Naslov
Color sorting as a quick and cheap mycotoxin reduction method in the rye

Autori
Šarkanj, Bojan ; Frece, Jadranka ; Ježek, Damir ; Dodlek Šarkanj, Ivana ; Milković, Marin

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of abstracts of 2 nd International Conference on Agriculture, Food anf Aqua and 15 th Annual Conference on Crop Science and Agriculture / Bieber, Rick - : Conference Series-Asia Pacific & Middle East, 2019, 28-28

Skup
2nd International Conference on Agriculture, Food and Aqua ; 15th Annual Conference on Crop Science and Agriculture

Mjesto i datum
Bali, Indonezija, 18.11.2019. - 19.11.2019

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
mycotoxins ; color sorting ; rye ; Claviceps purpurea ; ergot alkaloids

Sažetak
Mycotoxins are ubiquitous toxic secondary metabolites of filamentous fungi. They are unavoidable contaminants that are heavily dependant on the weather conditions. To be able to reduce the exposure to the mycotoxins usually, post-harvesting mycotoxin reduction techniques are used. One of such techniques is colour sorting. Accept the mycotoxins fungi are also producing the pigments as secondary metabolites, whose biosynthesis is triggered by the same molecular mechanisms due to proximity on the gene. The exact colour changes are connected to the mycotoxin-producing fungi. The Fusarium spp. is producing the red pigment rubrofusarin, and the yellow aurofusarin. The Aspergillus spp. are producing yellow Asperversin, and Neoaspergillic acid, or brown pigments. The Penicillium spp. are producing yellow Anthraquinone, or orange Purpurogenone. The one more significant mycotoxin producer with visible changes on the colour is Claviceps purpurea, the producer of ergot alkaloids. They are producing cereal like ergot sclerotia that are dark violet to black in colour. The change in colour is the main basis for the automated colour sorting and reduction of mycotoxin contamination. Laboratory colour sorting machine “Labseed” was used for colour sorting the infected seeds, and up to 95% of the mycotoxin concentration was reduced. The highest reduction was achieved with Ergot alkaloids, while method was least effective for reduction of ochratoxin A (68% reduction).

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Prehrambena tehnologija, Nutricionizam

POVEZANOST RADA