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标题：RESEARCHES CONCERNING THE BIOCONVERSION FACTOR OF SOME MACROMYCETES FOR BIOMINERALS SPECIES
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作者：Gabriela Busuioc ; Claudia Stihi ; Carmen Elekes 等
期刊名称：Annals : Food Science and Technology
电子版ISSN：2065-2828
出版年度：2009
卷号：10
期号：1
出版社：Valahia University Press
摘要：In the frame of research project IDEI 624/2008 it were determinate the concentrations of biominerals in some macromycetes species harvested from Dambovita forestry ecosystems. This paper is about Pleurotus ostreatus, Coriolus versicolor, Stereum hirsutum, Phellinus tremulae, Pseudotrametes gibbosa and Pholiota destruens very common species in forestry ecosystems from south of Romania. Some of them are edible, some of them are not edible but not poisonous, and only one species contains toxic compounds. Were determinate their content in calcium, potassium, phosphorus and sulphur by EDXRF method with ELVA-X spectrometer with fluorescence. The accuracy and precision of results were evaluated by measuring a certified reference sample NIST SRM 1571-Orchard biological samples. The sensibility of method is 1ppm. Every result represents the average of minimum 3 and maximum 10 samples and was exprimated in percents. The bioconversion factor was calculated for each case by mathematics equation. Also it was determinate the pH of macromycetes substrates (soil or bark tree). So, the value of bioconversion factor was different from one macromycetes species to others and also with the biominerals species evaluated. The value of bioconversion factor for calcium was minimum 0,16 registered for Pleurotus ostreatus and maximum 1,33 at Pholiota destruens. For potassium accumulation the lowest value of bioconversion factor of 0,22 was calculated for Phellinus tremulae and the highest (9,0) for Coriolus versicolor. Concerning the bioconversion power for phosphorus, maximum level of 5,2 was in Coriolus versicolor and minimum of 0,5 in Pholiota destruens. In case of sulphur bioabsorbtion, bioconversion factor was maximum in Phellinus tremulae (20) and minimum was obtained in Coriolus versicolor (0,2). Our researches put in evidence the possibility of using one or other of macromycetes species analysed as natural source for obtaining organic biominerals necessary for pharmaceutical or food industry biotechnologies. For example, on can use Coriolus versicolor as natural source for potassium and also as phosphorous source
关键词：bioconversion factor; biominerals; macromycetes species