Acid Lignoceric

Rice-Bran Wax. Rice-bran wax [8016-60-2] is extracted from cmde rice-bran oil. It can be degummed, the fatty acid content reduced by solvent extraction, and bleached. The wax is primarily composed of esters of lignoceric acid (43 wt %), behenic acid (16 wt %), and 22 02 alcohols (28 wt %). Rice-bran wax may be used in some food apphcations under the regulations described in 21 CFR 172.890. 

Tetracosanoic (lignoceric) acid [557-59-5] M 368.7, m 84 , 87.5-88 , pKes, -5.0. Crystd from acetic acid, Mc2CO, toluene, pet ether/Me2CO, C6H6/Mc2CO. 

The most frequently described components of coffee wax are the N0-alkanoyl-5-hydroxytryptamides (Figure 16). The range of concentration found on sampling 14 varieties was 401 to 1,099 ppm of the total coffee bean.139 The relative concentrations of three of the four major 5-hydroxytryptamides are 22.5 to 39.9% with arachic, 49 to 68.9% with behenic, and 7.7 to 12% with lignoceric acids.139 The fourth major acid involved is stearic.137 The predominance of Np-behenoyl-5-... 

Odd numbered carbon alkanes, abundant palmitic acid, tetracosenoic (lignoceric) acid, palmitate esters, long chain alcohols Beeswax [11,23,27]... 

Benzene solutions of lignoceric (CH3(CH2)->2COOH) and stearic (CH3(CH2)i6COOH) acids with concentrations of 1 X 10 3 and 3 x 10-3 mol-L1, respectively, were spread on the pure water surface atTsp of 293 K. Since Tsp is below Tm of the lignoceric acid (Tm - 347 K) and the stearic acid (Tm =317 K) monolayers [31] those monolayers are in a crystalline state. The subphase water was purified with the Milli-QII system. The lignoceric acid monolayer was prepared at a surface pressure of 5 mN-m 1 by a continuous compression at a rate of 1.7 X 10 3 nm--molecule 1 s 1. The stearic acid monolayer was prepared at 23 mN-m-1 by the continuous compression method or the multi-step creep method [39]. The multi-step creep method is a monolayer preparation method for which the monolayer is stepwisely compressed up to a... 

AFM observation of lignoceric acid crystalline monolayer prepared by a continuous compression method. 

Fig. 27. Nonfiltered AFM image of a lignoceric acid monolayer on a scan area of 9x9 nm2. Note a two-dimensional periodic structure with locally disordered molecular arrangements which is marked by a circle.

Direct observation of edge dislocation in lignoceric acid monolayer based on atomic force microscopy. 

Machilus thunbergii Sieb. et Zucc. Hong Nan (bark, root) dl-N-noramepavine, quercetin, N-norarmepavine, reticuline, lignoceric acid, dl-catechol.57 Remove eczema, treat splean and stomach disease, asthma. 

Sinapis alba L. Bai Jie (Mustard) (leaf) Arachidic acid, erucic acid, lignoceric acid, linoleic acid, myrosinase, phosphatase, sinalbine.50 Carminative, toothache, seal eruptions and ulcers. 

Formic acid Acetic acid Propionic acid Butyric acid Capric acid Palmitic acid Palmitoleic acid Stearic acid Oleic acid Linoleic acid -jLinolenic acid Arachidonic acid Lignoceric acid Nervonic acid... 

Caprylic acid 5-7% Oleic acid 4-8% Stearic acid 2-5% Arachidic acid 1 % Palmitoleic acid 0.4% Unsaturatcd acids 8% Saturated acids 92% (Approximate) Palmitoleic acid 1% Myristic acid 1%— Capric acid 0.5% Linolenic acid 0.4% Launc acid 0.4% Arachidic acid 0.2% Unsaturated acids 73% Lignoceric acid 1.5% Steaiic acid 1.5-3.0% Arachidic acid 1.5-2.5% Myristic 0.2% Unsaturatcd acids 82% Saturated acids 18% (Approximate) Saturated acids 27% (Approximate) Myristic acid 0.8-1.5% Linoleic acid 1-3% Palmitoleic acid 0.2-0.4% Arachidic acid 0.2-0.4% Unsaturatcd acids 50% Saturated acids 50% (Approximate) There are some significant differences m composition of palm oil (from fleshy fruit pulp) and palm kernel oil. 21 content. 

Lignoceric acid 24 0 Tetracosanoic acid Small amounts in most fats... 

Higher fatty acids such as lignoceric acid (24 0) and behenic acid (22 0) are found in high concentrations in brain sphingolipids. Finally, evidence exists for... 

Lignoceric acid n-Tetracosanoic acid 24 Brain, camauba wax... 

Glyceryl Behenate Glyceryl behenate is a mixture of glycerides of fatty acids which is obtained by esterification of glycerin with behenic acid. It may also contain arachidic acid, stearic acid, erucic acid, lignoceric acid, and palmitic acid. It is available as a waxy mass or powder, possesses a faint odor, and is white in color. It is... 

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