KANDUNGAN ASAM LEMAK DAN KARAKTERISTIK FISIKO-KIMIA MINYAK IKAN LELE DAN MINYAK IKAN LELE TERFERMENTASI (FATTY ACID CONTENTS AND PHYSICO-CHEMICAL CHARACTERISTICS OF CATFISH OIL AND FERMENTED CATFISH OIL)

Iskari Ngadiarti, Clara M Kusharto, Dodik Briawan, Sri Anna Marliyati, Dondin Sayuthi

KANDUNGAN ASAM LEMAK DAN KARAKTERISTIK FISIKO-KIMIA MINYAK IKAN LELE DAN MINYAK IKAN LELE TERFERMENTASI (FATTY ACID CONTENTS AND PHYSICO-CHEMICAL CHARACTERISTICS OF CATFISH OIL AND FERMENTED CATFISH OIL)

Abstract


ABSTRACT

Catfish oil and fermented catfish oil have not been developed and commercially produced as catfish derived products. Various processing of catfish oil will change both the composition and physico-chemical characteristics. The objective of this study was to identify the composition of fatty acids and physico-chemical characteristics of both catfish oil (MIL) and fermented catfish oil (MILT). Results showed that fatty acid composition of catfish oil was MUFA (36.12%)> PUFA> (32.43%)> SFA (31.45%), while the composition of fermented catfish oil was MUFA (42.96%)> SFA (42.32%)> PUFA (15.39%). The fermentation process with lactic acid bacteria increased the content of stearic acid but decreased the content of linoleic acid and linolenic acid. Physical and chemical characteristics of MIL and MILT were almost similar, they indicated oxidation process, based on melting point, viscosity, and thiobarbituric acid values. Therefore, in the production of catfish oil or fermented cat fish oil, it is necessary to add spices and/or nutrient as antioxidants sources.

Keywords: catfish oil, PUFA, MUFA, SFA and CLA

 

ABSTRAK

Minyak ikan lele (MIL) dan minyak ikan lele terfermentasi (MILT) sebagai produk turunan dari ikan lele masih belum banyak dikembangkan dan diproduksi secara komersial. Berbagai proses pengolahan minyak dapat mengubah komposisi dan karakteristik fisiko-kimia minyak ikan lele. Tujuan dari penelitian ini adalah untuk mengidentifikasi komposisi asam lemak dan karakteristik fisiko-kimia dari minyak ikan lele (MIL) dan minyak ikan lele terfermentasi (MILT). Komposisi asam lemak pada MIL secara berurutan adalah MUFA (36,12%) > PUFA (32,43%) > SFA (31,45%), sedangkan setelah difermentasi menjadi MILT terjadi perubahan yaitu MUFA (42,96%) > SFA (42,32%) > PUFA (15,39%). Jenis asam lemak jenuh yang mengalami peningkatan  pada MILT adalah asam lemak stearat, sedangkan asam lemak tidak jenuh ganda yang mengalami penurunan adalah asam linoleat dan linolenat yang menyebabkan kadar asam arakidonat dan CLA meningkat. Karakteristik fisiko-kimia MIL dan MILT hampir sama yaitu menunjukkan terjadinya proses oksidasi yang didasarkan pada nilai viskositas, titik cair, dan bilangan TBA. Oleh karena itu, untuk mengurangi proses oksidasi lemak, didalam pengolahan kedua minyak ini perlu ditambahkan bumbu atau zat gizi kaya antioksidan. [Penel Gizi Makan 2013, 36(1):82-90]

Kata kunci: minyak ikan lele,  PUFA, MUFA, SFA, CLA


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Penelitian Gizi dan Makanan ( p-ISSN: 0125-9717. e-ISSN: 2338-8358) is published by National Institute of Health Research and Development, Ministry of Health of Republic of Indonesia

http://ejournal.litbang.depkes.go.id/index.php/pgm/


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