| Journal Articles: 6 results |
|
|
Kinetic Analysis of Amylase Using Quantitative Benedict's and Iodine Starch Reagents Beverly Cochran, Deborah Lunday, and Frank Miskevich
This laboratory emphasizes that enzymes mediate the conversion of a substrate into a product and that either the concentration of product or reactant may be used to follow the course of a reaction. It does so by using an inexpensive scanner and open-source image analysis software to quantify amylase activity through the breakdown of starch and the appearance of glucose.
Cochran, Beverly; Lunday, Deborah; Miskevich, Frank. J. Chem. Educ. 2008, 85, 401.
Biosynthesis |
Carbohydrates |
Catalysis |
Enzymes |
Food Science |
Nutrition |
Quantitative Analysis |
UV-Vis Spectroscopy
|
Isolation of Betulin and Rearrangement to Allobetulin Brian Green, Michael D. Bentley, Bong Y. Chung, Nicholas G. Lynch, and Bruce L. Jensen
Betulin is obtained by extraction from birch bark and converted to allobetulin. Both compounds display 1H NMR spectra that include axialequatorial coupling characteristic of a C3-alcohol, conformational analysis by the use of dihedral angles and the Karplus equation, coupling patterns caused by diastereotopic protons and long-range interactions, and chemical shift values that are influenced by electronegativity and stereochemistry.
Green, Brian; Bentley, Michael D.; Chung, Bong Y.; Lynch, Nicholas G.; Jensen, Bruce L. J. Chem. Educ. 2007, 84, 1985.
Biosynthesis |
IR Spectroscopy |
Microscale Lab |
NMR Spectroscopy |
Synthesis |
Natural Products
|
Nature's Way To Make the Lantibiotics Heather A. Relyea and Wilfred A. van der Donk
This article focuses on one class of antimicrobial compounds, the lantibiotics, and discusses their biosynthetic pathways as well as their molecular mode of action. In the course of the review, the meaning of the terms regio-, chemo-, and stereoselectivity are discussed.
Relyea, Heather A.; van der Donk, Wilfred A. J. Chem. Educ. 2006, 83, 1769.
Applications of Chemistry |
Bioorganic Chemistry |
Biotechnology |
Biosynthesis |
Catalysis |
Drugs / Pharmaceuticals |
Proteins / Peptides
|
Gifts from Mother Earth—The Good, the Bad, and the Ugly Sabine Heinhorst and Gordon C. Cannon
Recent articles from the journal Nature that deal with good, bad, and ugly gifts from Mother Earth are described.
Heinhorst, Sabine; Cannon, Gordon C. J. Chem. Educ. 2006, 83, 196.
Biosynthesis |
Biotechnology |
Natural Products |
Nutrition |
Plant Chemistry |
Polymerization |
Proteins / Peptides
|
On the Formation of Peptide Bonds Stojanoski, Kiro; Zdravkovski, Zoran
In an attempt to simplify the concept of peptide bond formation, many textbooks misrepresent the energy requirement that is necessary for peptide bonds to form.
Stojanoski, Kiro; Zdravkovski, Zoran J. Chem. Educ. 1993, 70, 134.
Amino Acids |
Biosynthesis |
Equilibrium |
Bioenergetics
|
Ethylene-An unusual plant hormone Ainscough, Eric W.; Brodie, Andrew M.; Wallace, Anna L.
This article discusses some of the early historical observations about this ethylene, the production and concentration of ethylene in plants, the ethylene biosynthesis pathway, and the possible site of ethylene action.
Ainscough, Eric W.; Brodie, Andrew M.; Wallace, Anna L. J. Chem. Educ. 1992, 69, 315.
Alkenes |
Plant Chemistry |
Biosynthesis
|
|
