HISTORICAL. MANY workers have from time to time investigated Chondrus crispus, but of recent years the most exhaustive work has been done by Sebor. The presence of galactose had been established by Fluckiger and Obermayer [1868], and Bente [1875, 1876] had found among the products of the action ,f acid upon carrageen levulinic acid and a sugar, which showed little or no optical activity. Haedic...

marshmallow is a medicinal plant containing mucilage polysaccharides and various phenolic acids. boron (b) is an essential micronutrient whose necessity for plant growth and development has been attributed to its role in cell wall pectin network and maintenance of integrity and performance of membranes. the present study was aimed to investigate the effects of different concentrations of b (0.0...

The rhizosphere is one of the major components in soil–plant–atmosphere continuum which controls flow water from soil into roots. Plant roots release mucilage capable altering physio-chemical properties this region. Here, we showed how impacted on hydraulic properties, using simple experiments. An artificial rhizosphere, treated or not with mucilage, was placed a sample and suction applied to m...

A neutral polysaccharide (yield 0.5%) has been extracted and isolated from the leaves of Bryophyllum pinnatum with 1% Acetic acid consisting of D-Galactose and L-arabinose in the Molar ratio of 2:4:1, Systematic chemical and spectral analysis for structural elucidation of the mucilage showed that it may be designated as "Arabinogalactan"

the aim of this work was to optimize the coagulation-flocculation (cf) process applied tomunicipal wastewaters (ww). optimization of cf was performed to minimize chemical oxygen demand(cod), turbidity, sludge produced, and some metals in sludge. a box-behnken design was used to evaluate the effects and interactions of three factors such as type of biopolymer (guar, mesquite seed gum and opuntia...

Seasonal accumulation of carbon (C)-rich dissolved organic matter (DOM) recurs in many marine environments (Bjørnsen et al., 1989; Carlson et al., 1994) including some in the Mediterranean and Adriatic Sea (Copin-Montegut and Avril, 1993; Pettine et al., 1999; Tepić et al., 2000). In some cases decoupling of production and utilization with a net accumulation of DOM may be sustained on time scal...

The freshwater cyanobacteria, Microcystis sp., commonly form large colonies with bacteria embedded in their mucilage. Positive and negative interactions between Microcystis species and their associated bacteria have been reported. However, the potential role of bacteria in the production and degradation of cyanobacterial secondary metabolites has not been investigated. In this study, a Microcys...