BIOL 3P43 Lecture 7: Lecture 7
11 Feb 2019
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Document Summary
Read the readings: biopolymers, large, multi-unit macromolecules. Used in food processing, manufacturing, & pharmaceuticals: can be derived from microorganisms, animals and plants, genetic engineering, new biopolymers, replace synthetic with biological equivalents, modify existing biopolymers to enhance properties, xanthan gum. 01/02/2019: biopol, what are plastics, synthetic organic polymers, molecular weights can range from thousands to millions. Lack sunlight so their structure remains unaltered and non-degradable: starch holds together short fragments of polyethylene. Phb at low % of cell dry wt: variety of bacteria produce inclusions which containing pha"s one of which is. Limiting growth factor: advantages to bacterial plastics, completely degradable by bacteria, do not require special environmental conditions. X. campestris is the most important species of the genus. It is subdivided into pathovars (pvs) based on host range, geographical distribution and other factors: for example: x. campestris pv. campestris causes brown rotting lesions on cabbage and cauliflower leaves.
