کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6397350 1330675 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of pressure or temperature pretreatment of isolated pea protein on properties of the enzymatic hydrolysates
ترجمه فارسی عنوان
اثر پیشگیری از فشار یا دمای قبل از پروتئین نخود جدا شده بر خواص هیدرولیزات آنزیمی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش تغذیه
چکیده انگلیسی


- 100 °C pretreated isolated pea protein (IPP) had increased surface aromatic groups.
- High pressure (600 MPa) pretreated IPP had reduced exposure of aromatic groups.
- 400 and 600 MPa-pretreated IPP were less digested at low alcalase concentrations.
- Heat pretreatment of IPP reduced ACE-inhibition by the alcalase hydrolysates.
- High-pressure pretreatment of IPP increased renin inhibition by hydrolysates.

Commercial isolated pea protein dispersion (IPP, 1%, w/v) was pretreated with high pressure (200-600 MPa, 5 min at 24 °C) or heat (100 °C, 30 min) prior to hydrolysis using 1-4% (w/w) alcalase concentrations. Fluorescence spectroscopy showed that heat pretreated IPP had a 35% higher level of exposed hydrophobic groups (measured as fluorescence intensity, FI) than the untreated protein. In contrast, the 200 MPa pressure pretreatment produced a 15% increase in FI while 400 and 600 MPa pretreatments, respectively, caused 5 and 60% decreases in FI. Heat pretreatment of IPP enhanced hydrolysis into smaller peptide sizes when compared to peptides from the 24 °C pretreated protein. The 200 MPa pretreatment enhanced IPP hydrolysis into smaller peptides, especially at lower (1-2%) alcalase concentrations. Protein hydrolysates produced from heat-pretreated IPP were less active against angiotensin converting enzyme (ACE) when compared to those from the 24 °C pretreated protein. In general, heat or high pressure pretreatment of IPP favored production of ACE- and renin-inhibitory enhanced protein hydrolysates at a lower (1%) alcalase concentration.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Research International - Volume 54, Issue 2, December 2013, Pages 1528-1534
نویسندگان
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