CHARACTERIZATION OF SURFACE AUXIN RESIDUE IN GREENHOUSE TOMATOES (LYCOPERSICON ESCULENTUM)

Abstract

Greenhouse tomato samples (n =20) was analyzed before and afer peel removal in order to determine suflace auxin residue. Mean 4-CPA residue levels of greenhouse tomatoes with and without peels were 0.383f 0. I23 mg kg-' and 0.241 f 0.085 mg kg-', respectively. This difference (36f 13 %) was statistically significant. The frequency distribution curve of tomatoes with peel had a peak point at 4-CPA reside interval of 0.4-C 0.5 mg kg-' tomato, and shifred back to 4-CPA residue interval of 0.2-CO.3 mg kg-' for tomatoes without peel. Percentage of samples having 4-CPA level lower than the critical concentration of 0.5 mg kg-' was 80% before peel removal, but increased to 100% upon being peeled. The mean 4-CPA residue ofpeels was roughly estimated to be 3.449 mg kg-' peel based on peeled versus nonpeeled fruit residue.

Plant Growth Regulator (4-Chlorophenoxy Acetic Acid) Increases Apoptosis in Gonads of Rats without Changing Hormonal Levels

“…In Denmark, fertility was reduced in pigs fed wheat that was grown using the plant growth regulator, chlormequat; therefore its use in pigs of reproductive age was banned [6]. In Turkey, both 4-CPA and BNOA are currently registered as plant growth regulators by the Ministry of Agriculture, while 2,4-dichlorophenoxyacetic acid is registered as a herbicide [8,14,15]. The World Health Organization regards 4-CPA and BNOA as slightly, and 2,4-dichlorophenoxyacetic acid as moderately hazardous agrochemicals due to their acute toxicity, but there is no recommendation for the maximum permitted concentration of 4-CPA and BNOA in food [9,20].…”

“…Exposure may be higher in other countries where 4-CPA is used. In Turkey, both 4-CPA and β-naphthoxyacetic acid (BNOA) are currently registered as plant growth regulators by the Ministry of Agriculture [8,14,15]. 4-CPA is registered as an herbicide due to the lack of overt toxicity in sub-chronic dietary studies, the low volume/minor use status, and the lack of acute dietary exposure concerns regarding 4-CPA.…”