Health  Vol.2 No.4 , April 2010
Influence of production processes in quality of fermented milk "Laban" in Lebanon
Abstract: Yoghurt (Laban) is one of the most consumed food products in Lebanon. Thus its quality has given a concern. In this study, the sensory, chemical and rheological properties of commercial and traditional samples were investigated in order to characterize this fermented milk. Hence, Laban samples were collected from 14 areas in Lebanon; especially from mountainous regions and from the capital Beirut. Forty-two samples were provided by processing industry whether at small, medium, or large scale. A statistical analysis was carried out, and thus sensory and physicochemical properties were subjected to two approaches of variance analysis. Pearson correlation coefficients between attributes were also calculated. Both, the analyses of variance and correlations were conducted using SPSS 3. The physicochemical analysis and the microbiological analysis exhibit a significant effect of the date, and the manufacturing process. Also, the instrumental data showed no significant correlation between physicochemical and microbiological parameters, which indicates that they are completely independent. Moreover, the general appreciation of descriptive sensory analysis of products display that this appreciation is not dependant on the production process. It is also noticed that some sensory characteristics can be dread by instrumental measures. This research endorses the essential role of quality control for the manufacturing of yoghurt in Lebanon.
Cite this paper: nullMayssoun, Z. and Nadine, N. (2010) Influence of production processes in quality of fermented milk "Laban" in Lebanon. Health, 2, 381-389. doi: 10.4236/health.2010.24057.

[1]   Tamime, A.Y. and Robinson, R.K. (1999) Yoghurt: Science and Technology. 2nd edition London, Woodhead Publishing Ltd., 619.

[2]   Lemoine, R. (2002) La filière laitière Libanaise: Un potential d’investissements dans l’élevage et l’industrie, Revue laitière Française, 619, 12-15.

[3]   Varnam, A.H. and Sutherland, J.P.(1994) Milk and milk products, Technology, Chemistry, and Microbiology, Chapman and Hall, UK, 78-83, 340-360.

[4]   Wouters, J.T.M., Ayad, E.H.E., Hugenholtz, J. and Smit, G. (2002) Microbes from raw milk for fermented dairy products. International Dairy Journal, 12, 91-109.

[5]   Cho, Y.H., Lucey, J.A. and Singh, H. (1999) Rheological properties of acid milk gels as affected by the nature of the fat globule surface material and heat treatment of milk. International Dairy Journal, 9, 537-545.

[6]   Martin, N.C., Skokanova, J., Latrille, E., Beal, C. and Corrieu, G. (1999) Influence of fermentation and storage conditions on the sensory properties of plain low fat stirred yoghurts. Journal of Sensory Studies, 14, 139-160.

[7]   Skriver, A., Holstborg, J. and Qvist, K.B. (1999) Relation between sensory texture analysis and rheological properties of stirred yogurt. Journal Dairy Research, 66, 609-618.

[8]   Winkelmann, F. (1987) Yogurt: Legal aspects, In Milk, the Vital Force, Organizing Committee of the XXII International Dairy Congress, Ed. Kluwer Academic Publishing Group, Netherlands, 691-699.

[9]   Mihyar, G.F., Yamani, M.I. and Al-Sa’ed, A.K. (1997) Resistance of yeast flora of labneh to potassium sorbate and sodium benzoate. Journal Dairy Sciences, 80, 2304-2309.

[10]   Libnor (1999) Norme Libanaise pour le lait cru. Beyrouth, Ministère de l’Economie, Standard No. 33.

[11]   Serhan, H. (1999) Vers une politique de qualité des entreprises laitières libanaises: Intérêts ET orientations stratégiques, M.S. thèses, IHEAM/IAMM, Montpellier, France, 463.

[12]   Afnor (1995) Norme française, microbiologie alimentaire, recherche des salmonella shigella, méthode de routine, Standard no.V 08-052.

[13]   Marshall, R.T. (1992) Standard methods for the examination of dairy products. American Public Health Association, Washington D.C.

[14]   AOAC (1990) Association of official analytical chemists. Official Methods of Analysis of AOAC International, 15th Edition.

[15]   Afnor (1985) Norme française, microbiologie alimentaire, dénombrement des coliformes totaux à 37°C, Méthode de routine, Standard no. V 08-015.

[16]   Afnor (1988) Norme française, microbiologie alimentaire, dénombrement des escherichia coli β-glucoronidase positive par comptage des colonies à 44°C, Méthode de routine, Standard no. V 08-053.

[17]   Afnor (1993) Norme française, contrôle de la qualité des produits alimentaires, lait et produits alimentaires: analyses physico-chimiques, 4eme édition, Paris, recueil des Normes Françaises, 195-215.

[18]   Afnor (1994) Norme française, microbiologie alimentaire, dénombrement des staphylococcus aureus à 37°C, Méthode de routine, Standard no.V 08-057.

[19]   Afnor (1999) Norme française, microbiologie alimentaire, recherche des moisissures et levures, Méthode de routine, Standard no.V 08-022.

[20]   Toufeili, I., Al-Kadamany, E., Khattar, M., Abou Jawdeh, Y., Harakeh, S. and Haddad, T. (2002) Determination of shelf life of concentrated yoghurt (Labneh) produced by in bag straining of set yoghurt using Hazard Analysis. Journal Dairy Sciences, 85, 1023-1030.

[21]   Guizani, N., Kasapis, S. and Al-Ruzeiki, M. (2001) Microbial, chemical and rheological properties of (cultured milk). International Journal Food Sciences Technology, 36, 199-205.

[22]   Libnor (2004) Norme Libanaise pour les produits laitiers, Beyrouth, Ministère de l’Economie, 3ème édition, Standard No. 47.

[23]   Libnor (2006) Norme Libanaise pour les produits laitiers, Beyrouth, Ministère de l’Economie, Standard No. 510.

[24]   Seydi, M. and Ndiaye, M. (1993) Acidity and microbial flora contaminating Senegalese reconstituted curdled milk produced on small scale. Bulletin No. 38, Société Médicale d'Afrique Noire de Langue Française, 61-67.

[25]   Ashenafi, M. (1996) Effect of Container Smoking and Incubation Temperature on the Microbiological and some Biochemical Qualities of Fermenting Ergo, Traditional Ethiopian Sour Milk, International Dairy Journal, 6, 95-104.

[26]   Godefay, B. and Molla, B. (2000) Bacteriological quality of raw cow's milk from four dairy farms and a milk collection centre in and around Addis Ababa, Berliner Und Munchener Tierarztliche Wochenschrift, 113L, 276-278.

[27]   Beukes, E.M., Bester, B.H. and Mostert, J.F. (2001) The microbiology of South African traditional fermented milks. International Journal of Food Microbiology, 63, 189-197.

[28]   Feghaly, G.(2005) Influence des procédés de fabrication sur la qualité de yaourt, DEA thèses, Agence Universitaire de la Francophonie, Bureau du Moyen-Orient, Beyrouth.

[29]   Marshall, V.M. and Rawson, H.L. (1999) Effects of exopolysaccharide-producing strains of thermophilic lactic acid bacteria on the texture of stirred yoghurt. International Journal of Food Sciences Technology, 34, 137-143.