Gel formation and low-temperature intramolecular conformation transition of a triple-helical polysaccharide lentinan in water

Yangyang ZhangLina Zhang


The gelation behavior of the triple-helical polysaccharide lentinan fractions having different molecular weights in water at 25 degrees C were studied by using a rheometer. The analysis of concentration and molecular weight dependence of shear stress and shear viscosity showed that aqueous lentinan is a typical shear-thinning fluid, possessing potential as a viscosity control agent, and that a weak gel with entangled network structure formed. The dynamic oscillatory behavior of lentinan in the temperature range of 1-15 degrees C was also investigated by rheologic method. The storage modulus G' and complex viscosity eta* increased first with decreasing temperature, and underwent a maximum centered at 7-9 degrees C, and then decreased with further decreasing temperature. This abnormal phenomenon was ascribed to formation of rigid structure in the gel state, which was confirmed by the experimental results from micro-DSC. The micro-DSC curves showed that an endothermic peak appeared at 7-9 degrees C for lentinan in water upon heating, which was attributable to the intramolecular order-disorder structure transition similar to triple-helical polysaccharide schizophyllan. Namely, at lower temperature, the side glucose residues of lent...Continue Reading


Jan 1, 1988·Immunopharmacology and Immunotoxicology·G PéterY Kaneko
Oct 1, 1982·Immunopharmacology·J P FruehaufR B Herberman
Jan 1, 1993·Cancer Immunology, Immunotherapy : CII·A LadányiK Lapis
Dec 29, 1998·The Journal of Biological Chemistry·Y TianM A Gallo
Dec 24, 2003·Biopolymers·Yapeng Fang, Katsuyoshi Nishinari

❮ Previous
Next ❯


Mar 19, 2013·Carbohydrate Polymers·Motonari ShibakamiMasahiro Hayashi
Sep 9, 2015·Food & Function·Xiaojun Huang, Shaoping Nie
Nov 19, 2013·Critical Reviews in Food Science and Nutrition·Xiaofei XuXuewu Zhang
Jun 12, 2009·Critical Reviews in Microbiology·S SoltanianP Bossier
Sep 29, 2020·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Fengzhi LyuLina Zhang
Aug 7, 2017·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Qingye LiuLina Zhang
Jul 17, 2009·The Journal of Physical Chemistry. B·Xiaohua WangYanwei Ding

❮ Previous
Next ❯

Related Concepts

Trending Feeds


Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.


Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.


Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.