geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Direct Chromatographie determination of acetic, propionic and butyric acids in cheese


, : Direct Chromatographie determination of acetic, propionic and butyric acids in cheese. J. Dairy Sci, 36: 8, 808-16

The column is prepared in 3 sections (i) buffered silicic acid and above this (ii) a short column of acidified (H2SO4) silicic acid surmounted by (iii) a mixture of silicic acid and cheese adjusted to pH 1.7-2.0 with H2SO4. The acids are thus extracted directly from the cheese without preliminary distillation. The acids are eluted with butanol-chloroform solvents in which the concentration of butanol is raised by stages from 1 to 20 per cent. Examples are given of the separation of these 3 acids in Romano and Provolone cheese of various ages and in Swiss, Cheddar and Blue cheese. The method gives a high recovery (>90 per cent) of acids added to cheese as sodium salts.

US$19.90

DOI: 10.3168/jds.S0022-0302(53)91566-5


Other references

Wagner, S.; Zorita, E., 2008: Simulating the climate of the Holocene with a coupled atmosphere-ocean GCM; a new basis for transient data-model comparisons. Eos, Transactions, American Geophysical Union 89.53, Suppl.

Spaans A.L.; Swenmen C., 1968: The birds of vlieland netherlands systematic list. Wetenschappelijke Mededelingen K N N V (Koninklijke Nederlandse Natuurhistorische Vereniging) (75): 1-104

Whitfield, M.; Machaczek, K.; Green, G., 2014: Developing a model to estimate the potential impact of municipal investment on city health. This article summarizes a process which exemplifies the potential impact of municipal investment on the burden of cardiovascular disease (CVD) in city populations. We report on Developing an evidence-based approach to city public health planning a...

Jackson, G.J., 1973: Neoaplectana glaseri: essential amino acids. Neoaplectana glaseri of a strain which has been cultured on kidney slices continuously since 1944 were washed 3 times and stored in double distilled water for several months before being grown on chemically defined media. No reproduction in the ab...

Hatch, J.J.; Brown, K.M.; Hogan, G.G.; Morris, R.D., 2000: Great cormorant. Birds of North America, 553: 1-32

Malkus, L., 1964: Attempt At Classification Of The Clinical Types Of Otogenic Brain Abscesses. Revue de Laryngologie - Otologie - Rhinologie 85: 961-972

Youngs, H., L.; Gretz, M., R.; West, J., A.; Sommerfeld, M., R., 1998: The cell wall chemistry of Bangia atropurpurea (Bangiales, Rhodophyta) and Bostrychia moritziana (Ceramiales, Rhodophyta) from marine and freshwater environments. The cell wall polysaccharides of two species of red algae, which are adapted to both freshwater and marine environments, were analysed to determine the effect of these widely different environments on their commercially important agarocolloids and...

Schicke, R.K., 1978: A methodology in surveying geriatric patients, facilities and services. Social Science & Medicine 12(4a): 229-234

Bosi, I.; Ancora, G.; Venturi, V.; Mantovani, V.; Miniero, R.; Verucchi, G.; Lanari, M.; Sandri, F.; Salvioli, G.P., 1999: HLA-DR13 is preferentially associated with a diminution in maternally transmitted hepatitis virus infection. Pediatric Research 45(4 PART 2): 267A, April

Koshik, T.F.; Grishilo, A.F., 1965: Effect of tetracycline on the glycogen-producing function of the liver and intestinal microflora in white mice. Antibiotiki 10(7): 636-640