Original scientific paper

Effect of Inorganic Salts on the Growth of the Mushroom Morchella hortensis

Zdravko Duvnjak ; Hrvatska
Ivka Špinderk ; Hrvatska
Gavro Tamburašev ; Hrvatska

Abstract

It was found that M. hortensis could not grow in undiluted whey but it could in the whey diluted with water (Duvnjak et al. 1978).
From the results obtained in this work it can be seen that this organism can grow in undiluted whey when sodium nitrate, ammonium chloride or ammonium sulphate are added.
Relatively very low concentrations (0.2 — 0.3°/o) of those compounds in undiluted whey result in good yield of the mycelium.
The fact that the microorganism grows in diluted whey without any additions but cannot grow in undiluted whey means that inorganic salts act on the membrane transport in M. hortensis in undiluted whey.
Since the yield of the mycelial biomass, for the same quantity of whey is 2.5 times greater in undiluted whey with addition of those compounds than in diluted whey, it can be concluded that the salts are used by the microorganism as complementary sources of nitrogen.
The influence of the initial pH of the medium is especially strong with the addition of ammonium sulphate in undiluted whey.
The greatest yield of 2.5 g of dry mycelium was reached in 100 ml of undiluted whey with 0.8°/o of ammonium sulphate.

Keywords

Hrčak ID:

158370

URI

https://hrcak.srce.hr/158370

Publication date:

31.12.1980.

Article data in other languages: croatian

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