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Showing 1 to 20 of 38 for “"amylopectin"”.
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Characterization of Environmentally Friendly Polymers: Amylopectin and Its Blends
… This research was attempted to characterize Amylopectin to obtain its physio-chemical properties. In addition, characterizations were extended to include blends of Amylopectin and biodegradable diluents. Blends of Amylopectin with biodegradable diluents including Polycaprolactone, …
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Effect of Metabolic Enzymes on Amylopectin Content and Infectivity of Cryptosporidium parvum
Amylopectin granules in Apicomplexan protozoa are hypothesized to be used as an energy source to aid the parasites in surviving in the environment allow latent stages to excyst and release infective stages, allow them to be mobile, invade host cells, and to continue their life cycle. The objective …
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Investigation of the phase transitions of pregelatinized waxy maize starch at low moisture contents
… endotherm to the retrogradation endotherm of amylopectin under higher moisture conditions, the presence of this endotherm may indicate structural changes in amylopectin occurring at low moisture contents that could lead to textural changes in the corresponding food system. Pregelatinized waxy …
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Physicochemical properties and molecular structure of kiwifruit starch
… development. The external/internal structures of amylopectins remained similar as the starch granules enlarged in growing kiwifruit, indicating homogeneous molecular structure from the inside to the outside of a kiwifruit starch granule. The dynamics of amylose content and molecular structure of …
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Effect of Enzymatic Treatments on the Physiochemical Properties of Different Corn Starches
… cereal flakes. The proportions of amylose and amylopectin long and short chains were affected by the β-amylase treatment and varied with starch type. All three corn starches had increased RS contents after moderate β-amylolysis with Hylon V having the highest RS content at 70.7% after 4 hr of …
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Fermentation of resistant starch: implications for colonic health in the monogastric animal.
… amounts of the major components amylose and amylopectin, was examined. In particular, the effects on bacterial fermentation of variations in the ratios of amylose and amylopectin in starch, and of treatments such as retrogradation and/or pancreatin digestion was examined.
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Factors Affecting Starch Conversion to Ethanol in Dry Grind Corn Process
… in dry grind corn process. Effect of amylose:amylopectin ratios and resistant starch in corn starch on ethanol concentration was evaluated with four enzyme treatments operating at varying temperature and pH liquefaction conditions. Final ethanol concentrations decreased with increase in …
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CHEMICAL AND PHYSICAL PROPERTIES OF CUCURBITA DIGITATA AND APODANTHERA UNDULATA STARCHES
… of the macromolecular fractions amylose and amylopectin from starches of A. undulata and C. digitata were examined. The dimethyl sulfoxide method proved to be effective for fractionation of each starch. Purity of these components was confirmed by iodine binding capacity, and they were found …
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Cloning and characterisation of the waxy genes of wheat and investigation of their potential applications
Wheat starch consists of amylose and amylopectin. The appropriate end-use of starch is dependent on an important property of starch, the ratio of amylose:amylopectin. Amylose is synthesized by the waxy protein, a predominant enzyme in the endosperm, the granule-bound starch synthase (GBSSI). A …
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Microparticle retention aid systems in mechanical pulp suspensions
… Tapioca starch, which has both amylose and amylopectin, is found to be a better retention and drainage aid than waxy maize starch, which only contains amylopectin. In the absence of starch, both flocculants are ineffective in improving retention and drainage. With starch, both flocculant and …
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Maltotetraose production using Pseudomonas stutzeri exo-alpha-amylase in a membrane recycle bioreactor
… of starches differing in the ratio of amylose to amylopectin, the amylopectin chain lengths, and the level of starch modification. Considering all the criteria of product purity, total product output, and production rate except fouling, unmodified native corn starches were shown to be better …
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Extrusion processing of selected fish feed blends containing distillers dried grains with solubles (DDGS)
… and Waxy I (containing 0% amylose and 100% amylopectin), respectively, on DDGS-based Nile tilapia feeds. The effect of different amylose to amylopectin ratio of the starch sources, varying feed moisture (15, 25, and 35% db); temperature setting (90- 90-90°C, 100-120-120°C, and …
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The characterization of starches and maltodextrins by proton nuclear magnetic resonance spectroscopy
… of amylose in physical mixtures of waxy maize amylopectin and isolated normal corn amylose. Phasing of spectra, drift correction, width of narrowed spectra, and integral size are factors that were found to influence ratio determinations.
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Study of starch debranching enzymes in developing wheat kernels
… increased as kernels matured, while the amylose/amylopectin ratio remained constant until the kernels reached a fully matured stage. The relationships between the concentrations of polysaccharides and the presence of isoamylase polypeptide, and the activity of limit dextrinase in developing wheat …
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Investigation of the heterogeneous ice nucleation potential of sea spray aerosol
… lipids, and carbohydrates in Procholorococcus. Amylopectin, agarose, and aspartic acid exhibited nucleation behaviors similar to particles generated from Procholorococcus cultures. Therefore, carbohydrates and proteins with numerous and well-ordered hydrophilic functional groups may determine …
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Application of a " Glucose Release Index " to assess physical and chemical characteristics of cereal grains that may influence starch digestion and subsequent energy supply to monogastrics
… content, starch granule size, the amylose to amylopectin ratio, starch gelatinisation properties ) and non - starch - related ( e.g., non - starch polysaccharide composition, kernel hardness, the presence of protein matrix and milling quality ) physical / chemical characteristics within and …
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The Functional Properties and Digestibility of Round and Wrinkled Pea Flour in Swine
… starches differ in the proportion of amylose and amylopectin. Wrinkled peas have a higher proportion of amylose due to the deficiency of the starch branching enzyme I (SBEI). In contrast, round peas have a lower proportion of amylose and higher total starch content. A higher proportion of amylose …
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The necessity of debranching in starch biosynthesis
… an unbound form. We also show that crystalline amylopectin is necessary for granule binding of GBSS I.
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Synthesis and Applications of Polysaccharide-Based Materials Using N-Thiocarboxyanhydrides and Polypeptides
… The NTA donor in this work was attached to amylopectin via thiol-ene "click" photochemistry with the amino acid cysteine providing the thiol source on amylopectin. H2S release half-lives were in the range of several hours and depended on polymer molecular weight. Lastly, Chapter 5 summarizes …
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Assessment of underutilized starchy roots and tubers for their applications in the food industry
… substitution did not alter the TS, amylose, and amylopectin contents of these mixtures. Changes of physicochemical properties were also observed in wheat-konjac composite flours. The increasing amount of konjac flour decreased the TS, amylose, amylopectin, and protein content of the mixtures. …
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