No Sticky Solution:
Schwerzenbach, Switzerland —. Analyzing the moisture content of sugar syrups can be done quickly, easily and accurately with the HR83 Halogen Moisture Analyzer from METTLER TOLEDO. This was confirmed by a study carried out by the University of Hohenheim which compared different methods.
Matching the Reference Value
The determination of moisture content by differential weighing before and after drying is suitable for nearly all foods.
The weight loss of heat sensitive sugars may be affected two fold during drying: Volatile decomposition products add to the weight loss, whereas the crust typically formed during heating of sugar may prevent complete moisture evaporation.
A study at the University of Hohenheim has shown that weight loss of sugar and fructose syrups as measured with METTLER TOLEDO???s HR83 Halogen Moisture Analyzer corresponds to the water content chemically determined by Karl Fischer titration.
Three drying programs (gentle, standard and rapid) on the HR83 were tested at different temperatures with varying sample sizes.
All three methods demonstrated a good correlation to the reference value determined with KF Titration.
Optimizing Drying Procedures
In tests with inverted sugar and fructose syrups, the German researchers found that the rapid drying program was not only the fastest but also the least sensitive against temperature and sample weight. The use of glass fiber pads optimized the drying procedures as they increased the surface area of the syrups and ensured complete and reproducible evaporation.
Accuracy and repeatability were satisfying for most instrument settings tested as estimated by the relative standard deviations of the measurements.
In general, the data shows that the HR83 heats the samples quickly and homogenously and provides accurate and reproducible results for sugar and fructose syrups.
About METTLER TOLEDO:
METTLER TOLEDO specializes in the area of precision instruments for professional use. METTLER TOLEDO laboratory instruments are used in research, scientific, drug discovery, and quality control labs, amongst many others in the pharmaceutical, chemical, food and cosmetics industries. METTLER TOLEDO comprehensive industrial solutions cover the various steps in a host of manufacturing processes at many of the same customers that laboratory serves. Solutions range from receiving raw materials through various manufacturing processes, in-line process control and end-of-line packaging control, to logistics and shipping. Increasingly, these solutions are fully integrated into the customer’s IT environment, helping automate their workflows. In food retail, our offering for fresh food management ranges from receiving and pre-packaging, to in-store solutions for self-service departments, deli counters, and checkout terminals.