Restricted accessResearch articleFirst published online 1996-6
Characterization of Canarian cheeses applying discriminant analysis to physico-chemical variables/Caracterización de quesos canarios mediante la aplicación del análisis discriminante de variables fisicoquímicas
Discriminant analysis was applied to 84 artisan and commercial cheese samples from the seven Canary Islands (Spain), determined by different physico-chemical variables (SNT, NPN, NNH3, aw, pH, moisture, NaCl, fat). All of them were selected to compute discriminant functions according to the method of Fatti and Hawkins. The generalized square distances among classes and the posterior probability for each cheese to belong to a class were calculated. According to discrimi nant analysis three of the seven classes considered had 100% well-classified cheeses, three had 91.67% and one had 83.33%.
Aishima T., Nakai S. (1987) Pattern recognition of GC profiles for classification of cheese variety. J Food Sci52: 939-942.
2.
Alonso L., Juárez M., Ramos M., Martin Alvarez PJ (1987a) Overall composition, nitrogen fractions and fat characteristics of Cabrales cheese during ripening. Z Lebensm Unters Forsch185: 481-486.
3.
Alonso L., Ramos M., Martin Alvarez PJ, Juárez M. (1987b) Application of stepwise discriminant analysis to parameters for characterizing frozen Cabrales cheeses. J Dairy Sci70: 905-908.
4.
Aoac (1980) Official Methods of Analysis, 30th edn. Washington : Association of Official Analytical Chemists.
5.
Ballentine R. (1957) Determination of total nitrogen and ammonia. Meth Enzymol3: 984-995.
6.
Bevilacqua AE, Califano AN (1992) Changes in organic acids during ripening of Port Salut Argentino cheese. Food Chem43: 345-349.
7.
British Standards Institution (1963) Methods for the Chemical Analysis of Cheese. London: BSI.
8.
Castelo M. (1995) Componentes fisicoquimicos, microbiológicos y evaluación sensorial de quesos canarios: Estudio individual y comparado. Tesis Doctoral, Facultad de Veterinaria, Universidad de Las Palmas de Gran Canaria, Las Palmas.
9.
Cepeda A., Paseiro P., López de Alda ML, Rodriguez Otero JL (1990) Intento de tipificación de distintos tipos de quesos gallegos comerciales mediante el análisis discriminante. Alimentaria213: 25-27.
10.
Fatti LP, Hawkins DM (1986) Variable selection in heteroscedastic discriminant analysis. J Am Stat Assoc81: 494-500.
11.
Godwin DR, Washam CJ, Powers JJ (1977) Selection of blue cheese quality descriptors by sensory evaluation. J Dairy Sci 60 (sup.1): 42.
12.
Lenoir J. (1962) The degradation of proteins during the ripening of Camembert. C R Hebd Séances Acad Agric48: 160-169.
13.
Lucisano M., Casiraghi E., Pompei C., Dellea C. (1991) Characterization of Provolone cheese. II. Proposal for a quality control procedure. ItalJ Food Sci3: 113-125.
14.
Martin Hernández C., Amigo L., Martin Alvarez PJ, Juárez M. (1992) Differentiation of milks and cheeses according to species based on the mineral content. Z Lebensm Unters Forsch194: 541-544.
15.
Millán R., Saavedra P., Sanjuán E., Castelo M. (1995) Application of the discriminant analysis to physico-chemical variables of Spanish cheeses. Food Chem55(2):189-191.
16.
Netherlands Standard NEN 3059 (1969) Butyrometric determination of the fat content of cheese (Gerber-Van Gulik method). Neth Milk Dairy23: 214-220.
17.
Santa Maria G., Ramos M., Ordóñez JA (1986) Application of linear discriminant analysis to different proteolysis parameters for assesing the ripening of Manchego cheese . Food Chem19: 225-234.
18.
Sas/Stat (1989) User's Guide, Release 6.06 edition. Cary, NC: SAS Institute Inc.
19.
Smith AM, Nakai S. (1990) Classification of cheese varieties by multivariate analysis of HPLC profiles. Can Inst Food Sci Technol J23: 53-58.
