Acid-resistant, nonenveloped viruses belonging to the enterovirus, reovirus, and adenovirus groups were readily concentrated on PE60, an insoluble cross-linked polyelectrolyte based on isobutylene maleic anhydride. Hydrolysis of PE60 by NaOH increased its capacity to adsorb viruses. Hydrogen ion levels played an important role in virus concentration; optimal pH levels for maximal virus adsorpti...

/ Petroleum asphaltenes are defined as the n-pentane or n-heptane insoluble but toluene soluble fraction of crude oils or petroleum residua. This operational definition is a consequence of the extremely complex structure of asphaltenes which consist of thousands of compounds containing highly aromatic cores, long chain aliphatic groups, heteroatoms (sulfur, nitrogen, and oxygen) as well as trac...

BACKGROUND Seamustard and seatangle are commonly consumed seaweeds in Korea and rich sources of non-digestible polysaccharides which possess biological activities. However anti-mutagenic and anti-cancer activities of these seaweeds under physiological condition have not been clarified yet. The objective of this study was to investigate the effect of seaweeds consumption on azoxymethane (AOM) -i...

The immunomodulatory activity of water and alcohol extracts (including its fractions) of the dried calyx of the plant was evaluated in mice. The ability of the extracts to inhibit or enhance the production of two cytokines, namely tumor necrosis factor-alpha (TNF- alpha) and interleukin-10 (IL-10), respectively, implicated as proinflammatory and antiinflammatory interleukins were also evaluated...

Rat lymph chylomicrons were treated with Pronase resulting in particles completely devoid of surface apoproteins. On re-incubation with serum, the Pronase-treated chylomicrons re-acquired, by transfer from other lipoproteins, all apoproteins except apoprotein B, which is water-insoluble and non-transferable. When two groups of rats were injected with [3H]cholesterol-labelled control or Pronase-...

Thermal damage to proteins can reduce their nutritional value. The effects of toasting time on the kinetics of hydrolysis, the resulting molecular weight distribution of 00-rapeseed meal (RSM) and the soluble and insoluble protein fractions separated from the RSM were studied. Hydrolysis was performed with pancreatic proteases to represent in vitro protein digestibility. Increasing the toasting...

The neutral salt-soluble collagen which accumulates in the tissues of animals treated with penicillamine does not differ from normal in amino acid composition, specific optical rotation, and melting temperature. It has higher intrinsic viscosity, possibly due to a contamination with higher molecular weight aggregates originating from the depolymerization of insoluble collagen. In contrast to th...

Dynamic organization of the axonal cytoskeleton was investigated by analyzing slow axonal transport of tubulin and other major cytoskeletal proteins in the motor axons of rat sciatic nerve 1-4 weeks after injection of L-35S-methionine into the anterior horn area of L3-L5 lumbar spinal cord. A large proportion (50-65%) of tubulin transported in the axon was found to be insoluble when extracted w...

The neutral salt-soluble collagen which accumulates in the tissues of animals treated with penicillamine does not differ from normal in amino acid composition, specific optical rotation, and melting temperature. It has higher intrinsic viscosity, possibly due to a contamination with higher molecular weight aggregates originating from the depolymerization of insoluble collagen. In contrast to th...