Abstract
Identifying the most suitable lithium compounds for fungal growth is important for the lithium (Li) enrichment of mushrooms. However, enrichment thus far has been carried out using LiCl. In an effort to identify an alternative source of lithium, we investigated the effect of five lithium compounds on lag phase, growth rate and biomass of ten species of white-rot fungi. The objective of this work was to make a screening of promising lithium compounds for further studies of Li enrichment of mushrooms. The fungal growth was affected depending on the species and lithium form tested. Lithium sulfate and lithium chloride were found to be the most promising candidate compounds for the Li enrichment of mushrooms. Key words: Li-enriched fungi, mycelial growth, Lithium compounds.
Highlights
Lithium is not an essential mineral for humans (Schrauzer, 2002), but studies have suggested that its uptake can influence human behavior (Dawson et al, 1970; Schrauzer and Shrestha, 1990; Severus et al, 2009)
In an effort to identify an alternative source of lithium, we investigated the effect of five lithium compounds on lag phase, growth rate and biomass of ten species of white-rot fungi
L. shimeji showed the highest increase in lag phase
Summary
Lithium is not an essential mineral for humans (Schrauzer, 2002), but studies have suggested that its uptake can influence human behavior (Dawson et al, 1970; Schrauzer and Shrestha, 1990; Severus et al, 2009). The main sources of lithium for human consumption are vegetables and grains (Schrauzer, 2002). Lithium level in mushrooms varies depending lithium availability and ability of fungi to accumulate lithium. In the environmental, this element has been found at average concentration of 0.189 ppm in mushrooms (Vetter, 2005). According to Vetter (2005) due to the low levels of lithium, the mushrooms are not suitable source of lithium for humans. Mushrooms can be enriched with lithium (de Assunção et al, 2012)
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