Impact of bottom ash addition on Pleurotus ostreatus cultivation on coffee ground substrate.

The study aimed to explore the potential use of coal-fired power plant bottom ashes in Pleurotus ostreatus cultivation using spent coffee grounds. The study analyzed five compositions of growth substrate for mushrooms: pure coffee grounds (I) as a control sample; coffee grounds substrate with the addition of 1% (II); 5% (III); 10% (IV) bottom ash; and bottom ash alone (V). The study revealed that compared to the control sample (I), the addition of 1% bottom ash (II) did not affect the time of mycelium growth but slowed fruiting body growth by 4 days.

Accumulation of pollutants from fly ash in Pleurotus ostreatus and a substrate based on coffee grounds by elemental analysis using the ICP-OES method and photometric method.

The substrate mixtures were created in the study, using spent coffee grounds for Pleurotus ostreatus cultivation with the addition of straw and fluidized bed ash at 5 and 10 percent by weight relative to the total weight of coffee grounds. In order to determine the ability to accumulate heavy metals and the possibility of further waste management, analyses of micro- and macronutrients, biogenic elements, as well as the metal content of fungal fruiting bodies, mycelium and post-cultivation substrate were performed. The addition of 5 percent resulted in slower growth of mycelium and fruiting bodies, and with the addition of 10 percent, the growth of fruiting bodies was completely inhibited.

Effect of green and roasted coffee storage conditions on selected characteristic quality parameters.

The paper attempts to determine the best storage conditions for green and roasted coffee beans. Coffee beans were processed in various ways-some of them were washed or left in their natural state after harvesting, then they were stored in two types of packaging with different permeability, i.e.

Assessment of the Content of Fluorescent Tracer in Granular Feed Mixture.

This paper describes the use of fluorescence induced by UV radiation to evaluate the share of tracer in feed mixture. For the purpose of this study, three substances were used. They are as follows: Tinopal, Rhodamine B, and Uranine.