Weights Plants

HAGERMAN A E, RIEDL K M, JONES G A, SOVIK K N, RITCHARD N T, HARTZFELD P W and RIECHEL T L (1998) High molecular weight plant polyphenohcs (tannins) as biological antioxidants, J Agric Food Chem, 46, 1887-92. 

Recent advances in electrospray ionization (ESI), atmospheric-pressure chemical ionization (APCI), thermospray, and particle beam LC-MS have advanced the analyst toward the universal HPLC detector, but price and complexity are still the primary stumbling blocks. Thus, HPLC-MS remains expensive and the technology has only recently been described. Early commercial LC-MS uses particle beam and thermospray sources, but ESI and APCI interfaces now dominate. Liquid chromatography MS can represent a fast and reliable method for structural analyses of nonvolatile compounds such as phenolic compounds (36,37), especially for low-molecular-weight plant phenolics (38), but the limited resolving power of LC hinders the widespread use of its application for phenolics as compared to GC-MS. 

GC Galletti, J Eagles, FA Mellon. Analysis of low molecular weight plant phenolics by thermospray liquid chromatography/mass spectrometry. J Sci Food Agric 59 401-404, 1992. 

Element Soil Content (Weight%) Plant Ash Content/Soil Content Annual Plant Uptake (kg ha-1 yr-1) Soil Content/ Annual Plant Uptake (yrs)... 

Jako, C., A. Kumar, Y. Wei, et al. 2001. Seed-specific over-expression of an Arabidopsis cDNA encoding a diacylglycerol acyltransferase enhances seed oil content and seed weight. Plant Physiol. 126 861-874. 

HIGH MOLECULAR WEIGHT PLANT POPLYPHENOLS (TANNINS) PROSPECTIVE EUNCTIONS... 

HIGH MOLECULAR WEIGHT PLANT POL YPHENOLS Table 7.3 Antibacterial activity of polyphenols against H. pylori strains... 

High Molecular Weight Plant Polyphenols (Tannins) Prospective... 

Hagerman, A.E., Riedl, K.M., Alexander Jones, G., Sovik, K.N., Ritchard, N.T., Hartzfeld, P.W., and Riechel, T.L., High molecular weight plant polyphenolics (tannins) as biological antioxidants, J. Agric. Food Chem., 46, 1887-1892, 1998. 

T. from plants (phytotoxins) include both high- and low-molecular weight substances. Examples of the former are the lectins distributed in legumes (abrin, con-canavalin A, crotin, phasin, ricin). The low-molecular weight plant T. are more numerous and of greater diversity, including the cardiac glycosides, saponins. 

To the consumer, the most evident properties of phenolic compounds are the colors and the astringent taste they impart to foods. With few exceptions such as safrole and coumarin, most low molecular weight plant phenols have been shown to be non-toxic/non-carcinogenic in experimental animals. Further, plant phenols form a very small portion of total food intakes under normal food consumption patterns and would not be likely to have any serious toxic or antiphysiological effects. It is therefore reasonable to ask, why consider food safety of plant polyphenols Some of the reasons include ... 

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