Anthocyanin‐loaded bacterial cellulose nanofiber as a green sensor for monitoring the selective naked eye and visual detection of Al(III) Ions

• Published in: Analytical science advances Vol. 4; no. 11-12; pp. 324 - 334
• Main Authors: Arghavani, Sima, Mohseni‐Shahri, Fatemeh S., Moeinpour, Farid
• Format: Journal Article
• Language: English
• Published: Germany John Wiley & Sons, Inc 01.12.2023; John Wiley and Sons Inc
• Subjects: aluminium ion; anthocyanin; bacterial cellulose nanofiber; Biocompatibility; Cellulose; Food; green; Hydrogen bonds; metallochromic sensor; Nanocrystals; Onions; Scanning electron microscopy; Scientific imaging; Sensors; Tea; Iran; bacterial cellulose nanofiber; green; aluminium ion; anthocyanin; metallochromic sensor
• ISSN: 2628-5452; 2628-5452
• DOI: 10.1002/ansa.202300014

The present study developed a green metallochromic sensor that detects aluminium (Al(III)) ions in solution and solid state using anthocyanin extract from purple onion peels embedded in bacterial cellulose nanofibers (BCNFs). The CIE Lab colour parameters demonstrated that Al(III) binding causes a sensible change in colour. A variety of metal ions including K+, Mn2+, Cu2+, Hg2+, Cr2+, Pb2+ and Ni2+ were used to challenge the sensor to determine its selectivity. The findings demonstrated that the suggested sensor showed excellent selectivity toward Al(III) ion. Al(III) is quantitatively detected by the sensing method with detection limits in the range between 30–200 and 20–300 ppm in solution and solid state, respectively, and through observation with naked eye. The fabricated green metallochromic sensor is promising to be a simple, cheap, mobile and easily operable for real‐time and on‐site detection of Al(III) ions in food matrices.