Ⅰ. 서론
생물권에는 약 150만종에 달하는 각종 생물이 서식하고 있다. 단생질소고정생물이란 다른 생물(식물, 미생물 등)과 공생관계를 갖지 않고 자유생활상태에서 질소고정을 하고 있는 생물이다. 호기성균은 생장과 질소고정에 산소를 필요로 하고, 통성혐기성군은 배지에 질소화합물이 있을 때는
1930’s
omega-3 fatty acids have been known as essential to normal growth and health
1990’s
awareness of their health benefits has dramatically increased
polyunsaturated fatty acids with a double bond (C=C) starting
after the third carbon atom from the end of the carbon chain.
The fatty acids have two ends
—the acid (COOH) end and the methyl (CH3) end.
Subject
in
Nowadays, ‘eutrophication’ presents as one of the most serious ecological problems of open water sources such as lakes, oceans and reservoirs. It can be occurs naturally over centuries as lakes age and filled in with sediments, or acid rain. However, it has been rapidly increasing caused by human activities like fertilizers, municipal sewage, and wastewater from the factory. The Baltic Sea is
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
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