Kalıntı Yönüyle Kimyon ve Anasonda Linuron, İsoproturon ve Bunların Metobolitlerinin Araştırılması

Abstract

Bu çalışma, ihracata yönelik organik kimyonlarda isoproturon metaboliti (4-isopropil anilin) kalıntısının çıkması nedeniyle, sorunun aydınlatılması amacıyla yapılmıştır. Bu amaçla organik ve konvansiyonel anasonda ve kimyonda, linuron, isoproturon ve metabolitlerinin kalıntı durumu farklı gelişme dönemlerinde araştırılmıştır. Kalıntı analizleri için numuneler “Eurofins Dr. Specht Laboratorian - Almanya” na gönderilmiştir. Anasonda linuron ve isoproturon metaboliti kalıntısı uygulamadan 10 gün sonra en yüksek düzeyde (4.23 mg/kg) bulunmuş olup bu değer hasat döneminde ve kurutma sonrası düşüş (sırasıyla, 0.07 ve 0.01 mg/kg) göstermiştir. Benzer şekilde konvansiyonel kimyonda linuron ve isoproturon metaboliti ilk dönemde yüksek (4.4 – 2.51 mg/kg) bulunurken hasat öncesi ve kurutmada bu değer (0.28 – 0.20 mg/kg) düşüş göstermiştir. Organik anason ve kimyonda ise linuron metaboliti ve isoproturon kalıntısına rastlanmamıştır. Ancak kimyonun hasada yakın döneminde isoproturon metabolitinin limitin değerlerinin üzerinde bulunduğu (0.15 – 0.02 mg/kg) saptanmıştır. Isoproturon, gerek Türkiye de gerekse dünyada da kimyonda ruhsatlı değildir. Ayrıca genel olarak herbisit kalıntısının uygulama dönemini takiben yüksek daha sonra ise düşüş olması beklenir. Ancak isoproturon metaboliti 4 Isopropylanilin kimyonda uygulamadan 10 ve 24 gün sonra günlerde görülmemesine rağmen, hasat dönemine gelen bitkilerde ortaya çıkmaktadır. Bu durum kimyonun isoproturon metabolitine benzer doğal bir bileşik içerebileceği kanaatini uyandırmaktadır

Keywords

• Linuron, Isoproturon, Anason, Kimyon

Determination of Isoproturon, Linuron and their Metabolites Residues in Cumin and Anise

Abstract

This study was conducted to clarify the issue of Isoproturon metabolite residues in organic cumin creating problems during exports. For this purpose, presence the residues of linuron, isoproturon and their metabolites in conventionally and organically grown anise and cumin crops was tested at different growth stages. The samples collected at different stages of both plants were send to “Eurofin Dr. Specht Laboratorian Germany” for residues analysis. Highest amounts of residues of linuron and isoproturon metabloites in conventionally grown anise was observed 10 days after the application (4.23 mg/kg) and decrease was observed at harvesting and after drying (0.07 and 0.01 mg/kg, respectively). Similarly, in conventionally grown cumin; linuron and isoproturon metabloites residues were highest at initial growth stages (2.51-4.4 mg/kg) and decreased at harvest and after drying following harvest (0.28 and 0.20 mg/kg, respectively). Linuron metabolites and isoproturon residues were not detected in organically grown anise and cumin plants. However, a isoproturon metabloite (4-Isopropylanilin) was detected more than safe amount (0.15 – 0.02 mg/kg) in cumin near to harvest stage. Isoproturon is neither registered in Turkey nor in the World for use in cumin. Residues of herbicides are generally higher at the beginning of applications and decrease at the end of vegetation period. However, 4-Isopropylanilin were not detected at 10th and 24th days after application in cumin but were present near to the harvest. This study concludes that cumin might contain a natural product having resemblance to the isoproturon metabolite

Keywords

• Linuron, Isoproturon, Anise, Cumin

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