Analysis of flavor components
The chemical composition of FM and FMA flavors are described in Table 3. Analyses of FM or FMA flavor were carried out by gas chromatography-mass spectrometry (GCMS), using an Agilent 7890 A (Agilent Technologies, Santa Clara, CA, USA) GC coupled with a 5975 C mass spectrometer (Agilent Technologies). A HP-5MS capillary column (30 m × 250 μm × 0.25 μm) was used to detect the compounds. The injector temperature was 250°C, column temperature was held at 40°C for 1 min and then programmed at 5°C/min up to 180°C and for 0 min, at 10°C/min up to 250°C and for 9 min, and finally at 10°C/min up to 300°C for 2 min.The quadrupole rod temperature was 150°C and ion source temperature was 230°C. Helium was used as the carrier gas at 1 mL/min; the split ratio was adjusted to 20. Mass spectra were acquired in electron impact mode at 70 eV, using full scan with a scan range of 40–550 atomic mass units. The acceleration voltage was turned on after a solvent delay for 3 min. All chromatographic analyses were performed in duplicate. Tentative identifications of components were from peak retention times and mass spectral data. The peak area of the components was used to determine the chemical composition content.
Analysis of flavor componentsThe chemical composition of FM and FMA flavors are described in Table 3. Analyses of FM or FMA flavor were carried out by gas chromatography-mass spectrometry (GCMS), using an Agilent 7890 A (Agilent Technologies, Santa Clara, CA, USA) GC coupled with a 5975 C mass spectrometer (Agilent Technologies). A HP-5MS capillary column (30 m × 250 μm × 0.25 μm) was used to detect the compounds. The injector temperature was 250°C, column temperature was held at 40°C for 1 min and then programmed at 5°C/min up to 180°C and for 0 min, at 10°C/min up to 250°C and for 9 min, and finally at 10°C/min up to 300°C for 2 min.The quadrupole rod temperature was 150°C and ion source temperature was 230°C. Helium was used as the carrier gas at 1 mL/min; the split ratio was adjusted to 20. Mass spectra were acquired in electron impact mode at 70 eV, using full scan with a scan range of 40–550 atomic mass units. The acceleration voltage was turned on after a solvent delay for 3 min. All chromatographic analyses were performed in duplicate. Tentative identifications of components were from peak retention times and mass spectral data. The peak area of the components was used to determine the chemical composition content.
การแปล กรุณารอสักครู่..
