کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7595901 | 1492126 | 2014 | 41 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Bioactive peptides from caseins released by cold active proteolytic enzymes from Arsukibacterium ikkense
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Bioactive peptides from caseins released by cold active proteolytic enzymes from Arsukibacterium ikkense Bioactive peptides from caseins released by cold active proteolytic enzymes from Arsukibacterium ikkense](/preview/png/7595901.png)
چکیده انگلیسی
Proteolytic enzymes secreted by the cold-adapted microorganism Arsukibacterium ikkense were tested for their ability to degrade caseins at low temperature and produce bioactive peptides. The caseins were extensively degraded (90%) after 24 h of hydrolysis at 5 °C and completely degraded at 25 °C, and many novel peptides were formed. The most hydrolysed sample showed high angiotensin I converting enzyme (ACE)-inhibitory and antioxidant activity, and a number of potent ACE-inhibitory and antioxidant peptides were identified. The presence of tyrosine seemed fundamental for both ACE-inhibitory and antioxidant activity, while phenylalanine seemed to potentiate the antioxidant activity. The novel peptide YPELF was found to have strong radical scavenging and lipid oxidation inhibitory activities, with IC50 for both around 3.5 μM. None of the hydrolysates showed antimicrobial activity. Secreted enzymes from cultures of A. ikkense could thus be a valuable enzyme preparation for inexpensive, energy-efficient production of potent bioactive peptides from caseins in milk at low temperatures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 165, 15 December 2014, Pages 205-215
Journal: Food Chemistry - Volume 165, 15 December 2014, Pages 205-215
نویسندگان
Cristian De Gobba, Gorazd Tompa, Jeanette Otte,