Comparative study on the nutrients, heavy metals and pesticide composition of some locally produced and marketed rice varieties in Nigeria

•All the local rice varieties had higher amounts of tryptophan and tyrosine than the imported rice variety.•The threonine contents of the control and sample B were higher than the WHO standards.•Lead and mercury were not detected in all the rice varieties.•The local rice varieties competed favourabl...

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Bibliographic Details
Published in:Food chemistry 2019-04, Vol.278, p.617-624
Main Authors: David, Ebuka, Eleazu, Chinedum, Igweibor, Nnanna, Ugwu, Chiamaka, Enwefa, Glory, Nwigboji, Nnaemeka
Format: Article
Language:English
Subjects:
Amino Acids - analysis
Food biochemistry
Food chemistry
Food quality
Metals, Heavy - analysis
Nigeria
Nutrients
Nutrients - analysis
Oryza - chemistry
Oryza - metabolism
Pesticide Residues - analysis
Toxicology
Vitamins - analysis
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Summary:•All the local rice varieties had higher amounts of tryptophan and tyrosine than the imported rice variety.•The threonine contents of the control and sample B were higher than the WHO standards.•Lead and mercury were not detected in all the rice varieties.•The local rice varieties competed favourably with the foreign variety in terms of nutrient composition. The nutrients, heavy metals and pesticide concentrations of an imported (Gold) and three locally produced and marketed rice varieties (Samples B-mass, C-R8 and D-CP) in Nigeria were investigated using standard techniques. All the rice varieties contained considerable amounts of moisture, ash, protein, lipid and carbohydrate but were low in crude fibre. The local rice varieties contained higher (P 
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2018.11.100