منابع مشابه
2,3-Diaminopyridinium sorbate–sorbic acid (1/1)
In the title mol-ecular salt-adduct, C(5)H(8)N(3) (+)·C(6)H(7)O(2) (-)·C(6)H(8)O(2), the 2,3-diamino-pyridinium cation is essentially planar, with a maximum deviation of 0.013 (2) Å, and is protanated at its pyridine N atom. The sorbate anion and sorbic acid mol-ecules exist in extended conformations. In the crystal, the protonated N atom and one of the two amino-group H atoms are hydrogen bond...
متن کاملSorbic acid as a selective agent in cucumber fermentations. II. Effect of sorbic acid on the yeast and lactic acid fermentations in brined cucumbers.
Previous studies (Costilow et al., 1955) demonstrated that the yeasts found to be most prevalent in cucumber fermentations were completely inhibited by 0.01 per cent sorbic acid in an 8 per cent salt (NaCl) medium at pH 4.6. As the pH was increased and/or the salt concentration decreased, more sorbic acid was required for complete inhibition of some of the yeasts tested. Cultures of Pediococcus...
متن کاملDistinct effects of sorbic acid and acetic acid on the electrophysiology and metabolism of Bacillus subtilis.
Sorbic acid and acetic acid are among the weak organic acid preservatives most commonly used to improve the microbiological stability of foods. They have similar pKa values, but sorbic acid is a far more potent preservative. Weak organic acids are most effective at low pH. Under these circumstances, they are assumed to diffuse across the membrane as neutral undissociated acids. We show here tha...
متن کاملSorbic Acid and Its Degradation Products: Electrochemical Characterization
Sorbic Acid and Its Degradation Products: Electrochemical Characterization Ilanna C. Lopes a b , Paulina V. F. Santos a , Victor C. Diculescu a , Mário César U. de Araújo b & Ana Maria Oliveira-Brett a a Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade de Coimbra, Coimbra, Portugal b Departamento de Química, Centro de Ciências Exatas e da Natureza, Universidade Federal ...
متن کامل2-Amino-4,6-dimethylpyrimidine–sorbic acid (1/1)
In the crystal of the title compound, C6H9N3·C6H8O2, the 2-amino-4,6-di-methyl-pyrimidine and sorbic acid mol-ecules are linked through N-H⋯O and O-H⋯N hydrogen bonds, which generate a cyclic bimolecular heterosynthon with an R 2 (2)(8) graph-set motif. Further, two inversion-related pyrimidine mol-ecules are base-paired via a pair of N-H⋯N hydrogen bonds, forming a cyclic bimolecular homosynth...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nippon Eiseigaku Zasshi (Japanese Journal of Hygiene)
سال: 1957
ISSN: 0021-5082,1882-6482
DOI: 10.1265/jjh.12.36