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, diacetal (dī-as'ĕ-til, dī-as'ĕ-tăl),
A yellow liquid, (CH3CO)2, having the pungent odor of quinone and carrying the aromas of coffee, vinegar, butter, and other foods; a byproduct of carbohydrate degradation.
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Both the crude fat (0.63<r<0.70, p<0.001) and reducing sugar contents (0.39<r<0.57, p<0.05) were positively correlated with several volatile compounds, including acetaldehyde, 3-methyl butanal, 2,3-butanedione, and 3-hydroxy-2-butanone (Table 6).
A, Typical chart record showing the effect of 30 mM 2,3-butanedione monoxime (BDM) on the contraction induced by 5 mM eugenol in rat atria.
Bronchial Fibrosis in Rats Exposed to 2,3-Butanedione and 2,3-Pentanedione Vapors [oral presentation].
DOCKING COMPLEX CLUSTERS E MAX E MIN Collagen & 1-bromo-2,5- 30 -69.90 -87.25 pyrrolidinedione Collagen & 2,3-butanedione 14 -157.71 -189.43 dioxime Collagen & 2-ethyl-1,2- 87 -225.58 -257.79 diphenyl-1-butanol Collagen & 5-methyl-2- 16 -182.34 -223.21 phenyl-2,4-dihydro-3H- pyrazol-3-one Collagen & 7-amino-4- 20 -173.81 -213.23 methyl[1,8]naphthyridin- 2-ol Table 3: The interacting amino acids in the collagen receptor when the analog 1-bromo-2,5-pyrrolidinedione of collagenase drug is docked.
Mosquito neurons also failed to respond to C[O.sub.2] in the presence of 1-hexanol and 1-butanal, a close relative of 2,3-butanedione.
2,3-Butanedione monoxime increase sensitivity to Nikkomycin Z in the budding yeast S.cerevisiae.
Akubuiro (1993) worked on MEK degradation mechanism on activated carbon and proposed a hydroperoxide to be a first intermediate product from ambient oxygen, prior to the appearance of 2,3-butanedione, before acetaldehyde and acetic acid.
Conversely, treatment of cells on firm substrates with myosin II/myosin light chain kinase inhibitors 2,3-butanedione monoxime or KT5926 caused large focal adhesions to disappear, as on flexible substrates.
Diacetyl (2,3-butanedione) is a volatile product of citrate metabolism.
An internal standard compound, 2-methyl-3-methanone, n-alkane ([C.sub.8]-[C.sub.20]) and authentic compounds including acetaldehyde, trans-2-decenal, 2-methylpropanal, 2-methylbutanal, 3-methylbutanal, pentanal, hexanal, heptanal, (E), 2-heptenal, 2-methylthiazole, benzaldehyde, octanal, benzeneacetaldehyde, nonanal, decanal, (E,E), 2,4-decadienal, ethanol, 1-propanol, 2-furanmethanol, 1-hexanol, 1-octen-3-ol, fufural, tetradecanal, 1-octanol, acetone, 2-propanone, 2,3-butanedione, 2-butanone, 2-heptanone, 3-octanone, dimethyldisulfide, pyrazine, methylpyrazine, 2,3-dimethylpyrazine etc.

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