Results 201 to 210 of about 22,510 (245)

Does the degree of pectin esterification influence aluminium sorption by the root apoplast?

Plant and Soil, 2008
This study investigates the influence of the degree of pectin esterification (DE) on the sorption of aluminium (Al) by plant roots. Ca-pectates, with varying degrees of esterification, are major constituents of the soil–root interface and of the root apoplast.
Claudio Marzadori
exaly   +2 more sources

Determination of the Esterification Degree of Polygalacturonic Acid

Russian Journal of Applied Chemistry, 2001
The number of free and esterified carboxy groups of polygalacturonic acid was determined by conductometric titration.
A. M. Bochek, N. M. Zabivalova, G. A. Petropavlovskii   +2 more
openaire   +1 more source

Solution characterization of starch nicotinates with different degrees of esterification

Biomaterials, 1981
A series of starch-nicotinic acid copolymers with a degree of esterification ranging from about 15% to about 90% was prepared, and the stability in solution of two representative samples of the series was tested. The variation of some physico-chemical characteristics in the series was examined by solubility tests, viscometry and refractometry, and ...
L, Rusconi, A, Pavan, P, Ferruti
openaire   +2 more sources

Study of Konjac Glucomannan Esterification with Dicarboxylic Anhydride and Effect of Degree of Esterification on Water Absorbency

Key Engineering Materials, 2012
Dicarboxylic anhydride esterified Konjac glucomannan (DCKGM) was prepared to reduce the unusual water absorbency of native Konjac Glucomannan (KGM). The dependence of degree of substitution (DS) on the reaction conditions and influence of the DS on water absorbency were studied.
Ben Chao Han, Chi Zhang, Xue Yao, Xue Gang Luo   +3 more
openaire   +1 more source

Upgrading of Bio-oil by Catalytic Esterification and Determination of Acid Number for Evaluating Esterification Degree

Energy & Fuels, 2010
Bio-oil was upgraded by catalytic esterification over the selected catalysts of 732- and NKC-9-type ion-exchange resins. The determination of the acid number by potentiometric titration was recommended by the authors to quantify the total content of organic acids in bio-oil and also to evaluate the esterification degree of bio-oil in the process of ...
Jin-Jiang Wang, Jie Chang, Juan Fan
openaire   +1 more source

Preventive effects of pectin with various degrees of esterification on ulcerative colitis in mice

Food & Function, 2020
Low esterified or amidated low esterified pectin displayed better preventive effects on acute colitis over high esterified pectin.
Linlin Fan, Sheng Zuo, Huizi Tan, Jielun Hu, Jiaobo Cheng, Quanyong Wu, Shaoping Nie   +6 more
openaire   +2 more sources

Impact of pectin with various esterification degrees on the profiles of gut microbiota and serum metabolites

Applied Microbiology and Biotechnology, 2022
Colitis is generally affected by multiple factors, including the dysbiosis of intestinal microbiota, and may affect organs outside colon through circulation. Pectin, which is an edible polysaccharide widely present in plant cell walls, has been proved in our previous study to possess preventive potentials against acute ulcerative colitis, especially ...
Quanyong Wu, Linlin Fan, Huizi Tan, Yanli Zhang, Qingying Fang, Jingrui Yang, Steve W. Cui, Shaoping Nie   +7 more
openaire   +2 more sources

Spectrophotometic determination of the degree of esterification of cellulose xanthate in viscose

Fibre Chemistry, 1971
The spectrophotometric method permits a rapid determination of the value of γCS2 for xanthate in viscose. The duration of such a determination is 20–30 min. The method is recommended for the analysis of viscose under production conditions and for investigational work.
I. N. Kotomina, A. T. Serkov
openaire   +1 more source

Effect of degree of esterification on viscosity and gelation behavior of pectin

Journal of Colloid Science, 1953
Abstract Pectin was esterified with diazomethane so that degradation did not occur. The intrinsic viscosity was found to decrease with increasing degree of esterification. Maximum shear modulus of high-solids content gels containing 0.3 % pectin of nearly constant chain length was obtained near a degree of esterification of 40%.
E.L Pippen, T.H Schultz, H.S Owens
openaire   +1 more source

Fast determination of the degree of methyl esterification of pectins by head-space GC

Food Hydrocolloids, 2004
A new, fast method for the quantitative analysis of methoxyl groups in pectin using head-space gas chromatography (HS-GC) has been developed. With this method, results were obtained which were in reasonable agreement with the conventional HPLC method, and the reproducibility of the measurements is high.
Huisman, M.M.H., Oosterveld, A., Schols, H.A.   +2 more
openaire   +1 more source