Analysis on Protein Profile and Amino acid of Edible Bird’s Nest (Collocalia fuchiphaga) from Painan

Penelitian ini bertujuan untuk menganalisa profil protein dan asam amino sarang burung walet yang berasal dari daerah Painan, Kabupaten Pesisir Selatan, Sumatera Barat. Analisis protein dilakukan dengan menggunakan metode Sodium Dodesil Sulfat Poliakrilamid Gel Elektroforesis (SDS-PAGE), sedangkan analisis asam amino dilakukan dengan menggunakan Kromatografi Cair Kinerja Tinggi (KCKT). Analisa ekstrak air sarang burung walet dengan SDS-PAGE menunjukan bahwa sarang burung walet terdiri dari 6 protein dengan bobot molekul masing-masing 147,2; 142,6; 133,4; 73,3; 66,2; dan 37,7 kDa. Hasil analisis asam amino dengan KCKT didapatkan 16 asam amino yang terkandung dalam sarang burung wallet, yang terdiri dari 7 jenis asam amino esensial yaitu Histidin (2,31%), Leusin (3,84%), Treonin (3,82%), Valin (3,93%), Metionin (0,48%), Isoleusin (1,80%), Fenilalanine (4,49%) dan 9 asam amino non esensial yaitu Asam Serin (4,56%), Aspartat (4,48%), Arginin (3,93%), Lisin (2,34 %), Prolin (3,64%), Asam glutamate (3,65%), Glisin (1,87%), Alanin (1,31%), dan Tirosin (3,92%). Serin merupakan asam amino dengan kadar tertinggi (4,56%), diikuti dengan Fenil alanine (4,49%) dan Asam aspartat (4,48%). Kandungan asam amino ini sedikit berbeda dengan kandungan asam amino sarang burung walet dari daerah dan negara lain.This study was aimed to analyze protein profile and amino acid composition of bird nest from Painan, Pesisir Selatan Distric, West Sumatra. Protein analysis was performed by Sodium Dodecyl Sulphate Polyacrilamide Gel Electrophoresis (SDS-PAGE), meanwhile High Performance Liquid Chromatography (HPLC) was used for analysis of amino acid. Analysis on water extract of bird nest by SDS-PAGE showed six bands which correspond to molecular protein which had molecular weight of 147.2; 142.6; 133.4; 73.3; 66.2; and 37.7 kDa, respectively. HPLC analysis demonstrated that bird nest was composed of 16 amino acids. Seven of them were essential amino acids; histidine (2.31%), leucine (3.84%), threonine (3.82%), valine (3.93%), methionine (0.48%), isoleucine (1.80%), phenylalanine (4.49%), and nine of them were non-essential amino acids; serine (4.56%), aspartic acid (4.48%), arginine (3.93%), lysine (2.34%), proline (3.64%), glutamic acid (3.65%), glycine (1.87%), alanine (1.31%), and tyrosine (3.92%). Serine was the highest percentage of amino acid in the bird nest (4.56%), followed by phenylalanine (4.49%) and aspartic acid (4.48%). The study also showed that composition of amino acid in this bird nest was slightly different with composition of amino acid in bird nest from other area