Cadmium determination in Lentinus edodes mushroom species

Vera Akiko  MAIHARA; Patricia  Landim da Costa MOURA; Marília Gabriela Miranda  CATHARINO; Edson  Gonçalves MOREIRA; Lilian  Pavanelli CASTRO; Rubens Cesar  Lopes FIGUEIRA

Cadmium determination in Lentinus edodes mushroom species

Autores

Vera Akiko MAIHARA

Patricia Landim da Costa MOURA

Marília Gabriela Miranda CATHARINO

Edson Gonçalves MOREIRA

Lilian Pavanelli CASTRO

Rubens Cesar Lopes FIGUEIRA

Editor

Sociedade Brasileira de Ciência e Tecnologia de Alimentos

Descripción

Many studies have drawn attention to the occurrence and concentration of toxic elements found in the fruiting body of mushrooms. Some edible mushroom species are known to accumulate high levels of inorganic contaminants, mainly cadmium, mercury, and lead. There are about 2,000 known edible mushroom species, but only 25 of them are cultivated and used as food. In Brazil, the most marketed and consumed mushroom species are Agaricus bisporus , known as Paris champignon, Lentinus edodes , or Shitake and Pleurotus sp , also called Shimeji or Hiratake. In this study, the concentration of cadmium was determined in Lentinus edodes mushrooms from different cities in São Paulo state and some samples imported from Japan and China. The analyses were performed by graphite furnace atomic absorption spectrometry after HNO 3 -H 2 O 2 digestion. The results showed a lower concentration of Cd in the mushrooms cultivated in São Paulo (0.0079 to 0.023 mg.kg –1 in natura) than that of the mushrooms cultivated abroad (0.125 to 0.212 mg.kg –1 in natura). Although there is no tolerance limit for Cd in mushrooms in Brazil, the results show that Lentinus edodes mushrooms can be safely consumed.