Preparation of high solid content oxidized starch by acid pretreatment–H2O2 oxidation and its performance as the ligand in zirconium tanning
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Glycosidic bond
In this experiment,the polysaccharide was extracted and purified from Toona sinensis Roem.We measured and purified the number of the polysaccharide protein,made an anti-oxide experiment for water-soluble polysaccharide and the purified polysaccharide,and measured the effect of eliminate of free radical for the different density of polysaccharide.The result shows that the composition of the polysaccharide was Xyl,Ara,Rha,Gal,Glc,Gal-A,and Man,and proportion of mol:1.0 ∶2.8 ∶2.6 ∶2.6 ∶2.0 ∶7.6 ∶1.6.A result obtained from anti-oxide experiment shows that different density of water-soluble polysaccharide and purified polysaccharide can eliminate free radical·OH and anions.Furthermore,the effect of purified polysaccharide is beyond of water-soluble polysaccharide.The water-soluble polysaccharide can eliminate R and the purified polysaccharide can not eliminate it.
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Two-hundred and twenty-four new atomic zirconium lines are found in the region between 6100 and 6500 A. Fifty-four are attributed to transitions between previously determined terms of neutral zirconium, Zr i. One is attributed to known terms of singly ionized zirconium, Zr ii.
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[Objective]To study the effects of wolfberry polysaccharides and fungus polysaccharides on blood lipid levels in mice. [Method]72healthy Kunming mice( 7 weeks old) were divided into six groups randomly,namely the control group,high-fat group,high fat + high concentration wolfberry polysaccharide group( 50 mg /( kg·d)),fat + low concentration wolfberry polysaccharide group( 25 mg /( kg·d)),fat +high concentration fungus polysaccharide group( 100 mg /( kg·d)),fat + low concentration fungus polysaccharide group( 50 mg /( kg·d)).The serum lipids were measured 4 weeks after the mice fed with different doses of polysaccharide. [Result]Wolfberry polysaccharides and fungus polysaccharides were able to significantly reduce serum LDL,TG and TC levels and increased HDL levels of the fat mouse( P 0. 05). [Conclusion] The group with wolfberry polysaccharides and fungus polysaccharides may be considered to be beneficial to serum lipid level,and it was suggested that the high wolfberry polysaccharides and fungus polysaccharides diet affect more favorably on cardiovascular disease.
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Phthalonitrile
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Polysaccharides are polymers of monosaccharide units joined together by glycosidic bonds.Studies have shown that polysaccharide exhibit significant biological activities.In this review,the biological activities of immunomodulating, antitumor,cardiovascular system disease,antiviral,antioxidation,anti-inflammatory and radioprotective of polysaccharides are reviewed.
Glycosidic bond
Monosaccharide
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This chapter contains sections titled: Introduction Classification and Structure of Polysaccharides Fungal Polysaccharides Bacterial Polysaccharides Algal Polysaccharides Microbial Polysaccharides Versus Plant Polysaccharides Biological Activities of Microbial Polysaccharides Microbial Polysaccharides Production Microbial Polysaccharides Recovery Conclusion
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