Abstract:
:Silkworm pupae protein is a good source of high quality protein. The hydrolyzates of silkworm pupae protein catalyzed by neutrase, pepsin, acidic protease (Asperqiius usamii NO. 537), flavourzyme, alcalase, and trypsin with inhibitory activity on angiotensin I-converting enzyme (ACE) were identified by HPLC. The hydrolyzates catalyzed by acidic protease exerted the highest inhibitory activity on ACE. The hydrolyzing conditions were optimized by one-factor, factional factorial (FFD), and center composite (CCD) design methods, and response surface methodology (RSM). Statistical analyses showed that regression of the second-order model equation is suitable to describe ACE inhibitory bioactivity. The predicted inhibitory activity of hydrolyzates on ACE was 73.5 % at a concentration of 2.0 mg/ml. Optimized RSM technique decreased IC(50) of hydrolyzates inhibiting ACE to 1.4 mg/mL from 2.5 mg/ml. The molecular weight of the components of the hydrolyzates with inhibitory activity on ACE varied from less than 500 to about 1000 Da by ultra-filter analysis. These studies suggest that hydrolyzates of silkworm protein contain ACE inhibitory activity that could form a potential source of ACE inhibitor drugs.
journal_name
Curr Pharm Biotechnoljournal_title
Current pharmaceutical biotechnologyauthors
Wang W,Shen S,Chen Q,Tanga B,He G,Ruan H,Das UNdoi
10.2174/138920108785161578subject
Has Abstractpub_date
2008-08-01 00:00:00pages
307-14issue
4eissn
1389-2010issn
1873-4316journal_volume
9pub_type
杂志文章abstract:BACKGROUND:Carbon nanotubes (CNTs) have been considered highly successful and proficient in terms of their mechanical, thermal and electrical functionalization and biocompatibility. In regards to their significant extent in bone regeneration, it has been determined that CNTs hold the capability to endure clinical appli...
journal_title:Current pharmaceutical biotechnology
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journal_title:Current pharmaceutical biotechnology
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更新日期:2009-02-01 00:00:00
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