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Benzoic acid

About: Benzoic acid is a research topic. Over the lifetime, 11832 publications have been published within this topic receiving 167127 citations. The topic is also known as: Retardex & E210.


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Journal ArticleDOI
TL;DR: The optimization of reversed-phase high-performance liquid chromatographic separation by the simultaneous variation of pH and solvent strength (%B) was studied for acidic and basic samples and the combination of these two variables was expected to be more useful than either variable alone.

69 citations

Journal ArticleDOI
TL;DR: Overall, the results presented in this study show that the proposed integrated microfluidic paper-based chip platform provides a compact and reliable tool for benzoic acid concentration measurement purposes.

69 citations

Journal ArticleDOI
TL;DR: In this article, a technique of combining poly(ethylene-co-methacrylic acid), PEMA, with benzoic acid and sorbic acid to form antimicrobial food packaging material was developed.
Abstract: A technique of combining poly(ethylene-co-methacrylic acid), PEMA, with benzoic acid and sorbic acid to form antimicrobial food packaging material was developed. Heat-pressed film was first modified with NaOH (1 mol/L) or HCl (1 mol/L) and then incorporated with benzoic acid and sorbic acid, respectively, by using acetone as a swelling agent. The incorporation of preservatives into fabricated antimicrobial films was confirmed by characterization of the specific vibrational stretching shown on the IR spectra of the resulting films. Sodium hydroxide and preservative-treated films exhibited dominantly antimicrobial properties in fungal growth inhibition tests, presumably due to the higher amount of preservatives released from the films (75 mg benzoic acid or 55 mg sorbic acid per g of film) than other types of films. Based on the results, we demonstrated that the combination technique with acetone as swelling agent was feasible to manufacture antimicrobial food packaging films.

68 citations

Journal ArticleDOI
TL;DR: Enhancing atom economy of the metal-catalyzed asymmetric allylic alkylation shifts from the usual nucleophilic displacement of a leaving group to an addition of a pronucleophile to a double bond with excellent regioselectivity and enantiomeric excess under optimized conditions.
Abstract: Enhancing atom economy of the metal-catalyzed asymmetric allylic alkylation (AAA) shifts from the usual nucleophilic displacement of a leaving group to an addition of a pronucleophile to a double bond. Using 1-alkoxyallenes as proelectrophiles, the palladium-catalyzed AAA proceeds with 1,3-dicarbonyl compounds as pronucleophiles with excellent regioselectivity and enantiomeric excess under optimized conditions. The pH of the medium proved crucial for reactivity/ selectivity. By using the more acidic Meldrum's acids, the reactions required a co-catalytic amount of Bronsted acid. such as trifluoroacetic acid. Single regioisomeric products of 82-99% ee were obtained. On the other hand, the less acidic 1,3-diketones failed to react under such conditions. The fact that a less acidic acid like benzoic acid sufficed, suggested the need for general base catalysis as well. Thus, a mixture of triethylamine and benzoic acid proved optimal (ee's 93-99). Employment of the (/?,/?)-phenyl Trost ligand gave a product with S configuration. A model to rationalize the results has been developed.

68 citations

Journal ArticleDOI
TL;DR: In this paper, a headspace solid-phase microextraction (HS-SPME) method was developed for the simultaneous determination of sorbic and benzoic acids in beverages, where the analytes were collected from the headspace by using a 65-μm polydimethylsiloxane-divinylbenzene (PDMS-DVB) coated fiber and determined by gas chromatography with flame ionization detector (GC-FID).

68 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023207
2022519
2021217
2020279
2019315
2018332