Results 11 to 20 of about 1,583,259 (269)

Effect of Microwave Plasma Pre-Treatment on Cotton Cellulose Dissolution

open access: yesMolecules, 2022
The utilization of cellulose to its full potential is constrained by its recalcitrance to dissolution resulting from the rigidity of polymeric chains, high crystallinity, high molecular weight, and extensive intra- and intermolecular hydrogen bonding ...
Shaida S. Rumi   +3 more
doaj   +1 more source

Structure-Functional Activity Relationship of β-Glucans From the Perspective of Immunomodulation: A Mini-Review

open access: yesFrontiers in Immunology, 2020
β-Glucans are a heterogeneous group of glucose polymers with a common structure comprising a main chain of β-(1,3) and/or β-(1,4)-glucopyranosyl units, along with side chains with various branches and lengths.
Biao Han   +5 more
doaj   +1 more source

Why Chain Length of Hyaluronan in Eye Drops Matters

open access: yesDiagnostics, 2020
The chain length of hyaluronan (HA) determines its physical as well as its physiological properties. Results of clinical research on HA eye drops are not comparable without this parameter.
Wolfgang G.K. Müller-Lierheim
doaj   +1 more source

The Effects of Reaction Variables on Solution Polymerization of Vinyl Acetate and Molecular Weight of Poly(vinyl alcohol) Using Taguchi Experimental Design [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2009
Poly(vinyl acetate) is synthesized via solution polymerization, and then it is converted to poly(vinyl alcohol) by alkaline alcoholysis. The aim of the work study was to investigate statistically the  influence of reaction variables in vinyl acetate ...
M.H. Navarchian, S. Mousazadeh
doaj   +1 more source

Radical scavenging activity of crude polysaccharides from Camellia sinensis [PDF]

open access: yesArchives of Biological Sciences, 2011
A preparation of crude polysaccharides (TPS) was isolated from Camellia sinensis by precipitation and ultrafiltration. TPS1, TPS2, and TPS3 had molecular weights of 240, 21.4, and 2.46 kDa, respectively.
Yang Fan, Yang Zhiwei, Xiao Jianbo
doaj   +1 more source

Molecular Weight of Melanin [PDF]

open access: yesNature, 1947
A METHOD of obtaining protein macro-molecules in crystalline form by the use of heparin has been described by Cohen1. As melanin is generally believed to have a high molecular weight, an attempt has been made to crystallize it by Cohen's method, using ethylene chlorhydrin as solvent.
openaire   +2 more sources

Microbial Conversion of Cheese Whey to Polyhydroxybutyrate (PHB) via Statistically Optimized Cultures

open access: yesFermentation, 2023
The intended circular economy for plastics envisages that they will be partially replaced by bio-based polymers in the future. In this work, the natural polyester polyhydroxybutyrate (PHB) was produced by Azohydromonas lata using cheese whey (CW) as a ...
Giannis Penloglou   +2 more
doaj   +1 more source

THE MOLECULAR WEIGHT OF ANTIBODIES [PDF]

open access: yesJournal of Experimental Medicine, 1939
1. Highly purified preparations of homogeneous antibody can be made by the salt dissociation methods (6, 7) without any change in sedimentation due to the method of purification. 2. Antibodies prepared from sera of various animal species fall into two groups as regards molecular weight; in one group cow, horse, and pig, a heavy molecule ...
openaire   +2 more sources

Synthesis of Prussian Blue-Containing Polymeric Nanocapsules via Interfacial Confined Coordination in Crosslinked Miniemulsion

open access: yesNanomaterials
Herein, we describe a versatile synthetic strategy for constructing Prussian Blue (PB)-coated polymeric nanocapsules (PB@nanocapsules) with tunable sizes and controlled PB loading.
Lin Wu   +4 more
doaj   +1 more source

Effect of Various Temperatures on Bletillae Rhizoma Polysaccharide Extraction and Physicochemical Properties

open access: yesApplied Sciences, 2018
Six fractional polysaccharides were prepared by water extraction and alcohol precipitation under controlled temperature from bletillae rhizoma, a traditional Chinese medicine.
Xiaoyan Long   +4 more
doaj   +1 more source

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