RT Journal
T1 SEASONAL AND GEOGRAPHICAL ANALYSIS OF AFLATOXINS IN DIFFERENT VARIETIES OF PAKISTANI BROWN RICE
A1 Muhammad Kashif
A1 Muhammad Riaz
A1 Saeed Akhtar
A1 Khurram Muaz
A1 Habibullah Nadeem
A1 Shinawar Waseem Ali
A1 Amir Ismail
JF Journal of Animal and Plant Sciences
JO JAPS
SN 1018-7081
VO 34
IS 2
SP 465
OP 475
YR 2024
FD 2024/03/31
DO DOI https://doi.org/10.36899/JAPS.2024.2.0732
AB <p>Aflatoxins are highly toxic, carcinogenic compounds, widely prevalent worldwide, secreted by various fungal strains especially from genus <em>Aspergillus</em> including <em>Aspergillus parasiticus</em> and <em>Aspergillus flavus. </em>Brown rice having more than 17% moisture contents is considered as favorable substrates for fungal growth causing aflatoxins production. The objective of current study was to examine seasonal and geographical impact on production of aflatoxins including aflatoxin B<sub>1</sub> (AFB<sub>1</sub>), aflatoxin B<sub>2</sub> (AFB<sub>2</sub>), aflatoxin G<sub>1</sub> (AFG<sub>1</sub>) and aflatoxin G<sub>2 </sub>(AFG<sub>2</sub>) in different brown rice varieties procured from various regions of Punjab and Sindh. High Performance Liquid Chromatography (HPLC) equipped with fluorescence detector was used to detect aflatoxins in samples including Super Kernel Basmati Rice, Kainat, Supri, Super Sindh, IRRI-6 and IRRI-9 hybrid. Among aflatoxins, AFB<sub>1</sub> was the most common toxin detected in several varieties of Pakistani brown rice especially in Super Kernel Basmati Rice and in Super Sindh. Total 202 (50.5%) out of 400 samples were contaminated with aflatoxins out of which 135 samples (33.75%) had AFB<sub>1</sub> level exceeding permissible limit (2 &micro;g/kg). In addition, 125 (31.25%) samples had higher total aflatoxins contents than allowable limit (4 &micro;g/kg). AFG<sub>1</sub> and AFG<sub>2</sub> in present study were not detected. Aflatoxins concentrations in brown rice varieties collected from Punjab were higher than those collected from Sindh province. The seasonal comparison for aflatoxins concentrations in brown rice showed higher aflatoxins levels in the samples collected during the month of March than those procured in other months (November, January and May). Furthermore, a strong correlation between moisture contents and aflatoxins was also observed. The results indicated that aflatoxins contents in various Pakistani brown rice varieties cannot be ignored and further research is needed to establish storage conditions which ensure prevention of fungal growth.</p>
K1 Aflatoxins, Brown rice, Seasonal variation, Punjab, Pakistan
PB Pakistan Agricultural Scientists Forum
LK https://thejaps.org.pk/AbstractView.aspx?mid=2022-JAPS-637