**1. Introduction**

218 Food Industrial Processes – Methods and Equipment

Yamaski, M., Yasui, T. & Arima, K. (1964). Pectic enzymes in the clarification of apple

Yang, Y., Luo, H.I., Li, J.A., Wang, K., Cheng, H.P., Bai, Y.G., Yuan, T.Z., Fan, Y.L. & Yao,

*Agricultural and Biological Chemistry,* Vol.28, pp. 779-787

212

juice clarification. *Process Biochemistry,* Vol.46, pp. 272-277

juices. Part I. Study on the clarification reaction in a simplified model.

B. (2011). Cloning, expression and characterization of an acidic endopolygalacturonase from *Bispora* sp. MEY-1 and its potential application in

> The electrochemical biosensors are analytical devices designed by coupling biological recognition elements and electrochemical transducers. The transducer converts the analytical signal produced as a result of the biochemical and electrochemical interactions into measurable electrical one (Thévenot et al., 1999).

> The electrochemical biosensors are self-contained, simple to handle, and able to provide specific, sensitive, accurate and cost-effective *in situ* and *on line* measurements in real time, without or with a minimum sample preparation. Because of these advantages over the conventional analytical methods, they are well suited for the detection of a large spectrum of compounds, entering food and subjects of analytical control.

> The present work is intended to demonstrate the applicability of the electrochemical biosensors for arsenic determination in beverages.
