Abstract
The small crab animal is important for the fisheries sector in Indonesia, but usually the small crab industry only takes meat and allows the crab shell to become a pile of waste. To reduce the potential for pollution caused by a small crab shell waste, the waste can be reused to obtain chitin. Small crab shell waste still contains quite a lot of chemical compounds, including protein, minerals (CACO), and chitin. The study conducted chitin extraction with a process preceded by deproteination and then demineralization. Chitin was characterized using Fourier Transform Infra Red (FTIR) and Scanning Electron Microscopy (SEM). The results showed that chitin was successfully extracted from the small crab shell through the deproteination and demineralization process with FTIR l, which results the characteristic spectrum of chitin compounds such as waves of 3433 cm 'for -OH, -NH groups. The absorption around the wave number 3433 cm occurs because of the overlap between the absorption -NH and -OH and the wave number 701 cm 'for the b-1,4-glycosidic group.
Highlights
The small crab animal is important for the fisheries sector in Indonesia, but usually the small crab industry only takes meat and allows the crab shell to become a pile of waste
The results showed that chitin was successfully extracted from the small crab shell through the deproteination and demineralization process with Fourier Transform Infra Red (FTIR) l, which results the characteristic spectrum of chitin compounds such as waves of 3433 cm 'for -OH, -NH groups
Tujuan penelitian ini yaitu melakukan ekstraksi kitin dari limbah cangkang rajungan melalui proses deproteinasi dan demineralisasi
Summary
The small crab animal is important for the fisheries sector in Indonesia, but usually the small crab industry only takes meat and allows the crab shell to become a pile of waste. Abstrak Hewan rajungan merupakan hal yang penting bagi sektor perikanan di Negara Indonesia, akan tetapi hewan rajungan lebih banyak digunakan bagian dagingnya saja sedangkan bagian lainnya (cangkang) akan menjadi limbah. Untuk mengurangi potensi pencemaran yang disebabkan oleh limbah cangkang rajungan, limbah tersebut dapat dimanfaatkan kembali untuk dapatkan kitin. Cangkang rajungan yang telah menjadi limbah tidak hanya terdapat kandungan kitin saja akan tetapi masih terdapat kandungan lain seperti protein dan mineral (CaCO3).
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