cinnamic acid


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cin·nam·ic ac·id

(si-nam'ik as'id),
Obtained from cinnamon oil, Peruvian and tolu balsams, or storax. Previously used in lupus as a paint and in infectious diseases to promote leukocytosis.

cinnamic acid

C9H8O2, an insoluble white powder derived from cinnamon. It is used as a flavoring agent in cooking and in the preparation of perfumes and medicines.
CAS # 140-10-3
See also: acid
References in periodicals archive ?
Cinnamic acid inhibits proliferation and modulates brush border membrane enzyme activities in Caco-2 cells.
The linearity of the developed method was assessed using seven concentrations: ephedrine, albiflorin, paeoniflorin, benzoic acid, PGG, glycyrrhizin (0.1~100 [micro]g/mL), methyl gallate, catechin, liquiritin, liquiritin apioside, cinnamic acid (0.05~50 [micro]g/mL), and schisandrin (0.02~20 [micro]g/mL) with correlation coefficients [R.sup.2] [greater than or equal to] 0.999.
Cinnamic acid fingerprinting (ODS C18, 150 x 4.6mm i.d., 5 [micro]m, Agilent) was performed with acetonitrile: 1% acetic acid-distilled water (22: 78) (solvents were used after degassing via ultrasonication), flow rate: 1 mL/min, column temperature: 35[degrees]C, wavelength: 280 nm, detector: UV).
Celemli (24) has reported compounds belong to alcohols, aldehydes, aliphatic acids and their esters, carboxylic acids and their esters, cinnamic acids and their esters, ethers, flavonoids, hydrocarbons, ketones and terpenes in different propolis samples.
Peak Retention time (min) Compounds Molecular mass 1 7.95 Vanilic acid 168 2 8.64 Caffeic acid 180 3 10.44 Vanillin 152 4 13.48 p-Coumaric acid 164 5 17.28 Ferulic acid 194 6 19.99 Benzoic acid 122 7 35.33 Quercetin 302 8 36.68 Luteolin 286 9 40.01 Cinnamic acid 148 10 42.62 Apigenin 270 Peak EEP-S (mg/g) EEP-M (mg/g) 1 -- 5.9 [+ or -] 0.1 2 -- 6.1 [+ or -] 0.2 3 5.5 [+ or -] 0.2 5.7 [+ or -] 0.1 4 6.3 [+ or -] 0.2 6.1 [+ or -] 0.2 5 5.4 [+ or -] 0.2 6.1 [+ or -] 0.2 6 6.8 [+ or -] 0.2 6.9 [+ or -] 0.1 7 -- 9.9 [+ or -] 0.2 8 -- 1.3 [+ or -] 0.1 9 13.4 [+ or -] 0.4 13.2 [+ or -] 0.3 10 -- 15.6 [+ or -] 0.4 * Compound was confirmed by comparison of standard.
Cinnamon primarily contains vital oils and other derivatives, such as cinnamaldehyde, cinnamic acid and cinnamate (Rao and Gan 2014).
Effects of cinnamic acids on bacterial community diversity in rhizosphere soil of cucumber seedlings under salt stress.
Methanol extract Aqueous extract Coumpounds RT Concentration Concentration mg/kg CS mg/kg CS Gallic acid 2.051 122.26 383.20 Gentisic acid 4.386 45.46 18.03 Catechin 6.139 899 143.15 4-hydroxy 6.123 3.882 -- benzoic acid Protocatechuic 6.982 19.96 9.869 acid Rutin 9.496 211.253 45.95 Ferullic acid 11.164 9.121 -- Apigenin-7- 12.303 11.697 -- glucoside Cinnamic acid 15.703 66.526 -- Table 3: Antibacterial activity of Cistus salvifolius methanol and aqueous extracts against Gram-positive and Gram-negative bacteria.
A mixture of cinnamic acid (1000 mg, 3.78 mmol, 1eq.), 3-4 drops of anhydrous DMF, and 20 mL of thionyl chloride was heated at reflux for 3 h, under Ar.
This reaction mechanism can be explained in another approach, in which triacetylborate (vii) and glycerol (viii) react together to form an intermediate by losing two acetate molecules and combine with cinnamic acid (4), where the boron loses its third acetate molecule and accepts electrons from the oxygen atom of cinnamic acid and forms intermediate (x), which is further reacts with o-pheneylenediamine (1) and undergoes intramolecular cyclisation to form the final product (3) (Scheme 4).
Among the topics are relative humidity and evaporation of a simple fragrance emulsion, unusual phase behavior in a two-component system, the phase separation study of the surface-active drug promazine hydrochloride in the absence and presence of organic additives, polymer-modified microemulsions as a new type of template for nanoparticle formation, the synthesis and size-dependent photocatalytic behavior of luminescent semiconductor quantum dots, and temperature-dependent structural insignia of cinnamic acid. There is no index.
Herein, we introduce the cinnamate group by grafting cinnamic acid onto PVA to prepare the amphiphilic graft polymer poly(vinyl cinnamates) (PVCi) and study its self-assembly behavior in selective solvent (Fig.