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217 results for “starch”
Synthetic data starch potato system Veenkoloniën
<p>Synthetic generated with a simulation model for the starch potato production systems in the Veenkoloniën</p>
Supp. Data for the article From raw microalgae to bioplastics: conversion of Chlorella vulgaris starch granules into thermoplastic starch
<p>Supplementaty Data (Videos) for the article From raw microalgae to bioplastics: conversion of Chlorella vulgaris starch granules into thermoplastic starch</p>
Increased accuracy of starch granule type quantification using mixture distributions
<p>This release accompanies the paper "Increased accuracy of starch granule type quantification using mixture distributions".</p>
starchID: CNN based identification of microscopic starch images
<p>This is a collection of 500px images of 10 different starch types.</p> <p>It comprises about 40000 images, i.e. 4000 per species.</p> <p>Imaging was performed with equipment maintained by the Center for Microscopy and Image Analysis, University of Zurich.</p> <p>Photos were shot using a Leica Dmi8 light microscopy system (20x) coupled to a Leica DMC6200 digital camera.</p> <p>The data are part of a course assignment for the CAS Artificial Intelligence at the Lucerne University of Applied Sciences and Arts.</p> <p>For raw data and other inquiries just text <a href="mailto:info@peterstaub.is">me</a>.</p> <p>Jupyter notebooks may be found <a href="https://github.com/peterausderschweiz/starchID/">here</a>.</p>
Data for the manuscript 'Single fibre coating of cellulosic fibres for hydrophilic modification using carboxymethylated starch'
<p>Research data to the manuscript about hydrophilic modification of cellulosic fibers using carboxymethylated starch</p>
Data from: A morphometric analysis of starch granules from two Dioscorea species
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Data from: Effect of storage condition on the physicochemical properties of corn-wheat starch / zein edible bilayer films
<p>The functional properties of biopolymer-based film packaging materials are susceptible to external storage conditions. The effects of different storage temperature, relative humidity (RH) and duration on the apparent form, barrier properties, mechanical properties and microstructure of corn-wheat starch/zein bilayer films were studied. From 0 to 150 d, storage temperature and RH, but not storage time, affected the appearance and colour of the bilayer films. The increase in haze of the bilayer films stored at 25°C was much greater than that at low temperatures. With increased storage time, the moisture content first increased and then decreased, while the water resistance and oxygen barrier properties of the bilayer films worsened. After 150 d, the bilayer film stored at 25°C with 54% RH had better water resistance properties. The oxygen barrier properties of the bilayer film stored at 25°C with 43% RH were preferable to those of other groups because the peroxide value of vegetable oil packed in the former bilayer film was the lowest. The tensile strength of bilayer films stored at 25°C with RH of 43%, 54%, and 65% decreased, but were still better than those stored at low temperatures (-17°C, 4°C), which were tough due to their high elongation at break. SEM results showed tight bonds between the bilayer films, and the network structure inside the films disappeared and reappeared during storage. The cross-sectional compactness changed, and there was no film separation after 150 d.</p>
Device for making powder in starch capsules
ID no.: KGZ 863 Time of creation: 19th/20th century Museum: The Museum of Pharmacy at the Jagiellonian University Medical College in Kraków https://muzea.malopolska.pl/en/objects-list/1971 Digitalisation: RDW MIC, Virtual Małopolska project Source: Objaverse 1.0 / Sketchfab
In vitro digestion of protein and starch in sponge cakes formulated with pea (Pisum sativum L.) ingredients
<p>This is the data used for the figures and supplementary information in the following publication:</p> <p>S. Krause, S. Debon, K. Pälchen, R. Jakobi, C. Bonazzi, B. Rega and T. Grauwet, Food Funct., 2022, 13, 3206-3219. DOI: 10.1039/d1fo03601g</p> <p> </p> <p><strong>Abstract</strong></p> <p>This study investigated the <em>in vitro </em>digestion of purified pea fractions (protein isolate and starch) in sponge cakes when compared to unrefined pea flour and to the whole wheat flour and purified maize starch commonly used in the food industry. Proteins in the wheat cake were hydrolysed more rapidly than those in cakes made with either pea flour or a combination of pea proteins and purified starch. In absolute terms, however, more readily bioaccessible protein was released from these pea cakes (by around 40%). By contrast, cakes containing wheat flour or maize starch were more susceptible to amylolysis compared to those based on pea starch in the form of the purified ingredient or whole flour. This could be attributed to a higher proportion of amylose and resistant starch in the pea cakes as well as structural characteristics that might have decelerated enzyme-substrate interactions. Interestingly, similar digestion patterns were observed regarding the purified pea ingredients and unrefined whole pea flour. It was therefore concluded that pea ingredients, and particularly the less purified and thus more sustainable whole pea flour, are promising plant-based alternatives for use in gluten-free baked products.</p>
Identification of starch granules on ground stone tools exposed to fire
<p>Intense wildfires destroy everything in their path, including archaeological sites. Prehistorically, archaeological sites were regularly and intentionally burned. In what ways does burning affect those sites? With increased wildfire activity, research has begun to describe the effects of fire on archaeological materials through post-fire and experimental treatment, yet, little is known about the effects of fire on microbotanical remains, such as starch granules. Although some studies address the impact of fire on starch-rich foods, there is virtually no research on the fire effects of starch granules embedded in ground stone tools. The current study examines changes in the morphology of starch granules embedded in ground stone tools before and after exposure to flame combustion. A measurable amount of intact and identifiable starch granules was recovered from all of the treated samples. However, significantly fewer intact, identifiable granules were found as tools were exposed to higher temperatures for longer periods of time.</p>
In vitro protein and starch digestion kinetics of individual chickpea cells: from static to more complex in vitro digestion approaches
<p>Attention has been given to more (semi-)dynamic <em>in vitro</em> digestion approaches ascertaining the consequences of dynamic <em>in vivo </em>aspects on <em>in vitro </em>digestion kinetics. As these often come with time and economical constraints, evaluating the consequence of stepwise increasing the complexity of static <em>in vitro </em>approaches using easy-to-handle digestion set-ups has been the center of our interest.</p> <p>Starting from the INFOGEST static <em>in vitro </em>protocol, we studied the influence of static gastric pH <em>versus </em>gradual gastric pH change (pH 6.3 to pH 2.5 in 2 h) on macronutrient digestion in individual cotyledon cells derived from chickpeas. Little effect on small intestinal proteolysis was observed comparing the applied digestion conditions. Contrary, the implementation of a gradual gastric pH change, with and without the addition of salivary α-amylase, altered starch digestion kinetics rates, and extents by 25%. The evaluation of starch and protein digestion, being co-embedded in cotyledon cells, did not only confirm but accounted for the interdependent digestion behavior. The insights generated in this study demonstrate the possibility of using a hypothesis-based approach to introduce dynamic factors to <em>in vitro</em> models while sticking to simple and cost-efficient set-ups.</p> <p> </p> <p>The data used for the graphs in the paper: K. Pälchen, D. Michels, D. Duijsens, S. T. Gwala, A. K. Pallares Pallares, M. Hendrickx, A. Van Loey and T. Grauwet, Food Funct., 2021, DOI: 10.1039/D1FO01123E</p>
Assessment of legume starches to determine rheological characteristics relevant to alcohol production
<p>In the production of any alcoholic beverage you must understand the starch present and how to degrade it (via gelatinisation, liquefaction and saccharification) to simple sugars that are usable by yeast. Through using a RVA and a new rheometer method the gelatinisation temperature of a raw materials starch has been identified. This is the point where starch granules have become swollen with water and burst open to release their starch into solution thus making it available for enzymatic breakdown. This temperature point is specific to the raw material being used and is critical in producing a fermentable feedstock. This method can further be used to assess the success of different enzyme additions on starch breakdown; with a decrease in viscosity indicating successful enzymatic breakdown.</p> <p>Samples are milled to produce a fine grist. A fixed amount of the grist is then used to form a slurry with a calculated weight of water and run on a pre-set rheometer programme. The programme consists of an initial rapid stir followed by continuous stirring as temperature is increased, held, then decreased. The rheometer software then produces a chart output of the viscosity over time from which conclusions such as starch gelatinisation temperature, enzyme activity etc can be drawn.</p>
Rational Modification of Human Gut Microbial Metabolites by Dietary Resistant Starch in Patients After Allogeneic Hematopoietic Stem Cell Transplantation: A Prospective Feasibility Study
<p>We conducted a prospective longitudinal feasibility study in patients undergoing allo-HCT for hematological malignancies to test the hypothesis that defined and consistent administration of resistant starch will rationally modify intestinal microbiota dependent metabolites, particularly the short chain fatty acids (SCFA), such as butyrate. Ten adults undergoing human leukocyte antigen-matched, related-donor myeloablative allo-HCT were enrolled and received resistant potato starch (RPS) daily from day -7 to day 100 after allo-HCT. </p>
Biomasses, starch content, cell membrane leakage and phenology of established diploids and tetraploids and synthetic neotetraploids of Jasione maritima var. maritima
<p>Polyploidy is a pervasive phenomenon in nature and has significantly contributed to the adaptive evolution of plants. The conditions necessary for the spread of neopolyploids in populations of the diploid progenitor are limited; however, the superior competitive ability of neopolyploids may promote its establishment. Here, we assess the contribution of polyploidisation to the divergence of plant traits affecting competitive response, which could explain the successful establishment and current geographic distribution of polyploids. We conducted an intraspecific competition experiment using diploids, neotetraploids and established tetraploids of Jasione maritima var. maritima to determine whether cytotypes differ in phenological, growth and physiological traits and competitive response. Cytotypes respond differently under different competition scenarios with implications for cytotype establishment and distribution. Competition impacted all cytotypes, but neotetraploids were least affected by competition, and the tetraploids were the most impacted. Thus, competitive advantage may have contributed to the displacement of diploid populations and colonisation of new areas by neotetraploids but might have been lost afterwards. Evolutionary changes after polyploidisation have also been detected, and tetraploids invested more in belowground biomass, suggesting that root development might also play a role in colonising southernmost locations. Interestingly, diploids and both tetraploids seem to have different life strategies, the first investing in growth while the latter investing in reserves for the next season. Overall, polyploidisation seems to provide immediate changes that confer an advantage under competition that, together with other factors, may have allowed the establishment of neotetraploids.</p>
Starch granule analysis of bedrock metates in Warner Valley, Oregon
<p>Starch-rich geophytes are a highly-valued food among many human societies. For example, Indigenous people in the northern Great Basin plan social activities around the seasonal foraging of bulbs, roots, and tubers. Despite such obvious dietary and cultural importance, the antiquity of geophyte use in the Great Basin remains difficult to establish. Herbaceous underground storage organs do not preserve well in the archaeological record. Therefore, most studies rely on indirect evidence to infer geophyte consumption by hunter-gatherers during the late Pleistocene/early Holocene. It has been suggested that bedrock metates found among upland rock art sites in the northern Great Basin reflect seasonal geophyte exploitation over 14,000 years. Our study tests this hypothesis by analyzing starch residue extracted from bedrock metates at three archaeological sites in the uplands of Warner Valley, Oregon. Species of biscuit root (<em>Lomatium</em>) were collected in the field and sampled for starch. Systematic studies conducted on granules defined morphological characteristics were then applied to the identification of archaeological granules. Starch granules from geophytes, specifically <em>Lomatium</em> spp., were identified on metate surfaces at all sites, thereby providing direct evidence for the collection and processing of geophytes. These results support previous hypotheses regarding Paleoindian foraging strategies in the northern Great Basin.</p>
Carboxymethyl starch as a reducing and capping agent in the hydrothermal synthesis of selenium nanostructures for use with 3D-printed hydrogel carrier
<p>The hydrothermal method is a cost-effective and eco-friendly route for preparing various nanomaterials. It can utilize a capping agent, such as a polysaccharide, to govern and define the nanoparticle morphology. Elemental selenium nanostructures (spheres and rods) were synthesized and stabilized using a tailor-made carboxymethyl starch (CMS, degree of substitution = 0.3) under hydrothermal conditions. CMS is particularly convenient because it acts simultaneously as the capping and reducing agent, as verified by several analytical techniques, while the reaction relies entirely on green solvents. Furthermore, the effect of sodium selenite concentration, reaction time, and temperature on the nanoparticle size, morphology, microstructure, and chemical composition was investigated to identify the ideal synthesis conditions. A pilot experiment demonstrated the feasibility of implementing the synthesized nanoparticles into vat photopolymerization 3D-printed hydrogel carriers based on 2-hydroxyethyl methacrylate (HEMA). When submersed into the water, the subsequent particle release was confirmed by dynamic light scattering (DLS), promising great potential for use in bio-3D printing and other biomedical applications.</p>
Volume Kinetics for Starch Solution and Acetated Ringers
ClinicalTrials.gov study NCT01195025. IPD Sharing: Not stated. Countries: 1. Publications: 4.
Evaluate the Nephrotoxicity by 6% Hydroxyethyl Starch 130/0.4 in Old Patients During Orthopaedic Surgery
ClinicalTrials.gov study NCT02361736. IPD Sharing: UNDECIDED. Countries: 1. Publications: 1.
Safety Study of Repeated Doses of Glucagon on Animal Starch in the Liver
ClinicalTrials.gov study NCT01986231. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Identification of starch granules on ground stone tools exposed to fire
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