Luo ShaoHua

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Study on chemical constituents of the volatile oil in Kaempferia galanga L. from Guangxi by GC-MS

Zhongguo tiaoweipin (2010)

Chen Fu-bei Liu Hong-xing Luo ShaoHua Shaodong Chen

In this study,the volatile oil was extracted from Kaempferia galanga L.growing in Pingnan,Guangxi by Soxhelt method with petroleum ether.The chemical component of volatile oil was analysised by the method of GC-MS,and the relative contents of these compounds were calculated using square peaks to normalization.On the volatile oil 37 peaks were separated,of which 36 compounds were identified,which accounted for 99.75% of it,the main chemical constituents was trans-ethyl-p-methoxycinnamate (44.38%),Pentadecane(13.20%),trans-ethyl cinnamate (11.33%),cis-ethyl p-methoxycinnamate (5.81%) and so on.

Pentadecane

Petroleum ether

Ethyl ester

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Comparison of chemical constituents for volatile oil from fresh Kaempferia galanga L. by Soxhlet method and steam distillation.

Chen Fu-bei Shaodong Chen Liu Hong-xing Luo ShaoHua Yan YiFang

Volatile oil from fresh Kaempferia galanga L.was extracted by Soxhelt method with petroleum ether and steam distillation.The chemical constituents was analysised by gas chromatography-mass spectrometry(GC-MS),the relative contents of these compounds were calculated using square peaks to normalization.Effect of different methods on main components and relative contents was compared simultaneously.The result shows that the main chemical constituents of the volatile oil are trans-ethyl-p-methoxycinnamate,trans-ethyl cinnamate,Pentadecane,cis-ethyl p-methoxycinnamate,globulol and so on.The kind of main components and relative contents were significant difference by different extraction methods.

Steam distillation

Pentadecane

Petroleum ether

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Energy-saving technique for drying of slice mushroom.

Xiandai shipin keji (2010)

Ming Tang Yan Zhao Luo ShaoHua Shao Wei

Effects of air temperature,thickness of slice mushroom and slice mushroom loading on drying of slice mushroom were studied by response surface m ethodology based on the Box-Benhnken center united experimental design principles.The optimized drying conditions of slice mushroom were as follows:air temperature of 61.1 ℃,thickness of 2.9 mm,mushroom loading of 2.03 kg/m2 and drying time of 6 h.Under these conditions,the dried mushroom-water ratio was 5.04% and the minimum energy consumption was 1.53 kW·h/kg,which was 30% lower than that using the traditional hot dryer house method.

Edible mushroom

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Determination of the amount of 13 metal elements of Zingiber officinale Rosc. by FAAS.

Zhongguo tiaoweipin (2010)

Zhang Li-min Chen Fu-bei Zou Ai-lan Shaodong Chen Luo ShaoHua

Determination of the amount of 13 metal elements of K,Na,Ca,Mg,Fe,Co,Ni,Cu,Zn,Mn,Cd,Cr and Pb in Zingiber Officinale Rosc.was studied by flame atomic absorption spectrophotometry(FAAS)after HNO3-HClO4 digestion.The analytical results indicated that there were comparatively rich elements in Zingiber Officinale Rosc.such as K,Ca,Na,Mg,Mn and Fe,especially the concentration of K in the highest,amounting to 20100 μg ·g-1,However,concentrations of Cd were very low,only 0.53 μg ·-1,while Cr were not checked out in the samples.

Zingiber officinale

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