Which of the following methods do not belong to solvent extraction? ()
A: Simultaneous distillation and extraction;
B: Solvent assisted flavor evaporation;
C: Solid phase microextraction;
D: Direct solvent extraction
A: Simultaneous distillation and extraction;
B: Solvent assisted flavor evaporation;
C: Solid phase microextraction;
D: Direct solvent extraction
举一反三
- Which<br/>of the following techniques is not commonly used for taste compounds<br/>extraction? () A: Solvent extraction; B: Headspace extraction; C: Ultrafiltration; D: Ultrasonic technique
- Coumarin<br/>compounds can be extracted by the following methods except __. A: Solvent extraction B: Maceration with cold water C: Extract with alkaline and precipited with acid D: Steam Distillation E: Sublimation
- Which one is NOT the obtaining method for essential oils? A: Pressing B: Organic solvent extraction C: Hydrodistillation D: Hydrodiffusion
- The methods of multi-focus image extraction are as follows A: spatialdomain methods B: transform domain methods C: Binarization method D: Segmentation and extraction method
- The purification methods commonly used in the analysis of traditional<br/>Chinese medicine preparations include ( ) A: Liquid-liquid extraction B: chromatography C: precipitation method D: distillation