Reversed-phase ion-pair chromatography was used to detect 11 preservatives including bronopol, esters of p-hydroxybenzoic acid (PHBA) in cosmetics. Zorbax C8 column was used and mobile phase was V (0.05 mol/L NaH2PO4):V(methyl alcohol):V(acetonitrile) = 50:35:15 with addition of hexadecyltrimethylammonium chloride (2 mmol/L) and the pH adjusted to 3.5 by using phosphoric acid. The wavelength 254 nm was selected for detection. Samples were extracted with methanol by ultrasonic method. The recoveries were 85%-107% and the relative standard deviations were 2.2%-7.5%.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Toxic Anterior Segment Syndrome: A 2012-2022 Update on the Most Common Causes.
J Cataract Refract Surg
January 2025
Intermountain Ocular Research Center, Department of Ophthalmology and Visual Sciences, John A. Moran Eye Center, University of Utah, Salt Lake City, Utah.
Purpose: To identify trends in the reporting of toxic anterior segment syndrome (TASS) to the American Society of Cataract and Refractive Surgery (ASCRS) TASS Force from 2012-2022.
Setting: John A. Moran Eye Center, University of Utah, Salt Lake City, UT, USA.
The Effect of Perineural Adjuvants on Superficial Parasternal Intercostal Plane Blocks in Cardiac Surgery: A Triple-Blinded Randomized Controlled Feasibility Trial.
Cureus
December 2024
Department of Anesthesiology, Wake Forest School of Medicine, Winston Salem, USA.
Background and aim The study aimed to investigate the effect of adding perineural adjuvants, clonidine and dexamethasone, to local anesthetic in Superficial Parasternal Intercostal Plane (SPIP) blocks. It was designed as a prospective, randomized, triple-blinded, feasibility trial, conducted at a single-center university hospital. The participants included adult patients who were undergoing cardiac surgery via median sternotomy.
View Article and Find Full Text PDFSpoilage investigation of pasteurized apple juice with visual defects identifies a potentially novel Acetobacter species as the primary spoilage agent.
Int J Food Microbiol
January 2025
Department of Food Science, Cornell University, Ithaca, NY 14853, United States.
Jellified materials were observed in spoiled pasteurized apple juice that contained dimethyl dicarbonate (DMDC). Microbiological analysis showed a high microbial load (4-5 log CFU/mL) in the sample. Acetobacter spp.
View Article and Find Full Text PDFAllergens Responsible for Contact Allergy in Children From 2010 to 2024: A Systematic Review and Meta-Analysis.
Contact Dermatitis
January 2025
Department of Dermatology and Allergy, Herlev and Gentofte-Copenhagen University Hospital, Copenhagen, Denmark.
Contact allergy (CA) is a frequent condition in children; however, newer estimates of the prevalence of CA in children are lacking. Herein, we aim to provide an estimate of the prevalence of CA in children from 2010 to 2024. Two authors independently searched PubMed, Embase and Web of Science for studies reporting the prevalence of positive patch tests (PPTs) to allergens in populations including ≥ 100 children (< 18 years).
View Article and Find Full Text PDFAOPs to connect food additives' effects on gut microbiota to health outcomes.
ALTEX
January 2025
Laboratory of Hepato-Gastroenterology, Institute of Experimental and Clinical Research, UCLouvain, Brussels, Belgium.
The gut microbiota is unanimously acknowledged as playing a central role in human health, notably through the production of various metabolites, including short-chain fatty acids, secondary bile acids, vitamins or neurotransmitters. Beyond contributing to gut health itself, these microbial metabolites significantly impact multiple organ systems by participating in key signaling pathways along the well documented gut-organ axes. Chemicals ingested through food might interact with our gut microbiota, altering metabolites production with consequences on health.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!