Separation of meat juice from various animals using a lectin panel and ellipsometry

• In this work simple microcontact printed gold-wafers were used to make a lectin panel for investigation and separation of different meat juices from fresh meat of cattle, chicken, pig, cod, turkey and lamb. Seven different lectins were thus attached to gold surfaces using the streptavidin-biotin method. Lectins recognize and bind specifically to carbohydrate structures present on different proteins. The bio-recognition was evaluated with null ellipsometry and the data obtained was related to an internal standard of lactoferrin. The data was evaluated with multivariate data analysis techniques to identify possible separation or grouping of data. Scanning ellipsometry was used for visualization of the binding pattern of the lectins and the meat juice proteins. The 2-dimensional images obtained could be used to visualize the protein distribution, furthermore, to exclude anomalies. The results showed that the different meat juices could be separated from each other. Using a simple model based on an artificial neuronal net, it was also possible to classify meat juices from the mammals investigated.

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