**Characteristics of Instrumental Methods to Describe and Assess the Recrystallization Process in Ice Cream Systems**

**Anna Kami ´nska-Dwórznicka 1,\*, Ewa Gondek 1, Sylwia Raba 2, Ewa Jakubczyk <sup>1</sup> and Katarzyna Samborska <sup>1</sup>**


Received: 14 February 2019; Accepted: 1 April 2019; Published: 4 April 2019

**Abstract:** Methods of testing and describing the recrystallization process in ice cream systems were characterized. The scope of this study included a description of the recrystallization process and a description and comparison of the following methods: microscopy and image analysis, focused beam reflectance measurement (FBRM), oscillation thermo-rheometry (OTR), nuclear magnetic resonance (NMR), splat-cooling assay, and X-ray microtomography (micro-CT). All the methods presented were suitable for characterization of the recrystallization process, although they provide different types of information, and they should be individually matched to the characteristics of the tested product.

**Keywords:** recrystallization; food hydrocolloids; methods for crystal structure evaluation
