3,5-Dinitrosalicylic acid(DNS)는 오직 환원당 하고만 반응한다.
환원당은 알칼리성에서 3,5-dinitrosalicylic acid의 NO2기를 NH2기로 환원시켜 적갈색의 아미노생성물을 생성하며, 그 색깔은 일련의 표준물질에 대비하여 측정한다. 이 시약은 위험성이 덜하며, 당의 측정 및 비환원당을 환원당으로 가수분해 함으로
Let's see the process flow of cellulosic ethanol which we are interested in(Figure 1). At the upstream, biomass harvest undergoes a pretreatment and cellulose hydrolysis by enzymes and then fermented to ethanol through the points. The initial contract for each course are as follows.
[Figure 1] bioethanol process
① pretreatment of raw material
To increase the effectiveness of fibrin d
Lignocellulosic materials are renewable, largely unused, and abundantly available sources of raw materials for the production of fuel ethanol. Lignocellulosic materials can be obtained at low cost from a variety of resources, e.g. forest residues, municipal solid waste, waste paper, and crop residue resources. These materials contain sugars polymerized in form of cellulose and hemicellulose, whic
Abstract
Lignocellulosic ethanol production process, pretreatment, saccharification, fermentation, purification is divided into four steps.
The goal of the preprocessing step, after separating from the other ingredients, such as lignin and cellulose, which have the characteristics of hard and complex structures belonging to the upstream process, the microorganisms in the process of sacc
additional redox mediators, enzymes, which exibit redox properities and are able to directly exchange electrons with conducting materials, are applied.
Hemoproteins usually are able to exchange electrons directly with electrode.
Electron transfer proteins
ex. Cytochrome-c, oxidoreductase,
ferrocytochrome-c, O2 oxidoreductase …