Treść książki

Przejdź do opcji czytnikaPrzejdź do nawigacjiPrzejdź do informacjiPrzejdź do stopki
Methodsofscreening,culturing,improvementandstorageofmicroorganisms...
ExtremelyacidicpH(pH2-4)
Lowtemperature(4-15°C)
Hightemperature(42-100°C)
NaClatgreatconcentraton
Presenceofatmosphericnitrogen
(N
Chitnasgrowthsubstrate
Treebark,roots
Grainpollen
Mediawithheavymetalsadditon
2
)
Cultureconditons
Acidophiles
Psychrophiles
Thermophiles
Nocardia,halophiles
Anaerobics
Lysobacter
Myxobacteria
Actnoplanes
Microrganismsaccumulatngheavy
metals
Typeofisolatedmicroorganisms
Thesearchformicroorganismswithdesiredcharacteristics
canalsobeacceleratedbyinoculationofthesamplestaken
frompreparedextracts,directlyontodiferentialmediaplates,
allowingtheisolationofmicroorganismswithspecificmetabolic
activity(Table1.2.2).
Producers
Pre-selectonrules
Antbiotcs
Table102010Methods
ofsfimulafing
thegrowthof
selectedgroups
ofmicroorganisms
byapplicafionof
appropriateculture
condifions
Table102020Examples
ofmethodsthatfavour
theacquisifionof
microorganismswith
specifcmetabolic
acfivifies
Inoculatononagarplateswithstrainsoftestmicroorganisms,e.g.
Staphylococcusaureus,Proteusvulgaris,Candidaalbicans,Penicillium
avellaneum.Growthinhibitonzonesareanindicatorofactvity.
β-lactamase-resistantantbiotcs
Inoculatononagarplateswithβ-lactamaseadditon.
Proteases
Amylases
Lipases
Phosphatases
Cellulases
Pectnases
Xenobiotcdecomposing
microorganisms
Inoculatononagarplateswithcasein.Coloniesthatproducelightening
zonesinthemediumareselected.
Inoculationonagarplateswithstarch.Selectionofcoloniesafter
stainingwithLugol’siodine(J/KJ).
Inoculatononagarplateswithemulsifiedoil.Selectonofcoloniesafer
precipitatonoffreefatyacidswithcalcium(Ca)ions.
Inoculatononagarplateswithphenolphthaleindiphosphate.Selecton
basedonthecolourchangeofthesubstratearoundthecolony.
Inoculatononagarplateswithphosphocellulases.Selectonofcolonies
thatproducetransparentzonesofenzymeactvity.
Inoculatononagarplateswithpectns.Selectonofcoloniesproducing
brightzonesonanopalescentbackground-reactonwithasolutonof
CTAB(cetyltrimethylammoniumbromide).
Inoculatononagarplateswithselectedxenobiotc,beingtheonlyor
mainsourceofcarbonandenergy.Analysisofthegrowingcoloniesin
termsoftheirdegradatonactvity.
25