Starch derivatives

In ebook "Bio-based polyols and polyurethanes" the most recent advances in the production of polyols and polyurethanes from renewable resources, mainly vegetable oils, lignocellulosic biomass, starch, and protein. The typical processes for the production of polyols from each of the above mentioned feedstocks are introduced and the properties of the resultant polyols and polyurethanes are also discussed.

86p nhanphanguyet 28-01-2024 3 2   Download

This work reports on water desorption from cassava starch in relation with the structure and conditioning of granules in suspensions or after equilibration in desiccators. The experimental work is performed by thermogravimetric analysis with isothermal and non-isothermal protocols and interpreted to derive the activation energies and desorption frequencies according to the humidity range with no adjustable parameter.

9p vihermione 06-01-2023 7 3   Download

Different starch derivatives were evaluated as supports for attachment and recovery of macrophages (RAW 264.7 line). Gelatinized starch (G-St), acetate starch (Ac-St), carboxymethyl starch and aminoethyl starch were synthesized and characterized by FTIR, 1H NMR, SEM and static water contact angle.

10p vihermione 06-01-2023 10 2   Download

Hydroxyethyl starch (HES) is used for repletion of acute intravasal volume loss in surgical patients. However, in critically ill patients, HES is associated with acute kidney injury. We aimed to evaluate the effect of HES on perioperative cystatin C (cystC)-derived estimated glomerular filtration rates (eGFRcystC) in patients undergoing open and robot-assisted radical prostatectomy.

8p viottohahn 30-03-2022 10 1   Download

Plastic single-use packaging is one of the largest contributors to plastic pollution in Vietnam as well as in many other countries. Alternative materials, especially materials derived from natural and renewable sources, should be developed to solve this global issue. In this study, we aimed to investigate the synthesis and properties of packaging paper sheets from sugarcane bagasse and lemongrass by-products.

11p cothumenhmong12 09-07-2021 23 1   Download

Superabsorbent hydrogels show a large potential in a wide array of applications due to their unique properties. Carboxymethylcellulose (CMC) is a commercially available water-soluble cellulose derivative of major interest in the hydrogel synthesis.

10p vijiraiya2711 27-05-2020 10 0   Download

Agrobacterium tumefaciens-based transient assays have become a common tool for answering questions related to protein localization and gene expression in a cellular context. The use of these assays assumes that the transiently transformed cells are observed under relatively authentic physiological conditions and maintain ‘normal’ sub-cellular behaviour.

20p viminato2711 22-05-2020 10 1   Download

The variation of growth and cold tolerance of two natural Arabidopsis accessions, Cvi (cold sensitive) and Rschew (cold tolerant), was analysed on a proteomic, phosphoproteomic and metabolomic level to derive characteristic information about genotypically distinct strategies of metabolic reprogramming and growth maintenance during cold acclimation.

19p vihashirama2711 21-05-2020 14 0   Download

The study aimed to compare the ability of extracting resistant starch (RS) from three common fruit seeds in Vietnam, namely avocado, jackfruit and mango seed. Avocado (Persea Americana) seeds, jackfruit (Artocarpus heterophyllus) seeds and mango (Mangifera indica L.) seeds were collected from local markets in Ho Chi Minh City, processed and extracted of starch.

7p abcxyz123_02 03-03-2020 11 1   Download

In the past years, various studies have been done on biodegradable materials to replace petroleum based plastics for food packaging application. For this purpose, biopolymers are considered the most favorable material because of their biodegradable nature and long shelf life properties like resistance to chemical or enzymatic reactions. Keeping in view the non-renewable nature and waste disposal problem of petroleum based plastics; newer concept of use of bioplastics came into existence. Bioplastics are derived from renewable resources i.e.

11p kethamoi2 14-12-2019 13 0   Download

A new class of injectable, biocompatible and biodegradable hydrogel is reported. This hydrogel is derived from N-succinyl chitosan (SCS) mixed with water-soluble dialdehyde starch (DAS) without using a conventional chemical crosslinker. The hybrid hydrogel is formed owing to the Schiff’s base reaction between amine groups of SCS and dialdehyde groups of DAS to form ACH‚NA group. SCS, DAS, and SCS–DAS hybrid hydrogels were synthesized and then characterized by FTIR analysis spectroscopy.

9p kequaidan1 16-11-2019 13 1   Download

Starch- and plant-protein-based glues, for example, do not have the strength of petrochemical-derived superglues. On the other hand, plant-derived chemicals have unique advantages for other uses. Recombinant proteins, for example, can be designed and produced in plants to provide tissue glues analogous to the fibrinogen that naturally forms around a flesh wound. Emerging technologies offer dramatic new capabilities to alter plant metabolic pathways, opening up unprecedented opportunities to produce high-value chemicals from renewable resources....

23p loixinloi 08-05-2013 64 6   Download

Carbohydrates are sugars and starches derived from cereals, tubers, roots, and other substances such as cellulose and lignin from plant cell walls, vessels and woody tissues. Carbohydrates do mainly provide energy for maintenance and production. A surplus of energy is stored as body fat. A part of the carbohydrates is crude fibre (CF), the remaining is nitrogen-free extract (NFE). The latter consists of sugars, starches and sugar-like substances. Sugars and starches are much easier to digest than CF.

0p conduongdinhmenh 07-05-2013 91 28   Download

Inhibitors targeting pancreatic a-amylase and intestinal a-glucosidases delay glucose production following digestion and are currently used in the treatment of Type II diabetes. Maltase-glucoamylase (MGA), a family 31 glycoside hydrolase, is ana-glucosidase anchored in the membrane of small intestinal epithelial cells responsible for the final step of mammalian starch digestion leading to the release of glucose.

11p inspiron33 26-03-2013 43 3   Download

His334 facilitates catalysis byCorynebacterium callunaestarch phosphory-lase through selective stabilization of the transition state of the reaction, partly derived from a hydrogen bond between its side chain and the C-6 hydroxy group of the glucosyl residue undergoing transfer to and from phosphate.

11p media19 04-03-2013 35 1   Download

In 2008, the price of green power for residential customers in utility programs ranged from -1.0¢/kWh (a savings compared to standard service) to 8.8¢/kWh above standard electricity rates, with an average premium of 1.8¢/kWh and median of 1.5¢/kWh. These premiums have been adjusted to account for any fuel-cost exemptions granted to green power program participants. 16 In 2008, the utility programs with the lowest premiums for energy derived from new renewable sources had premiums ranging from -1.0¢/kWh (a savings) to 0.9¢/kWh. On average, consumers spend about $5.

57p lenh_hoi_xung 21-02-2013 68 5   Download

Petroleum-based industrial products have gradually replaced products derived from biological materials. However, biologically based products are making a comeback--because of a threefold increase in farm productivity and new technologies. Biobased Industrial Products envisions a biobased industrial future, where starch will be used to make biopolymers and vegetable oils will become a routine component in lubricants and detergents.

162p mnemosyne75 02-02-2013 45 4   Download

Rapid expansion in international credit bears watching because, in many boom-bust credit cycles in the past, such credit tended to grow faster than overall credit during the boom.5 We illustrate this broad finding with data from several European countries that have suffered credit booms and busts since 2000. Then, we draw a parallel with countries that were caught up in the Asian financial crisis of the late 1990s. By international credit, we refer to three components of total bank credit, the first two of which are types of cross-border credit.

5p enter1cai 12-01-2013 40 1   Download

Research, development and industrialisation of renewable energy are currently moving at a rapid pace worldwide. Biofuels play significant roles in decarbonisation of our future energy needs and act to mitigate deleterious impacts of greenhouse gas emissions. Liquid transportation biofuels (bioethanol and biodiesel) now represent key contributors to the bioenergy portfolios in many countries. National governmental obligations and international directives are mandating the blending of biofuels in petrol (gasoline) and diesel and these are acting as great stimuli to this industrial sector.

114p sn_buon 29-11-2012 58 7   Download

Research, development and industrialisation of renewable energy are currently moving at a rapid pace worldwide. Biofuels play significant roles in decarbonisation of our future energy needs and act to mitigate deleterious impacts of greenhouse gas emissions. Liquid transportation biofuels (bioethanol and biodiesel) now represent key contributors to the bioenergy portfolios in many countries.

0p sofia11 08-05-2012 100 25   Download