Decanoic add

Of the fatty adds, nonanoic and decanoic add were the most abundant in the concentrate of fraction FI. Ha and Lindsay (54) postulated that maity of the volatile adds present in beef tallow contributed to the desirable flavor of deep-fiied potatoes. 

Hexanoic, heptanoic, nonanoic and decanoic adds were the most predominant fatty adds in heated pork fat Nonanoic add was the most abundant Fraction FI for the 207 bar/50°C extract was highly concentrated compared to other fractions. 

Volatile fatty acids p resent in wine may derive from the anabolism of lipids, resulting in compounds with even number of carbon atoms, by oxidative decarboxylation of a-keto acids or by the oxidation of aldehydes. Volatile fatty acids synthesised from a-keto acids are mainly propanoic add, 2-methyl-l-propanoic acid (isobutyric acid), 2-methyl-l-butanoic acid, 3-methyl-l-butanoic acid (isovaleric acid 3-methylbutyric add) and phenylacetic add. From lipid metabolism, the following fatty acids are reported butanoic add (butyric), hexanoic acid (caproic), odanoic acid (caprylic) and decanoic add (capric) (Dubois, 1994). Although fatty adds are charaderized by unpleasant notes (Table 1), only few compounds of this family attain its perception threshold. However, their flavour is essential to the aromatic equilibrium of wines (Etievant, 1991). 

HFA of CJ) (55,115)-dihydroxy-4-oxo-tetra-decanoic add HFA of E (55)-acetoxy-(115)-hydroxy-4-oxo-tetrade-canoic acid... 

D 1 Decanedioic add. See Sebacic acid. D 2 Decanoic add, lO-amino-, polyamide... 

Organic acid, alcohol and ether, for example decanoic add, 1-tetradecanol, and phenyl ether, at proper phase change temperature, can also be used as PCMs. 

Synonyms Decanoic add, monoester with triglycerol Triglyceryl monocaprate Definition Ester of capric acid and polyglycerln-3... 

Synonyms Decanoic add, mixed pentaesters with octadecanolc add and Irlglyc-erol... 

Myristic acid (from decanoic acid and methyl hydrogen adipate). Dissolve 55-2 g. of pure decanoic acid (capric acid decoic acid), m.p. 31-32°, and 25 -6 g. of methyl hydrogen adipate in 200 ml. of absolute methanol to which 0-25 g. of sodium has been added. Electrolyse at 2-0 amps, at 25-35° until the pH of the electrolyte is 8-2 (ca. 9 hours). Neutralise the contents of the electrolytic cell with acetic acid, distil off the methanol on a water bath, dissolve the residue in about 200 ml. of ether, wash with three 50 ml. portions of saturated sodium bicarbonate solution, and remove the ether on a water bath. Treat the residue with a solution of 8 0 g. of sodium hydroxide in 200 ml. of 80 per cent, methanol, reflux for 2 hours, and distil off the methanol on a water bath. Add about 600 ml. of water to the residue to dissolve the mixture of sodium salts extract the hydrocarbon with four 50 ml. portions of ether, and dry the combined ethereal extracts with anhydrous magnesium sulphate. After removal of the ether, 23-1 g. of almost pure n-octadecane, m.p. 23-24°, remains. Acidify the aqueous solution with concentrated hydrochloric acid (ca. 25 ml.), cool to 0°, filter off the mixture of acids, wash well with cold water and dry in a vacuum desiccator. The yield of the mixture of sebacic and myristic acids, m.p. 52-67°, is 26 g. Separate the mixture by extraction with six 50 ml. portions of almost boiling light petroleum, b.p. 40-60°. The residue (5 2 g.), m.p. 132°, is sebacic acid. Evaporation of the solvent gives 20 g. of myristic acid, m.p. 52-53° the m.p. is raised slightly upon recrystallisation from methanol. 

Capric add (decanoic acid) CH3(CH2)sCOOH Goat fat L caper, goat... 

By increasing the molar proportion of the monocarboigrlic acid, the yield of (II) is improved. Thus electrolysis of a mixture of decanoic acid (n-decoic acid capric acid) (V) (2 mols) and methyl hydrogen adipate (VI) (1 mol) in anhydrous methanol in the presence of a little sodium methoxide gives, a r hyc lysis of the esters formed, n-octadecane (VII), tetradecanoic or myristic add (VIII) and sebacic acid (IX) ... 

Petroselinic acid, 6-octadecenoic acid Erucic acid, 13-docosenoic acid Capric acid, decanoic acid 5,11,14-Eicoatrienoic add 5,13-Docosadienoic acid y-Linolenic acid, 6,9,12-octadecatrienoic acid ds,cis,irans-9,ll,13-Octadecatrienoic acid irans,irans,cis-8,10,12-Octadecatrienoic acid 9,11,13,15-Octadecatetraenoic acid Isanic acid, octadeca-17-en-9,ll-diynoic acid Malvalic, sterculic acids (Figure 11.1)... 

Lactobacillic add [10-((l/ ) -c/s-2-hexylcyclopro-pyl)-decanoic acid, (llif,125)-l 1,12-methylenocta-decanoic acid]. 

Analysis of data in Table 2 reveals that as all naphthenic adds are not persistence, bioacculumative and toxic (Fish ChV), but some compounds are exception about their chronic toxic. The compoimds with moderate toxic (0.1-10 mg/1) are decanoic and cyclohexanepentanoic acids. 

S nva = n-valeric acid iva = isovaleric acid taa = trimethylacetic acid era = crotonic add tga = tiglic acid Saturated straight-chain fatty acids nha = -hexandc acid (caproic add), noa = n-octanoic acid (capryUc add), nda = n-decanoic acid (capric acid), 7-hda = 7-hydroxydecanoic acid, ndoa = n-dodecandc add (lauric acid) nhda = n-hexadecanoic acid (palmitic add), noda = n-octadecanoic add (stearic add), neia = n-eicosanoic acid (arachidic acid)... 

---