MYCOTOXIN PRODUCTION
; CLIMATE-CHANGE
; A PRODUCTION
; FOOD SAFETY
; GROWTH
; CARBONARIUS
; FUNGI
; GREEN
; OCHRACEUS
; CONTAMINATION
WOS学科分类:
Food Science & Technology
WOS研究方向:
Food Science & Technology
英文摘要:
This study investigated the influence of temperature and water activity (a(w)) on the growth and biosynthesis of Ochratoxin A (OTA) by Aspergillus carbonarius and Aspergilhis ochraceus, and the influence of climate change on the production potential of this mycotoxin in coffee was predicted. Central Composite Rotatable Design with a(w) ranging from 0.91 to 0.99 and temperatures from 17 to 38 degrees C was used. A. carbonarius CCDCA 10288 and 10293 showed optimal growth in a, intervals from 0.935 to 0.965 and temperatures between 25 and 32 degrees C while A. ochraceus CCDCA 10211 and 10212 showed a, intervals from 0.940 to 0.990 and temperatures between 21 and 30 degrees C. The conditions under which strains show the highest OTA risk index are as follows: for A. carbonarius CCDCA 10288 and 10293, a(w) between 0.95 and 0.99 and temperatures between 22 and 32 degrees C, for A. ochraceus CCDCA 10211 a(w) between 0.97 and 0.99 and temperatures between 25 and 30 degrees C. Using the models obtained, it was possible to verify that the conditions become more favorable for OTA production in the harvest months due to increased temperatures in the southern region of Minas Gerais. A safe product can be ensured by following good practices.
1.Univ Fed Lavras, Food Sci Dept, POB 3037, BR-37200000 Lavras, MG, Brazil 2.Univ Fed Lavras, Biol Dept, POB 3037, BR-37200000 Lavras, MG, Brazil 3.Univ Fed Lavras, Chem Dept, POB 3037, BR-37200000 Lavras, MG, Brazil
Recommended Citation:
Oliveira, Gislaine,Evangelista, Suzana Reis,Franca Passamani, Fabiana Reinis,et al. Influence of temperature and water activity on Ochratoxin A production by Aspergillus strain in coffee south of Minas Gerais/Brazil[J]. LWT-FOOD SCIENCE AND TECHNOLOGY,2019-01-01,102:1-7