Determination of volatile components of saffron by optimised ultrasound-assisted extraction in tandem with dispersive liquid–liquid microextraction followed by gas chromatography–mass spectrometry

2014 ◽  
Vol 143 ◽  
pp. 499-505 ◽  
Author(s):  
Hassan Sereshti ◽  
Reza Heidari ◽  
Soheila Samadi
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Gas Chromatography Mass Spectrometry ◽  
Volatile Components ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Ultrasound Assisted ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction

Differentiation of two types of pu-erh teas by using an electronic nose and ultrasound-assisted extraction-dispersive liquid–liquid microextraction-gas chromatography-mass spectrometry

2016 ◽  
Vol 8 (3) ◽  
pp. 593-604 ◽  
Author(s):  
Jing Ye ◽  
Wenguang Wang ◽  
Chitang Ho ◽  
Jun Li ◽  
Xiaoyu Guo ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Sensory Evaluation ◽  
Electronic Nose ◽  
Gas Chromatography Mass Spectrometry ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Ultrasound Assisted ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction

It is a challenging task to discriminate raw pu-erh tea, notably aged raw tea, from ripened pu-erh tea, both of which are the two primary types of pu-erh teas, only based on the taster's sensory evaluation.

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