Determination of lead and Cadmium Contents in (oryza sativa) rice samples of agricultural areas in Gillan- Iran
Journal Title: International Journal of Farming and Allied Sciences - Year 2013, Vol 2, Issue 11
Abstract
The major source of Cadmium intake for rice eating countries in Asian countries like Iran is rice. Due to the accumulation of heavy metal compounds formed in plants for food could be an important factor in human toxicity; we have been investigating the Cadmium and Lead contents in rice as the high daily intake in the north Iranian diet and high incidence of diseases among people in the north provinces in Iran. To assess the levels of Cadmium and Lead in Hashemi raw rice (Oryza Sativa), 100 samples after harvesting and 50 samples from one-year stored were randomly collected from 10 major rice production areas in 2012 .All samples were collected in during harvesting of rice in Gillan fields in two consequent years. Samples were analyzed by Atomic Absorption Spectrophotometer in 4 stages of : raw , rinsing , boiling & draining and cooking rice . Results were determined as mean ± SD of dry weight from three replicates in each test. The samples were analyzed by wet digestion method and standardized international protocols were followed for the preparation of material and analysis of heavy metals contents and analyzed by Atomic Absorption Spectrophotometer.The mean content of Cadmium and Lead in all samples had Cadmium and lead contents above maximum level which is recommended by FAO/WHO Expert Committee on Food Additives (JECFA) .Average concentrations of lead and cadmium in cooking rice is lower than boiling and draining rice and the results show that washing and rinsing rice has the significant role) in decreasing the cadmium and lead contents. Repetitive washing of the rice can greatly reduce level of heavy metal contents. The total dietary exposure levels of Lead and Cadmium determined in this study were compared with the provisional tolerable weekly intakes (PTWLS) by the JECFA and showed higher than it. Our results reveal that weekly Cadmium and lead intake from rice were higher than the maximum weekly intake recommended by WHO/FAO.
Authors and Affiliations
Parisa Ziarati, Sajad Arbabi, Sepideh Arbabi Bidgoli and Mahnaz Qomi
Keywords
Related Articles
- EP ID EP32302
- DOI -
- Views 320
- Downloads 0
Effect of the kind of nitrogen fertilizer on the performance of host plant sunflower (Helianthurn annuas L.) in presence of parasite plant (Orobanche aegyptiaca)
In order to evaluate the effects of kind and amount of nitrogenous fertilizers on control of broomrape in prescience of sunflower as host plant a factorial experiment in randomized block design with 4 replication in Az...
Polyphenolic compounds (HPLC analysis) and Antioxidant Activity of Stevia Rebaudiana (Asteraceae) by FRAP and DPPH Assay in greenhouse and free space condition
This paper aimed to establish the content in polyphenolic compounds and antioxidant activity of Stevia Rebaudiana (Asteraceae) by FRAP and DPPH Assay in greenhouse and Free space condition. A high-performance liquid ch...
Removal of Nacl from aqueous solutions by using clinoptilolite
This study focuses on the absorption of sodium chloride via clinoptiolite. The effect of different parameters is investigated like concentration, adsorbent dosage and particle size. The results showed that, by decreasi...
The Appraisal of Land Use Changes and its Influence on Soil Quality Indexes in Gambue Region Western of Khouzestan Province
The increase in human population has increased the expectations of life standards and scarcity of natural resources. Today, there is a consensus that land-use change is one of the main causes of the change in the quali...
The effect of salt stress on respiration, PSII function, chlorophyll, carbohydrate and nitrogen content in crop plants
Salinity is the major environmental factor limiting plant growth and productivity. Plants are subjected to various stresses, which they express by their response in the form of various biochemical changes in them, whic...