Dry Column Chromatographic Procedure for Rapid Concentration of Biological Activity in Natural Products Fractionation

1981 ◽  
Vol 70 (3) ◽  
pp. 329-331 ◽  
Author(s):  
Gerard C. Hokansonx ◽  
Nancy J. Matyunas
Keyword(s):  
Natural Products ◽  
Biological Activity ◽  
Chromatographic Procedure ◽  
Products Fractionation ◽  
Column Chromatographic

Natural Products of the Fungal Genus Humicola: Diversity, Biological Activity, and Industrial Importance

2021 ◽  
Author(s):  
Sabrin R. M. Ibrahim ◽  
Shaimaa G. A. Mohamed ◽  
Ahmed E. Altyar ◽  
Gamal A. Mohamed
Keyword(s):  
Natural Products ◽  
Biological Activity ◽  
Fungal Genus

Nonaqueous Polarographic Analysis of Nitroglycerin

1969 ◽  
Vol 52 (4) ◽  
pp. 847-853
Author(s):  
Albert L Woodson ◽  
Larry L Alber
Keyword(s):  
Wave Height ◽  
Concentration Profile ◽  
Organic Nitrates ◽  
Nonaqueous Medium ◽  
Tetrabutylammonium Perchlorate ◽  
Polarographic Analysis ◽  
Dc Polarography ◽  
Chromatographic Procedure ◽  
Column Chromatographic

Abstract The DC and AC polarographic response of nitroglycerin in the nonaqueous medium of acetonitrile-0.1M tetrabutylammonium perchlorate is presented. DC polarographic results are shown to be superior with respect to sensitivity limits and linearity of the response (wave height) vs. concentration profile. DC polarography is applied successfully to the analysis of two types of commercial formulations containing nitroglycerin. The results are compared with other methods for the determination of nitroglycerin, e.g., infrared, the phenoldisulisulfonic acid procedure for organic nitrates, and a column chromatographic procedure.

Gas-Liquid Chromatographic Determination of Vitamin D2 in Multiple Vitamin Tablets Containing Minerals and Vitamin E Acetate

1974 ◽  
Vol 57 (5) ◽  
pp. 1089-1091
Author(s):  
David O Edlund ◽  
Florido A Filippini ◽  
James K Datson
Keyword(s):  
Vitamin E ◽  
Chromatographic Determination ◽  
Vitamin D2 ◽  
Vitamin E Acetate ◽  
Chromatographic Procedure ◽  
Ether Solution ◽  
Liquid Chromatographic Determination ◽  
Liquid Chromatographic ◽  
Column Chromatographic

Abstract A gas-liquid chromatographic procedure used to determine vitamin D2 in multiple vitamin tablets has been modified to make it applicable for analysis of multiple vitamin tablets containing minerals and vitamin E acetate. The procedure modifications involve pre-extraction with ether, solution in an alcoholic sulfuric acid-pyridine mixture, and column chromatographic separation on phosphate-treated alumina. The modified procedure has been statistically evaluated. A 2.2% coefficient of variation and 100.3% average recovery were obtained for the samples evaluated.

scholarly journals Antinociceptive, Anti-Inflammatory, and Antipyretic Activity of Mangrove Plants: A Mini Review

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
J. A. Shilpi ◽  
M. E. Islam ◽  
M. Billah ◽  
K. M. D. Islam ◽  
F. Sabrin ◽  
...  
Keyword(s):  
Natural Products ◽  
Biological Activity ◽  
Plant Species ◽  
Active Compound ◽  
Medicinal Uses ◽  
Antipyretic Activity ◽  
Mangrove Plants ◽  
The World ◽  
Anti Inflammatory ◽  
The Web

Mangrove plants are specialised plants that grow in the tidal coasts of tropic and subtropic regions of the world. Their unique ecology and traditional medicinal uses of mangrove plants have attracted the attention of researchers over the years, and as a result, reports on biological activity of mangrove plants have increased significantly in recent years. This review has been set out to compile and appraise the results on antinociceptive, anti-inflammatory, and antipyretic activity of mangrove plants. While the Web of Knowledge, Google Scholar, and PubMed were the starting points to gather information, other pieces of relevant published literature were also adequately explored for this purpose. A total of 29 reports on 17 plant species have been found to report such activities. While 19 reports were on the biological activity of the crude extracts, 10 reports identified the active compound(s) of various chemical classes of natural products including terpenes, steroids, and flavonoids. This review finds that antinociceptive, anti-inflammatory, and antipyretic activity appears to be widespread in mangrove plants.

scholarly journals Directed aromatic functionalization in natural-product synthesis: Fredericamycin A, nothapodytine B, and topopyrones B and D

2011 ◽  
Vol 7 ◽  
pp. 1475-1485 ◽  
Author(s):  
Charles Dylan Turner ◽  
Marco A Ciufolini
Keyword(s):  
Natural Products ◽  
Biological Activity ◽  
Natural Product ◽  
Natural Product Synthesis ◽  
Fredericamycin A

This is a review of our efforts toward the synthesis of a group of natural products that display noteworthy biological activity: Fredericamycin A, nothapodytine B, and topopyrones B and D. In each case, directed aromatic functionalization methodology greatly facilitated the assembly of the key molecular subunits.

Assay of Ipecac and Its Preparations. II. Collaborative Study

1971 ◽  
Vol 54 (3) ◽  
pp. 614-616
Author(s):  
Margaret F Sharkey ◽  
Edward Smith ◽  
Joseph Levine
Keyword(s):  
Collaborative Study ◽  
Uv Absorption ◽  
Chromatographic Procedure ◽  
Standard Deviations ◽  
Column Chromatographic ◽  
Good Standard

Abstract A method for the determination of 2 major alkaloids in ipecac sirup and powdered ipecac root was subjected to collaborative study. A 4-column chromatographic procedure is used for the isolation of emetine and cephaeline, which are measured individually by UV absorption. Two commercial sirups were employed as samples. The powdered root samples were representative of the different ratios of emetine and cephaeline occurring in the different species. The collaborative results were good: Standard deviations ranged from 0.024 to 0.066 for the powdered samples and from 1.11 to 2.77 for the sirup samples. The methods have been adopted as official first action for determination of emetine and cephaeline in ipecac sirup, powdered root, and fluidextract.

Chemical and Functional Diversity of Natural Products from Plant Associated Endophytic Fungi

2009 ◽  
Vol 4 (11) ◽  
pp. 1934578X0900401 ◽  
Author(s):  
Vijay C. Verma ◽  
Ravindra N. Kharwar ◽  
Gary A. Strobel
Keyword(s):  
Natural Products ◽  
Biological Activity ◽  
Functional Diversity ◽  
Bioactive Compounds ◽  
Endophytic Fungi ◽  
Host Plants ◽  
Fungal Endophytes ◽  
Sources Identification ◽  
Naturally Occurring

This review describes examples of naturally occurring bioactive compounds obtained from fungal endophytes from various host plants. The main topics addressed are sources, identification, biological activity, biosynthesis, and ecological and chemosystematic significance of those bioactive compounds whose sources were well defined.

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