The CI-TOFMS of ketoprofen (KP), β-cyclodextrin (CD) and their inclusion complex (KP-CD) have been reported. There are no [M+H]^+ peaks of both KP-CD and CD in their spectra due to the samples involatile and thermal ...The CI-TOFMS of ketoprofen (KP), β-cyclodextrin (CD) and their inclusion complex (KP-CD) have been reported. There are no [M+H]^+ peaks of both KP-CD and CD in their spectra due to the samples involatile and thermal instable. A base peak at m/z 255 in the spectra of both KP and KP-CD was found, which can be assigned to [M+H]^+of KP or inclusive KP (KPi). Three fragment ions a, b and c were formed in the spectra of both KP and KPi with different abundances for the same ions. All the fragment ions of CD and inclusive CD (CDi) have been assigned.展开更多
The extracts of Ganoderma lucidum capsule powder (A) and natural ganoaerma lucidum (B) have been and analyzed by gas chromatography-time of flight mass spectrometry (GC-TOFMS). A great quantity of aliphatic acid (este...The extracts of Ganoderma lucidum capsule powder (A) and natural ganoaerma lucidum (B) have been and analyzed by gas chromatography-time of flight mass spectrometry (GC-TOFMS). A great quantity of aliphatic acid (ester)Was observed at tR= 18min and tR = 20min, including the unsaturated aliphatic acid which is valuable. The relative content of aliphatic acid in sample A was 49.6%, of which 19.4% was linoleic acid, and those in sample B was 32.6%, of which 7.0% was linoleic acid. The relative content of aliphatic acids in sample A was higher than that in sample B.展开更多
文摘The CI-TOFMS of ketoprofen (KP), β-cyclodextrin (CD) and their inclusion complex (KP-CD) have been reported. There are no [M+H]^+ peaks of both KP-CD and CD in their spectra due to the samples involatile and thermal instable. A base peak at m/z 255 in the spectra of both KP and KP-CD was found, which can be assigned to [M+H]^+of KP or inclusive KP (KPi). Three fragment ions a, b and c were formed in the spectra of both KP and KPi with different abundances for the same ions. All the fragment ions of CD and inclusive CD (CDi) have been assigned.
文摘The extracts of Ganoderma lucidum capsule powder (A) and natural ganoaerma lucidum (B) have been and analyzed by gas chromatography-time of flight mass spectrometry (GC-TOFMS). A great quantity of aliphatic acid (ester)Was observed at tR= 18min and tR = 20min, including the unsaturated aliphatic acid which is valuable. The relative content of aliphatic acid in sample A was 49.6%, of which 19.4% was linoleic acid, and those in sample B was 32.6%, of which 7.0% was linoleic acid. The relative content of aliphatic acids in sample A was higher than that in sample B.
