The preparation and characterisation of a series of chemically modified potato starches

JM Fang, PA Fowler, J Tomkinson, CAS Hill - Carbohydrate polymers, 2002 - Elsevier
A range of substituted starches has been prepared at moderate temperature (≤90C) from
gelatinised potato starch by treatment in lithium chloride/N,N-dimethylacetamide (DMAC) …

Comparative study of hemicelluloses from rice straw by alkali and hydrogen peroxide treatments

RC Sun, J Tomkinson, PL Ma, SF Liang - Carbohydrate Polymers, 2000 - Elsevier
First extraction of the dewaxed rice straw with 1% NaOH at 55C for 2h and then following
treatment with 0.0, 0.5, 1.0, 2.0, 3.0, 4.0 and 5.0% hydrogen peroxide at 45C for 12h at pH 11.5 …

The relationship between digit ratio (2D: 4D) and muscular fitness: A systematic review and meta‐analysis

BE Pasanen, JM Tomkinson, TJ Dufner… - American journal of …, 2022 - Wiley Online Library
Background Digit ratio (2D:4D), a marker of prenatal testosterone exposure, is a weak negative
correlate of sports/athletic/fitness performance. While numerous studies have examined …

Characterization of hemicelluloses obtained by classical and ultrasonically assisted extractions from wheat straw

RC Sun, J Tomkinson - Carbohydrate Polymers, 2002 - Elsevier
The extractability of the wheat straw hemicelluloses was investigated using extraction method
with and without application of ultrasonic irradiation in 0.5M KOH aqueous solution. The …

[HTML][HTML] Comparative study of lignins isolated by alkali and ultrasound-assisted alkali extractions from wheat straw

RC Sun, J Tomkinson - Ultrasonics Sonochemistry, 2002 - Elsevier
Treatment of the dewaxed wheat straw with 0.5 M KOH at 35C for 2.5 h without ultrasonic
irradiation and with ultrasound assistance for 5, 10, 15, 20, 25, 30, and 35 min resulted in a …

Physico-chemical and structural characterization of hemicelluloses from wheat straw by alkaline peroxide extraction

RC Sun, J Tomkinson, YX Wang, B Xiao - Polymer, 2000 - Elsevier
The treatment of wheat straw with 2% H 2 O 2 at 50C and pH 11.5 for 4–30h or with 2% H 2
O 2 –0.05% anthraquinone at 50C and pH 11.5 for 4.5h resulted in the release of 79–86% of …

Hemicelluloses and their derivatives

RC Sun, XF Sun, J Tomkinson - 2004 - ACS Publications
Hemicelluloses are a large group of polysaccharides found in the primary and secondary
cell walls of all land and fresh water plants, and in some seaweeds. The hemicelluloses, …

Delignification of rye straw using hydrogen peroxide

RC Sun, JM Fang, J Tomkinson - Industrial crops and products, 2000 - Elsevier
Alkaline peroxide delignification of rye straw has been first investigated in this paper. The
results showed that treatment of dewaxed and water-extracted rye straw with 2% H 2 O 2 at pH …

Recent and future developments on TOSCA at ISIS

…, AJ Ramirez-Cuesta, J Tomkinson… - Journal of Physics …, 2014 - iopscience.iop.org
TOSCA is a high-resolution neutron spectrometer at the ISIS Pulsed Neutron and Muon Source.
The instrument is optimised for broadband vibrational spectroscopy in the 0–4000 cm− 1 …

Fractional isolation, physico-chemical characterization and homogeneous esterification of hemicelluloses from fast-growing poplar wood

RC Sun, JM Fang, J Tomkinson, ZC Geng, JC Liu - Carbohydrate Polymers, 2001 - Elsevier
Extraction of the dewaxed and partially delignified fast-growing poplar wood with 1.5, 3.0,
5.0, 7.5 and 8.5% NaOH at 20C for 16h solubilized 65.6, 71.6, 73.8, 85.6 and 89.3% of the …