Which
of the following techniques is not commonly used for taste compounds
extraction? ()
A: Solvent extraction;
B: Headspace extraction;
C: Ultrafiltration;
D: Ultrasonic technique
of the following techniques is not commonly used for taste compounds
extraction? ()
A: Solvent extraction;
B: Headspace extraction;
C: Ultrafiltration;
D: Ultrasonic technique
举一反三
- 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
- 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
- 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
- Which of these are good techniques of extraction? A: Selection B: Pattern recognition C: Differencing D: Filters
- Which one is NOT the obtaining method for essential oils? A: Pressing B: Organic solvent extraction C: Hydrodistillation D: Hydrodiffusion