barley is a kind of cereal that contains high amounts of β-glucan. β-glucan is a major component of soluble fiber implicated in hypocholesterolemia, hypoglycemia, diabetes and heart attacks. investigations show that hull-less barley has more β-glucan than hulled barley. in this study the physical and chemical properties of hull-less barley (ehds 18), wheat (zarrin) varitiese, barley flour, and ...

Ferredoxin from Chlam ydom onas reinhardii has been purified to electrophoretic hom ogeneity by an easy and fast procedure with a high yield (25—30 mg/250 g wet weight of cells). An average molecular weight of 11800 was calculated from sedimentation coefficient (1.70 S) and Stokes radius (1.75 nm) data, sodium dodecyl sulfate-electrophoresis, and amino acid composition. A b­ sorption spectrum s...

In recent years the study of immunologically specific polysaccharides has not only contributed to the understanding of bacterial specificity (1) but has also proved of purely chemical interest because of the unusual structure of certain members of the group. Thus the specific polysaccharide of Type III pneumococcus has been shown to be a polyaldobionic acid built up of glycurono-glucose units (...

The erythrocruorin from the snail Planorbis corneus had a sedimentation coefficient, so/20,w, of 33.5 +/- 0.31 S, and a molecular weight of 1.65 x 10(6) +/- 0.04 x 10(6) by high-speed sedimentation-equilibrium ultracentrifugation. The amino acid composition and absorption spectrum of the protein are reported. A very low number of half-cystine residues was found, corresponding to 0.4 residue per...

Tyrosinase (o-diphenol: O2 oxidoreductase, EC 1.10.3.1) has been purified from a commercial lyophilized powder prepared from edible mushrooms. Specific activities toward DL-dihydroxyphenylalanine and catechol, homogeneity, molecular weight, absorption spectrum, amino acid composition, and copper content of the preparation are comparable to other purified samples of tyrosinase prepared from fres...

Durian seed is an agricultural biomass waste of durian fruit. It can be a natural plant source of non-starch polysaccharide gum with potential functional properties. The main goal of the present study was to investigate the effect of chemical extraction variables (i.e., the decolouring time, soaking temperature and soaking time) on the physicochemical properties of durian seed gum. The physicoc...

Unique physicochemical properties of Au nanomaterials make them potential star materials in biomedical applications. However, we still know a little about the basic problem of what really matters in fabrication of Au nanomaterials which can get into biological systems, especially cells, with high efficiency. An understanding of how the physicochemical properties of Au nanomaterials affect their...