Chemical fingerprint and simultaneous determination of alkaloids and flavonoids in aerial parts of genusPeganumindigenous to China based on HPLC-UV: application of analysis on secondary metabolites accumulation

2014 ◽  
Vol 28 (12) ◽  
pp. 1763-1773 ◽  
Author(s):  
Fangfang Wen ◽  
Xuemei Cheng ◽  
Wei Liu ◽  
Min Xuan ◽  
Lei Zhang ◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Simultaneous Determination ◽  
Chemical Fingerprint ◽  
Aerial Parts

Chemical fingerprint and simultaneous determination of flavonoids in Flos Sophorae Immaturus by HPLC-DAD and HPLC-DAD-ESI-MS/MS combined with chemometrics analysis

2014 ◽  
Vol 6 (12) ◽  
pp. 4328-4335 ◽  
Author(s):  
Zhisheng Xie ◽  
Shingchung Lam ◽  
Junwei Wu ◽  
Depo Yang ◽  
Xinjun Xu
Keyword(s):  
Simultaneous Determination ◽  
Quality Evaluation ◽  
Chemical Fingerprint ◽  
Esi Ms

A fingerprinting and quantifying method is developed for the quality evaluation of Flos Sophorae Immaturus by HPLC-DAD and HPLC-DAD-ESI-MS/MS.

Simultaneous Determination of Five Active Constituents in the Aerial Parts of Saururus chinensis by HPLC-DAD

2009 ◽  
Vol 32 (20) ◽  
pp. 2943-2953 ◽  
Author(s):  
Seung Hyun Kim ◽  
Eun Jung Choi ◽  
Mi Kyeong Lee ◽  
Ki Yong Lee ◽  
Jung Hyun Park ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Active Constituents ◽  
Aerial Parts ◽  
Saururus Chinensis

scholarly journals Isolation of Daphnetin 8-methyl ether from Daphne oleoides and its Anti-bacterial activity

2015 ◽  
Vol 4 (4) ◽  
pp. 224-226
Author(s):  
Muhammad Younus Dar ◽  
◽  
Tabassum Ara ◽  
Seema Akbar ◽  
◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Benzoic Acid ◽  
Methyl Ether ◽  
13C Nmr ◽  
Methanolic Extract ◽  
Bacterial Activity ◽  
Moderate Activity ◽  
Aerial Parts ◽  
The World

The aim of the present work was to isolate and identify secondary metabolites of Daphne oleoides, which was not phytochemically analysed in this important geographical region of the world until now, followed by the determination of anti-bacterial activity. An important plant coumarin daphnetin 8-methyl ether (1)[7-hydroxy8-methoxy coumarin] not previously reported from this species was isolated from the methanolic extract of aerial parts of Daphne oleoides, along with already reported 4-ethoxy benzoic acid (2)and 4-hydroxy benzoic acid(3) by repeated column chromatography. The structures of these compounds were elucidated on the basis of 1H, 13C NMR and MS analysis. The compound 1 was evaluated for its anti-bacterial potential which showed moderate activity.

Simultaneous determination of urea and melamine in milk powder by nonlinear chemical fingerprint technique

2017 ◽  
Vol 221 ◽  
pp. 898-906 ◽  
Author(s):  
Yongjie Ma ◽  
Wenbin Dong ◽  
Hongliang Bao ◽  
Yue Fang ◽  
Cheng Fan
Keyword(s):  
Simultaneous Determination ◽  
Milk Powder ◽  
Chemical Fingerprint ◽  
Nonlinear Chemical Fingerprint

scholarly journals SIMULTANEOUS DETERMINATION OF FOUR PHENOLIC COMPOUNDS IN EXTRACTS OF AERIAL PARTS OFIpomoea pes-caprae(L.) R. Br. (Convolvulaceae) BY HPLC-UV

Química Nova ◽  
2014 ◽  
Author(s):  
Daniela Maes Dutra ◽  
Cristiane da Silva Barth ◽  
Luciana Catia Block ◽  
Nara Lins Meira Quintão ◽  
Angélica Garcia Couto ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Simultaneous Determination ◽  
Aerial Parts

scholarly journals The content of phenolic compounds in underground and aerial parts of different Mentha species

2012 ◽  
Vol 59 (1) ◽  
pp. 30-38 ◽  
Author(s):  
S. Fialová ◽  
D. Tekeľová ◽  
D. Grančai
Keyword(s):  
Free Radical ◽  
Phenolic Compounds ◽  
Secondary Metabolites ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Spectrophotometric Methods ◽  
The Past ◽  
Aerial Parts ◽  
Hydroxycinnamic Derivatives

The content of phenolic compounds in underground and aerial parts of different Mentha speciesMentha L., the genus belonging to family Lamiaceae, subfamily Nepetoidae, has high commercial importance in the pharmacy as well as in food industry. Mints are available in all five continents and are important sources of each traditional medicine in the prevention and therapy of plenty of diseases. The most active compounds are essential oil and polyphenols. In the past the secondary metabolites in aerial parts were examined, but there is no evidence about the determination of secondary metabolites in underground parts of mints. Therefore the object of this work was to determine the content of phenolic compounds (total hydroxycinnamic derivatives (THD) and flavonoids) of methanol extracts of rhizomes of different Mentha L. and their comparison with leaves extracts. The contents of secondary metabolites were determined using spectrophotometric methods of Slovak Pharmacopoeia. We have detected similar quantities of THD in leaves (0.79 - 2.48 %) and rhizomes (0.96 - 2.18 %), but underground parts were poor in content of flavonoids (< 0.1 %). The free radical scavenging activity using DPPH free radical was investigated as well. A bit stronger antioxidant activity was shown in leaves extracts considering flavonoids content.

A general computer program for the extended plate overlap algorithm

1978 ◽  
Vol 48 ◽  
pp. 287-293 ◽  
Author(s):  
Chr. de Vegt ◽  
E. Ebner ◽  
K. von der Heide
Keyword(s):  
Computer Program ◽  
Simultaneous Determination ◽  
General Computer Program ◽  
General Computer

In contrast to the adjustment of single plates a block adjustment is a simultaneous determination of all unknowns associated with many overlapping plates (star positions and plate constants etc. ) by one large adjustment. This plate overlap technique was introduced by Eichhorn and reviewed by Googe et. al. The author now has developed a set of computer programmes which allows the adjustment of any set of contemporaneous overlapping plates. There is in principle no limit for the number of plates, the number of stars, the number of individual plate constants for each plate, and for the overlapping factor.

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