Effect of storage temperature on degradation of methidathion in fortified orange and peach juices

dc.contributor.author	Kyriakidis, NB	en
dc.contributor.author	Athanasopoulos, P	en
dc.contributor.author	Georgitsanakou, I	en
dc.date.accessioned	2014-06-06T06:44:17Z
dc.date.available	2014-06-06T06:44:17Z
dc.date.issued	2000	en
dc.identifier.issn	10603271	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/1782
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0034219978&partnerID=40&md5=e46133744667218694fbae8a9081c5be	en
dc.subject.other	insecticide	en
dc.subject.other	methidathion	en
dc.subject.other	pesticide residue	en
dc.subject.other	phosphorothioic acid derivative	en
dc.subject.other	article	en
dc.subject.other	beverage	en
dc.subject.other	chemistry	en
dc.subject.other	citrus fruit	en
dc.subject.other	food preservation	en
dc.subject.other	fruit	en
dc.subject.other	gas chromatography	en
dc.subject.other	half life time	en
dc.subject.other	temperature	en
dc.subject.other	Beverages	en
dc.subject.other	Chromatography, Gas	en
dc.subject.other	Citrus	en
dc.subject.other	Food Preservation	en
dc.subject.other	Fruit	en
dc.subject.other	Half-Life	en
dc.subject.other	Insecticides	en
dc.subject.other	Organothiophosphorus Compounds	en
dc.subject.other	Pesticide Residues	en
dc.subject.other	Temperature	en
dc.title	Effect of storage temperature on degradation of methidathion in fortified orange and peach juices	en
heal.type	journalArticle	en
heal.publicationDate	2000	en
heal.abstract	The effect of storage temperature on methidathion degradation in orange and peach juices was studied. The insecticide was aseptically added to packed orange and peach juices, which were stored at 40, 15, and 0°C. Samples were taken at regular intervals and examined for residues of methidathion. Residues were determined with a simple gas chromatographic method; recoveries of methidathion from orange and peach juices ranged from 88.1 to 110% for both juices, and the limits of determination were 0.004 and 0.003 mg/kg, respectively. The experimental data were used to evaluate rate constants, half-lives, and times required to reach legal maximum residue limits, and activation energies for the decomposition of methidathion in orange and peach juices. Storage of fruit juices in refrigerated rooms greatly extended the half-life of methidathion beyond that of methidathion in samples stored at higher temperatures. Half-life values for methidathion in orange and peach juices, respectively, were 4.1 and 3.8 days for storage at 40°C, 115 and 113 days for storage at 15°C, and 330 and 385 days for storage at 0°C. Activation energies for methidathion degradation in orange and peach juices were 22.6 and 21.7 kcal/mol, respectively.	en
heal.journalName	Journal of AOAC International	en
dc.identifier.issue	4	en
dc.identifier.volume	83	en
dc.identifier.spage	967	en
dc.identifier.epage	975	en