propanoic acid

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pro·pi·on·ic ac·id

(prō'pē-on'ik as'id), Avoid the misspelling/mispronunciation proprionic.
Methylacetic acid; ethylformic acid; found in sweat; elevated in cases of ketotic hyperglycinemia and in cases of biotin deficiency.
Synonym(s): propanoic acid

propanoic acid

(prō′pə-nō′ĭk)
n.
See propionic acid.
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Also in this case, as for nano-calcium carbonate, it was possible to dissolve the deacidifier in a solvent unable to dissolve the normal calcium propanoate. In the tests on original documents, a concentration of 3% w/v of nanopropanoate in propan-2-ol was used, and the product was applied by brushing it from the recto side of the documents.
(b) Laboratory iron-gall ink before and after treatment with calcium propanoate. All the typical peaks of the ink (around 576 [cm.sup.-1]: band related to the formation of iron-cellulose complex; 1431 [cm.sup.-1]: COO- sym.
pH before treatment pH after treatment Paper: 6.5 [+ or -] 0.1 Paper: 10.1 [+ or -] 0.1 Ink: 5.1 [+ or -] 0.1 Ink: 9.9 [+ or -] 0.1 Colour coordinates before Colour coordinates after treatment treatment Paper: Paper: L* = 91.79 [+ or -] 0.12 L* = 90.39 [+ or -] 0.36 a* = +0.08 [+ or -] 0.02 a* = +0.19 [+ or -] 0.03 b* = +11.15 [+ or -] 0.18 b* = +10.85 [+ or -] 0.14 Ink: Ink: L* = 63.87 [+ or -] 1.63 L* = 69.34 [+ or -] 1.25 a* = +1.05 [+ or -] 0.82 a* = +3.02 [+ or -] 0.89 b* = +14.66 [+ or -] 0.54 b* = +13.52 [+ or -] 1.24 TABLE 2: Treatments of laboratory paper samples with calcium propanoate in ethanol.
Transparent colorless methyl 3-(1-imidazolyl) propanoate was obtained.
According to this claim and the graph of the variables (Figure 4), the compound mainly responsible for differentiation (axis 1) is 1-methylbutyl propanoate. In regard to the axis 2, the compound is more akin to decanoic acid.
Salmon [32] claims that when two yeasts grow and ferment in the same medium simultaneously, exchanges of metabolites among them can take place, causing sensitive modifications to kinetic properties of each of the strains, and also can cause significant changes to the end products of fermentations; that is, interactions can increase the concentration of aromatic compounds and/or make new compounds form, which is consistent with the finding in this study, as it has increased production of 1-methylbutyl propanoate and decanoic acid as shown in Table 5.
According to the PCA variable selection, the main compounds that differ in the treatments in mixed culture, where the ICV K1 and T306 strains are involved, are 1-methylbutyl propanoate, 3-methylbutyl-3-methylbutanoate, 3-phenyl-2-propenal, (E)-4-[(5R)-5,6,6-trimethylcyclohexene-1-yl]but-3-en-2-one, and ethyl laurate.
[31] and to Figure 6, we can say that axis 3 has more relation with the compound 1-methylbutyl propanoate, with a variance of 5.8%.
In this case, according to PCA, seven are the compounds that differ in the treatments: 3-methyl-1-butanol, 3methylbutyl propanoate, 3,7-dimethyl-2,6-octadien-1-ol, 3-methylbutyl butanoate, 3-methylbutyl-3-methylbutanoate, 3-phenyl-2-propenal, and dodecanoic acid.
To a solution of ethyl-2(4-isobutylphenyl) propanoate (1g, 4.27 mmol) in 6mL of C[H.sub.3] OH a solution of KOH was added (479 mg, 8.55 mmol) in 5 mL of [H.sub.2]O.
Mesylation and tosylation of ethyl lactate in the presence of triethylamine or pyridine at room temperature afforded the corresponding ethyl-2-(methylsulphonyloxy) propanoate (3) and ethyl2-(tosyloxy) propanoate (4).
As expected, genes encoding the enzymes of gluconeogenesis and propanoate metabolism were more highly expressed in liver than mammary tissues.