Chemical characterisation and gelling properties of cell wall polysaccharides from species of Ulva (Ulvales, Chlorophyta)

Hydrobiologia ◽  
1996 ◽  
Vol 326-327 (1) ◽  
pp. 473-480 ◽  
Author(s):  
Marc Lahaye ◽  
Bimalendu Ray ◽  
Stephanie Baumberger ◽  
Bernard Quemener ◽  
Monique A. V. Axelos
Keyword(s):  
Cell Wall ◽  
Cell Wall Polysaccharides ◽  
Gelling Properties

scholarly journals Therapeutic Uses of Red Macroalgae

Molecules ◽  
2020 ◽  
Vol 25 (19) ◽  
pp. 4411
Author(s):  
Mona M. Ismail ◽  
Badriyah S. Alotaibi ◽  
Mostafa M. EL-Sheekh
Keyword(s):  
Cell Wall ◽  
Algal Species ◽  
Dry Weight ◽  
Sulfated Polysaccharides ◽  
Nutrient Concentrations ◽  
Red Seaweed ◽  
Bioactive Constituents ◽  
Cell Wall Polysaccharides ◽  
Red Macroalgae ◽  
Gelling Properties

Red Seaweed “Rhodophyta” are an important group of macroalgae that include approximately 7000 species. They are a rich source of structurally diverse bioactive constituents, including protein, sulfated polysaccharides, pigments, polyunsaturated fatty acids, vitamins, minerals, and phenolic compounds with nutritional, medical, and industrial importance. Polysaccharides are the main components in the cell wall of red algae and represent about 40–50% of the dry weight, which are extensively utilized in industry and pharmaceutical compounds, due to their thickening and gelling properties. The hydrocolloids galactans carrageenans and agars are the main red seaweed cell wall polysaccharides, which had broad-spectrum therapeutic characters. Generally, the chemical contents of seaweed are different according to the algal species, growth stage, environment, and external conditions, e.g., the temperature of the water, light intensity, nutrient concentrations in the ecosystem. Economically, they can be recommended as a substitute source for natural ingredients that contribute to a broad range of bioactivities like cancer therapy, anti-inflammatory agents, and acetylcholinesterase inhibitory. This review touches on the main points of the pharmaceutical applications of red seaweed, as well as the exploitation of their specific compounds and secondary metabolites with vital roles.

Chemical characterisation and gelling properties of cell wall polysaccharides from species of Ulva (Ulvales, Chlorophyta)

1996 ◽  
pp. 473-480
Author(s):  
Marc Lahaye ◽  
Bimalendu Ray ◽  
Stéphanie Baumberger ◽  
Bernard Quemener ◽  
Monique A. V. Axelos
Keyword(s):  
Cell Wall ◽  
Cell Wall Polysaccharides ◽  
Gelling Properties

Relationships between Soybean Seed Cell Wall Polysaccharides, Yield, and Seed Traits

Crop Science ◽  
2003 ◽  
Vol 43 (2) ◽  
pp. 571 ◽  
Author(s):  
S. K. Stombaugh ◽  
J. H. Orf ◽  
H. G. Jung ◽  
D. A. Somers
Keyword(s):  
Cell Wall ◽  
Soybean Seed ◽  
Seed Traits ◽  
Cell Wall Polysaccharides ◽  
Seed Cell

scholarly journals Plant Cell Wall Hydration and Plant Physiology: An Exploration of the Consequences of Direct Effects of Water Deficit on the Plant Cell Wall

Plants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1263
Author(s):  
David Stuart Thompson ◽  
Azharul Islam
Keyword(s):  
Cell Wall ◽  
Water Content ◽  
Bacterial Cellulose ◽  
Plant Cell ◽  
Cell Walls ◽  
Plant Cell Wall ◽  
Plant Cell Walls ◽  
Cell Wall Polysaccharides ◽  
Degree Of Hydration ◽  
Cellulose Composites

The extensibility of synthetic polymers is routinely modulated by the addition of lower molecular weight spacing molecules known as plasticizers, and there is some evidence that water may have similar effects on plant cell walls. Furthermore, it appears that changes in wall hydration could affect wall behavior to a degree that seems likely to have physiological consequences at water potentials that many plants would experience under field conditions. Osmotica large enough to be excluded from plant cell walls and bacterial cellulose composites with other cell wall polysaccharides were used to alter their water content and to demonstrate that the relationship between water potential and degree of hydration of these materials is affected by their composition. Additionally, it was found that expansins facilitate rehydration of bacterial cellulose and cellulose composites and cause swelling of plant cell wall fragments in suspension and that these responses are also affected by polysaccharide composition. Given these observations, it seems probable that plant environmental responses include measures to regulate cell wall water content or mitigate the consequences of changes in wall hydration and that it may be possible to exploit such mechanisms to improve crop resilience.

scholarly journals PUL-Mediated Plant Cell Wall Polysaccharide Utilization in the Gut Bacteroidetes

2021 ◽  
Vol 22 (6) ◽  
pp. 3077
Author(s):  
Zhenzhen Hao ◽  
Xiaolu Wang ◽  
Haomeng Yang ◽  
Tao Tu ◽  
Jie Zhang ◽  
...  
Keyword(s):  
Cell Wall ◽  
Microbial Community ◽  
Gut Microbiota ◽  
Plant Cell ◽  
Plant Cell Wall ◽  
Cell Wall Polysaccharide ◽  
Prominent Feature ◽  
Cell Wall Polysaccharides ◽  
Gut Microbial Community

Plant cell wall polysaccharides (PCWP) are abundantly present in the food of humans and feed of livestock. Mammalians by themselves cannot degrade PCWP but rather depend on microbes resident in the gut intestine for deconstruction. The dominant Bacteroidetes in the gut microbial community are such bacteria with PCWP-degrading ability. The polysaccharide utilization systems (PUL) responsible for PCWP degradation and utilization are a prominent feature of Bacteroidetes. In recent years, there have been tremendous efforts in elucidating how PULs assist Bacteroidetes to assimilate carbon and acquire energy from PCWP. Here, we will review the PUL-mediated plant cell wall polysaccharides utilization in the gut Bacteroidetes focusing on cellulose, xylan, mannan, and pectin utilization and discuss how the mechanisms can be exploited to modulate the gut microbiota.

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