The EU Chocolate Directive 2000/36/EC allows the use of the vegetable fats CBEs and CBIs up to a maximum of 5% in chocolate. Manufacturers and users must know how this has an influence on the properties of chocolate. The objective of the work reported here was to find out by systematic investigations, which effect CBEs/CBIs have on the quality parameters, hardness and heat resistance of chocolate. The influence on the hardness was tested also under extreme practical storage conditions. The quality monitoring was performed up to one year. For the determination of the heat resistance the penetrometric method was used in the temperature range 25–32 °C measuring the maximum loading force, occurring during the penetration of a cylindrical probe of 2 mm diameter with 4 mm penetration. The correlation between the average maximum loading force, relevant to the hardness of chocolate, and the temperature can be described by a linear regression at 95% confidence level. Statistical analyses (correlation analysis, residual analysis, Durban-Watson statistic) showed that it is possible to define the heat resistance of solid chocolate in the temperature range of 25–32 °C by the slope and the ordinate intercept of the regression line of the loading force vs. temperature for given parameters (composition, storage, experimental layout, etc.). For the determination of the hardness of the chocolate also the penetrometric method was used to measure the maximum loading force occurring during the penetration of a needle probe with 2 mm deformation. The hardness of the chocolate samples determined with the penetrometric method and statistical analysis (One-Way, Two-Way Analysis of Variance, Dunnett’s comparisons) is significantly dependent on the composition and storage conditions, where the storage conditions are the dominant factor. The results show that the differences in hardness between the chocolate samples with CBE/CBI and those without CBE/CBI, both stored in the cellar (cold storage), are marginal. After one week of storage the sample with CBI has nearly the same hardness as the standard sample with CB, whereas the sample with CBE was slightly softer. The differences are slightly clearer for the northern storage room (moderate temperature) and for the southern room (warm temperature). After a definite storage time the hardness of all samples increased and was in the case of the southern storage room (warm temperature) up to twice as high. The quality monitoring up to one year showed that the reason for this increase in hardness is not a special storage time but the increasing temperatures with the beginning of the warm season and the cyclic change of the temperature during day and night. So an explanation for this unexpected increase in hardness can be a thermocyclic hardening of the chocolate samples under these storage conditions.
Biczo, V., Scherer, R., Schaefer, R., Fekete, A. (2005) Kakaobutteräquivalente (CBEs) in der praktischen Anwendung. Getreidetechnologie (Cereal Technology) 59 (2) 114–118.
Fekete A., 'Kakaobutteräquivalente (CBEs) in der praktischen Anwendung' (2005) 59Getreidetechnologie (Cereal Technology): 114-118.
Fekete A.Kakaobutteräquivalente (CBEs) in der praktischen AnwendungGetreidetechnologie (Cereal Technology)200559114118)| false
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Markov E.Texturuntersuchung an Schokolade (Teil I: Meßmethoden, Teil II: Sensorisch — instrumenteller Vergleich, Teil III: Vorkristallisation im Labormaßstab zur Probenherstellung, Teil IV: Enfluß von Stoff- und Prozeßparametern auf die Textur von Schokolade)Lebensmittelindustrie198835129131)| false
Beke, János (Szent István University, Faculty of Mechanical Engineerin, Gödöllő – Hungary)
Fenyvesi, László (Szent István University, Faculty of Mechanical Engineering, Gödöllő – Hungary)
Szendrő, Péter (Szent István University, Faculty of Mechanical Engineering, Gödöllő – Hungary)
Felföldi, József (Szent István University, Faculty of Food Science, Budapest – Hungary)
De Baerdemaeker, Josse (KU Leuven, Faculty of Bioscience Engineering, Leuven - Belgium)
Funk, David B. (United States Department of Agriculture | USDA • Grain Inspection, Packers and Stockyards Administration (GIPSA), Kansas City – USA
Geyer, Martin (Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Department of Horticultural Engineering, Potsdam - Germany)
Janik, József (Szent István University, Faculty of Mechanical Engineering, Gödöllő – Hungary)
Kutzbach, Heinz D. (Institut für Agrartechnik, Fg. Grundlagen der Agrartechnik, Universität Hohenheim – Germany)
Mizrach, Amos (Institute of Agricultural Engineering. ARO, the Volcani Center, Bet Dagan – Israel)
Neményi, Miklós (Széchenyi University, Department of Biosystems and Food Engineering, Győr – Hungary)
Schulze-Lammers, Peter (University of Bonn, Institute of Agricultural Engineering (ILT), Bonn – Germany)
Sitkei, György (University of Sopron, Institute of Wood Engineering, Sopron – Hungary)
Sun, Da-Wen (University College Dublin, School of Biosystems and Food Engineering, Agriculture and Food Science, Dublin – Ireland)
Tóth, László (Szent István University, Faculty of Mechanical Engineering, Gödöllő – Hungary)
Prof. Felföldi, József Institute: MATE - Hungarian University of Agriculture and Life Sciences, Institute of Food Science and Technology, Department of Measurements and Process Control Address: 1118 Budapest Somlói út 14-16 E-mail: email@example.com