated bioprocesses specifically selected food waste distinctive chemical composition: liquid fraction, rich in readily fermentable sugars, be transformed into valuable biobased products, solid organic residue enhance biomethane production generating ...

A laboratory air emission evaluation system consisting of eight emission vessels (19 L each) has been developed and used to investigate the effects of bio/chemical agents or feed additives on ammonia and odor emissions from poultry manure. A novel approach was used to evaluate volatile organic compounds (VOCs) and odor emissions, featuring air sampling with carboxen/PDMS 85 micrometer SPME fibe...

"VOC emissions from beef feedlot pen surfaces as affected by within-pen location, moisture and temperature" (2015). Air quality Feedlot Gas chromatography Odour VOC A laboratory study was conducted to evaluate the effects of pen location, moisture, and temperature on emissions of volatile organic compounds (VOC) from surface materials obtained from feedlot pens where beef cattle were fed a diet...

Conventional anaerobic digesters (ADs) treating dairy manure are fed with raw or fermented manure rich in volatile fatty acids (VFAs). In contrast, pre-fermented AD (PF-AD) is fed with the more recalcitrant, fiber-rich fraction of manure that has been pre-fermented and depleted of VFAs. Thus, the substrate of PF-AD may be likened to a lean diet rich in fibers while the pre-fermentation stage fe...

To clarify fermentative alterations in the large intestine (hindgut) during grazing, fecal alcohol and volatile fatty acids (VFAs) concentrations were evaluated in 30 dairy heifers. The heifers were kept in pasture growing mixed grass herbage from spring (mid May) until October, and their rectal feces were collected periodically. Concentrations of ethanol, methanol and isopropanol were increase...

the effect of three levels of eucalyptus leaf (0, 28.65 or 57.37mg/200mg substrate), which were either oven, freeze or air dried on in vitro ruminal fermentation characteristics was assessed. the studied parameters were in vitro gas production (ivgp), methane production, ammonia (nh3-n) concentration, in vitro organic matter degradability, partitioning factor (pf) (ratio of substrate truly degr...

Aim. To evaluate the content of calprotectin and volatile fatty acids (VFAs) in feces patients with inflammatory bowel disease (IBD). Materials methods. 61 (33 men 28 women) IBD aged 20 to 66 years (the mean indicator was 41.80 ± 1.14 years) were examined. The treated Department Intestinal Diseases SI “Institute Gastroenterology National Academy Medical Sciences Ukraine”. All divided into two g...