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ŠUMARSKI LIST 9-10/1979 str. 61     <-- 61 -->        PDF

Wachmeister , C. A. (1956): Indentification of liehen acids by paper chromatography.
Botan. Notiser, 109, 313—24.
Zolovich, G., Velev, T. Mikhailova, S., D i 1 o v, K. (1972): Odorous substances
in cultivated microalgae. CHABA8, 77, 1972, 5856v.


Summary


BIODECOMPOSITION OF PHENOL AND ACETONE BY MEANS OF LICHENS
AND THEIR MICROFLORA


Lichens are well known indicatios of air pollution by poisonous gases
(S02, SO:!, HF, HäS, Cl2, HCl, NOx, fosgen etc.), which appear in the neighborhood
of steam power stations, copper and iron smelters, refuse incinerations,
etc. It has been observed that considerable air-and water - pollution by
naphta derivates doesn´t influence lichen microflora. The very good growth
of some lichen species (Collema, Parmelia, Xanthoria) has been observed on the
concrete bridge walls above an open municipal collector between Zagreb and
Ivanja Rijeka. It has lead us to examine lichens and their microflora bioactivity,
relative to their possible decompositon of phenol (50—1500 mg/1) and of
acetone (100 — 4000 mg/1). These were used as the only source of carbon, at
temperatures of 20, 25 and 37« C, and for 4, 7, 14 and 30 days´ incubation. Lichens
used in these experiments were sampled from various sites, in various seansons,
and at different places in Yugoslavia.


Lichens and their microflora are capable of using phenol and acetone as
the only source of carbon. The degree of biodecompositon and mineralization
of phenol and acetone are more dependent on the kind of lichens and their
microflora composition, and less on the media used and on the geographical
location from which the lichens were simpled.


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