The contribution of aliphatic-rich plant biopolymer to sorption of hydrophobic organic compounds is significantly important because of their preservation and accumulation in the soil environment, but sorption mechanism is still not fully understood. In this study, sorption of 1-naphthol by plant cuticular fractions was examined to better understand the contributions of respective fraction. Towa...

The key organic constituents of marine macroaggregates (macrogels) of prevalently phytoplankton origin, periodically occurring in the northern Adriatic Sea, are proteins, lipids and especially polysaccharides. In this article, the reactivity of various macroaggregate fractions in relation to their composition in order to decode the potentially »bioavailable« fractions is summarized and discusse...

We have previously shown that gingipain activity in Porphyromonas gingivalis is modulated by the unique vimA and vimE genes. To determine if these genes had a similar phenotypic effect on protease maturation and activation, isogenic mutants defective in those genes were further characterized. Western blot analyses with antigingipain antibodies showed RgpA-, RgpB-, and Kgp-immunoreactive bands i...

The bark of Goupia glabra trees grown in a native forest area in the Amazon region of Brazil was anatomically and chemically characterised for potential use as a chemical source for bio-refineries. The bark is silvery-grey to reddish-grey, with a scaly rhytidome composed of 2 to 3 periderms with a small phellem content. The phloem has abundant sieve tube members and a conspicuous presence of sc...

A water soluble acidic heteropolysaccharide named wAF was isolated from Auricularia auricula-judae. It composed of a backbone of α(1→3)-linked D-mannopyranose residues. WAF fractions exhibited strong inhibition against Acinar cell carcinoma proliferation in vitro test. It significantly inhibited tumour growth in dose-dependent way in BALB/c mice. Moreover, the enhancement ratios of mice body we...

1. Discs of tobacco leaf lamina were floated on media containing D-[U-14C]glucose. Glucose uptake was mainly through the cut edges, and diffusion through the veins and intracellular spaces was slow. 2. Radioactivity was detected in all polysaccharide fractions extracted from the discs, including those associated with the wall. 3. Plasmolysis in sorbitol or KCL decreased the incorporation of rad...

A laboratory-scale membrane bioreactor (MBR) and nanofiltration (NF) hybrid system has been built to investigate effects of changes in characteristics of effluent organic matter by the MBR on fouling characteristics of the NF membranes. Large amounts of polysaccharide-like substances with small molecular weight and strong fluorescence intensity at the excitation wavelength of 230nm and the emis...

We are unable to confirm the observations reported by Cole and Favour that passive transfer of plasma fractions containing alpha globulin (IV + V or IV-10) from tuberculin-sensitive guinea pigs confers delayed sensitivity to tuberculoprotein upon normal animals. In guinea pigs with chronic cervical adenitis due to infection with group C hemolytic streptococci, injection of fraction IV + V and r...

Mouse mastocytoma cells grown in suspension culture produce chondroitin 4-sulphate. A Golgi-apparatus-enriched fraction from these cells was prepared and examined for chondroitin-synthesizing activity. When Golgi-apparatus-enriched fractions were incubated with UDP-[14C]glucuronic acid and UDP-N-acetylgalactosamine, they demonstrated a greater than 13-fold increase in chondroitin-synthesizing a...

Two polysaccharide fractions isolated from Hypnea musciformis after room temperature- and hot water extraction, soluble after KCl precipitation of the more abundant carrageenans, were subfractionated by ion-exchange chromatography eluting with increasing concentrations of NaCl. The lowest NaCl concentration (0.2M) eluted agarans. The dl-hybrids (or mixtures) eluted at intermediate concentration...