OBJECTIVE We aimed to investigate the amounts of nitrate, nitrite, and total organic carbon (TOC) in two drinking water sources and their relationship with some gastrointestinal diseases. METHODS This cross-sectional study was conducted in 2012 in Iran. Two wells located in residential areas were selected for sampling and measuring the TOC, nitrate (NO3(-)), and nitrite (NO2(-)). This water i...

Article type: Short communication Objective(s): To know whether Scurrula atropurpurea is able to modulate total plasma nitrate/nitrite levels, decrease endothelial damage, and increase endothelial progenitor cells (EPCs) in hypertensive rats. Materials and Methods: The rats were divided in 5 groups: control (normotensive) group, Desoxy cortico sterone (DOCA)-salt hypertensive group, and three D...

The Uriglox screening test was compared with the modified Griess Nitrite test and with standard urine cultures in the detection of significant bacteriuria on 400 ambulant and asymptomatic residents of the Athens Home for the Aged. The modified Nitrite test alone detected 62 %, and the Uriglox test 79 of the 103 cases with positive urine cultures in the examined group. There was significant over...

Among vertebrates able to tolerate periods of oxygen deprivation, the painted and red-eared slider turtles (Chrysemys picta and Trachemys scripta) and the crucian carp (Carassius carassius) are the most extreme and can survive even months of total lack of oxygen during winter. The key to hypoxia survival resides in concerted physiological responses, including strong metabolic depression, protec...

background: natural antioxidants with plant origin are incorporated to foods in the forms of essential oils or extracts. they can retard lipid oxidation and control spoilage bacteria in foodstuffs (e.g. meat products). objective: this work was aimed to evaluate the effect of nitrite partial replacement with mentha piperita essential oil (mpeo) on oxidative, microbial and sensory properties of c...

Nitrite and nitrate restore deficient endogenous nitric oxide (NO) production as they are converted back to NO, and therefore complement the classic enzymatic NO synthesis. Circulating nitrate and nitrite must cross membrane barriers to produce their effects and increased nitrate concentrations may attenuate the nitrite influx into cells, decreasing NO generation from nitrite. Moreover, xanthin...

Chloroplasts were prepared from peas (Pisum sativum) in glucose-phosphate medium. In the presence of dl-glyceraldehyde, they catalyzed nitrite-dependent O(2) evolution (mean of 13 preparations, 17.5 mumole per mg chlorophyll per hour, sd 3.64). The optimum concentration of nitrite was 0.5 mm; 0.12 mm nitrite supported V(max)/2. The reaction was accompanied by the consumption of nitrite; 55 to 8...

a 4 days study was conducted to determine the effects of different concentration of bioaugmentor bacterial strain bacillus licheniformisi, b. subtilis, b. polymyxa, b. laterosporus and b. circulans (protexin aquatech, uk) on adjustment of parameters of water quality as tan, no2-n, no3-n and turbidity from the effluent of common carp ponds. effects of time and concentration were studied as a com...

This investigation examines the possibility for nitrite chemical preservative to be delivered in meat cured products. Potassium was encapsulated delignified leaf celery and spinach placed on surface of meat. The delignification produces edible tubular cellulose (ETC) with 10 fold increased pore volume. encapsulation delivery using vegetable has been achieved both ETC ETC/Starch gel (SG) composi...