World's Largest Sitka Spruce Tree. A celebrated Sitka spruce (Picea sitchensis) on Klootchy Creek near Seaside, Oregon, receives so many visitors that recently a $50,000 boardwalk was constructed to preserve its roots from compaction. It is perhaps 700 years old, and truly amazing in stature.
Bacteriocins are antibacterial proteins produced by bacteria that kill or inhibit the growth of other bacteria. Many lactic acid bacteria (LAB) produce a high diversity of different bacteriocins. Though these bacteriocins are produced by LAB found in numerous fermented and non-fermented foods, nisin is currently the only bacteriocin widely used as a food preservative.
A bacteriophage is a virus that preys on bacteria. It infects bacteria by inserting its genetic material into the host cell. To do this, the bacteriophage attaches itself to the surface of the host with tail fibers.Afterward, the genetic material uses the bacteria's replication apparatus to duplicate itself.ritten by: Vasanthâ¢edited by: dianahardinâ¢updated: 4/15/2011. A bacteriophage is a virus that infects bacteria. The structure of a bacteriophage consists of a head and tail. It contains nucleic acid and proteins. The length of a bacteriophage is between 24 and 200 nm.