کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
679673 1459953 2015 30 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Physico-chemical factors affecting the in vitro stability of phycobiliproteins from Phormidium rubidum A09DM
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Physico-chemical factors affecting the in vitro stability of phycobiliproteins from Phormidium rubidum A09DM
چکیده انگلیسی
The functionality and stability of phycobiliproteins (PBPs) phycoerythrin (PE), phycocyanin (PC) and allophycocyanin (APC) were investigated under various temperatures, pHs and oxidative stressors. All PBPs were thermostable up to 4-40 °C; however, their concentration decreased rapidly at 60-80 °C. The maximum stability of all PBPs was in the pH range 6.0-7.0. Decrease in PBPs content was found under high acidic (pH 2-4) and alkaline conditions (pH 8-12). The oxidizing agent (0.1-0.6%) showed the least effect on the stability of PBPs; however, 0.8-1.0% H2O2 caused significant loss of PBPs. Contrary to PE, PC and APC was more susceptible to an oxidizing agent. The chromophore associated with α- and β-subunit of PBPs and thus, their functionality (fluorescence) was severely affected under high temperature (60-80 °C), and oxidizing agent, as well as low (2-4) and high (8-12) pH. Contrary to PC and APC, functionality of PE was surprisingly maintained even at pHs 6-12 and under oxidative stress.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 190, August 2015, Pages 219-226
نویسندگان
, , ,