a.1.(Chem.) Pertaining to, or designating, an acid found in galipot, and isomeric with abietic acid.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Pimaric acid, 9[alpha]-13[alpha]- epidioxyabiet-8 (14)-en-18-oic acid, and 15-hydrooxydehydroabietic acid obtained from Anisochilus harmandii Doan ex Suddee & A.
One of its components, pimaric acid (PiMA), has been shown to suppress LPS-stimulated production of key inflammatory markers such as NO, [PGE.sub.2], IL-6 as well as the expression of iNOS and COX-2 (Kang et al.
Pimaric acid from Aralia cordata has an inhibitory effect on TNF-alpha-induced MMP-9 production and HASMC migration via down-regulated NF-kappaB and AP-1.
An important presence of dehidroabietic acid was also found in all the sampling stations of the BioBio Canyon except the most oceanic one (B-8), and even pimaric acid was present in one station (B-5), indicating probable deposition of higher plant resins (Volkman & Holdsworth, 1993; Bums et al., 2003).
Pimaric acid from Aralia cordata downregulates NF-[kappa]B and AP-1, leading to inhibition of ATF2 phosphorylation.
Chung et al., "Pimaric acid from Aralia cordata has an inhibitory effect on TNF-[alpha]-induced MMP-9 production and HASMC migration via down-regulated NF-[kappa]B and AP-1," Chemico-Biological Interactions, vol.
Compound sawdust sawdust 1 Hexanoic acid 0.5 0 2 Octanoic acid 0.4 2.2 3 Nonanoic acid 1.1 6.7 4 Decanoic acid 0 0 5 Dodecanoic acid 0.6 0 6 Tetradecanoic acid 0.9 4.6 7 Hexadecanoic acid 43.9 190.5 8 Heptadecanoic acid, anteiso 36.2 57.2 9 Octadecanoic acid 12.7 67.3 10 9-Octadecenoic acid 93.9 1,598.0 11 9, 12-Octadecadienoic acid 29.2 418.2 12 9, 12, 15 Octadecatrienoic acid 12.6 141.3 13 Docosanoic acid 16.5 39.7 14 Pimaric acid 77.7 1,253.5 15 Isopimaric acid 105.9 583.8 16 Abietic acid 77.9 2,426.1 17 Dehydroabietic acid 727.2 5,291.5 18 7-Oxodchydroabietic acid 172.6 986.3 Table 4.
The resin is a typical non-modified colophony resin, mainly composed by abietic and pimaric acids (90 wt%), with softening point of 73 [degrees] C.
Composition Value Neutral 10% Double-bonded acids type abielic 53% Dihydro-acids (types abietic and pimaric) 13% Tetrahydro-acids (containing pimaric type acids) 16% Dehydroabietic acids 2% Bicarbonate-soluble (oxidized acids) 6% Property Value Softening point 73 [degree] C Color (Warner) 8 Acid equivalent (g NaOH) 186 TABLE 2.
Rosin is mainly composed of five resin acids: abietic acid, neoabietic acid, palustric acid, pimaric acid, and isopimaric acid (Fig.
And the rosin resins are mainly composed of a mixture of C20 such as tricyclic fused-ring namely pimaric and abietic acids.