Abstract:
The present invention provides a magnetic core/shell nanoparticle comprising: a) a core part that is formed as magnetic material and boron are bonded; b) a silica shell part that wraps the core; c) an outermost shell part that warps the shell and includes silica; d) an outermost shell surface part that is obtained by improving the surface of the outermost shell through one or more substituents selected from the group consisting of -NH_2, -COOH, -NHS, and -biotin; and e) an enzyme or a biomaterial that is fixed to the shell surface part. The core/shell nanoparticle including the immobilized enzyme or biomaterial according to the present invention has the surface that is improved by means of amine groups and the like. The immobilization is optimized by means of a covalent bond of the enzyme or biomaterial and a carboxyl group. Even though the nanoparticle is used several times, the activity of the enzyme or biomaterial can be maintained at a high level.
Abstract:
본 발명은 락툴로오스 합성용 마이크로 반응기 및 락툴로오스 생산 방법에 관한 것으로, 구체적으로 마이크로 반응기에 고정화된 베타-갈락토시다제에 의하여 유청 및 과당을 포함하는 기질과 반응시켜 경제적으로 프리바이오틱스의 하나인 락툴로오스의 생산이 가능하며, 생물학적인 연속 생산이 가능한 마이크로 반응기 및 락툴로오스 생산 방법에 관한 것이다.
Abstract:
PURPOSE: A manufacturing method of a KNbO3 nanowire is provided to obtain the KNbO3 with high yield, in short time by using an Nb metal wire. CONSTITUTION: A manufacturing method of a KNbO3 nanowire comprises a step of conduct reaction of mixed solution of niobium metal powder and potassium hydroxide aqueous solution at 130-170 °C for 6-36 hours, to obtain the KNbO3 nanowire. The manufacturing method of the KNbO3 nanowire additionally includes a step of injecting the KNbO3 nanowire into distilled water, centrifugating, washing, and drying the same. The washing is repeated until the time the pH of the nanowire reaches to 7. The manufacturing method of the KNb03 nanowire additionally includes a step of heat treating the nanowire at 250-460 °C for 0.5-1 hours, to convert the crystal phase of the nanowire into orthorhombic system. The thickness of the Knb03 nanowire has a thickness of 60-90 nm and 3.5-6.5 Mm. The crystal phase of the nanowire at room temperature is a monoclinic system.
Abstract:
본 발명은 셀로비오스 디하이드로게나제를 공유결합(covalent binding)을 이용하여 담체에 고정화시키기 전에 전처리하는 방법에 관한 것이다. 구체적으로 셀로비오스 디하이드로게나제를 담체에 고정화시키기 전에 셀로비오스 디하이드로게나제 용액에 단당류, 이당류, 다당류 또는 이들의 혼합물을 첨가하여 반응시키는 전처리 과정을 통하여 공유결합에 의한 셀로비오스 디하이드로게나제의 고정화 시 발생하는 활성도의 감소를 억제하고 여러 번 재사용할 경우에도 셀로비오스 디하이드로게나제의 활성을 유지할 수 있다.
Abstract:
PURPOSE: A mannanase isolated from Clostridium cellulovorans is provided to ensure excellent enzyme activation and to effectively produce biofuel from ligneous biomass. CONSTITUTION: A mannanase isolated from Clostridium cellulovorans contains has an amino acid sequence of sequence number 1. A gene encoding the mannanase has a base of sequence number 2. A recombinant vector contains the gene. A method for decomposing ligneous biomass comprises a step of treating the ligneous biomass with the mannanase. A composition for decomposing ligneous biomass contains a complex of mini CbpA and endoglucanase E as an active ingredient.
Abstract:
PURPOSE: An immobilizing method for glucose isomerase through pretreatment is provided to maintain enzyme activity. CONSTITUTION: An immobilizing method for glucose isomerase by covalent bond comprises a step of reacting the glucose isomerase with monosaccharides before immobilization. The monosaccharides are pentose or hexose. The concentration of the monosaccharide is 0.5-3.0 M. The immorbilization is performed at 15°C-25°C for 6-30 hours.
Abstract:
PURPOSE: A method for culturing microorganism by mixed culture is provided to improve microorganism growth and metabolic product productivity. CONSTITUTION: A method for culturing microorganism comprises a step of mixing and culturing a first microorganism and a second microorganism. The second microorganism has a cellular activity-remove/attenuated microorganism. The first microorganism is Acremonium sp. The second microorganism is E.coli, Ankistrodesmus sp., S. hygroscopicus subsp. The first microorganism is pre-cultured before mixing the second microorganism.
Abstract:
PURPOSE: A method for culturing microorganisms is provided to promoted growth or differentiation of microorganisms and to improve productivity of metabolites. CONSTITUTION: A method for culturing microorganism comprises a step of adding solid materials having 0.9-2.5 specific gravity. The solid material is a silicon. The solid material is a spherical, cylindrical, cone, trapezoid cylindrical, or hexahedral shape. The average diameter of the solid material is 0.1-100 mm. The microorganism is mycelium microorganism. The mycelium microorganism is Acremonium chrysogenum. The microorganism is cultured by shaking or stirring at 150-500rpm and 20-35°C for 48-240 hours.
Abstract:
PURPOSE: Buffer compositions for a cathode electrolyte of enzymatic fuel cells are provided to enhance enzyme activity and stability of the enzymatic fuel cell, to make a suitable electron transport environment, and to increase a voltage, a current, and a power density. CONSTITUTION: Buffer compositions for a cathode electrolyte of enzymatic fuel cells include a complex phosphate-MOPS buffer. The complex phosphate-MOPS buffer is manufactured by mixing the phosphate buffer and the MOPS buffer with a weight ratio of 4:6 ~ 6:4, respectively. The complex phosphate-MOPS buffer has Ph of 6.5-7.5. The cathode electrolyte of the enzymatic fuel cell includes hydrogen peroxide(H_2O_2) and ABTS(2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt).