Meat is an important food for fulfill nutritional needs, many of meats are consumed as a source of highest quality nutrition for humans, especially as a source of protein. Papaya leaves contain the enzyme papain (a protase enzyme that can hydrolyze proteins), so that it can be used to soften meat. The purpose of this study was to look at an overview of protein profiles in five types of meat, namely goat, beef, buffalo, free-range chicken and broiler chicken which were soaked in papaya leaves. The protein profile of five types of meat was analyzed using the SDS-PAGE 12% method. The results showed that the control meat of goat, beef, buffalo, free-range chicken and broiler chicken which were not soaked in papaya leaves showed that there were many major protein bands compared to minor protein bands. Whereas in goat, beef, buffalo, free-range chicken and broiler chicken which have been soaked in papaya leaves, the results were different compared to the control, there were many minor protein bands. While the major bands only have 6 to 9 protein bands. Based on these results indicate that immersion with the enzyme papain contained in papaya leaves can break down peptide bonds, if it works on meat it can be broken down so the meat becomes tender and protein bands in the form of micromolecules.Daging merupakan bahan pangan yang penting dalam memenuhi kebutuhan gizi, banyak dikomsumsi sebagai sumber nutrisi yang berkualitas bagi manusia terutama sebagai sumber protein. Daun pepaya mengandung enzim papain (enzim protase yang dapat menghidrolisa protein), sehingga dapat digunakan untuk melunakkan daging. Tujuan penelitian ini untuk melihat gambaran profil protein pada lima jenis daging yaitu daging kambing, sapi, kerbau, ayam kampung dan ayam potong yang direndam daun pepaya. Profil protein lima macam daging dianalisis menggunakan metode SDS-PAGE 12%. Hasil penelitian menunjukkan pada daging kontrol yaitu daging kambing, sapi, kerbau, ayam kampung dan ayam potong yang tidak direndam daun pepaya menunjukkan terdapat banyak pita protein mayor dibandingkan pita protein minor. Sedangkan pada daging kambing, sapi, kerbau, ayam kampung dan ayam potong yang telah direndam daun pepaya menunjukkan hasil yang berbeda dibandingkan dengan kontrol yaitu pada semua daging terdapat banyak pita protein minor. Sedangkan pita mayor hanya terdapat 6 sampai 9 pita protein saja. Berdasarkan hasil tersebut menunjukkan bahwa perendaman dengan enzim papain yang terdapat dalam daun pepaya dapat memecah ikatan peptida, jika bekerja pada daging dapat diuraikan sehingga daging menjadi empuk, dan pita protein berbentuk mikromolekul.
THE INFLUENCE OF ORGANIC SOLVENT PROTEIN PRECIPITATION ON SDS PAGE PROTEIN PROFILE IN SERUM
