Akuatikisle: Jurnal Akuakultur, Pesisir dan Pulau-Pulau Kecil
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Effect of chitosan from crab shells (Portunus pelagicus) on the chemical properties of liquid fertilizer
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Abstract
Swimming crab shell waste is a fishery byproduct that has the potential to pollute the environment if not utilized properly. One alternative utilization is to process it into chitosan, which is then formulated into liquid fertilizer. This study aimed to determine the effect of chitosan concentration based on swimming crab shells on the chemical properties of liquid fertilizer. The study was conducted from February to March 2025. Chitosan and liquid fertilizer production was conducted at the Fishery Products Biochemistry Laboratory, Pangkep State Agricultural Polytechnic. The method used was an experimental laboratory with a Completely Randomized Design (CRD), with three treatments and three replications, with chitosan concentrations of 2%, 4%, and 6%. Data were analyzed using One-Way ANOVA and the W-Tukey HSD test. If the assumption of homogeneity of variance was not met, Welch ANOVA with the Games-Howell test was used to determine differences in effects between treatments. The results showed that the treatment had a significant effect (P<0.05) on most of the chemical properties of liquid fertilizer. The chemical properties of pH were (2.90 3.00 3.23), C-organic were (1.08% 2.72% 4.21%), macronutrients N + P2O5 + K2O were (0.76% 0.64% 1.19%). In conclusion, increasing the concentration of chitosan improves the chemical properties of liquid fertilizer, so that crab shell chitosan has the potential as a material for liquid organic fertilizer formulation.
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Material and Methods
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Competing interest
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Conflict of interest
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
Ethical approval acknowledgements
No ethical approval required for this article. All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2008 (5)
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Data sharing not applicable to this article as no datasets were generated or analysed during the current study, and/or contains supplementary material, which is available to authorized users.
Bibliographic Information
Cite this article as:
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Submitted
16 June 2025 -
Revised
21 July 2025 -
Accepted
1 August 2025 -
Published
6 August 2025 -
Version of record
9 September 2025 -
Issue date
30 November 2025
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Academic subject
Teknologi Hasil Perikanan
Copyright
ZulKhairiyah, Dosen THP ITBM. Program Studi Teknologi Hasil Perikanan, Institut Teknologi dan Bisnis Maritim Balik Diwa, Jl. Perintis Kemerdekaan VIII No.8 Makassar, Sulawesi Selatan, Indonesia.
zul.stitek@gmail.com
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