LOW COST 3D PRINTED SPECTROPHOTOMETER FOR SUNSET YELLOW AND TARTRAZINE SIMULTANEOUS DETERMINATION

EZEQUIEL VIDAL; DAMIÁN URIARTE; SERGIO PASINI; LORENA VIDAL; MARIANO GARRIDO; CLAUDIA E. DOMINI

Alicante

Simposio; 23rd International Symposium on Advances in Extraction Technologies; 2021

Universidad de Alicante

The food industry is an important economic source in most countries of the world. Theappearance of food is crucial in making it an attractive product. Thus, manufacturers often usedifferent dyes, some of which are regulated in their use (with maximum allowed levels), whileothers are prohibited due to their hazardous consequences. Tartrazine (E-102) and sunsetyellow (E-110) have been two of the most widely used dyes in recent years. Several of theiradverse effects on human health are known [1]. The spectrometric behaviour of tartrazine andsunset yellow does not allow their direct quantification when both dyes are in the sample.Portable devices are valuable instruments for industrial quality control, and also for regulatorychecks by competent authorities. Smartphone-based devices have been gaining moreimportance recently. The use of 3D printing technology has facilitated the manufacture ofanalytical interfaces adapted to perform image-based determinations with Smartphones. In thiswork, the study of real samples of powdered juices and gelatins was carried out with a 3Dprinted spectrophotometer (Figure 1). In all samples, tartrazine and sunset yellow weresuccessfully quantified using imaging with the aid of Multivariate curve resolution-alternatingleast squares (MCR-ALS) as a chemometric tool. The recoveries ranged between 91 and 108.6%.