Optical fiber tip sensor for glucose-adulterated honey detection

Foreign substances such as glucose syrup, corn syrup, sugar syrup and inverted syrup are used as adulterants and added directly to pure honey at certain ratios after production to increase the honey sweetness to recover more honey from the bee hives [3]. Fiber optic sensors are being widely used as chemical sensor in measuring the concentration of ethanol [7-10], sucrose and sodium chloride solution [11], glucose [12-15], preservative in milk [16], adulterated edible oil [17] and determination of nitrate [18], cadmium [19], fluoride [20], copper [21], magnesium [22] and lead ions [23] based on their concentrations in water. Thereby, we determined that it is feasible to detect the adulterated honey samples with a fiber optic sensor. [...]in this work, optical fiber tip sensor is proposed as a new technique in detecting adulterated honey. The main interest is the application of fiber optic sensor as a chemical sensor where the reflected light intensity changes by changing the chemical composition of measured solution around the sensing region. 2.Research Method In this experiment, a standard single mode fiber of length 30 cm with core and cladding diameter of 9 pm and 128 pm respectively was used to fabricate the tip sensing probe.