C-29 ecdysteroids from Ajuga reptans var. reptans.
Journal of Natural Products (2009)
- PubMed: 19338317
Available from www.pubmedcentral.nih.gov
or
Abstract
Investigation of the ecdysteroid constituents of the herb Ajuga reptans var. reptans resulted in the isolation of three new ecdysteroids, named reptanslactone A (2), reptanslactone B (3), and sendreisterone (5), and the known 24-dehydroprecyasterone (1) and breviflorasterone (4). The structures of compounds 1-5 were determined by spectroscopic methods including one- and two-dimensional NMR measurements.
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Available from www.pubmedcentral.nih.gov
Page 1
C-29 ecdysteroids from Ajuga reptans var. reptans.
C-29
Title: Determination of sodium, potassium,
calcium and magnesium in a soy-based
dessert crème using dialysis for sample
preparation
Summary: Determination of sodium, potassium, calcium and
magnesium in a soy-based dessert crème using cation
chromatography with direct conductivity detection and
dialysis for sample preparation.
Sample: Soy-based dessert crème
Sample 10 g sample are dissolved in 1000 mL c(HNO3) = 1
Preparation: mmol/L; injection using 754 Dialysis Unit (acceptor
solution: c(HNO3) = 1 mmol/L)
Column: 6.1010.000 Metrosep Cation 1-2
Eluent: 4 mmol/L tartaric acid, 1 mmol/L dipicolinic acid
Flow: 1.0 mL/min
Injection Volume: 20 µL after dialysis
Results: Na+
mg/kg
K+
mg/kg
Ca2+
mg/kg
Mg2+
mg/kg
500 mV
1 2 3 4 5 6 7 minch1
sod
ium
po
tas
siu
m
ca
lci
um
ma
gn
esi
um
1.0 µS/cm
Title: Determination of sodium, potassium,
calcium and magnesium in a soy-based
dessert crème using dialysis for sample
preparation
Summary: Determination of sodium, potassium, calcium and
magnesium in a soy-based dessert crème using cation
chromatography with direct conductivity detection and
dialysis for sample preparation.
Sample: Soy-based dessert crème
Sample 10 g sample are dissolved in 1000 mL c(HNO3) = 1
Preparation: mmol/L; injection using 754 Dialysis Unit (acceptor
solution: c(HNO3) = 1 mmol/L)
Column: 6.1010.000 Metrosep Cation 1-2
Eluent: 4 mmol/L tartaric acid, 1 mmol/L dipicolinic acid
Flow: 1.0 mL/min
Injection Volume: 20 µL after dialysis
Results: Na+
mg/kg
K+
mg/kg
Ca2+
mg/kg
Mg2+
mg/kg
500 mV
1 2 3 4 5 6 7 minch1
sod
ium
po
tas
siu
m
ca
lci
um
ma
gn
esi
um
1.0 µS/cm
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