The potential contamination of ancient residues from both modern plant sources and sediments adjacent to archaeological contexts can complicate interpretation in the field of starch grain analysis, thus affecting the sustainable use of the method in archaeobotany. In this study, we examined two potential sources of contamination at a wheat field in Shandong Province and a maize field in Beijing...

Vital wheat gluten and lecithin (GL) (50:50, w/w) were dry blended in a coffee grinder and a 9.5% (w/v) aqueous slurry was jet-cooked (steam pressures of 65 psi/g inlet and 40 psi/g outlet) to disaggregate wheat gluten and facilitate better dispersion of the two components. The jet-cooked material was freeze-dried and stored at 0 8C for future use. The GL blend was added to pure food grade comm...

Over the last decades, there has been growing needs to find alternatives to petroleum-based products because of environmental concerns. Starch is an inherently biodegradable, renewable and low-cost material, and has high potential in food or non-food applications [1]. In that respect, the applications of starch have given rise to a great number of studies [2–5]. Native starch, when plasticized ...

Three phase partitioning (TPP) of starch and its derivatives was carried out by adding tert-butanol to the aqueous solution of the polysaccharides in presence of ammonium sulfate. Starch and its modified forms could be recovered in more than 90% yield in the form of an interfacial layer between aqueous and organic phases. Quantitative FT-IR spectral analysis of TPP-treated potato starch reveale...

Young coleoptiles of wheat (Triticum durum var. Henry), depleted of amyloplast starch by incubation at 30 degrees C with gibberellin plus kinetin, retained their geotropic responsiveness. Depleted coleoptiles curved upward more slowly than controls, but this was commensurate with their slower growth. The ratio of curvature to growth was about 50 degrees per mm of elongation in both cases. Newly...

Slade et al. describe the application of TILLING to the identification of an allelic series of variants in the granule-bound starch synthase I (GBSSI) gene in hexaploid and tetraploid wheat. GBSSI or Waxy plays a critical role in the synthesis of amylose, which, in addition to amylopectin, comprises the starch fraction of the seed. Reduction or loss of GBSSI function results in starch with a de...

Nine Aspergillus and three of Trichoderma strains were grown on wheat bran (WB) medium under solid state fermentation (SSF) for amylase production. Aspergillus oryzae LS1 produced the highest level of the enzyme. The thermal stability profile of its crude enzyme revealed the half-life time of more than 2 h at 50 and 60ºC. The enzyme production was affected by strain type, incubation periods, le...

Wheat and high-moisture corn (HMC) were fed singly and in three combinations using dry-rolled wheat (DRW) (ratios of 75:25, 50:50, and 25:75, respectively, Trial 1), or singly and in two combinations using steam-rolled wheat (SRW) (ratios of 67:33 and 33:67, respectively, Trial 2) to finishing beef cattle fed a high-concentrate diet. In situ rate of starch digestion (Trial 3) was measured on gr...

the aim of this study was to establish and optimise a simplified method of halved grain culture, in order to utilise it to evaluate the ability of isolated sinks (developing wheat grains) in sucrose uptake and conversion (defined by sink strength) under unlimited source conditions. both sucrose uptake and starch synthesis increased linearly over the incubation periods used in this study. a ...

Dough rheological and starch pasting properties play an important role in determining processing quality in bread wheat (Triticum aestivum L.). In the present study, a recombinant inbred line (RIL) population derived from a Gaocheng 8901/Zhoumai 16 cross grown in three environments was used to identify quantitative trait loci (QTLs) for dough rheological and starch pasting properties evaluated ...