The effect of drying temperature on chemical composition of chitosan powder from fishbone waste to hydroponic Deep Water Culture (DWC) application

Abstract

The purpose of this study is to increase the added value of fishery waste, especially cork fish bones that have not been optimally utilized. The benefits of chitosan powder from cork fish bones can be used as a nutrient solution containing calcium in the DWC hydroponic system. The results of this study of cork chitosan bone powder obtained 22.65% Calcium Levels, 2.33% Moisture Content, 0.69% Ash Levels, Protein Levels 92.61%, 140 μ Particle Size, and 93.72% white degrees with microscopic properties obtained density ρ = 0.1 Kg / m3, Porosity P = 61%, Strength of Pressure chitosan powder in water σ = 0.13 Pa, Tensile strength of plant roots σ = 100.63 N / m3 Plant strain of ϵ = 6.14, and Young's Modulus E = 16.39 N / m3. The hydrolysis process is carried out to obtain purer calcium chitosan powder with finer size fish so that it is easily absorbed by hydroponic plants.