الفهرس 
List of publicationsOnly 14 pages are availabe for public view
 |  | from | 144 |  |  |
| | | from | 144 | | |
Abstract
Β-N-Methylamino-L-alanine (BMAA) is a neurotoxic non-protein
amino acid, which causes neurodegenerative diseases. While the
presence of BMAA toxin in phytoplankton communities and its
bioaccumulation in aquatic food animals has been demonstrated
worldwide, the detection of this toxin has not yet been explored in
Egyptian freshwaters. Therefore, this study demonstrated the presence of
the neurotoxin β-N-methylamino-L-alanine (BMAA) and its
cyanobacterial producers in fishpond and irrigation waters in Sohag
governorate, Egypt. The study also investigated the possible
accumulation of BMAA toxin in edible muscles of tilapia fish as well as
in commonly consumed vegetable and cereal plants from Egyptian
farmlands. The results revealed that phytoplankton samples contained
higher concentrations of free BMAA (0.6-11.4μg L-1
) than protein-bound
form (0.01-3.3μg L-1
), in association with the abundance of dominant
cyanobacteria in fishpond and irrigation water sites. BMAA was detected
in edible fish muscles at higher levels of free form (65.1µg g-1
fresh
weight) than protein-bound form (8.14µg g-1
fresh weight). Conversely.