title: Development of High Hydrostatic Pressure Applied in Pathogen Inactivation for Plasma.
abstract: High hydrostatic pressure has been used to inactivate pathogens in foods for decades. There is a great potential to adapt this technology to inactivate pathogens in plasma and derivatives. To better evaluate the potential of this method, pathogen inoculated plasma samples were pressurized under different pressure application modes and temperatures. The inactivation efficacy of pathogens and activities of plasma proteins were monitored after treatment. The CFUs of E.coli was examined as the indicator of the inactivation efficiency. The factor V and VIII were chosen as the indicator of the plasma function. Preliminary experiments identified optimized treatment conditions: 200-250MPa, with 5×1 minute multi-pulsed high pressure at near 0°C (ice-water bath). Under this conditions, the inactivation efficacy of EMCV was >8.5log. The CFUs of E. coli were reduced by 7.5log, B. cereus were 8log. However, PPV and S. aureus cannot be inactivated efficiently. The activities of factor II, VII, IX, X, XI, XII, fibrinogen, IgG, IgM stayed over 95% compared to untreated. Factor V and VIII activity was maintained at 46-63% and 77-82%, respectively.
authors: Institute of Blood Transfusion, Chinese Academy of Medical Sciences (CAMS) & Peking Union Medical College (PUMC), Chengdu, Sichuan, China.
authors: Chunhui
authors: C
authors: Yang
authors: Institute of Blood Transfusion, Chinese Academy of Medical Sciences (CAMS) & Peking Union Medical College (PUMC), Chengdu, Sichuan, China.
authors: Guohui
authors: G
authors: Bian
authors: Institute of Blood Transfusion, Chinese Academy of Medical Sciences (CAMS) & Peking Union Medical College (PUMC), Chengdu, Sichuan, China.
authors: Hong
authors: H
authors: Yang
authors: Zhengzhou Feilong medic devices Co., Ltd, Zhengzhou, Henan, China.
authors: Xinmin
authors: X
authors: Zhang
authors: Institute of Blood Transfusion, Chinese Academy of Medical Sciences (CAMS) & Peking Union Medical College (PUMC), Chengdu, Sichuan, China.
authors: Limin
authors: L
authors: Chen
authors: Institute of Blood Transfusion, Chinese Academy of Medical Sciences (CAMS) & Peking Union Medical College (PUMC), Chengdu, Sichuan, China.
authors: Jingxing
authors: J
authors: Wang
mesh_terms: D001769:Blood / Q000378:metabolism / Q000382:microbiology* / Q000821:virology; D001793:Blood Preservation / Q000379:methods*; D001798:Blood Proteins / Q000737:chemistry; D002478:Cells, Cultured; D006801:Humans; D006874:Hydrostatic Pressure; D013242:Sterilization / Q000379:methods*
chemical_list: D001798:Blood Proteins