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Showing 1 to 16 of 16 for “"Microbiological assay"”.
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Microbiological assay variables for determining vitamin B-6 content of chicken muscle
Call number: LD2668 .T4 1986 M37
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Hybrid Opto-Electrokinetic Technique For Micro/nanomanipulation: Towards Application Of A Novel Non-Invasive Manipulation Technique In Microbiological Assay
… the realization of a high performance on-chip bioassay system.</p>
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Uracil Accumulation Response To Folate Depletion Is A Function Of Dna Repair Imbalance That May Be A Mechanism Of Aging
… activity, uracil level in DNA, and through microbiological assay to determine the folate level, elucidates mechanism of uracil accumulation response to folate depletion. The findings present folate deficiency status affects the uracil DNA glycosylase activity, and uracil initiated DNA base …
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A compatibility profile of selected therapeutic agents in balanced electrolyte solutions
… agents. Visual, spectrophotometric and microbiological assay techniques are to be used to establish the compatibility profiles of these admixtures.</p>
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Investigating the provision of vitamin B₁₂ in the Micro-Ecological Life Support System Alternative (MELiSSA) loop for long-distance space exploration using algal-bacterial cocultures.
… comprises three main sections. Firstly, a novel microbiological assay for the quantification of vitamin B₁₂ is developed, which is able to distinguish between certain lower axial ligands of the vitamin. The novel microbiological assay relies on the ability of the green alga *Chlamydomonas …
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Aminoaciduria in childhood
… the plasma and that of the urine. In some cases microbiological assay has been used to establish the plasma level of certain aminoacids more exactly than was possible by paper chromatography. [From p92, Summary and conclusions] The main diseases investigated were: Lignac-Fanconi disease …
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Spectrophotometric and microbiological determination of the stability of sodium ampicillin as affected by pH
… measurements were to be accomplished through a microbiological assay after adding ampicillin sodium to different buffer solutions. At the end of four hours, eight hours, and twelve hours, a quantitative determination was made to indicate to amount of ampicillin that is lost through chemical …
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Influence of vitamin B-6 intake on vitamin B-6 status of lactating women and on the vitamin content of their milk: enzymatic, microbiological, and HPLC techniques
… in the unsupplemented group as determined by microbiological assay and HPLC. There were significant correlations between data obtained by the microbiological and HPLC analyses for pyridoxal and total vitamin B-6 concentrations. Pyridoxal was the predominant B-6 vitamer found in human milk. …
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Effects of ingestion of milk and methionine on blood levels of tryptophane and methionine in dairy calves
… of tryptophane and methionine were determined by microbiological assay. It was found that the blood plasma levels of tryptophane and methionine varied considerably at different time intervals after feeding milk. One calf was fed 50 grams dl-methionine with its regular feed of milk, and series of …
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A study of the protein metabolism of a two-year old on two levels of plant protein intake
… Acid Analyzer. Tryptophan was determined by microbiological assay. Nitrogen in the diets averaged 3.96 and 2.69 gm. respectively for the two protein levels of 24 and 16 gm. daily with retention of 0.33 gm. daily for all periods, or 0.48 gm. and 0.44 gm. for the test periods. The essential …
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Metabolism and Handling of Folates in the Mammal Especially Man
… studied in humans. Aseptic addition methods of microbiological assay with L.casei, S.faecalis, P.cerevisiae and bioautographic techniques were employed in investigations of serum and urine folates. Studies of normal human serum and urine showed them to contain four folates, …
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The bioavailability of folic acid in pectin - coated fortified rice in humans using stable isotope techniques
… diet (112±12 μg/day) - verified using L.casei microbiological assay - during the AUC and for 24 hours prior. Optimisation of the pectin-coated rice premix gave folic acid coating and cooking losses of 33.5% and 15.5% respectively. The mean test dose error per 400μg folic acid was ± 26 μg. …
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Studies on the stability and activity of polymyxin B solutions.
… between the chemical stability and the microbiological activity of polymyxin B in phosphate buffer pH 6.0 and in proprietary eye drops was evaluated. High Performance Liquid Chromatography (HPLC) was used to quantify the amount of the main components in samples stored at 43,50,55 and …
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Aspects of Folate and Tetrahydrofolate Chemistry and Metabolism in the Rat
… done using unlabelled folates, analysis being by microbiological assay. This method is not highly specific or quantitatively accurate: this thesis reports results on the synthesis of 14 c- labelled folates, and the use of these compounds in investigation of folate metabolism in the rat. The …
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The reaction of ethylene oxide with some proteins, amino acids and vitamins
… cases, only one or two of these amino acids. Microbiological assay confirmed a reduction in the biological availability of 11% to 83% of the histidine, 6% to 55% of the methionine and 51 to 92% of the lysine, depending on the protein and the amount of moisture present during fumigation. …