Naslov
Biosynthesis and biodegradation of aflatoxins on green coffee beans contaminated with aflatoxigenous mould

Autori
Duraković, Senadin ; Delaš, Frane ; Markov, Ksenija ; Duraković, Lejla

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

Izvornik
Proceedings of the 8th Croatian Biological Congress with International Participation, Zagreb, September 27-October 2, 2003. / Mitrikeski, Petar T. - Zagreb : Hrvatsko biološko društvo, 2003, 380-380

Skup
8th Croatian Biological Congress with International Participation

Mjesto i datum
Zagreb, Hrvatska, 27.09.2003. - 02.10.2003

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Coffee beans; aflatoxins; chitin; biosynthesis

Sažetak
The influence of selected cultivation parameters on the growth of the aflatoxigenous mould Aspergillus flavus ATCC 26949 and the biosynthesis of aflatoxin B1 and G1(AFB1 and AFG1)was investigated.Green coffee beans-regular and decaffeinated-served as substrate.Experiments were carried out in stationary culture, at temperatures from 20-40oC and water content in the substrate from 15-40%.The amount of biomass was estimated by measuring the chitin content, and the aflatoxin concentration by means of a fluorodensitometer.It was found that caffeine inhibits the synthesis of both investigated toxins whereas it had practically no influence on biomass growth.After 28 days of cultivation at 30oC the concentration of AFB1 was reduced by 15-22%, and at 40oC by 18-28%, relatively to the highest values obtained in the course of biosynthesis.Under the same growth conditions the concentration of AFG1 was reduced by 12-25% at 30oC, and by 20-35% at 40oC.

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija

POVEZANOST RADA