Abstract
Bioethanol is one of the alternative sources of oil resources which received attention with biodiesel. Many countries produce bioethanol from food sources such as corn and sugarcane, but it causes food-energy conflicts and farmland problem. So it needs to focus on new biomass which is sustainable, renewable, cost-effective and do not occurred any conflicts. Algae are one of the bioma
enzymatic browning reaction in apples or potatoes, etc. Some preservation methods require foods to be sealed after treatment to prevent recontamination with microbes; others, such as drying, allow food to be stored without any special containment for long periods.
Common methods of applying these processes include drying, spray drying, freeze drying, freezing, vacuum-packing, canning, preservin
in transesterification reaction of raw fat and oils.
By introducing Enzymatic engineering techniques , Ester transfer reaction is a technology to produce recombinant fat and oil
from routine things.
Connection of hydrolysis reaction and epoxidation
Connection of hydrolysis reaction and esterification
Connection of different chemical reaction and reaction except hydrolytic reaction
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
구성 성분을 <표 4>에 나타내었다.
홍조류 바이오 에탄올 제조 공정은 [당화공정] → [발효공정] → [분리 및 정제공정]으로
구성된다. 당화(saccharification) 또는 가수분해(hydrolysis) 공정은 홍조류 내에 존재하는 고분자 형태의 탄수화물을 발효 미생물이 이용할 수 있는 단량체(monomer)로 전환하는 공
하지 않아야 한다.
Ⅲ. 봉합사(수술봉합사)의 종류
1. Absorbable Suture material의 종류와 특징
1) Catgut
○ Chromic Catgut
- 큰혈관의 결찰, 요로 및 담도계의 봉합
- 근육, 근막의 봉합은 장력의 급속한 감소로 사용안함
- By enzymatic 90day. Tension Strength : at least 28days(2주 40%, 4주 0%)
- Tan 황갈색 6/0 ˜ 3
1. Introduction
‘enzyme’이라는 단어를 접했을 때 많은 사람들이 실험실에서 사용하는 것으로만 생각한다. 실제 생활과의 거리가 먼 것이라고 생각하는 경우가 많이 있다. 그러나 우리 삶의 많은 부분에 효소가 들어와 있다고 할 수 있다. 특히나 효소의 사용이 보편화 되고 많은 연구와 개발이 이루어
Fermentation process of cheonggukjan
Soybeans 10 to 20 hours in the hot water
and put the litter
↓
After cooling, place a warm place until 60 ℃
↓
Bacillus bacteria causes fermentation by breeding
⇛ Composition of soybeans becomes changed by
Bacillus subtilis(natto), Bacillus licheniformis,
Bacillus megaterium
Changing of ingredient - PH
By Bacillus subtilis p
New Alternative Energy Source!!
Biodiesel
Bioethanol
Biogas
Biobutanol
A gaseous, liquid, or solid
substance of biological
origin that is used as a fuel
Cost-effective
Sustainable
Alternate gasoline
1st Generation: Food Sources
Food-Energy Conflicts, Farmland Problem
2nd Generation: Cellulosic Source
Difficul