Is the 5-day Dissolved Oxygen Uptake associated with the microbes or the bran?
The dissolved oxygen uptake rate (DOUR) is associated with the microbes in PolySeed. The bran is simply a carrier for the microbes and not a food source, although it can be with time (normally over 6 hours). Once PolySeed is hydrated, the microbes soak off of the bran. No bran should be used in your test so it is very important to not draw any bran into the pipette.
Related Questions
- Do hyperthermophiles (microbes that live above 100 degrees Celsius) from the subsurface biosphere need oxygen?
- If bran is introduced into the BOD bottle will it adversely affect the 5-day dissolved oxygen uptake rate?
- What are the possible complications or side effects associated with the hyperbaric oxygen treatments?
