TY  - JOUR
AU  - Petrović, Predrag
AU  - Vunduk, Jovana
AU  - Klaus, Anita
AU  - Carević, Momir
AU  - Petković, Miloš
AU  - Vuković, N.
AU  - Cvetković, A.
AU  - Žižak, Željko
AU  - Bugarski, Branko
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4218
AB  - Methanol extracts of mosaic puffball (Handkea utriformis, Bovistella utriformis, Lycoperdon utriforme, Calvatia utriformis - current name is a subject of debate), from three different stages - mycelium (HUMIC), immature (HUI) and mature fruiting bodies (HUM) were characterized and tested for antioxidant, antimicrobial and inhibitory activity on tyrosinase, acetyholinesterase (AChE), butyrylcholinesterase (BuChE) and 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMG-CoA-R). Immature, edible, fruiting bodies were shown to be a good source of antioxidants (11.5 mg/g of extract) and cholesterol-lowering agent, lovastatin (234 mu g/g of extract), and exhibited significant antimicrobial activity. In addition, HUI showed good and selective AChE (4.48 mg/mL) and non-lovastatin related HMG-CoA-R inhibition (1.16 mg/mL), which all together suggests that regular consumption of it may have health benefits. Mature fruiting bodies, inedible due to powdery consistence, have been used in traditional medicine for wound treatment; their extract was relatively rich in free ergosterol (31.65 mg/g of extract), N-acetylglucosamine (24 mg/g of extract), alpha-tocopherol (4 mg/g of extract) and had best overall antioxidant activity, which was in correlation with its highest phenolic content (19.4 mg GAE/mL). It also exhibited significant tyrosinase inhibitory activity (0.22 mg/mL) and thus could be used in medicinal and cosmetic products for wound healing and bleaching. Mycelium, which can be easily grown in laboratory conditions did not have the same properties as, neither immature or mature fruiting bodies, although it showed prominent antimicrobial activity, notably against Pseudomonas aeruginosa (MIC = 0.0625 mg/mL) and could be a source of antimicrobial compounds.
PB  - Elsevier Science Bv, Amsterdam
T2  - South African Journal of Botany
T1  - From mycelium to spores: A whole circle of biological potency of mosaic puffball
EP  - 160
SP  - 152
VL  - 123
DO  - 10.1016/j.sajb.2019.03.016
ER  - 

@article{
author = "Petrović, Predrag and Vunduk, Jovana and Klaus, Anita and Carević, Momir and Petković, Miloš and Vuković, N. and Cvetković, A. and Žižak, Željko and Bugarski, Branko",
year = "2019",
abstract = "Methanol extracts of mosaic puffball (Handkea utriformis, Bovistella utriformis, Lycoperdon utriforme, Calvatia utriformis - current name is a subject of debate), from three different stages - mycelium (HUMIC), immature (HUI) and mature fruiting bodies (HUM) were characterized and tested for antioxidant, antimicrobial and inhibitory activity on tyrosinase, acetyholinesterase (AChE), butyrylcholinesterase (BuChE) and 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMG-CoA-R). Immature, edible, fruiting bodies were shown to be a good source of antioxidants (11.5 mg/g of extract) and cholesterol-lowering agent, lovastatin (234 mu g/g of extract), and exhibited significant antimicrobial activity. In addition, HUI showed good and selective AChE (4.48 mg/mL) and non-lovastatin related HMG-CoA-R inhibition (1.16 mg/mL), which all together suggests that regular consumption of it may have health benefits. Mature fruiting bodies, inedible due to powdery consistence, have been used in traditional medicine for wound treatment; their extract was relatively rich in free ergosterol (31.65 mg/g of extract), N-acetylglucosamine (24 mg/g of extract), alpha-tocopherol (4 mg/g of extract) and had best overall antioxidant activity, which was in correlation with its highest phenolic content (19.4 mg GAE/mL). It also exhibited significant tyrosinase inhibitory activity (0.22 mg/mL) and thus could be used in medicinal and cosmetic products for wound healing and bleaching. Mycelium, which can be easily grown in laboratory conditions did not have the same properties as, neither immature or mature fruiting bodies, although it showed prominent antimicrobial activity, notably against Pseudomonas aeruginosa (MIC = 0.0625 mg/mL) and could be a source of antimicrobial compounds.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "South African Journal of Botany",
title = "From mycelium to spores: A whole circle of biological potency of mosaic puffball",
pages = "160-152",
volume = "123",
doi = "10.1016/j.sajb.2019.03.016"
}

Petrović, P., Vunduk, J., Klaus, A., Carević, M., Petković, M., Vuković, N., Cvetković, A., Žižak, Ž.,& Bugarski, B.. (2019). From mycelium to spores: A whole circle of biological potency of mosaic puffball. in South African Journal of Botany
Elsevier Science Bv, Amsterdam., 123, 152-160.
https://doi.org/10.1016/j.sajb.2019.03.016

Petrović P, Vunduk J, Klaus A, Carević M, Petković M, Vuković N, Cvetković A, Žižak Ž, Bugarski B. From mycelium to spores: A whole circle of biological potency of mosaic puffball. in South African Journal of Botany. 2019;123:152-160.
doi:10.1016/j.sajb.2019.03.016 .

Petrović, Predrag, Vunduk, Jovana, Klaus, Anita, Carević, Momir, Petković, Miloš, Vuković, N., Cvetković, A., Žižak, Željko, Bugarski, Branko, "From mycelium to spores: A whole circle of biological potency of mosaic puffball" in South African Journal of Botany, 123 (2019):152-160,
https://doi.org/10.1016/j.sajb.2019.03.016 . .

TY  - JOUR
AU  - Dimitrijević, Stevan
AU  - Anđić, Zoran
AU  - Kamberović, Željko
AU  - Dimitrijević, Silvana
AU  - Vuković, N.
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2553
AB  - The paper presents an improved process for recycling of silver-plate brass housing. Silver and copper are recovered with a purity of 99.99 % and 99.90 %, respectively, with the aim of obtaining materials of higher value using additional procedures based on the same process and equipment. The novel approach with subsequent electrorefining yields copper of 99.99 % purity with BS EN 1978:1998 (Cu-CATH-1) quality and is referred to as LME grade A. Additional processing of silver results in superfine, micro-sized Ag powder with partie size from 0.14 to 1.13 mu m and purity of 99.999 %. Copper electrorefining tests were performed using 1.50 dm(3) of synthetic electrolyte in a 2 dm(3) electrolytic cell. Effects of current density and electrolyte composition were investigated. Optimal current density for the first and second refining was 120 A/m(2) and 200 A/m(2), respectively. Additional refining of silver was performed by chemical reduction from an aqueous solution. Optimal results were obtained with ascorbic acid as a reduction agent in concentration of 0.1 mol/dm(3) and polyvinylpyrrolidon as a protective agent in concentration of 2 % by mass. The investigation results could be adopted into production.
T2  - Bulgarian Chemical Communications
T1  - Recycling of silver-plated brass for production of high purity copper and ultrafine silver powder for electric contacts
EP  - 824
IS  - 4
SP  - 814
VL  - 46
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2553
ER  - 

@article{
author = "Dimitrijević, Stevan and Anđić, Zoran and Kamberović, Željko and Dimitrijević, Silvana and Vuković, N.",
year = "2014",
abstract = "The paper presents an improved process for recycling of silver-plate brass housing. Silver and copper are recovered with a purity of 99.99 % and 99.90 %, respectively, with the aim of obtaining materials of higher value using additional procedures based on the same process and equipment. The novel approach with subsequent electrorefining yields copper of 99.99 % purity with BS EN 1978:1998 (Cu-CATH-1) quality and is referred to as LME grade A. Additional processing of silver results in superfine, micro-sized Ag powder with partie size from 0.14 to 1.13 mu m and purity of 99.999 %. Copper electrorefining tests were performed using 1.50 dm(3) of synthetic electrolyte in a 2 dm(3) electrolytic cell. Effects of current density and electrolyte composition were investigated. Optimal current density for the first and second refining was 120 A/m(2) and 200 A/m(2), respectively. Additional refining of silver was performed by chemical reduction from an aqueous solution. Optimal results were obtained with ascorbic acid as a reduction agent in concentration of 0.1 mol/dm(3) and polyvinylpyrrolidon as a protective agent in concentration of 2 % by mass. The investigation results could be adopted into production.",
journal = "Bulgarian Chemical Communications",
title = "Recycling of silver-plated brass for production of high purity copper and ultrafine silver powder for electric contacts",
pages = "824-814",
number = "4",
volume = "46",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2553"
}

Dimitrijević, S., Anđić, Z., Kamberović, Ž., Dimitrijević, S.,& Vuković, N.. (2014). Recycling of silver-plated brass for production of high purity copper and ultrafine silver powder for electric contacts. in Bulgarian Chemical Communications, 46(4), 814-824.
https://hdl.handle.net/21.15107/rcub_technorep_2553

Dimitrijević S, Anđić Z, Kamberović Ž, Dimitrijević S, Vuković N. Recycling of silver-plated brass for production of high purity copper and ultrafine silver powder for electric contacts. in Bulgarian Chemical Communications. 2014;46(4):814-824.
https://hdl.handle.net/21.15107/rcub_technorep_2553 .

Dimitrijević, Stevan, Anđić, Zoran, Kamberović, Željko, Dimitrijević, Silvana, Vuković, N., "Recycling of silver-plated brass for production of high purity copper and ultrafine silver powder for electric contacts" in Bulgarian Chemical Communications, 46, no. 4 (2014):814-824,
https://hdl.handle.net/21.15107/rcub_technorep_2553 .