Soluble decomposition products in aged vegetable-tanned leathers
نویسندگان
چکیده
منابع مشابه
Tannin fingerprinting in vegetable tanned leather by solid state NMR spectroscopy and comparison with leathers tanned by other processes.
Solid state ¹³C-NMR spectra of pure tannin powders from four different sources--mimosa, quebracho, chestnut and tara--are readily distinguishable from each other, both in pure commercial powder form, and in leather which they have been used to tan. Groups of signals indicative of the source, and type (condensed vs. hydrolyzable) of tannin used in the manufacture are well resolved in the spectra...
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Yeso sika deer is one of the red deer species inhabited Hokkaido and exhibits seasonal molt twice a year. We investigated seasonal variations of morphological and biochemical characteristics of yeso sika deer skin as well as physical, chemical and morphological properties of its vegetable tanned leather. Morphologically, in spring and autumn, which is just active phase of molting cycle, yeso si...
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They are used and known from the tanners for quite two thousand years (1) by different civilization (Mesopotamian, precolombian...) and till the XIX century mainly into the form of raw, untreated material like bark. Than chemical companies start to increase he yield of tan content by proceeding into extraction with autoclave and spraydrying leading to extract such as Chestnut or Mimosa having m...
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Since natural antioxidants present increasing interest for food industry due to their beneficial effect on health, new potential sources have been screened among edible aromatic plants and a microalgae, Spirulina platensis. The determination was performed after optimising a previously validated method, because important differences have been found among values described in literature for tocoph...
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ژورنال
عنوان ژورنال: Journal of Research of the National Bureau of Standards
سال: 1936
ISSN: 0091-0635
DOI: 10.6028/jres.017.006