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https://doi.org/10.1016/j.carbpol.2010.12.052

has been cited by the following article:

• TITLE: A Glassy Carbon Electrode Modified with Cellulose Nanofibrils from Ammophila arenaria for the Sensitive Detection of L-Trytophan

  AUTHORS: Sondes Bourigua, Feriel Boussema, Zayneb Jebali, Houcine Barhoumi, Hatem Majdoub, Abderrazak Maaref, Nicole Jaffrezic-Renault

  KEYWORDS: Nanofibrillated Cellulose, Chitosan, Chemically Modified Glassy Carbon Electrode, Electrochemical Detection, L-Tryptophan

  JOURNAL NAME: Journal of Sensor Technology, Vol.14 No.3, September 24, 2024

  ABSTRACT: L-tryptophan is an essential amino acid for human health. Nanofibrillated cellulose (NFC) from marram grass (Ammophila arenaria) extracted from plants harvested in the center of Tunisia was used for the first time for the modification of a glassy carbon electrode (GCE), for the sensitive detection of L-tryptophan (Trp). After spectroscopic and morphological characterization of the extracted NFC, the GC electrode modification was monitored through cyclic voltammetry. The NFC-modified electrode exhibited good analytical performance in detecting Trp with a wide linear range between 7.5 × 10−4 mM and 10−2 mM, a detection limit of 0.2 µM, and a high sensitivity of 140.0 µA∙mM−1. Additionally, the NFC/GCE showed a good reproducibility, good selectivity versus other amino acids, uric acid, ascorbic acid, and good applicability to the detection of Trp in urine samples.