Rapid and Label Free Detection of Aflatoxin B in Alcoholic Beverages with a Microfluid Fiber Device

A rapid and label free aflatoxin () microfluid sensor was proposed and tested. The device was fabricated with hollow-core photonics crystal fiber infiltrated with the solution. The autofluorescence emitting from the molecules was detected. The sensor length was optimized. The concentration was tested with a 4 cm long sensor. The best limit of detection was achieved as low as 1.34 ng/ml, which meets the test requirement of the national standards for in food. The effectiveness of this sensor being applied in beer solution was also verified to be a little more sensitive than in aqueous solution. Compared with traditional detection methods, the proposed single-ended device perfectly satisfies the demand of process control in alcoholic beverages manufacture.