scholarly journals BIO- AND TOXIC ELEMENTS IN EDIBLE WILD MUSHROOMS (SUILLUS LUTEUS)

2018 ◽  
Vol 6 (3) ◽  
pp. 263-269 ◽  
Author(s):  
Penko Papazov
Keyword(s):  
Toxic Elements ◽  
Graphite Furnace ◽  
Dry Weight ◽  
Weight Basis ◽  
Average Content ◽  
Wild Edible Mushrooms ◽  
Wild Mushrooms ◽  
Suillus Luteus ◽  
Graphite Furnace Aas ◽  
Edible Wild Mushrooms

The aim of this study was to perform analysis by flame and graphite furnace AAS the content of Pb, Cd, Ni, Cr, Mn, Co, Cu, Zn and Fe in wild edible mushrooms Suillus luteus. The samples were collected from the Batak Mountain. All metals concentrations were determined on a dry weight basis. The average content of studied elements: Pb, Cd, Ni, Cr, Mn, Co, Cu, Zn and Fe in Suillus luteus samples were: 0.66 mg kg-1, 0.52 mg kg-1, 0.55 mg kg-1, 0.51 mg kg-1, 11.33 mg kg-1, 0.98 mg kg-1, 19.28 mg kg-1, 51.67 mg kg-1, and 114.41 mg kg-1.

scholarly journals Lead and cadmium in conventional and organic carrots

2020 ◽  
Vol 79 (OCE2) ◽  
Author(s):  
Elżbieta Tońska ◽  
Joanna Klepacka ◽  
Joanna Michalak ◽  
Michał Toński
Keyword(s):  
Toxic Elements ◽  
Graphite Furnace ◽  
Agricultural Waste ◽  
Organic Food ◽  
Toxic Substances ◽  
Average Content ◽  
Lead And Cadmium ◽  
Cadmium And Lead ◽  
Cultivation Site ◽  
Zeeman Background Correction

AbstractToxic elements like lead and cadmium are considered harmful to human health. These elements do not have any useful function in an organism. They are known only for their negative actions, which can be tolerated by human body only in certain limits. Carrots may absorb these toxic elements from the soil they grow in. The presence of the contaminants depends mainly on the mode and site of cultivation, fertilizer, industrial infrastructure, level of transportation and roads around cultivation site or occurrence of municipal and agricultural waste nearby. The organic food is supposed to be healthier due to, among other things, less content of toxic substances, which results from more sustainable farming. The aim of this research was to determine the content of lead and cadmium in carrots from conventional and organic farming that were available on polish market.The research had been conducted for two years. Both kinds of carrots had been purchased at the same time in different supermarkets in Poland. Altogether, 36 packages, both conventional and organic carrots, were collected. The samples of carrots were dried and then reduced to ashes in 480 °C within few hours. Then the residues were dissolved in 1 M nitric acid and quantitatively transferred to measuring flasks, complemented with deionised water. The content of cadmium and lead was determined by application of electrothermal atomizer (graphite furnace) in iCE 3000 (Thermo Scientific, USA) spectrometer using adequate cathode lamps and Zeeman background correction. Wavelengths for analysis of lead and cadmium were 217 nm and 288.8 nm respectively.The results show that there are statistically significant differences in the average content of lead and cadmium in conventional and organic carrots. The concentrations of lead in conventional and organic carrots were 0.0192 mg kg-1 and 0.0118 mg kg-1 respectively. The concentrations of cadmium in conventional and organic carrots were 0.0050 mg kg-1 and 0.0023 mg kg-1 respectively.The research indicates that toxic elements like Pb and Cd are present in both types of carrots, but their amount is lower than permissible concentrations established by EU ordinance. The conducted experiments also showed that the content of Pb and Cd in organic carrots is lower than in the conventional ones. This may be resulted in the differences in farming.

scholarly journals Phytochemicals in Edible Wild Mushrooms From Selected Areas in Kenya

2013 ◽  
Vol 2 (3) ◽  
pp. 137 ◽  
Author(s):  
T. W. Wandati ◽  
G. M. Kenji ◽  
J. M. Onguso
Keyword(s):  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Dry Weight ◽  
Edible Mushroom ◽  
Scavenging Activity ◽  
Wild Mushrooms ◽  
Total Polyphenols ◽  
Health Promoting ◽  
Phytochemical Compounds ◽  
Edible Wild Mushrooms

<p>Mushrooms have been used as food for centuries all over the world because of their characteristic soft texture and mild flavor. They are documented as being good source of nutrients and bioactive compounds that are beneficial to the human body (Chang, 2011). While the exotic varieties have been extensively analyzed, local edible wild mushrooms have not and yet they are consumed by communities living near the forests. This research aimed at screening and determination of phytochemicals compounds in wild edible mushroom found in selected areas in Kenya Two commercially grown mushrooms, oyster (<em>Pleurotus florida</em>) and button (<em>Agaricus bisporus</em>), and ten edible wild mushrooms species were collected from different locations of the country. They were analyzed for total polyphenols, flavonoids and radical scavenging activity using standard methods. All the analysis was done in triplicate. Phytochemical screening showed presence of saponins, polyphenols and terpenoids. Total polyphenols values obtained ranged between 210-1614 mg Gallic Acid equivalent (GAE)/100g, dry weight basis (dwb) and flavonoids 214-1695 mg Quercetin Equivalent (QE)/100 g dwb. Total polyphenols (R<sup>2</sup> = 0.82, P ? 0.05) and flavonoids values showed a positive correlation with the radical scavenging activity.</p> The results show that cultivated and wild edible mushrooms are rich in health-promoting phytochemical compounds.

Bioactive Constituents of the edible wild mushrooms Gomphus clavatus and Lactarius salmonicolor

Planta Medica ◽  
2007 ◽  
Vol 73 (09) ◽  
Author(s):  
M Makropoulou ◽  
G Athanasakis ◽  
N Aligiannis ◽  
N Fokialakis ◽  
Z Gonou ◽  
...  
Keyword(s):  
Wild Mushrooms ◽  
Bioactive Constituents ◽  
Edible Wild Mushrooms

ERRORS ASSOCIATED WITH HERBAGE DISSECTION ANALYSES 2. Problems of species identification

1976 ◽  
pp. 213-225
Author(s):  
I.M. Ritchie ◽  
C.C. Boswell ◽  
A.M. Badland
Keyword(s):  
New Zealand ◽  
Dry Weight ◽  
Analytical Tool ◽  
Species Level ◽  
Weight Basis ◽  
Plant Identification ◽  
Leaf Fragment ◽  
Research Division ◽  
Or Groups ◽  
Botanical Analysis

HERBACE DISSECTION is the process in which samples of herbage cut from trials are separated by hand into component species. Heavy reliance is placed on herbage dissection as an analytical tool ,in New Zealand, and in the four botanical analysis laboratories in the Research Division of the Ministry of Agriculture and Fisheries about 20 000 samples are analysed each year. In the laboratory a representative subsample is taken by a rigorous quartering procedure until approximately 400 pieces of herbage remain. Each leaf fragment is then identified to species level or groups of these as appropriate. The fractions are then dried and the composition calculated on a percentage dry weight basis. The accuracy of the analyses of these laboratories has been monitored by a system of interchanging herbage dissection samples between them. From this, the need to separate subsampling errors from problems of plant identification was, appreciated and some of this work is described here.

Comparative Study of Antioxidant Activities and Total Phenolic Content of Selected Edible Wild Mushrooms

2011 ◽  
Vol 13 (3) ◽  
pp. 245-255 ◽  
Author(s):  
Hip Seng Yim ◽  
Fook Yee Chye ◽  
Mee Yee Lee ◽  
Patricia Matanjun ◽  
Siew Eng How ◽  
...  
Keyword(s):  
Comparative Study ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Antioxidant Activities ◽  
Total Phenolic ◽  
Wild Mushrooms ◽  
Edible Wild Mushrooms

Polycyclic Aromatic Hydrocarbons (PAHs) in Sediments of the Brisbane River (Australia) – Preliminary Results

1989 ◽  
Vol 21 (2) ◽  
pp. 161-165 ◽  
Author(s):  
S. I. Kayal ◽  
D. W. Connell
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
River Estuary ◽  
Dry Weight ◽  
Weight Basis ◽  
Sediment Samples ◽  
Preliminary Results ◽  
Treated Sewage ◽  
Polycyclic Aromatic ◽  
Petroleum Refineries

Results of the analysis of twenty-three composite sediment samples revealed that PAHs are widely distributed in the Brisbane River estuary. Mean concentrations for individual compounds, on a dry weight basis, ranged from 0.03 µg/g for dibenz [ah] anthracene to 2.34 µg/g for fluoranthene. Observed PAH assemblages were rich in compounds having pyrolytic origins. However, the presence of petroleum derived compounds was indicative of the importance of petroleum as a PAH source in the estuary. Petroleum refineries, a coal loading terminal and a major treated sewage outfall located at the mouth were not indicated as major contributing sources of PAH pollution in the estuary.

Mineral nutrition, dinitrogen fixation, and growth of Alnuscrispa and Alnusglutinosa

1985 ◽  
Vol 15 (5) ◽  
pp. 855-861 ◽  
Author(s):  
G. Prégent ◽  
C. Camiré
Keyword(s):  
Mineral Nutrition ◽  
Dry Weight ◽  
Optimal Growth ◽  
Maximum Growth ◽  
Dinitrogen Fixation ◽  
Weight Basis ◽  
Critical Levels ◽  
N Status

Invitro cultures of Alnuscrispa (Ait.) Pursh and Alnusglutinosa (L.) Gaertn. were used to estimate critical foliage levels of selected nutrients for optimal growth and dinitrogen (N2) fixation. For A. crispa to obtain 90% of maximum growth and N2 fixation, foliar levels of 0.12% P, 0.13% Mg, <0.31% K, and <0.04% Ca on a dry weight basis were needed. For A. glutinosa, the critical levels were 0.138% P, 0.10% Mg, 0.29% Ca, and ~0.20% K. From all the deficiencies observed, P had the more pronounced effects on N status of both species.

Suspected Myotoxicity of Edible Wild Mushrooms

2006 ◽  
Vol 231 (2) ◽  
pp. 221-228 ◽  
Author(s):  
Petteri Nieminen ◽  
Markku Kirsi ◽  
Anne-Mari Mustonen
Keyword(s):  
Wild Mushrooms ◽  
Edible Wild Mushrooms
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