HPLC Determination of Aloenin in Leaves and Preparations of Aloe arborescens Mill.

2021 ◽  
Author(s):  
V. A. Kurkin ◽  
T. K. Ryazanova ◽  
A. A. Shmygareva ◽  
S. N. Glushchenko
Keyword(s):  
Hplc Determination ◽  
Aloe Arborescens

scholarly journals Antimicrobial Efficiency of Aloe arborescens and Aloe barbadensis Natural and Commercial Products

Plants ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 92
Author(s):  
Kaja Kupnik ◽  
Mateja Primožič ◽  
Željko Knez ◽  
Maja Leitgeb
Keyword(s):  
Biological Activities ◽  
Antimicrobial Properties ◽  
Aloe Barbadensis ◽  
Commercial Products ◽  
Qualitative And Quantitative ◽  
Gram Positive Bacteria ◽  
Antimicrobial Efficiency ◽  
Aloe Arborescens ◽  
Pharmaceutical Industries

Nowadays, there are many commercial products from natural resources on the market, but they still have many additives to increase their biological activities. On the other hand, there is particular interest in natural sources that would have antimicrobial properties themselves and would inhibit the growth and the reproduction of opportunistic microorganisms. Therefore, a comparative antimicrobial study of natural samples of aloe and its commercial products was performed. Qualitative and quantitative determination of antimicrobial efficiency of Aloe arborescens and Aloe barbadensis and its commercial products on fungi, Gram-negative, and Gram-positive bacteria was performed. Samples exhibited antimicrobial activity and slowed down the growth of all tested microorganisms. Research has shown that natural juices and gels of A. arborescens and A. barbadensis are at higher added concentrations comparable to commercial aloe products, especially against microbial cultures of Bacillus cereus, Candida albicans, and Pseudomonas aeruginosa, whose growths were completely inhibited at a microbial concentration of 600 μg/mL. Of particular importance are the findings of the good antimicrobial efficacy of fresh juice and gel of A. arborescens on tested microorganisms, which is less known and less researched. These results show great potential of A. arborescens for further use in medicine, cosmetics, food, and pharmaceutical industries.

A new method for the HPLC determination of gamma-hydroxybutyric acid (GHB) following derivatization with a coumarin analogue and fluorescence detection

Talanta ◽  
2008 ◽  
Vol 75 (2) ◽  
pp. 356-361 ◽  
Author(s):  
Constantinos K. Zacharis ◽  
Nikolaos Raikos ◽  
Nikolaos Giouvalakis ◽  
Helen Tsoukali-Papadopoulou ◽  
Georgios A. Theodoridis
Keyword(s):  
Fluorescence Detection ◽  
New Method ◽  
Hplc Determination ◽  
Hydroxybutyric Acid

HPLC DETERMINATION OF LINURON RESIDUES IN ASPARAGUS FOLLOWING PRE- AND EARLY POSTEMERGENCE APPLICATIONS

1990 ◽  
Vol 70 (2) ◽  
pp. 591-597 ◽  
Author(s):  
ALLAN J. CESSNA
Keyword(s):  
British Columbia ◽  
Residue Analysis ◽  
Hplc Determination

In a 2-yr study, residues of the herbicide linuron were determined by HPLC in asparagus which had been treated at two sites in British Columbia with both post- and preemergence applications at 1.1 and 2.2 kg ha−1. Maximum linuron residues detected in preemergence samples were in the order of 10 μg kg−1, whereas maximum residues in the postemergence samples were greater than 400 μg kg−1. Recoveries of linuron from fortified asparagus tissue were 92.2 ± 11.2% at the 10 μg kg−1 fortification level.Key words: Linuron, asparagus, preemergence application, residues, residue analysis

HPLC Determination of Furfural after Preliminary Extraction to Aqueous Phase

2007 ◽  
Vol 30 (14) ◽  
pp. 2081-2093 ◽  
Author(s):  
Hossein Sid Kalal ◽  
Mohamad Khayatzadeh Mahani ◽  
Mohamad Ghanadi Maragheh ◽  
Marzieh Chaloosi
Keyword(s):  
Aqueous Phase ◽  
Hplc Determination ◽  
Preliminary Extraction
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