1985
DOI: 10.1021/jf00064a013
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Cypermethrin and fenvalerate residues in stored wheat and milled fractions

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Cited by 18 publications
(17 citation statements)
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“…During milling, residues accumulated in the bran fractions and were reduced in white flour. Joia et al (1985) observed that highest amounts of cypermethrin and fenvalerate were present in bran and least in endosperm. Both the insecticides degraded in treated wheat at slow rates.…”
Section: Products Manufacturementioning
confidence: 92%
“…During milling, residues accumulated in the bran fractions and were reduced in white flour. Joia et al (1985) observed that highest amounts of cypermethrin and fenvalerate were present in bran and least in endosperm. Both the insecticides degraded in treated wheat at slow rates.…”
Section: Products Manufacturementioning
confidence: 92%
“…This search was necessitated mainly by the harmful side effects and high costs of insecticides and their ability to leave harmful residue in stored produce and of course causing the emergence of resistant strains of pests (Agboola, 1992). For instance Joia et al (1985) reported that the reduction of residues in flour through bread making with wheat treated with cypermethrin and fenvalerate was slow and that 79-84% of cypermethrin and 87-88% of fenvalerate were present in bread made from flour containing residue of both insecticides. This and many other data, which have resulted from the search for alternative pest management strategies, suggest the need for the use of plant varieties with host-resistant qualities in avoiding insect pest infestation in stored produce.…”
Section: Introductionmentioning
confidence: 99%
“…Porém, os bicos de jato cônico requerem alta energia hidráulica para gerar gotas; em fase disso, esses modelos de bico operam em pressões elevadas, gerando assim, gotas finas (KOO, 1990; RAMOS; PIO, 2003; BATEMAN, 2004; DUKES et al, 72 2004; SUMNER, 2006; DAUM; REED, 2006 , 1988;GRAGASIN et al, 1994; AFRIDI; PARVEEN; MASUD, 2001). Por outro lado, o fenitrotion é considerado o inseticida mais instável entre os organofosforados utilizados na proteção de grãos armazenados (GRAGASIN et 90 al, 1994), já o fenvalerato é considerado o mais persistente dos piretróides JOIA;LOSCHIAVO, 1985).…”
Section: Resultsunclassified
“…Porém, os bicos de jato cônico requerem alta energia hidráulica para gerar gotas; em fase disso, esses modelos de bico operam em pressões elevadas, gerando assim, gotas finas (KOO, 1990; RAMOS; PIO, 2003; BATEMAN, 2004; DUKES et al, 72 2004; SUMNER, 2006; DAUM; REED, 2006 , 1988;GRAGASIN et al, 1994; AFRIDI; PARVEEN; MASUD, 2001). Por outro lado, o fenitrotion é considerado o inseticida mais instável entre os organofosforados utilizados na proteção de grãos armazenados (GRAGASIN et 90 al, 1994), já o fenvalerato é considerado o mais persistente dos piretróides JOIA;LOSCHIAVO, 1985).Entre os mecanísmos que atuam na degradação de pesticidas em pos-colheita, citam-se, a volatilização, a hidrolise e a oxidação (HOLLAND et al, 1994). Com relação aos organofosforados, a volatilização e decomposição fotolítica são os mecanísmos mais importantes na degradação desses inseticidas (GRAGASIN et al, 1994 farelo > grão > farinha.…”
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