Results 251 to 260 of about 9,300 (298)
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Journal of Pharmaceutical and Biomedical Analysis, 1992
A flow injection analysis (FIA) procedure is described for the determination of chlorocresol in a parenteral pharmaceutical formulation. The product is directly injected into a carrier stream of water and subsequently reacted with a reagent stream of nitrous acid. The resulting brown nitro-derivative is determined spectrophotometrically at 400 nm.
M S, Bloomfield, K A, Prebble
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A flow injection analysis (FIA) procedure is described for the determination of chlorocresol in a parenteral pharmaceutical formulation. The product is directly injected into a carrier stream of water and subsequently reacted with a reagent stream of nitrous acid. The resulting brown nitro-derivative is determined spectrophotometrically at 400 nm.
M S, Bloomfield, K A, Prebble
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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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Cyanobacteria as potential food preservatives and pharmaceutical supplements
2021178
Jerez Martel, Idaira +6 more
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A History of Pharmaceutical Preservation in the United Kingdom
2016Three independent branches of research (contagion, vaccination, and basic research on germs) came together in the latter part of the 19th century to formulate the ‘‘germ theory of disease’’ and to herald in what is often termed ‘‘the golden age of microbiology’’ from around 1875 to 1900.
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Journal of Applied Bacteriology, 1993
Three rapid microbiological methods, impedance, the direct epifluorescence technique (DEFT‐MEM) and ATP bioluminescence (ATP‐B) were evaluated for their applicability to preservative efficacy testing (PET) of pharmaceuticals and cosmetics.
P, Connolly +2 more
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Three rapid microbiological methods, impedance, the direct epifluorescence technique (DEFT‐MEM) and ATP bioluminescence (ATP‐B) were evaluated for their applicability to preservative efficacy testing (PET) of pharmaceuticals and cosmetics.
P, Connolly +2 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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Journal of Separation Science, 2005
AbstractPreservatives are used to protect pharmaceutical formulations from microbial attack during the period of administration to the patient. Because of their biological activity, preservatives have to be identified and assayed according to the same rules as apply to active components. A number of methods for separation of preservatives are reported,
Małgorzata, Jaworska +2 more
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AbstractPreservatives are used to protect pharmaceutical formulations from microbial attack during the period of administration to the patient. Because of their biological activity, preservatives have to be identified and assayed according to the same rules as apply to active components. A number of methods for separation of preservatives are reported,
Małgorzata, Jaworska +2 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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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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PRESERVATIVES IN PHARMACEUTICAL INDUSTRY
2023Prof. (Dr.) Yesh Partap Singh Rana +1 more
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