High-performance liquid chromatographic determination with photodiode array detection of ellagic acid in fresh and processed fruits

2000 ◽  
Vol 896 (1-2) ◽  
pp. 87-93 ◽  
Author(s):  
Yoshiaki Amakura ◽  
Mai Okada ◽  
Sumiko Tsuji ◽  
Yasuhide Tonogai
Keyword(s):  
Ellagic Acid ◽  
High Performance ◽  
Chromatographic Determination ◽  
High Performance Liquid Chromatographic ◽  
Photodiode Array Detection ◽  
Photodiode Array ◽  
Array Detection ◽  
Liquid Chromatographic Determination ◽  
Liquid Chromatographic

scholarly journals Liquid Chromatographic Determination of Five Benzoylurea Insecticides in Fruit and Vegetables

1998 ◽  
Vol 81 (5) ◽  
pp. 1037-1042 ◽  
Author(s):  
Miguel Gamón ◽  
Adolfo Saez ◽  
Rosa Pelegrí ◽  
Inmaculada Peris ◽  
Josá G De La Cuadra ◽  
...  
Keyword(s):  
Solid Phase ◽  
Chromatographic Determination ◽  
Photodiode Array Detection ◽  
Photodiode Array ◽  
Array Detection ◽  
Liquid Chromatographic Determination ◽  
Benzoylurea Insecticides ◽  
Vegetables And Fruits ◽  
Liquid Chromatographic

Abstract A liquid chromatographic (LC) method was developed to determine 5 benzoyl ureas—diflubenzuron, hexaflumuron, teflubenzuron, flufenozuron, and lufenuron—in peppers, tomatoes, eggplants, cucumbers, and oranges. Preparation of samples involve extraction with acetone and partitioning into dichloromethane-petroleum ether. A portion of this extract is cleaned up with a solid-phase extraction aminopropyl disposable column. With LC analysis using an RP-8-DB microbore column, acetonitrilewater (70 + 30, v/v) as mobile phase, and photodiode array detection at 254 nm, recovery and repeatability data were collected for the 5 benzoylureas on 4 vegetables and citrus in the range 0.04-2.0 mg/kg. Validated limits of detection and quantitation were 0.01 and 0.04 mg/kg, respectively. The method is reliable for routine analysis of vegetables and fruits

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