Assessment of the losses of DDT and HCH residues in wheat flour duringChapati making

Chawla, R. P.; Joia, B. S.; Kalra, R. L.

doi:10.1007/bf02027033

Cited by 5 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Wheat grain is milled into flour and then processed into chapattis for consumption. Milling of wheat grain into flour has been reported to reduce the pesticide residues by about 50% (Bridges 1958), while chapattis-making caused no loss of DDT and HCH residues (Chawla et al 1979). In a study conducted in the mid-1970s, the estimated intakes of DDT and HCH through wheat flour were reported to be 300 and 120 mg day À1 , respectively (Joia et al 1978).…”

Section: Dietary Intake Of the Hch And Ddt Residues Through Contaminamentioning

confidence: 97%

Residues of DDT and HCH in wheat samples collected from different states of India and their dietary exposure: A multicentre study

Toteja

Diwakar

Mukherjee

et al. 2006

Food Additives and Contaminants

Self Cite

View full text Add to dashboard Cite

Under a multicentre study conducted by the Indian Council of Medical Research, 1712 samples of wheat grain/flour were collected from urban and rural areas in 11 states representing different geographical regions of India. These samples were analysed for residues of DDT (2,2-bis (p-chlorophenyl)-1,1,1-trichloro ethane) and different isomers of HCH (1,2,3,4,5,6-hexachloro cyclohexane, a mixture of isomers) by gas-liquid chromatography. Residues of DDT were detected in 59.4% of 1080 samples of wheat grain and in 78.2% of 632 samples of wheat flour. Different isomers of HCH were present in about 45-80% of the samples of wheat grain/flour. Medians of DDT and total HCH, respectively, for pooled samples of wheat grain were 0.013 and 0.035 mg kg(-1), while those for wheat flour were 0.01 and 0.02 mg kg(-1). Estimated daily intakes of DDT and different isomers of HCH through the consumption of wheat contaminated at their median and 90th percentiles constituted a small proportion of their acceptable daily intakes. Amongst the pesticide residues analysed, statutory maximum residue limits have been fixed only for gamma-HCH in wheat in India, as 0.1 mg kg(-1) in wheat grain and zero in wheat flour. Residue levels of gamma-HCH exceeded these maximum residue limits in five of 1080 samples of wheat grain and in 340 of 632 samples of wheat flour. The failure to meet the requirement of the gamma-HCH maximum residue limit in large number of wheat flour samples was attributed to the fixation of practically unachievable zero limit. Comparing the previous studies and the present one, the levels of residues of DDT and HCH in wheat were significantly decreased.

show abstract

Section: Dietary Intake Of the Hch And Ddt Residues Through Contaminamentioning

confidence: 97%

Residues of DDT and HCH in wheat samples collected from different states of India and their dietary exposure: A multicentre study

Toteja

Diwakar

Mukherjee

et al. 2006

Food Additives and Contaminants

Self Cite

View full text Add to dashboard Cite

show abstract

“…Chawla et al [15] proposed a method using Soxhlet extraction (SE), silica gel clean-up and GC-ECD for analysis of DDT and HCH in wheat flour. Mastovska et al [16] developed a method that used extraction by shaking in a separating funnel and dispersive solid-phase extraction combined with GC-TOF-MS and UPLC-MS-MS for analysis of pesticide multiresidues in cereal grain.…”

Section: Introductionmentioning

confidence: 99%

Development of an Analytical Method Based on Accelerated Solvent Extraction, Solid-Phase Extraction Clean-Up, then GC–ECD for Analysis of Fourteen Organochlorine Pesticides in Cereal Crops

et al. 2011

View full text Add to dashboard Cite

A method has been developed for analysis of 14 organochlorine pesticide residues in cereals. After accelerated solvent extraction and solid-phase extraction clean-up on graphitized carbon black/primary-secondary amine (GCB/PSA), to reduce co-extraction of interferences, pesticide residues were analyzed by gas chromatography with electron-capture detection. When the method was validated, recoveries were in the range 78-116%, relative standard deviations were in the range 1.1-16.3%, and limits of detection and quantification were from 1.5 to 4.2 lg kg -1 and from 4.6 to 12.5 lg kg -1 , respectively.

show abstract

Insecticide residues in wheat grains and straw arising from their storage in premises treated with BHC and DDT under malaria control program

Singh

Battu

Kalra

1988

Bull. Environ. Contam. Toxicol.

View full text Add to dashboard Cite

Assessment of the losses of DDT and HCH residues in wheat flour duringChapati making

Cited by 5 publications

References 3 publications

Residues of DDT and HCH in wheat samples collected from different states of India and their dietary exposure: A multicentre study

Residues of DDT and HCH in wheat samples collected from different states of India and their dietary exposure: A multicentre study

Development of an Analytical Method Based on Accelerated Solvent Extraction, Solid-Phase Extraction Clean-Up, then GC–ECD for Analysis of Fourteen Organochlorine Pesticides in Cereal Crops

Insecticide residues in wheat grains and straw arising from their storage in premises treated with BHC and DDT under malaria control program

Contact Info

Product

Resources

About