SFE/Prep SFC开关系统

We determined the purity of extrac t s collec t ed in SFE by HPLC -PDA. Figure 9 shows the chromatograms of caffeine standard solution and concentrated extrac ts (mixture of ext r ac t ion 1 to 4) from sample 1. Figure 10shows the comparison of caffeine spectra between sta n da r d solution and s ample solut i on. A high corre l at i on coeff i cien t was obtained between them (>0.9995). Figure 11 a n d Table 3 show the resu l ts of peak pur i ty.98.8% of the peak wa s determined h i gh-pur i ty caffeine . 【System】 【Sample Preparation】 ac c ording t o t h e degrees o f correl a tion. Conclusion ●We ach i eved the extraction and fract i on collection o f caffe i ne from gree n coffee beans using a switch i ng system SFE/Prep SFC-MS. ●T he combination of PDA and MS detectors enables the detection a nd fraction collection of various compounds V with or wit h out a chromop h ore. ●ChromNAV softoware provides automatic and acc u rate fractions with advanced fraction algorithms， and useful f unctions (ex. fr action simulation， graphical display o f col l ec t ion mon i toring and results).