More Journal News
This sample newsfeed is taken from Leatherhead Food Research's FoodlineWeb Science database. Find out more about FoodlineWeb's Science, Market and News data.
If you are interested in a similar newsfeed on your site, either on mycotoxins or a wide range of other subjects, please contact Catherine Entwisle.
17 May 2012
Novel nanobiotechnological concepts in electrochemical biosensors for the analysis of toxins.
Biosensors used for the analysis of mycotoxins marine toxins and cyanobacterial toxins are described in this review with emphasis on electrochemical biosensors incorporating nanobiotechnological concepts. Recombinant enzymes recombinant antibody fragments and aptamers are considered together with the use of metallic nanoparticles carbon nanotubes and magnetic particles. The advantages of incorporating nanobiotechnological concepts in terms of improved specificity sensitivity and stability of the biosensors are discussed.
Ref: Analyst, 137 5 1055 1067, Campas M. Garibo D. Prieto Simon B., (Foodline ref: 840129)
Determining mycotoxins and mycotoxigenic fungi in food and feed.
The following topics are included in separate chapters methods for sampling sample preparation analysis and determination techniques; quality assurance and official methods for determining mycotoxins; biomarker development of human exposure for aflatoxins fumonisins and deoxynivalenol including mycotoxins presenting the greatest risk for farm animals; identification of mycotoxigenic fungi in food and feed together with new methods such as DNA barcoding of toxigenic fungi; and methods for mycotoxin analysis.
Ref: Acta Alimentaria, March 41 1 140 141, Csernus O., (Foodline ref: 840087)
Inhibitory effects of gossypol gossypolone and apogossypolone on a collection of economically important filamentous fungi.
Growth inhibition of filamentous fungi was found with racemic gossypol and its derivatives gossypolone and apogossypolone including inhibition of species of Aspergillus and Fusarium and of Penicillium corylophilum and Stachybotrys atra. Czapek agar medium was used to test the inhibitory activity of racemic gossypol apogossypolone and gossypolone. Inhibition of aflatoxin biosynthesis in Aspergillus flavus was found with gossypolone and the most potent aflatoxin inhibitor was apogossypolone; ochratoxin A production was inhibited by gossypol and apogossypolone in cultures of Aspergillus alliaceus.
Ref: Journal of Agricultural and Food Chemistry, March 14 60 10 2740 2745, Mellon J.E. Zelaya C.A. Dowd M.K. Beltz S.B. Klich M.A., (Foodline ref: 840009)
Comparison of slurry mixing and dry milling in laboratory sample preparation for determination of ochratoxin A and deoxynivalenol in wheat.
Sample preparation can affect the laboratory determination of mycotoxins such as ochratoxin A OTA and deoxynivalenol DON in cereals. The influence of water slurry mixing and dry milling procedures on the determination of OTA and DON in wheat was investigated. The distribution of OTA and DON in 10 kg samples of naturally contaminated wheat was determined. Sample preparation by slurry mixing was essential to obtain reliable laboratory samples for OTA determination in wheat and minimise misclassification.
Ref: Journal of AOAC International, March April 95 2 452 458, Lippolis V. Pascale M. Valenzano S. Visconti A., (Foodline ref: 839624)
Mycotoxins the threat within the supply chain.
Recent major recalls of well known US pet food brands have drawn attention to the risks associated with mycotoxins and how they can be reduced. This article discusses the effects of mycotoxins aflatoxins ochratoxins deoxynivalenol fusaric acid and zearalenone on dogs; the reasons that outbreaks can occur despite mycotoxins but not ochratoxin A deoxynivalenol T 2 toxin zearalenone and fumonisins being tightly regulated in the US sampling errors analytical errors storage of manufactured food and masked aflatoxins ; synergistic and additive interactions between mycotoxins; and the presence and management of mycotoxins in the supply chain.
Ref: Petfood Industry, February 54 2 38 41 0 ref. , Haladi S., (Foodline ref: 839222)
Toxigenic Alternaria species from Argentinean blueberries.
The mycobiota and their toxigenicity on blueberries grown in Argentina were examined in this study. Alternaria was the main microorganism and Phoma spp and Penicillium spp were also isolated. Species groups to which Alternaria belonged are listed. Toxigenic isolates were found and most produced alternariol alternariol methylether AME and tenuazonic acid. Isolates were classified according to the size of the lesion they produced on the fruit. The need for further studies to evaluate the health risk of Alternaria toxins in blueberries and blueberry products is highlighted.
Ref: International Journal of Food Microbiology, March 15 154 3 187 191, Greco M. Patriarca A. Terminiello L. Pinto V.F. Pose G., (Foodline ref: 838920)
Natural occurrence of aflatoxins and ochratoxin A in commercial dried chili.
Aflatoxin and ochratoxin A levels in chilli samples marketed in Malaysia were determined using HPLC with fluorescence detection. Limits of detection for aflatoxins B1 B2 G1 G2 and OTA are presented. Highest incidence was found for aflatoxin B1; 81.25 of chilli samples were contaminated with OTA. A higher level of mycotoxin contamination was found for chilli samples from open markets compared with those from supermarkets. The need for more precaution and hygienic controls to prevent mycotoxin contamination is highlighted.
Ref: Food Control, March April 24 1 2 160 164, Jalili M. Jinap S., (Foodline ref: 837987)
