German |
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English |
Comments |
Laborgerät
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Laboratory equipment
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Laboratory apparatus
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Labortier
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n
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Laboratory animal
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Laevan
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pl. Laevane
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Levan, levans
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Polymers of fructose
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Lag-Phase
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n
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Lag phase
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Period of little or no growth following
inoculation, as organisms adapt to a new medium.
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Lamelle
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f,
, -en
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Lamella, lamellae
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Layers; in bacterial cells, these are
probably layers of cytoplasmic membrane material.
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laminar
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adj
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Laminar
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Opposite of ‘turbulent’
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Lebendzellzahl
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Viable cell count
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lebensfähig
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adj
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Viable
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Able to grow (in/on the medium used)
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Lebensmittelvergiftung
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Food poisoning
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Legionärskrankheit
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Legionnaires’ disease
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Pathogen: Legionella pneumophila; First recognized from an outbreak at a
convention of the American Legion (military veterans)
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Leistungszahl
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n
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Power coefficient
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(Performance number)
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Leistungszahl
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Power number
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= Newton’s number; a measure of power
requirement in a stirred reactor; dimensionless
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Leitrohr
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Draft tube
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Leitungswasser
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n
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Tap water
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Note that ‘Leitung’ can also mean
‘conductivity’, and there is a relatively obscure chemical term,
‘conductivity water’, meaning highly purified water with very low ionic
content.
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Letheen
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Letheen
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Indicates a mixture of lecithin and Tween
used to inactivate antimicrobial agents
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Leuchtbakterien
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Luminescent bacteria
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Leuchtfeldblende
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Field diaphragm
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Microscopy
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Lichtbrechungsindex
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Refractive index
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lithotroph
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adj
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Lithotrophic
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Able to live on inorganic media
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Löcher
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Plaques
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Areas of no growth (usually circular) on
bacterial cultures on solid media, due to destruction of bacteria by
bacteriophage (bacterial viruses) (or by attack of Bdellovibrio bacteriovorus)
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Lochplatte
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Perforated plate
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Lochplatte
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Sieve plate
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Lochplatte
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Sparger
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A perforated plate or tube used to
produce small bubbles of air in a fermenter
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log
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log
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Often used to describe a change by a
factor of ten in the viable count
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logarithmisch
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Logarithmic
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Often used to describe a situation in
which the logarithm of the number of viable organisms increases or decreases
linearly with time
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Log-Phase
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n
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Log phase
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Growth phase in which cell numbers
increase by a constant percentage per unit time (plot of log[cell count] vs.
time is a straight line).
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lophotrich
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adj
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Lophotrichous
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Having several flagellae at one end of
the bacterial cell
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LP
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LP
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Long-pass (optical filter); the
abbreviation is not commonly used in English.
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LP
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Safety classification
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Production systems (esp. involving
genetically engineered organisms) are classified in increasing order of
safety provisions required, as LP1, LP2, LP3.
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Luciferase
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Luciferase
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Enzyme which catalyzes oxidation of
luciferin (as in lighting of fireflies)
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Luciferin
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Luciferin
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Compound which produces light on
oxidation; common in bioluminescence
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Lufteinlass
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m
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Air inlet
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Luftfilter
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m
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Air filter
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Luftmyzel
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Aerial mycelia
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Lysogenie
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Lysogeny
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Lysozym
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Lysozyme
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An enzyme which dissolves cell walls of
some species of bacteria, releasing ‘protoplasts’. If the medium does not
contain a relatively concentrated solute such as 20% sucrose, the protoplasts
absorb water, swell, and burst.
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Lysozym
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Lysozyme
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Enzyme which dissolves cell walls of some
Gram-positive bacteria
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Copyright © 2010 Denzel Dyer, all rights reserved.