Removal of famoxadone, fluquinconazole and trifloxystrobin residues in red wines: effects of clarification and filtration processes

• Published in: Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes Vol. 42; no. 7; pp. 775 - 781
• Main Authors: Oliva, J, Paya, P, Camara, M.A, Barba, A
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Philadelphia, PA Taylor & Francis Group 01.09.2007; Taylor & Francis
• Subjects: Acetates - analysis; Alcoholic beverages and cider; bentonite; Biological and medical sciences; charcoal; Charcoal - chemistry; Chromatography, Gas - methods; Chromatography, High Pressure Liquid - methods; clarification; clarifying agents; famoxadone; Fermented food industries; Filtration; Fluconazole - analogs & derivatives; Fluconazole - analysis; fluquinconazole; food contamination; Food Contamination - analysis; Food Handling - methods; Food industries; food processing; food safety; Fundamental and applied biological sciences. Psychology; fungicide residues; fungicides; Fungicides, Industrial - analysis; gelatin; Imines - analysis; Methacrylates - analysis; ovalbumin; Ovalbumin - chemistry; Oxazoles - analysis; Particle Size; Pesticide Residues - analysis; polyvinylpolypyrrolidine; Povidone - analogs & derivatives; Povidone - chemistry; pyrrolidines; red wines; Removal; serum albumin; Serum Albumin - chemistry; Silica Gel; Silicon Dioxide - chemistry; Strobilurins; trifloxystrobin; Vitaceae; Wine - analysis; winemaking; Europe; Spain; Removal; Pollutant; Clarifying; Filtration; Residue; fungicides; clarifying agents; Pesticides; clarification; Red wine; Fungicide
• ISSN: 0360-1234; 1532-4109
• DOI: 10.1080/03601230701550964

The effects of six clarification agents [egg albumin, blood albumin, bentonite + gelatine, charcoal, polyvinylpolypyrrolidine (PVPP) and silica gel] on the removal of residues of three fungicides (famoxadone, fluquinconazole and trifloxystrobin) applied directly to a racked red wine, elaborated from Monastrell variety grapes from the D.O. Region of Jumilla (Murcia, Spain) were studied. The clarified wines were filtered with 0.45 μ m nylon filters to determine the influence of this winemaking process in the disappearance of fungicide residues. Analytical determination of fluquinconazole and trifloxystrobin was performed by gas chromatography with electron captor detector (ECD), while that of famoxadone using an HPLC equipped with a diode array detector (DAD). Generally, trifloxystrobin is the fungicide that is the lowest persistent one in wines, except in the egg albumin study whereas, the most persistent one is fluquinconazole. The elimination depends on the nature of the active ingredient, though the water stability in the presence of light within it has more influence than the solubility and polarity of the product itself. The most effective clarifying agents were the charcoal and PVPP. The silica gel and bentonite plus gelatine were not enough to reduce considerably the residual contents in the wine clarified with them. In general terms, filtration is not an effective step in the elimination of wine residues. The greatest removal after filtration is obtained in wines clarified with egg albumine and bentonite plus gelatine, and the lowest in those clarified with PVPP.