Download A Field Guide to Western Trees: Western United States and by George A. Petrides PDF

By George A. Petrides

Этот иллюстрированный определитель включает детальные описания 387 видов, объединенных в 6 групп по внешнему сходству. forty seven цветных вкладок и текстовые описания характеризуют особенности видов, необходимые для идентификации. Цветные фотографии и 295 карт распространения дополняют видовые описания.
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Extra resources for A Field Guide to Western Trees: Western United States and Canada

Example text

If a lyophilizer is not available, the plant material has to be dried under far from ideal conditions. The sample can be dried at about 50-52°C using a forced air oven. This will hasten the process of drying, and the enzymes present in the plant sample will not have much time to react with phenolics. Drying at temperatures higher than 55°C should be avoided, since it can lead to inactivation of phenolics or could decrease their extractability in solvents and affect the quantification. The suggested procedures for collection, storage and drying of samples are given below.

Limitations of the butanolhydrochloric acid-iron assay for bound condensed tannins, Food Chern. 66 (1999) 129-133. , Determination of extractable and bound condensed tannin concentrations in forage plants, protein concentrate meals and cereal grains, J. Sci. Food Agric. 58 (1992) 321-329. , Insoluble ellagitannins in Castanea sativa and Quercus petraea woods, Phytochemistry 30 ( 1991) 775-778. , Method of estimation of proanthocyanidins based on their acid depolymerization in the presence of nucleophiles, J.

Glycoproteins from Colletptrichum graminicola that bind phenols: implications for survival and virulence of phytopathogenic fungi, Phytochemistry 76 ( 1986) 3824-3830. [97] [101] CHIQUETTE, J. , Effect of tannin on the digestibility of two isosynthetic strains of bird's-foot trefoil (Lotus corniculatus) using in vitro and in sacco techniques, Can. J. Anim. Sci. 68 (1998) 751-760. , The role of polyphenols in human health. D. Brooker), ACIAR Proceedings No. 92 (2000) 75-81. , Effect of ingestion of hydrolysable tannins in Terminalia oblongata on digestion in sheep fed Stylosanthes hamata, Aust.

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