摘要:
A process for the production of sugar, mainly glucose, by the enzymatic degradation of cellulosic materials, particularly cellulosic wastes, which comprises hydrolyzing the cellulosic material in the presence of cellulase enzyme to produce a sugar solution and recovering from the hydrolysis products a major proportion of the cellulase enzyme used in the hydrolysis reaction for re-use. At least a portion of the required makeup cellulase enzyme is produced in a two-stage operation wherein, in the first stage, a portion of the output sugar solution is utilized to grow a cellulase-secreting microorganism, and, in the second stage, cellulase enzyme formation is induced in the microorganism-containing culture medium by the addition of an appropriate inducer, such as a cellulosic material. Cellulase enzyme is precipitated from the culture liquid by the addition of an organic solvent material, such as a low molecular weight alkyl ketone or alcohol, and the cellulase precipitate is then fed to the hydrolysis reaction.
摘要:
Immune serum globulins (ISG) can be made substantially free of infectious retroviruses by storing the ISG in a liquid state at conditions of pH, temperature and time sufficient to inactivate substantially all infectious retroviruses. Preferred inactivation methods involve use of either of two specified storage conditions: (1) at a pH equal to or less than about 4.25 at a temperature of about 27.degree. C. for at least 3 days, or (2) at a pH equal to or less than about 6.8 at a temperature of about 45.degree. C. for at least about 8 hours.
摘要:
Blood-coagulation-promoting products substantially free of thrombin are prepared from human blood plasma by contacting a human blood plasma fraction containing coagulation Factors II, VII, IX and X with an anion exchanger to adsorb the coagulation Factors, which are subsequently eluted from the anion exchanger. The eluate is treated to generate a substance having Factor VIII Inhibitor Bypassing Activity and being substantially free of thrombin, and activated Factor X.
摘要:
Antibody preparation purified using immobilized protein A and yet substantially free of protein A that may have solubilized during the purificaiton process. The antibodies include less than 15 ng protein A per mg of antibody, preferably less than 1 ng/mg. Low protein A content is obtained by first contacting the antibodies and solubilized protein A with an ion exchange resin under conditions to adsorb both. The antibodies and protein A are then sequentially eluted under conditions of increasing ionic strength.
摘要:
Protein A is selectively isolated from an antibody--Protein A mixture by exposing the mixture to an anion exchange material under conditions sufficient to adsorb both components and then sequentially eluting the antibodies and protein A under conditions of increasing ionic strength. Resulting antibody preparations have less than about 15 ng of Protein A per mg of antibody.
摘要:
There is disclosed a process for producing a covalently attached alpha-1-proteinase inhibitor - water soluble polymer complex useful for pulmonary emphysema therapy, a covalently attached alpha-1-proteinase inhibitor - water soluble polymer complex produced by the process, a composition thereof in a pharmaceutically acceptable carrier, and a method for treating pulmonary emphysema by administering to a human patient a therapeutically effective amount of the complex or preparation.
摘要:
A currency genuineness detection system using plurality of opto-electronic sensors with both transmission and reflective (including fluorescence) properties of security documents is developed. Both detection sensing strategies utilise integrated response of the wide optical band sensed under UV visible along with optional near infra red light illumination. A security document is examined under static condition. A window signal signature is thus possible from photodetectors responses for various kinds of documents of different denominations, kinds and country of origin. A programmable technique for checking the genuineness of a security document is possible by feeding a unique code of the currency under examination.
摘要:
There is disclosed an improved process for producing high purity antihemophilic factor concentrate from an antihemophilic factor-containing dispersion or solution isolated from blood plasma or a blood plasma fraction, wherein the improvement is in carrying-out two consecutive precipitations using a combination of precipitants in each precipitation, first a combination of 1-4% by weight, based on weight of solution, of polyethylene glycol and 0.1-0.2 ml of 1-3%, based on weight of suspension, aluminum hydroxide suspension per gram of protein in the starting dispersion or solution, followed by a combination of added polyethylene glycol to provide a final concentration of 9-13% by weight, based on weight of the resulting solution, and 10-20% by weight of glycine, based on weight of the polyethylene glycol solution, and 10-20% by weight, based on weight of the polyethylene glycol solution, of sodium chloride.
摘要:
The disclosure pertains to a concentrate for controlling bleeding in hemophilia, free of thrombin, heparin, thromboplastin activity, anticomplement activity, depressor activity, and activated Factor X, and containing coagulation Factors II, VII, IX, and X in non-activated form, having a specific activity of at least about 1.5 Factor IX units per milligram of total protein and a Factor IX: Factor VII ratio of at least about 6:1. In the method of the invention a blood fraction containing coagulation Factors II, VII, IX, and X is applied to an anion exchanger to adsorb the coagulation Factors, which are selectively eluted therefrom using an aqueous sodium chloride-citrate solution of increasing ionic strength. The eluate is treated to reduce its concentration of non-volatile salt and concentrated to yield the above product.
摘要:
A currency genuineness detection system using plurality of opto-electronic sensors with both transmission and reflective (including fluorescence) properties of security documents is developed. Both detection sensing strategies utilize integrated response of the wide optical band sensed under UV visible along with optional near infra red light illumination. A security document is examined under static condition. A window signal signature is thus possible from photodetectors responses for various kinds of documents of different denominations, kinds and country of origin. A programmable technique for checking the genuineness of a security document is possible by feeding a unique code of the currency under examination.