Effectiveness of pressurized liquid extraction and solvent extraction for the simultaneous quantification of 14 pesticide residues in green tea using GC

2008 ◽  
Vol 31 (10) ◽  
pp. 1750-1760 ◽  
Author(s):  
Soon-Kil Cho ◽  
A. M. Abd El-Aty ◽  
Jeong-Heui Choi ◽  
Yang-Mo Jeong ◽  
Ho-Chul Shin ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Green Tea ◽  
Pesticide Residues ◽  
Liquid Extraction ◽  
Pressurized Liquid Extraction ◽  
Simultaneous Quantification

scholarly journals Pressurized liquid extraction of caffeine and catechins from green tea leaves using ethyl lactate, water and ethyl lactate + water mixtures

2015 ◽  
Vol 96 ◽  
pp. 106-112 ◽  
Author(s):  
David Villanueva Bermejo ◽  
José A. Mendiola ◽  
Elena Ibáñez ◽  
Guillermo Reglero ◽  
Tiziana Fornari
Keyword(s):  
Green Tea ◽  
Liquid Extraction ◽  
Pressurized Liquid Extraction ◽  
Ethyl Lactate ◽  
Tea Leaves ◽  
Green Tea Leaves

Pressurized liquid extraction and low-pressure solvent extraction of carotenoids from pressed palm fiber: Experimental and economical evaluation

2015 ◽  
Vol 94 ◽  
pp. 90-100 ◽  
Author(s):  
Fiorella P. Cardenas-Toro ◽  
Sylvia C. Alcázar-Alay ◽  
Janclei P. Coutinho ◽  
Helena Teixeira Godoy ◽  
Tânia Forster-Carneiro ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Low Pressure ◽  
Liquid Extraction ◽  
Pressurized Liquid Extraction ◽  
Palm Fiber ◽  
Economical Evaluation

Rapid and simultaneous quantification of seven bioactive components in Radix Astragali based on pressurized liquid extraction combined with HPLC-ESI-MS/MS analysis

2015 ◽  
Vol 7 (7) ◽  
pp. 3054-3062 ◽  
Author(s):  
Feng Qiu ◽  
Zhanqi Tong ◽  
Jianyi Gao ◽  
Manyuan Wang ◽  
Muxin Gong
Keyword(s):  
Liquid Extraction ◽  
Pressurized Liquid Extraction ◽  
Radix Astragali ◽  
Bioactive Components ◽  
Running Time ◽  
Esi Ms ◽  
Simultaneous Quantification ◽  
Ms Analysis

The running time of analyzing one sample using the developed HPLC-ESI-MS/MS method is only 4.5 min, and more than 150 samples could be assayed daily.

scholarly journals Application of ultrasound-assisted deep eutectic solvent extraction combined with liquid-liquid extraction method to the extraction of three pesticide residues from fruit and vegetable samples

2020 ◽  
pp. 1-7
Author(s):  
Sue Chen ◽  
Qi An ◽  
Hong Sun ◽  
Mengqian Mao
Keyword(s):  
Solvent Extraction ◽  
Pesticide Residues ◽  
High Performance ◽  
Extraction Efficiency ◽  
Deep Eutectic Solvent ◽  
Liquid Extraction ◽  
Fruit And Vegetable ◽  
Vegetable Samples ◽  
Liquid Liquid Extraction ◽  
Ultrasound Assisted

Abstract A simple, inexpensive and sensitive method was developed for the simultaneous determination of three pesticide residues (carbendazim, thiophanate-methyl, and imidacloprid) in fruit and vegetable samples using high performance liquid chromatography (HPLC) based on a combined pretreatment of ultrasound-assisted deep eutectic solvent extraction (UA-DES-E) and liquid-liquid extraction (LLE). In this study, various types of deep eutectic solvents (DESs) were synthesized and the extraction efficiency was compared as extraction solvents. Results showed that glycerol-proline = 9:4 (GP-5) obtained the highest extraction efficiency among different types of DESs. Experiment conditions, including DES volume, extraction time and pH, were systematically optimized using single-factor experiment. Under the optimum conditions, the limits of detection (LODs) and quantification (LOQs) were in the ranges of 0.05–0.2 μg·mL−1 and 0.1–0.5 μg·mL−1, respectively. The relative recoveries of the three pesticides in the fruit and vegetable samples ranged from 85.7 to 113.0% at two spiked levels. Meanwhile, the method achieved excellent linearity with determination coefficients (r) greater than 0.999. Furthermore, the method was successfully applied to the analysis of the pesticides in real fruit and vegetable samples (apple, tomato, and grape).

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