Thermal Stability of Human Immunoglobulins with Sorbitol: A Critical Evaluation
作者:
Martin González,
Domingo A. Murature,
Gerardo D. Fidelio,
期刊:
Vox Sanguinis
(WILEY Available online 1995)
卷期:
Volume 68,
issue 1
页码: 1-4
ISSN:0042-9007
年代: 1995
DOI:10.1111/j.1423-0410.1995.tb02535.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
AbstractThe effect of the additive sorbitol on the thermal stabilization of human IgG was investigated by differential scanning calorimetry and size exclusion chromatography. In the presence of 33% sorbitol, the temperature at which denaturation of IgG began (Ti) was increased from 52 to 65°C. Similarly, the temperature of the maximum heat capacity (Tmax) was increased from 69 to 76°C. Sorbitol also decreased dimer aggregation and the extent of oligomerization during heating compared with IgG dissolved in phosphate buffer. Sorbitol at 33% prevented massive protein denaturation but a 10–15% of oligomerization of high molecular weight aggregates with turbidity could not be avoided when heating for 10 h at 60°C. The use of sorbitol 33% to avoid heat denaturation of human IgG during viral inactivation did not prevent protein aggregation or the appearance of turbidity. Consequently, further processing will be required to achieve a product suitable for pharmaceutical
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