micrococcus lysodeikticus
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2021 ◽  
Vol 9 (1) ◽  
pp. 64-72
Author(s):  
Syahrizal Nasution ◽  
◽  
Didah Nur Faridah ◽  
Eni Kusumaningtyas ◽  
Zakiah Wulandari ◽  
...  

Lisozim adalah enzim hidrolase yang bisa diisolasi dari putih telur ayam. Penelitian bertujuan untuk mengarakterisasi lisozim termodifikasi dari putih telur ayam lokal dengan SDS-PAGE dan mengukur aktivitas lisozimnya. Lisozim dari putih telur ayam Sentul yang terisolasi kemudian dimodifikasi dengan perlakuan panas. Lisozim dikarakterisasi dengan SDS-PAGE. Aktivitas lisozim diujikan terhadap Micrococcus lysodeikticus. Profil SDS-PAGE menunjukkan lisozim masih memunculkan sedikit ovotransferin dan ovalbumin sebelum dimodifikasi. Perlakuan suhu 60°C tidak mengubah profil SDS-PAGE dan hasilnya mirip seperti lisozim terisolasi awal tetapi perlakuan suhu 75°C menyebabkan ovotransferin menghilang. Setelah perlakuan suhu 90°C, selain ovotransverin menghilang, protein baru muncul yang diduga lisozim berbentuk dimer. Profil SDS-PAGE lisozim termodifikasi menjelaskan lisozim tetap mempertahankan aktivitasnya walaupun terjadi perubahan profil lisozim.


2020 ◽  
Vol 12 (2) ◽  
pp. 45
Author(s):  
Hidetaka Noritomi ◽  
Shunichi Kurihara ◽  
Nobuyuki Endo ◽  
Satoru Kato ◽  
Katsumi Uchiyama

We have found that HEWL (hen egg white lysozyme) is effectively immobilized on biochar through adsorption, and the amount of HEWL adsorbed on biochar is strongly dependent on the pH value of adsorption solutions. The structure of HEWL adsorbed on biochar changed by the pH value of adsorption solutions and became similar to that of native HEWL at acidic pH value, although the structure of HEWL solubilized in the solution was the same in the range between pH 4 and 9. On the other hand, the lytic activity of biochar-adsorbed HEWL toward Micrococcus lysodeikticus was markedly influenced by the pH value of adsorption solutions and increased with decreasing the pH value. Moreover, the addition of KCl to adsorption solutions enhanced the lytic activity of biochar-adsorbed HEWL.


2018 ◽  
Vol 81 ◽  
pp. 92-98
Author(s):  
Yulong Zhang ◽  
Di Wang ◽  
Zao Zhang ◽  
Zhangping Wang ◽  
Daochuan Zhang ◽  
...  

2018 ◽  
Vol 162 ◽  
pp. 98-107 ◽  
Author(s):  
Valentina Dinca ◽  
Diana Zaharie-Butucel ◽  
Luciana Stanica ◽  
Simona Brajnicov ◽  
Valentina Marascu ◽  
...  

2017 ◽  
Vol 89 ◽  
pp. 525-531 ◽  
Author(s):  
Alina Vasilescu ◽  
Szilveszter Gáspár ◽  
Mihaela Gheorghiu ◽  
Sorin David ◽  
Valentina Dinca ◽  
...  

2012 ◽  
Vol 2 (1) ◽  
pp. 7-11 ◽  
Author(s):  
Ghazala Yunus ◽  
Seema Srivastava ◽  
Vishwambhar D. Gupta

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