منابع مشابه
Enzymatic Bleaching of Wood Pulp
The dark colour of kraft pulp after the wood chips have been heated at high temperature with NaOH solution is caused by lignin (a complex phenolic polymer) still attached to the cellulose fibres. Traditionally this pulp is treated with chlorine to bleach the pulp to make it suitable for paper making. Unfortunately this leads to the formation of some potentially toxic chlorophenolic compounds of...
متن کاملRapid Enzymatic Degradation
The effect of plasma on degradation of human growth hormonereleasing hormone (GRH) was examined in vitro and in vivo using high performance liquid chromatography (HPLC), radioimmunoassay (RIA), and bioassay. When GRH(1-44)-NH2 was incubated with human plasma, the t1/2 of total GRH immunoreactivity was 63 min (RIA). However, HPLC revealed a more rapid disappearance (t1/2, 17 min) ofGRH(144)-NH2 ...
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ژورنال
عنوان ژورنال: Wood Preservation
سال: 1988
ISSN: 0287-9255,1884-0116
DOI: 10.5990/jwpa.14.2