Suchergebnisse

Bioethanol is a biofuel that is mostly used as a replacement for fossil fuels worldwide with yearly production reaching nearly 110 billion liters in 2019. Trends of producing this alternative fuel are rising and maize is considered as one of the best renewable raw materials for the production of fuel ethanol due to the high content of starch in the grain. Taking into account that Serbia is one of the most prominent maize producers in Europe, the surpluses of this crop could be directed toward bioethanol production. Even though there is no organized production and consumption of bioethanol as an automotive fuel in Serbia, the Serbian Government has recently introduced some new regulations regarding biofuels. However, due to the reduction of economic activities since the onset of the COVID-19 pandemic in 2020, the global demand for crude oil has fallen sharply, negatively affecting the gasoline demand, and thus bioethanol, which makes the future of this alternative fuel production notably uncertain. ; Bioetanol je biogorivo koje se uglavnom koristi kao zamena za fosilna goriva širom sveta, a godišnja proizvodnja dostigla je gotovo 110 milijardi litara u 2019. godini. Trendovi proizvodnje ovog alternativnog goriva rastu, a kukuruz se smatra jednom od najboljih obnovljivih sirovina za proizvodnju bioetanola zahvaljujući visokom sadržaju skroba u zrnu. Uzimajući u obzir da je Srbija jedan od najistaknutijih proizvođača kukuruza u Evropi, viškovi useva ove poljoprivredne kulture mogli bi se usmeriti ka proizvodnji bioetanola. Iako u Srbiji ne postoji organizovana proizvodnja i potrošnja bioetanola kao transportnog goriva, Vlada Republike Srbije nedavno je usvojila nekoliko novih uredbi u vezi sa stavljanjem u promet, obeležavanjem i potrošnjom biogoriva. Međutim, zbog smanjenja ekonomskih aktivnosti od početka pandemije virusa COVID-19 tokom 2020. godine, globalna potražnja za sirovom naftom naglo je opala, što je negativno uticalo na potražnju za benzinom, a time i za bioetanolom, zbog čega je budućnost proizvodnje ovog alternativnog goriva za sada u velikoj meri neizvesna.

The objective of the present study was to investigate the susceptibility of maize hybrids to the natural mycotoxins contamination: aflatoxin total (AFLA), deoxynivalenol (DON), zearalenon (ZEA) and fumonisins (FB). Hybrids were grown during two production years (2019 and 2020) in two locations. Mycotoxin contamination of maize grains was evaluated in five sweet maize hybrids. Contamination level of investigated hybrids of first cluster was mainly by below average values of ZEA (all equal to zero) and DON. Hybrids PK4 (S) 2020, PK6 (MS) 2020 and PK4 (MS) 2020 had below average values for AFLA, while remaining treatments of this cluster have mostly elevated values of this mycotoxin. Contamination level of investigated hybrids of second cluster mostly had increased values of mycotoxins ZEA and DON and below average values of AFLA. Samples did not contain fumonisins. Mycotoxin contamination were significantly affected by hybrids and years. We have established that DON and ZEA levels were influenced by the environmental conditions. There were no significant effects of location on the level of AFLA in the sweet maize hybrids. The variation in the properties of mycotoxin content (DON) was significantly influenced by hybrids, and there was no significance of hybrids x location interaction. Differences were more expressed for the content of ZEA and AFLA compared to the content of DON. Hybrid PK1 had the lowest content of DON, while it had the highest content of ZEA. Mycotoxin analyses showed that in all tested hybrids, levels of AFLA, DON, ZEA and FBs were below the maximum permissible levels stipulated by the legislation of the European Union and the Republic of Serbia in maize intended for direct human consumption. These results confirmed that the susceptibility of hybrids is one of the important risks, in addition to climatic factors, for the appearance of toxigenic fungi and their mycotoxins. Genotype tolerance is very important as a preventive measure, which indicates that breeders have to pay attention to it in ...