Results 261 to 270 of about 24,737 (293)
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Challenge testing — the laboratory evaluation of the preservation of pharmaceutical preparations
Antonie van Leeuwenhoek, 1981The need for adequate preservation and the difficulties of definition and testing are outlined and pharmacopoeial challenge tests are compared. While similar in principle they differ in detail and in the interpretation of results. The USP test is intended for multi-dose sterile products but BP and draft EP tests include also criteria for topical and ...
D. F. Spooner, B. Croshaw
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Storage of natural water samples and preservation techniques for pharmaceutical quantification
Talanta, 2013In order to perform a human and ecological risk assessment of pharmaceutical products (PPs) in natural waters, it is necessary to accurately quantify a broad variety of PPs at low concentrations. Although numerous currently implemented analytical methodologies, less is known about the preservation of PPs in natural water samples within the period ...
Mompelat, S. +3 more
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Cyanobacteria as potential food preservatives and pharmaceutical supplements
2021178
Jerez Martel, Idaira +6 more
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[Pharmaceutical Treatment Options in Heart Failure with Preserved Ejection Fraction].
Deutsche medizinische Wochenschrift (1946), 2021Heart Failure causes an enormous individual and societal burden of disease with severe symptoms, a reduction in activities of daily life, frequent hospitalizations and poor prognosis. The field of heart failure with reduced ejection fraction has seen substantial innovation in the past years. Novel and successful treatment regimens were established, the
Tobias Daniel, Trippel +1 more
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Detection of preservatives in pharmaceutical and cosmetic products using agar gel electrophoresis
Journal of Chromatography A, 1978A method is described using high voltage agar gel electrophoresis for the separation and microbiological detection of preservatives in pharmaceutical and cosmetic products. The positions of the preservatives were detected as zones of inhibition of a test organism within the nutrient agar gel and can be characterised by their migration, shape and ...
K E, Moore, R J, Stretton
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Journal of Pharmaceutical Sciences, 1983
A specific stability-indicating reverse-phase high-performance liquid chromatographic analytical method has been developed to quantitate the antimicrobial preservatives methylparaben, propylparaben, butylparaben, sorbic acid, and benzoic acid in a series of typical pharmaceutical formulations.
T P, Radus, G, Gyr
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A specific stability-indicating reverse-phase high-performance liquid chromatographic analytical method has been developed to quantitate the antimicrobial preservatives methylparaben, propylparaben, butylparaben, sorbic acid, and benzoic acid in a series of typical pharmaceutical formulations.
T P, Radus, G, Gyr
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Determining the efficacy of preservatives in pharmaccutical products
Journal of the American Pharmaceutical Association (Scientific ed.), 1955A standardized method of testing the efficacy of preservatives in pharmaceutical products is presented. The test consists of the addition of a predetermined number of microorganisms of different species to the product, incubation of the contaminated test material, and sampling at fixed time intervals to determine whether growth of the organisms occurs ...
E J, RDZOK +3 more
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Advancements in Analytical Techniques for Preservative Identification in Pharmaceuticals
Current Drug Research ReviewsIntroduction: Preservatives are widely used chemical agents that inhibit microbial growth and extend the shelf life of food and pharmaceutical products. However, growing concerns over the potential adverse effects of synthetic preservatives, such as parabens and benzoates, have emphasized the need for precise and reliable analytical methods for their ...
Shefali Mehla +3 more
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Journal of Pharmaceutical Sciences, 1961
Pharmaceutical formulations similar to simple syrups near neutral pH are difficult to preserve against microbial spoilage, which sometimes require high concentrations of preservatives, e. g., parabens. Since high preservative concentrations injure formulations' palatability, inclusion of an appropriate potentiator would be helpful.
P S, PRICKETT, H L, MURRAY, N H, MERCER
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Pharmaceutical formulations similar to simple syrups near neutral pH are difficult to preserve against microbial spoilage, which sometimes require high concentrations of preservatives, e. g., parabens. Since high preservative concentrations injure formulations' palatability, inclusion of an appropriate potentiator would be helpful.
P S, PRICKETT, H L, MURRAY, N H, MERCER
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The use of impedance for preservative efficacy testing of pharmaceuticals and cosmetic products
Journal of Applied Bacteriology, 1994Impedance was investigated for its applicability to preservative efficacy testing of pharmaceuticals and cosmetics. A good correlation between impedance detection time ( Td ) and total colony counts (colony‐forming units (cfu) was obtained for untreated suspensions of ...
P, Connolly +2 more
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