Background: Freeze - Dried Plasma (FDP) has many advantages, which could be stored for a long \ufffd?term and transported across remote areas for providing medical treatments and emergency aid. Objectives: To study the standard process of freeze - dried fresh plasma. Subjects and methods: 10 samples of fresh plasma from volunteer donors were selected according to certain categories. Plasma samples were frozen at \ufffd?75oC in 12 hours, freeze - dried at - 45oC and at the atmospheric pressure of 0.04mbar with Dutch dryer Ly - TTE/DM8. The adequate freeze - drying time for every 100ml of plasma was 60 hours. The protein level, factor VIII, electrolysis, the pH of plasma before and after the drying process were evaluated. Results: Results of tracking protein level in comparison between before and after freeze - dry showed the components and levels of freeze-dried protein changed little, with no statistical significance (P>0.05). The clotting factor before and after freeze-dried retains standard activity. After the freeze-dried process, factor VIII achieved 0.80 Ul/ml, prothombin achieved >80%. However, prothrombin decreased clearly (P<0.05). Electrolytes and pH changed had no statistical significance (P> 0.05). Conclusions: The procedures are applicable for processing and manufacturing drying plasma for long-term-storage and medical treatment. \r\n', u'\r\n', u'\r\n', u'
Plasma

Background: Human albumin was produced and used in many countries. Cohn's technique had been used to precipitate albumin from human plasma. This technique was easy and cheap and the quality of the product was good. In Vietnam, human albumin had to import, but the prices was very expensive. Vietnam was having good plasma in large quantity and high quality. That\u2019s why research on production plasma albumin was essential.\r\n", u"Objectives: This study aimed at using Cohn's technique improved by Drohan and Van - Aken to produce standard albumin from human plasma. Subjects and method: Human plasma detected VIII-factor was used for present study. Plasma \ufffd?albumin was precipitated by ethanol at low temperature and pH. The collected albumins have been liophilizated and storage at 40C. The quality and quantity of Albumin was evaluated by quantitative analysis and protein \ufffd?electrophoresis. Results: The 418g of albumin powder was produced from 16 liters of plasma detected F \ufffd?VIII. The quality of this albumin come up to standard (>95%) and quantity of albumin collected from one liter of this plasma was 26g. Conclusion: In the Vietnamese condition, the technique of Cohn can be used to produce standard albumin for treatment.\r\n", u'
Albumins/ standards ; Plasma ;

Introduction: The need for gama \u2013 globulin, especially gama - globulin - anti \u2013 HBs, is huge in Vietnam. A number of patients cannot to afford use them due to the high price as they are imported. Meanwhile, Vietnam has high quality input sources for producing gama \u2013 globulin. \r\n', u'Objectives: To study the production process of gama - Globulin from Human Plasma and Standard gama - Globulin with Rich of Anti \u2013 HBs. \r\n', u'Subjects and method: 168 samples of human plasma from voluntary blood donors, which had been screened with for transfusion transmittable infections (TTLs), were chosen as plasma with rich of anti - HBs. The plasma with anti - HBsAg was precipitated with ethanol 25%, pH 6,9 to gain gama - globulin with rich anti - HBs, which was dried by Dutch Ly - 3 - TTE machine. Activation of anti - HBs gama - globulin was identified by a standard method of the degree of antibody specific for anti - HBsAg kit of BIORAD, \r\n', u'Results: The purity of the gama - globulin achieved was 93%, which was almost equal with the results of some foreign researchers (7.8), the activation of anti - HBs was 1:128 dilution degree. The productivity of gama - globulin gaining from 1 litter plasma was 6.0 gram. This new issue was first demonstrated in Vietnam. \r\n', u'Conclusion: We can domestically produce anti-Bs gama - globulin with high degree of activeness (1:128) from human plasma by the precipitating method with ethanol, pH and low temperature. \r\n', u'
Human plasma ; gama - globulin - anti - HBs ; Precipitation of ethanol ; pH and low temperature