lag phase


Also found in: Dictionary, Thesaurus, Legal, Encyclopedia.
Related to lag phase: Log phase

lag phase

a brief period in the course of the growth of a bacterial culture, especially at the beginning, during which the growth is very slow or scarcely appreciable.

lag phase

Etymology: Dan, lakke, go slowly; Gk, phasis, appearance
a time span during which bacteria injected into a fresh medium have not begun to multiply, although they may enlarge.

lag phase

Emergency medicine The period between when a person is exposed to a toxic inhalant–eg, cadmium fumes, dimethyl sulfate, methyl bromide, ozone, nitrogen oxides, phosgene, phosphorus compounds and others and development of pulmonary edema–up to 12 hrs

lag phase

  1. the stage of growth of microbial cells where nucleic acids and proteins are synthesized, but there is no cell division.
  2. an adaption stage. See GROWTH CURVE
References in periodicals archive ?
2011) who found that lag phase was basically negligible ([lambda] =0) in all of the cases, which from a biological perspective is invalid, since it would break the assumption that microbial consortia were formed by spontaneous generation and thereby these models would not be suitable to predict methane production.
Karpouzas and Walker (2000) suggested that these longer lag phases might because of the requirement of larger microbial number and acclimation period to begin enhanced biodegradation.
Thus, a lag phase of 10 days was required for methanogens to acclimatize the feedlot manure.
Future research to work out the regulatory mechanisms behind these processes and the switch from lag phase to exponential growth will tell us more about how Salmonella can flourish in different environments, and could point to new ways of controlling its transmission in the food chain.
This study reveals that, there is no observation of immediate cell growth on microcarrier but the lag phase was about 24 and cells reached confluence six days after inoculation.
Thus, between day 0 and day 3, the cells were in their lag phase whereas after day 3, the cells entered the exponential phase.
At this phenol concentration, in the absence of GAC, the suspension cells experienced a short lag phase of about 5 h before phenol was gradually degraded, concomitant with cell growth.
where KW is kernel weight, TT is thermal time after anthesis, a is the y-intercept (mg), b is the kernel growth rate during the lag phase (rag [degrees][Cd.
5 [micro]M-10 [micro]M) in the presence of Cu(II) a concentration-dependent increase in the lag phase was observed.
The PPC on fillets stored at 4 [degrees]C did not show any lag phase and grew rapidly; while APC of fillets stored at 0 [degrees]C had two days of lag phase.
We computed the lag phase of oxidation using the time course curve (21) from the three indices of oxidation.
The culture incubated at -2[degrees]C demonstrated a relatively longer lag phase when compared to the culture grown at 22[degrees]C, which is probably due to the slower metabolic rates at colder temperatures.