Nitrate Analysis in Meats; Comparison of Two Methods

Sanderson, James E.; Consaul, J. R.; Lee, Ken

doi:10.1111/j.1365-2621.1991.tb14662.x

Cited by 13 publications

(6 citation statements)

References 19 publications

(16 reference statements)

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“…Nitrate in the extract was assayed following the Griesscadmium reduction method (Elliot and Porter, 1971), while nitrite was assayed NITRATE AND NITRITE IN SELECTED VEGETABLES IN JORDAN directly without going through the cadmium reduction step. Nitrate concentration was calculated by subtracting the direct nitrite content from the cadmium-reduced nitrite value (Sanderson et al, 1991) read from a sodium nitrite standard curve. The nitrate added for recovery control was subtracted from each nitrate value.…”

Section: Nitrate and Nitrite Analysismentioning

confidence: 99%

Effect of Cultivar and Harvest Date on Nitrate (NO3) and Nitrite (NO2) Content of Selected Vegetables Grown Under Open Field and Greenhouse Conditions in Jordan

Amr

Hadidi

2001

Journal of Food Composition and Analysis

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Section: Nitrate and Nitrite Analysismentioning

confidence: 99%

Effect of Cultivar and Harvest Date on Nitrate (NO3) and Nitrite (NO2) Content of Selected Vegetables Grown Under Open Field and Greenhouse Conditions in Jordan

Amr

Hadidi

2001

Journal of Food Composition and Analysis

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“…Serum NO concentrations were measured indirectly in terms of nitrate by colorimetric assay (Boehringer, Mannheim, Germany) [21,22]. In order to minimize exogenous nitrate source, each subject was given a list of foods rich in nitrate and told to avoid them for 3 days before blood was taken [23].…”

Section: Determination Of Serum Nitrous Oxide Concentrationmentioning

confidence: 99%

Elevated levels of nitrate in rheumatoid arthritis

et al. 2001

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Nitric oxide (NO) is a free radical that plays important roles in many physiological and pathological processes. Evidence suggests that NO participates in the pathogenesis of inflammatory reactions in many autoimmune and inflammatory diseases such as rheumatoid arthritis (RA). The purpose of this study was to evaluate serum concentrations of NO in patients with RA and to determine whether they correlate with clinical and laboratory parameters of RA disease activity. Twenty-seven RA patients were recruited for the study and compared with 20 healthy subjects. Serum NO concentrations were measured indirectly in terms of nitrate using colorimetric assay. Disease activity was determined by laboratory and clinical findings. Mean serum concentrations of nitrate were significantly higher than those of healthy controls (P < 0.05). Among the disease activity parameters, C-reactive protein, number of swollen and tender joints, Ritchie articular index, and disease activity scores correlated significantly with serum NO levels. Our results suggest that these levels can serve as a reliable parameter of disease activity in patients with RA. Further knowledge about the precise role of NO may lead to better understanding of the pathogenesis of RA. Furthermore, modulation of NO synthesis may represent a new approach to the treatment of inflammatory and autoimmune conditions.

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“…The simultaneous determination of nitrite and nitrate concentrations is of rapidly increasing interest for the food industry . The majority of the methods involve spectrophotometric procedures , , , . Among these, the cadmium column reduction method is the most widely used (Cd column−Griess method).…”

Section: Introductionmentioning

confidence: 99%

Development of a Cost-Effective Method for Nitrate and Nitrite Determination in Leafy Plants and Nitrate and Nitrite Contents of Some Green Leafy Vegetables Grown in the Aegean Region of Turkey

Özdestan

Üren

2010

J. Agric. Food Chem.

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An accurate, fast, easily applicable, and cost-effective method for the determination of nitrate and nitrite was developed. This method was much more reliable than the cadmium column reduction method, which is a tedious and time-consuming procedure and not easily applicable. The principle of the method was reduction of nitrate to nitrite with cadmium acetate solution and zinc powder and then treatment with Griess reagent. Recovery of the method changed from 92.9 to 102.8%, and detection limit was found as 31.4 mg/kg. Coefficient of variation was 3.16% for intraday precision. Nitrate and nitrite contents of 10 types of leafy vegetables native to the Aegean region of Turkey were determined. Wild radish, chicory, fennel, blessed thistle, blue mallow, and chard were analyzed for the first time. Nitrate contents were found between 354.8 mg/kg for iceberg lettuce and 4653 mg/kg for wild radish. Tested vegetables contained <26.33 mg/kg nitrite.

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Nitrate Analysis in Meats; Comparison of Two Methods

Cited by 13 publications

References 19 publications

Effect of Cultivar and Harvest Date on Nitrate (NO3) and Nitrite (NO2) Content of Selected Vegetables Grown Under Open Field and Greenhouse Conditions in Jordan

Effect of Cultivar and Harvest Date on Nitrate (NO3) and Nitrite (NO2) Content of Selected Vegetables Grown Under Open Field and Greenhouse Conditions in Jordan

Elevated levels of nitrate in rheumatoid arthritis

Development of a Cost-Effective Method for Nitrate and Nitrite Determination in Leafy Plants and Nitrate and Nitrite Contents of Some Green Leafy Vegetables Grown in the Aegean Region of Turkey

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