Magnetic-propelled Fe3O4-chitosan carriers enhance l-asparaginase catalytic activity: a promising strategy for enzyme immobilization
Küçük Resim Yok
Tarih
2018
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Royal Soc Chemistry
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Magnetic-propelled carriers comprising magnetic Fe3O4-chitosan nanoparticles were immobilized with l-asparaginase (l-ASNase). The enzyme displayed enhanced catalytic activity in a weak magnetic field, and thermal and pH stabilities. The conjugated l-ASNase presented higher thermostability and wider range of pH stability in comparison with those of free l-ASNase. Moreover, the reusability of conjugated l-ASNase significantly improved after immobilization and it retained 60.5% of its initial activity after undergoing 16 cycles. The conjugated l-ASNase maintained more than 50% and 48% initial activity after 4 weeks of storage at 4 degrees C and room temperature, respectively. Furthermore, we reveal that the activity of conjugated l-ASNase onto magnetic Fe3O4-chitosan particles increased by about 3-fold in the weak magnetic field at certain frequencies and flux density compared with that of free l-ASNase. Considering these excellent attributes, the magnetic-propelled mechanism in the transporting and activation of l-ASNase can be used by enhancing the catalytic activity, stability, and efficiency in vital implications for medicinal biotechnology.
Açıklama
Anahtar Kelimeler
Core-Shell Nanoparticles, Iron-Oxide Nanoparticles, Covalent Immobilization, Chitosan Nanoparticles, Performance, Stability, Lipase, Nanospheres, Adsorption, Separation
Kaynak
Rsc Advances
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
8
Sayı
63
