The Impact of Different Hydrocolloids on the Viscoelastic Properties and Microstructure of Processed Cheese Manufactured without Emulsifying Salts in Relation to Storage Time
Alena Kratochvílová,
Richardos Nikolaos Salek,
Martin Vašina,
Eva Lorencová,
Vendula Kůrová,
Zuzana Lazárková,
Jolana Dostálová,
Jana Šenkýřová
Affiliations
Alena Kratochvílová
Department of Food Technology, Faculty of Technology, Tomas Bata University in Zlin, T.G. Masaryka 5555, 760 01 Zlin, Czech Republic
Richardos Nikolaos Salek
Department of Food Technology, Faculty of Technology, Tomas Bata University in Zlin, T.G. Masaryka 5555, 760 01 Zlin, Czech Republic
Martin Vašina
Department of Hydromechanics and Hydraulic Equipment, Faculty of Mechanical Engineering, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, 708 33 Ostrava, Czech Republic
Eva Lorencová
Department of Food Technology, Faculty of Technology, Tomas Bata University in Zlin, T.G. Masaryka 5555, 760 01 Zlin, Czech Republic
Vendula Kůrová
Department of Food Technology, Faculty of Technology, Tomas Bata University in Zlin, T.G. Masaryka 5555, 760 01 Zlin, Czech Republic
Zuzana Lazárková
Department of Food Technology, Faculty of Technology, Tomas Bata University in Zlin, T.G. Masaryka 5555, 760 01 Zlin, Czech Republic
Jolana Dostálová
Department of Food Technology, Faculty of Technology, Tomas Bata University in Zlin, T.G. Masaryka 5555, 760 01 Zlin, Czech Republic
Jana Šenkýřová
Department of Food Technology, Faculty of Technology, Tomas Bata University in Zlin, T.G. Masaryka 5555, 760 01 Zlin, Czech Republic
The current study was conducted to evaluate the effect of the addition of selected hydrocolloids [agar (AG), κ-carrageenan (KC), or gelatin (PG); as a total replacement for emulsifying salts] on the viscoelastic properties and microstructure of processed cheese (PC) samples during a storage period of 60 days (at 6 ± 2 °C). In general, PC viscoelastic properties and microstructure were affected by the addition of hydrocolloids and the length of storage time. The evaluated PC reported a more elastic behavior (G′ > G″) over the viscous one. The highest values of viscoelastic moduli (G′; G″; G*) were recorded for PC samples manufactured with KC addition, followed by those prepared with AG and PG. The control sample presented values of viscoelastic moduli similar to those of the PG sample. All PC samples tested had fat globule size values lower than 1 μm. Moreover, PC with AG and KG addition presented similar microstructures and sizes of fat globules.
