Aquacultura Indonesiana (2005) 6 (3) : 109a��113

Potensi Senyawa Bioaktif Karotenoid Silase Ikan dari BerbagaiA�Produk Perikanan Laut Untuk Pakan Akuakultur

Agung Sudaryono1 dan Endang Kusdiyantini2

1 Jurusan Perikanan, Fakultas Perikanan dan Ilmu Kelautan UNDIP
Jl. Hayam Wuruk 4A, Semarang, Jawa Tengah; agungsud@telkom.net
2 Jurusan Biologi, Fakultas MIPA Universitas Diponegoro
Kampus Tembalang, Semarang, Jawa Tengah

Abstract

Agung Sudaryono and Endang Kusdiyantini. 2005. The potency of bioactive carotenoids in fish silaseA�made from different fisheries product wastes for aquaculture feeds. Aquacultura Indonesiana, 6 (3) : 109a��113.A�This study was designed to evaluate the potential of fish silage made from marine materials (shrimp head, blue crabA�waste, mud crab waste, squid and tigawaja trash fish) as sources of bioactive substances of carotenoid for aquacultureA�feeds. The raw materials and the fish silage were analysed for the carotenoid contents through an extraction of theA�materials with tetrahidrofuran and injection by microsyringe using a HPLC (Merk/lmbada/max 461). The fish silageA�were manufactured by mixing 3% formic acid and stored for 7 days. Carotenoid analysis showed that I?-caroteenA�was the major carotenoid pigment found in all marine materials with tigawaja trash fish had the highest I?-caroteenA�content (57.481 mg/ 100 g) among the others. Shrimp head had the highest aztaxanthin level (22.485 mg/100 g). TheA�manufacture of fish silage, in general, resulted in the decreased carotenoid contents, however some the fish silageA�had a higher carotenoid content. The aztaxanthin levels in squid increased 240% from the fresh (3.748 mg/100 g) toA�the silage (33.462 mg/100 g) and the zeaxanthin levels in blue crab waste increased from 26.335 mg/100 g (the fresh)A�to 33.462 mg/100 g (the silage). The carotenoid source potency of the squid silage was high for aztaxanthin, the blueA�crab silage was high for zeaxanthin and lutein contents and the tigawaja trash fish was high for i??-caroteen content.A�This study indicates that the bioactive substances contents of carotenoid (aztaxanthin) can be significantly improvedA�by the manufacture of fish silage. The fish silage manufactured of squid, blue crab waste, and trashfish tigawajaA�were found to be the most potential carotenoid source for aztaxanthin, zeaxanthin, and i??-caroteen, respectively inA�formulated diets for aquaculture.

Keywords: Fish silage; Carotenoid; Aztaxanthin; Zeaxanthin; i??-caroteen

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