Year: 2024
Type: article
Abstract: This study investigates the effect of varying soaking times on the production of chitosan from shrimp shells. Asample of fresh shrimp shells was obtained from a market in Malacca, Malaysia, and pre-treated by washing,drying, and pulverizing into a homogeneous powder. The synthesis process involved three primary steps:demineralization, deproteinization, and deacetylation. Each step was executed under different conditions forfour samples (S1-S4) to examine the impact of soaking duration on chitosan yield and properties.Demineralization was achieved using 1 M HCl, while deproteinization involved treatment with 1 M NaOH, bothwith varying soaking times. Deacetylation was conducted with 12.5 M NaOH at different temperatures anddurations. The resultant chitosan was characterized using Fourier Transform Infrared (FTIR) spectroscopy, X-raydiffraction (XRD), and UV-Vis spectroscopy. The FTIR spectra confirmed the presence of characteristic chitosanfunctional groups, with higher degrees of deacetylation (DD%) corresponding to increased soaking times. XRDanalysis indicated an amorphous structure for all samples, with S4 displaying the lowest crystallinity at thehighest DD%. UV-Vis analysis confirmed that all samples were soluble in 1% acetic acid, suggesting good purity.The findings demonstrate that while soaking times affect the DD% and crystallinity of chitosan, all samplesremained soluble and suitable for further applications. This work demonstrates that while soaking times affectthe DD% and crystallinity of chitosan, all samples remained soluble and suitable for further applications. Thisstudy provides insights into optimizing chitosan production with variations in soaking time conditions.
Source: DergiPark (Istanbul University)
Authors: Siti Asma Che, AZIZ, Siti Amaniah Mohd, CHACHULI, Nur Hazahsha, SHAMSUDIN
Institution: Universiti Teknikal Malaysia Melaka
Language: English
Subfield: Biomaterials
Field: Materials Science
Domain: Physical Sciences
SDG: Zero hunger
Open Access status: green
OpenAlex ID: W4405707623