Activity of beta-galactosidase in soil continuously supplemented with lactose
Jazyk angličtina Země Spojené státy americké Médium print
Typ dokumentu časopisecké články
PubMed
6793470
DOI
10.1007/bf02927259
Knihovny.cz E-zdroje
- MeSH
- Bacteria metabolismus MeSH
- beta-galaktosidasa metabolismus MeSH
- galaktosidasy metabolismus MeSH
- houby metabolismus MeSH
- laktosa metabolismus MeSH
- půdní mikrobiologie * MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- beta-galaktosidasa MeSH
- galaktosidasy MeSH
- laktosa MeSH
The microflora of the chernozem soil mineralized 62% of the lactose retained on a column consisting of three 10-g layers of the soil at a daily flow of 48 mg of the sugar. Only 45% of the sugar was mineralized when the daily flow was 136 mg. The highest value of the beta-galactosidase activity in the system of heterocontinuous cultivation was two-fold with respect to batch cultivation. At a higher sugar concentration the enzyme activity in steady state was the same in the whole soil column. This value was reached first in the middle layer of the soil. At a lower concentration of the flowing sugar in steady state the highest enzyme activity was detected in the middle layer of the soil. In the upper layer the enzyme activity was one half, in the lower layer it began to decrease after reaching its maximum after 4 d of the incubation.