Preface to the Princeton Landmarks in Biology Edition vii Preface xi Symbols Used xiii 1. The Importance of Islands 3 2. Area and Number of Speicies 8 3. Further Explanations of the Area-Diversity Pattern 19 4. The Strategy of Colonization 68 5. Invasibility and the Variable Niche 94 6. Stepping Stones and Biotic Exchange 123 7. Evolutionary Changes Following Colonization 145 8. Prospect 181 Glossary 185 References 193 Index 201

The Theory of Island Biogeography

Advances in flavonoid research since 1992.

The biochemistry and medical significance of the flavonoids.

Total equivalent antioxidant capacity (TEAC) and phenolic content of 26 common spice extracts from 12 botanical families were investigated. Qualitative and quantitative analyses of major phenolics in the spice extracts were systematically conducted by reversed-phase high-performance liquid chromatography (RP-HPLC). Many spices contained high levels of phenolics and demonstrated high antioxidant capacity. Wide variation in TEAC values (0.55−168.7 mmol/100 g) and total phenolic content (0.04−14.38 g of gallic acid equivalent/100 g) was observed. A highly positive linear relationship (R2 = 0.95) obtained between TEAC values and total phenolic content showed that phenolic compounds in the tested spices contributed significantly to their antioxidant capacity. Major types of phenolic constituents identified in the spice extracts were phenolic acids, phenolic diterpenes, flavonoids, and volatile oils (e.g., aromatic compounds). Rosmarinic acid was the dominant phenolic compound in the six spices of the family La...

Antioxidant Capacity of 26 Spice Extracts and Characterization of Their Phenolic Constituents

https://cyberleninka.org/article/n/1146770.pdf

Effect of extraction solvent on total phenol content, total flavonoid content, and antioxidant activity of Limnophila aromatica

Horseradish peroxidase: a modern view of a classic enzyme

Flavonoids and their glycosides, including anthocyanins

Isoflavonoids of the leguminosae

It has been shown recently that Trp171 of lignin peroxidase (LiP) is hydroxylated at the Cβ position [Blodig, W., Doyle, W. A., Smith, A. T., Winterhalter, K., Choinowski, T., and Piontek, K. (1998) Biochemistry 37, 8832−8838]. Comparative experiments, carried out on both wild-type fungal and recombinant LiP isoenzyme H8 (LiPH8*), indicate that the process of hydroxylation is autocatalytic and that Trp171 may be implicated in catalysis. The role of this residue has therefore been examined using site-directed mutagenesis to obtain recombinant enzymes with Trp171 substituted by Phe or Ser (W171F and W171S LiPH8*, respectively). The wild-type recombinant enzyme (LiPH8*) was analyzed in solution using 1H NMR spectroscopy and its integrity confirmed prior to the kinetic and spectroscopic characterization of LiPH8* mutants. A charge neutralization mutation in the “classical heme edge” substrate access channel of LiP, in which Glu146 was substituted by Gly (E146G LiPH8*), showed substantial activity with respect...

Nigel C. Veitch

Papers

Horseradish peroxidase: a modern view of a classic enzyme

Flavonoids and their glycosides, including anthocyanins

Isoflavonoids of the leguminosae

Two Substrate Interaction Sites in Lignin Peroxidase Revealed by Site-Directed Mutagenesis†

Synthesis of cicerfuran, an antifungal benzofuran, and some related analogues