Biochemical and physicochemical analysis of fish protein isolate recovered from red snapper (Lutjanus sp.) by-product using isoelectric solubilization/precipitation method

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Abstract

The effect of acid- and alkali-process on biochemical and physicochemical characteristics of fish protein isolate from red snapper (Lutjanus sp) by-product was evaluated. Protein recovered by alkali process (16.79%) was higher compared to acid process (13.75%). Reduction of lipid content and total volatile basic nitrogen (TVB-N) exhibited in both treatments indicated both process improved fish protein isolate recovered from red snapper by-product. In addition, the increasing of water holding capacity and oil binding capacity were observed. However, high peroxide value of fish protein isolate was showed in both treatment. This finding indicated that acid and alkali process can be used as a useful method to recover proteins from red snapper by-product. Alkali process gave a protein isolate with better overall quality compared to acid process.

Original languageEnglish
Article number012061
JournalIOP Conference Series: Earth and Environmental Science
Volume137
Issue number1
DOIs
Publication statusPublished - 13 Apr 2018
Event7th ASEAN-FEN International Fisheries Symposium, IFS 2017 - Batu City, East Java, Indonesia
Duration: 7 Nov 20179 Nov 2017

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