Optimasi Kitooligosakarida Cangkang Rajungan (Portunus pelagicus) Menggunakan Enzim Kitosanase dari Bacillus sp.
(Optimization of Chitooligosacharides of Cramb Shell (Portunus pelagicus) Using Chitosanase Enzyme from Bacillus sp.)
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Septi Lilik Yuliana
Program Studi Teknologi Pangan, Fakultas Teknik, Universitas Pembangunan Nasional “Veteran” Jawa Timur, Indonesia
Dedin Finatsiyatull Rosida
Program Studi Teknologi Pangan, Fakultas Teknik, Universitas Pembangunan Nasional “Veteran” Jawa Timur, Indonesia
Andre Yusuf Trisna Putra
Program Studi Teknologi Pangan, Fakultas Teknik, Universitas Pembangunan Nasional “Veteran” Jawa Timur, Indonesia
DOI: https://doi.org/10.19184/j-agt.v16i01.28259
ABSTRACT
Chitooligosaccharides (COS) are glycoprotein complex compounds derived from chitosan linked by 1,4 glucosidic bonds with chain lengths of 20 or less. Crab shell is a crustacean waste that contains 20-30% chitin as the basic material for making chitooligosaccharides. Chitooligosaccharide hydrolysis can be carried out enzymatically. Enzymatic hydrolysis is specific and controlled. Enzymes that can be used to hydrolyze chitosan into chitooligosaccharides are chitosanase enzymes. Chitosanase enzyme is a glycosyl hydrolase enzyme that catalyzes the hydrolysis of -1,4 glycosidic bonds of chitosan to produce low molecular weight chitooligosaccharides. One of the bacteria that produces chitosanase enzymes, namely Bacillus sp. The purpose of this study was to optimize the production of chitooligosaccharides by treating the enzyme concentration, hydrolysis time, and hydrolysis temperature. This research was conducted using a completely randomized design (CRD) with the following factors: enzyme concentration (0.5%, 1%, 1.5%, 2%, 2.5%) and hydrolysis temperature (30oC, 40oC, 50oC, 60oC, 70oC, 80oC) and time of hydrolysis (1 hour, 2 hours, 3 hours, 4 hours, 5 hours, 6 hours, 7 hours, and 8 hours). This enzyme works optimally at pH 4.5. The results showed that this chitosanase enzyme had optimum activity at a concentration of 2% (w/w) chitosan, a temperature of 50oC, and a hydrolysis time of 5 hours. The chitooligosaccharide has a reducing sugar content of 8.49 ± 0.38 mg/mL, a viscosity of 19.08 ± 0.01 cPs, and a molecular weight of 4.51 kDa.
Keywords: chitooligosaccharides, chitosanase enzyme, crab shells, hydrolysis
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Published
25-06-2022
Issue
Vol. 16 No. 1 2022: Jurnal Agroteknologi
Pages
85-98
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Copyright (c) 2022 Jurnal Agroteknologi
How to Cite
Yuliana, S.L., Rosida, D.F., & Putra, A.Y.T. (2022). Optimasi kitooligosakarida cangkang rajungan (Portunus pelagicus) menggunakan enzim kitosanase dari Bacillus sp. Jurnal Agroteknologi, 16(1), 85-98. https://doi.org/10.19184/j-agt.v16i01.28259
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