The biofilm-electrode reactor coupled with sulfur autotrophic denitrification process (BER-SAD) was used to remove nitrate in groundwater, and the effect of current intensity on characteristics explored. Current had a great influence process, maximum removal efficiency 99.9% lowest nitrite production were gained under optimum density 100 mA. Moreover, accumulation concentration SO 4 2- increase...

The connection between the regulation of L-arginine transport and nitric oxide (NO) synthesis was studied in rat alveolar macrophages. Lipopolysaccharides (LPSs) and interferon-gamma stimulated in the same concentration- and time-dependent manner NO synthesis (measured by nitrite accumulation) and L-[(3)H]arginine uptake. This correlated with an increased mRNA expression for iNOS and the cation...

TO THE EDITOR: Recent studies show that dietary supplementation with inorganic nitrate (NO3 ) reduces whole body oxygen cost during physical exercise, an effect that might be used by endurance athletes in an attempt to increase stamina (1–3, 6, 7, 9–11). In the cited exercise studies, nitrate was taken in the form of a salt (e.g., sodium nitrate) or from a food source such as beetroot juice, wh...

nitrite is responsible for some characteristics of cured meat products such as color, flavor and suppressing the outgrowth and production of toxin from clostridium botulinum. despite all of its desired properties, nitrite is responsible for the formation of carcinogenic n-nitrosamine. in this study, nitrite-free and low-nitrite meat curing systems were developed to eliminate or reduce nitrite f...

The effect of N-acetyl-L-cysteine on interleukin-1beta-induced nitric oxide synthase expression was studied in rat vascular smooth muscle cells to determine if the reduction/oxidation state would modulate cytokine-induced changes. Interleukin-1beta induced the production of nitrite, a stable metabolite of nitric oxide in a time- and dose-dependent manner. Cytokine-induced nitrite production was...

Nitrate and certain short chain nitrocompounds and nitro-oxy compounds are being investigated as dietary supplements to reduce economic and environmental costs associated with ruminal methane emissions. Thermodynamically, nitrate is a preferred electron acceptor in the rumen that consumes electrons at the expense of methanogenesis during dissimilatory reduction to an intermediate, nitrite, whic...