Determination of Acidity of Coffee by Flow Injection Analysis with Electrochemical Detection

Journal of Agricultural and Food Chemistry

Volumn 45, Issue 6, 1997, Pages 2124-2127

  Fuse, Tetsuo ^a   Kusu, Fumiyo ^a   Takamura, Kiyoko ^a  

^a TOKYO UNIVERSITY OF PHARMACY AND LIFE SCIENCES   (Japan)

Author keywords

Acidity; Coffee; Electrochemical detection; Titratable acidity

Indexed keywords

EID: 0344658327     PISSN: 00218561     EISSN: None     Source Type: Journal    
DOI: 10.1021/jf960690j     Document Type: Article

References (13)

1. Badoud, R.; Pratz, G. Improved high-performance liquid Chromatographic analysis of some carboxylic acids in food and beverages as their p-nitrobenzyl esters. J. Chromatogr. 1986, 360, 119-136.
2. Clifford, M. N. The composition of green and roasted coffee beans. Process Biochem. 1975, 5, 13-16.
3. Engelhardt, U. H.; Maier, H. G. Determination of non-volatile acids in coffee: comparison of capillary isotachophoresis and capillary gas chromatography. Fresenius Z. Anal. Chem. 1985a, 320, 169-174.
4. Engelhardt, U. H.; Maier, H. G. Acids of coffee. XII. Contribution of individual acids to the sour taste. Z. Lebensm. Unters. Forsch. 1985b, 181, 206-209.
5. Fuse, T.; Kusu, F.; Takamura, K. Voltammetric determination of free fatty acid content in fats and oils. Bunseki Kagaku 1995, 44, 29-33.
6. Kusu, F.; Fuse, T.; Takamura, K. Voltammetric determination of acid values of fats and oils. J. AOAC Int. 1994, 77, 1686-1689.
7. Kusu, F.; Fuse, T.; Takamura, K. Determination of acid content in coffee beans and coffee. Colloq. Sci. Int. Cafe, [C.R.], 16th 1995, 1, 351-358.
8. Schwarzenbach, R. High-performance liquid chromatography of carboxylic acids. J. Chromatogr. 1982, 257, 339-358.
9. Suzuki, N. Japanese Standard Methods for the Examination of Foods; Japan Food Hygiene Association: Tokyo, 1978; Chapter 23.
10. Takamura, K.; Fuse, T.; Kusu, F. Determination of the free fatty acid content in fats and oils by flow injection analysis with electrochemical detection. Anal. Sci. 1995, 11, 979-982.
11. Takamura, K.; Hayakawa, Y. Effects of proton donors on the polarographic reduction of methyl-p-benzoquinone in aqueous and methyl cellosolve solution. J. Electroanal. Chem. 1971, 31, 225-232.
12. Wada, K; Sasaki, H.; Shimoda, M.; Osajima, Y. Studies on aroma of coffee. Part IX. Objective evaluation of various trade varieties of coffee by coupling of analytical data and multivariate analyses. Agric. Biol. Chem. 1987, 51, 1753-1760.
13. Weers, M.; Balzer, H.; Bradbury, A.; Vitzthum, O. G. Analysis of acids in coffee by capillary electrophoresis. Colloq. Int. Sci. Cafe, [C.R.], 16th 1995, 1, 218-223.