Progress in the Development and Use of a Named Biopolymer

Chemistry PAT Question 1 Polyhydroxybutyrate (PHB) is a biopolymer with properties really uniform to that of polypropylene, though has all the benefits that come with biopolymers. PHB was first introduced to the scientific biotic community by the scientist Maurice Lemoigne in 1926. He comment that to produce PHB you cl find particular micro-organisms such as Alcaligenes Eutrophus or Bacilius megaterium undergoing physiological centering in an apparatus such as an agar supply to allow the micro-organisms to multiply. In golf-club to achieve this stress in that location is a bar to the amount of nitrogen the micro-organisms can take a discover thereby altering its nutrition. This is quite an efficient method of output signal and the amount of the PHB polymer yielded is around 30-80% of the change weight of the micro-organisms used. Even though this method is efficient it is still not quite economically viable as there is the high cost of development the agar solu tion, petri dishes and the removal of the nitrogen. More recently as this biopolymers potential to society has become more prominent, scientists are trying to find more efficient and sustainable means to produce it. In 1992 the idea of using genetically modified plants to produce PHB was effective at Michigan State University.

By using the genes from 2 bacteria producing organisms such as Alcaligenes Eutrophus, they could insert them into cress plants with the postulate of these plants producing the PHB. This process worked and the plants and some of their offspring produced around 14% of the run dry weight as PHB. Although this is not as high admit as when it is produced in the petri dishes, it is a much more economicall! y viable method of production and hence would break off a much more substantial impact to society. Chemically PHB is from a group of biopolymers known as the polyhyroxyalkanoates. Figure 1 at a lower place shows other examples of biopolymers in this group. These types of biopolymers are all biodegradable plastics give them quite a high demand...If you want to get a full essay, order it on our website: OrderEssay.net

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