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      Pengaruh Ultrafiltrasi terhadap Aktivitas Antioksidan Hidrolisat Protein Ikan Mas (Cyprinus carpio)

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      Date
      2025
      Author
      Jannah, Aqira Tul
      Nugraha, Roni
      Abdullah, Asadatun
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      Abstract
      Ikan mas (Cyprinus carpio) memiliki kandungan protein tinggi yang dapat dimanfaatkan sebagai hidrolisat protein penghasil peptida bioaktif dengan aktivitas antioksidan. Aktivitas antioksidan umumnya terdapat pada peptida pendek, sehingga perlu dilakukan pemisahan melalui ultrafiltrasi. Ultrafiltrasi memisahkan berdasarkan berat molekul dengan prinsip menahan molekul besar di permukaan membran dan melewatkan molekul kecil melalui pori-pori. Penelitian ini bertujuan menentukan pengaruh ultrafiltrasi terhadap aktivitas antioksidan hidrolisat protein ikan mas. Hidrolisis protein dilakukan menggunakan enzim alkalase dengan waktu hidrolisis 2, 3, 4, dan 5 jam. Hidrolisat selanjutnya difilter dengan membran ultrafiltrasi MWCO 3 kDa. Aktivitas antioksidan ditentukan menggunakan uji DPPH dan ABTS. Derajat hidrolisis tertinggi diperoleh sebesar 50,85% pada waktu hidrolisis 2 jam. Berat molekul berkisar 2,5-44 kDa. Nilai aktivitas antioksidan tertinggi diperoleh setelah ultrafiltrasi, pada fraksi <3 kDa dengan nilai IC50 sebesar 3,04 ppm (DPPH) dan 2,99 ppm (ABTS) yang tergolong kategori antioksidan sangat kuat. Hasil ini menunjukkan bahwa ultrafiltrasi efektif memisahkan peptida pendek dengan aktivitas antioksidan tinggi, meningkatkan akurasi evaluasi bioaktivitas, serta membuka peluang aplikasi peptida bioaktif.
       
      Common carp (Cyprinus carpio) has high protein content that can be utilized as protein hydrolysate to produce bioactive peptides with antioxidant activity. Antioxidant activity is generally found in short peptides, necessitating separation through ultrafiltration. Ultrafiltration is a molecular weight-based separation technique that retains large molecules on the membrane surface while allowing smaller molecules to pass through the pores. This study aimed to determine the effect of ultrafiltration on the antioxidant activity of common carp protein hydrolysate. Hydrolysis was conducted using enzyme alcalase for durations of 2, 3, 4, and 5 hours. The resulting hydrolysates were filtered using an ultrafiltration membrane with a 3 kDa MWCO. Antioxidant activity was assessed using DPPH and ABTS assays. The highest degree of hydrolysis was 50.85% at 2 hours of hydrolysis. Molecular weights ranged from 2.5 to 44 kDa. The highest antioxidant activity was obtained in the <3 kDa fraction, with IC50 values of 3,04 ppm (DPPH) and 2,99 ppm (ABTS), categorized as very strong antioxidants. These results demonstrate that ultrafiltration effectively separates short peptides with high antioxidant activity, enhancing the accuracy of bioactivity evaluations and expanding the potential applications of bioactive peptides.
       
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      http://repository.ipb.ac.id/handle/123456789/163459
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      • UT - Aquatic Product Technology [2455]

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      Indonesia DSpace Group 
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