Study On Mycotoxin Contamination For Egyptian Rice During Post Harvest Processing

Abstract

This study aimed to introduce a survey and assessment of contaminants of mycotoxins (aflatoxin) in the Egyptian rice through the stages of preparation after the harvest and until reaching to the consumer. The rice samples were collected from (Dakahleya, Kafr El-Sheikh, and ElSharka), stored rice in flat. Samples divided, graded and kept in cloth bags and stored for nine months period at ambient environmental conditions. Results of the study dealt with chemical properties of hulled rice before storing, moisture content, Ash percentage, nitrogen free extract (NFE%) percentage, physical properties of hulled rice, weight per 1000 kernels (gm), hardness (%), color of hulled rice, Microbial properties of rice after different storing periods, total count of fungi for hulled rice of different governorates subject of the study, Aflatoxin in storage periods for hulled rice. Results of chemical properties indicated that increase of moisture content in ElSharka rice compared with others and protein percent was higher in Kafr El-Sheikh compared to Dakahleya or ElSharka rice. Physical properties of hulled rice showed that, the quality of rice with storage days was the best for Dakahleya rice compared with other rice after 180 days. Microbial properties showed that, Fungus count as Log(Cfu/g) for the hulled rice after 180 days for the highest value for Kafr El-Sheikh is 3.24, the second rank recorded for Dakahia governorate 3.12 while the lowest value was in Sharkia governorate (1.5). It is noticed that aflatoxin showed after180 from storage days and increased at 270 day from storage rice and was higher in Sharkia followed by Dakahia rice then Kafr El-Sheikh rice