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Starch-thickened acidic foodstuffs and method of preparation

Starch-thickened acidic foodstuffs and method of preparation

Starch-thickened acidic foodstuffs and method of preparation Abstract Starch-thickened acidic foodstuffs are provided in which the starch used as a thickener comprises sugary-2 starch ob[r]

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Starch Thickened Acidic Foodstuffs and Method of Preparation

Starch-Thickened Acidic Foodstuffs and Method of Preparation

Starch-Thickened Acidic Foodstuffs and Method of Preparation Abstract Starch-thickened acidic foodstuffs are provided in which the starch used as a thickener comprises sugary-2 starch ob[r]

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Preparation of SLS Polypropylene Powder by Solvent Method

Preparation of SLS Polypropylene Powder by Solvent Method

Preparation of polypropylene powder with solvent method actually is a process that polymer dissolved by heating, which need to go through three stages: heating, constant temperature, cooling. The processing temperature will influence the dissolution process of the polypropylene resin, which can affect the apparent density and the average particle size of prepared powder. At lower temperature, the resin particles partially dissolved, so the average particle size of powder is large, and the gap between the powder particles will become large when they accumulated be free, and the apparent density will be small; at higher temperature, the resin particles completely dissolved, the average particle size is small, and the internal density will decreased, so the apparent density of the prepared powder will reduce; only at a suitable temperature, most of the resin dissolved, and the remaining undissolved portion acts as a nucleating agent in the crystallization process, so the distribution of average particle size of prepared powder will be suitable and the apparent density of the powder at this time will be relatively large.
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Preparation method of Silver Nano particles

Preparation method of Silver Nano particles

Spray pyrolysis is another method of Ag NPs preparation by which the size of prepared nanoparticles about 100nm as average. A solution of Silver nitrate, was used to fabricate as Silver nanoparticles by using spray pyrolysis method [34]. At ◌ِ ◌ِ Ag nanoparticles preparation study, Kalyana and et al were prepared by using the flash pyrolysis method. flash pyrolysis designing is shown in Fig.1. Aqueous solution of Ag nitrate was prepared and injected in burette. The solution was follow into atomizer from this burette and the spray method was achieved by atomizer. The atomized spray injected throw the reaction chamber at temperature more than 650°C at tube furnace. A vacuum pump was used for ventilation of water vapor and other gases. The axial profile of temperature within the reaction chamber is recorded by thermocouples placed close to the surface of atomizer and the sample holder.
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The Research Of New Preparation Method Of Cresols

The Research Of New Preparation Method Of Cresols

The most widely used method for the preparation of methylphenols is the alkylation of phenol with methanol. The results of the investigation of this reaction in the presence of different oxide (4-6) and zeolite (7-8) catalysts have been either applied or have been applying to practice right now. This reaction is mainly favorable for the synthesis of orto- (o- ) and para (p-) cresols and it is not used practically for the production of m- isomer.

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Development and Validation of a Stability Indicating HPLC Method for the Analysis of Desvenlafaxine Succinate in the Presence of its Acidic Induced Degradation Product in Bulk and Pharmaceutical Preparation

Development and Validation of a Stability Indicating HPLC Method for the Analysis of Desvenlafaxine Succinate in the Presence of its Acidic Induced Degradation Product in Bulk and Pharmaceutical Preparation

A stability- indicating High Performance Liquid Chromatography (HPLC) method of analysis of desvenlafaxine suucinate( DSV) in the presence of its acidic induced- degradation product in pure and pharmaceutical preparation had been developed and validated. The chromatographic conditions comprised of an isocratic reversed- phase separation on Discovery C18 column. Elution was carried out using acetonitrile: phosphate buffer pH 3.8 (50 : 50 v/v) as a mobile phase at a flow rate of 0.7 ml/min and UV detection at 229 nm. The linear regression analysis data for the calibration plots showed good linear relationship in the concentration range 5-100 µg/ml (r 2 =0.9999). The values of slope and intercept were 34.295 and 12.564 respectively. The method was successfully validated in accordance to ICH guidelines acceptance criteria. The specificity and stability-indicating capabilities of the method was verified by subjecting DSV to acid hydrolytic stress condition. The acid degradation product was confirmed as 4-(1- cyclohexenyl-2-(dimethylamino)ethyl)phenol. Under the chromatographic condition, the degradation product was well resolved from the active pharmaceutical ingredients with significantly different retention time. Thus the proposed method was found to be stability- indicating and can be used for routine analysis of the drug without interference of acidic degradation product. The proposed method was successfully applied for the analysis of pharmaceutical formulation. The validity of the suggested procedures was further assessed by applying the standard addition technique which was found to be satisfactory. The results were statistically analyzed and compared with those obtained by the reported method.
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Cocoyam Used as Substitute of Cassava in the Preparation of Starch Based Biofilms and Biocomposites by Casting Method

Cocoyam Used as Substitute of Cassava in the Preparation of Starch Based Biofilms and Biocomposites by Casting Method

Abstract— Cassava starch is used extensively to produce isotropic, odorless, tasteless, colorless, non-toxic and biologically degradable films. The similarity in composition, mineral content, microscopic, thermal, physicochemical and rheological properties between cassava and cocoyam starches being reported in literature, it is expected that, cocoyam could be used to increase the supply in equivalent starch. In this work, the possibility to replace cassava by cocoyam starch in the preparation of biomaterials is investigated. In this aim, the preparation of biofilms without and with 2 and 3D mineral fillers by casting method is brought out in one hand with cassava and in the other hand, with cocoyam. The water barrier and the mechanical characteristics of the films obtained with cocoyam starch are compared to those prepared with the same method but using cassava starch. The results show that cocoyam starch based films exhibit poor water barrier and mechanical characteristics due to its brittleness, which have been improved by the use of fillers. Meanwhile, they exhibit much poorer characteristics than those based on cassava starch both for films and biocomposites.
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Preparation and Electrochemical Properties of LiMn2O4 by Solid-State Combustion Synthesis Method Using Starch as a Fuel

Preparation and Electrochemical Properties of LiMn2O4 by Solid-State Combustion Synthesis Method Using Starch as a Fuel

starch as a fuel. It is obvious that all the samples distributed un-uniformly and the large particles surfaces covered with some small grains. With the increase of starch content, the particle size increases and the agglomeration becomes more seriously. Among them, the particle size of sample without fuel is about between 1.1 and 3.2 µm, after different contents of starch were added (b-d), the grains size distribution ranges from 1.5 to 5.2 µm, indicating that the grains size is influenced by the content of starch.

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Preparation and characterization of dialdehyde starch and its` cross linking with copper (II) ion

Preparation and characterization of dialdehyde starch and its` cross linking with copper (II) ion

The carbonyl content of the dialdehyde cassava starches were determined according to the method described in the literature (Zhang et al. 2009). A dried sample (1.0g) was slurred in water (300ml) and heated to completely dissolve. The cooled solutions were adjusted to pH 3.2 with 0.118M HCl, and then 60.0ml of hydroxylamine hydrochloride (HMH) solutions was added (HMH 50.0g ; 100ml 0.1 M NaOH diluted to 500ml). The solution were heated to 40 o C in an oven for 4 hours and titrated rapidly to pH 3.2 with 0.118M HCl. Water was used as blank and sample was run three times and the coefficient of variation was 2%. The carbonyl content was calculated by the following equation.
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PREPARATION AND EVALUATION OF MATERIAL PROPERTIES OF CO PROCESSED DILUENT CONTAINING MODIFIED STARCH AND DICALCIUM PHOSPHATE

PREPARATION AND EVALUATION OF MATERIAL PROPERTIES OF CO PROCESSED DILUENT CONTAINING MODIFIED STARCH AND DICALCIUM PHOSPHATE

Abe et al., recommended two step additions of glidant 20 . The first step of glidant addition would result in formation of coat around drug particles. Acetaminophen tablets are made by using wet or dry granulation method due to the flowability and compressibility issues. In the present work, direct compression was used for preparing acetaminophen and glycyrrhiza glabra (a fibrous herbal drug) tablets. Acetaminophen and glycyrrhiza glabra exhibited good flowability when 0.5% glidant was blended separately before adding the other ingredients. Good flow is a pre-requisite for good mixing. The tablets showed little deviation in weight and quick disintegration. When the dispersions were passed through 710µm, no particles were retained on sieve.
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Preparation and evaluation of sulfamethoxazole solid dispersion employing starch citrate-a new solubility enhancer

Preparation and evaluation of sulfamethoxazole solid dispersion employing starch citrate-a new solubility enhancer

Solid dispersion of sulfamethoxazole by employing starch citrate as solubility enhancer prepared by utilizing physical mixing, solvent evaporation and kneading method. Starch citrate used in three different ratios shows maximum solubility in formulation comprising ratio 1:3. Among methods of preparation of solid dispersion, kneading method was found to be best method as a solubility enhancer of poorly soluble drugs. Therefore, starch citrate can be used as a carrier in formulation of solid dispersion.

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Preparation and Usage of Pre-Gelatinized Starch for Enhancing the Solubility of Water Insoluble Anti-Inflammatory Agent

Preparation and Usage of Pre-Gelatinized Starch for Enhancing the Solubility of Water Insoluble Anti-Inflammatory Agent

¾ Yongmei Xie et al., 55 (2008) were prepared solid dispersions of esomeprazole Zinc in polyethylene glycol 4000 ( PEG 4000 ) with different EZ to PEG 4000 ratios by solvent method. studies showed that dissolution rate of EZ were distinctively increased in the solid dispersion system compared to that in pure EZ or physical mixtures. The increase of dissolution rate was obviously related to the ratio of EZ to PEG4000. The solid dispersion system (EZ/PEG4000 = 1/8, w/w) gave the highest dissolution rate: about 14.7-fold higher than that of the pure EZ. EZ was proved to be in amorphous state in this solid dispersion by using differential scanning calorimetry (DSC) and scanning electron microscopy (SEM) techniques.
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Starch Nanoparticles – Two Ways of their Preparation

Starch Nanoparticles – Two Ways of their Preparation

Starch nanoparticles (SNP) originate from the disruption of the semi-crystalline structure of starch granules. They are very useful in food packaging technology because they increase the mechanical and water vapour resistance of the matrix as well as hinder its recrystallisation during storage in high humidity atmospheres. In medicine, SNP are suitable as carriers in modulated drug delivery for immobilized bioactive or therapeutic agents. Depending on the method of preparation, nanoparticles with different physicochemical, technical or mechanical properties can be obtained. Two different methods of preparation were characterized and compared in this work: the first involving acid hydrolysis of the amorphous part of a starch molecule and the second focusing on the debranching of starch by enzymatic treatment with pullulanase.
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PREPARATION AND EVALUATION OF STARCH PHOSPHATE- A NEW MODIFIED STARCH AS A DISINTEGRANT IN TABLET FORMULATIONS

PREPARATION AND EVALUATION OF STARCH PHOSPHATE- A NEW MODIFIED STARCH AS A DISINTEGRANT IN TABLET FORMULATIONS

Tablets of (i) sulfamethoxazole (100 mg) and (ii) paracetamol (120 mg) were prepared by conventional wet granulation method employing acacia (2%) as a binder, lactose (q.s) as diluent, talc (2%) and magnesium stearate (2%) as lubricants and water as granulating fluid. Starch phosphate was included in the formulations as disintegrant at 5 and 10% strength in each case. For comparison tablets were also prepared employing crospovidone (a super disintegrant) as disintegrant at 5 and 10% strength in the tablets. Two series of tablets were made in each case. In one series starch phosphate was added before granulation (wet addition) and in the other series it was added after drying the granules and before compression (dry addition). The granules were compressed into tablets on a tablet punching machine (M/s Cadmach Machinery Co. Pvt. Ltd) to a hardness of 7 kg/cm 2 using 9 mm round and flat punches. In each case 100 tablets were compressed.
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Preparation of PtRu/C Electrocatalysts by Borohydride Reduction for Methanol Oxidation in Acidic and Alkaline Medium

Preparation of PtRu/C Electrocatalysts by Borohydride Reduction for Methanol Oxidation in Acidic and Alkaline Medium

The micrographs and histograms of the particle size distribution, obtained by electronic microscopy transmission for Pt/C and PtRu/C electrocatalysts are illustrated in Figure 2. Pt/C and PtRu/C showed a good dispersion of the nanoparticles on the carbon support; however, the mean diameter of nanoparticles for Pt/C and PtRu/C electrocatalysts are in the range of 2.0–4.0 nm. Jung et al [23] prepared PtRu/C electrocatalysts using an aqueous co-impregnation method, with NaBH4 as a reducing agent. In Jung work, the transmission electron microscopy (TEM) images showed spherical particles carbon blacks with 10–30 nm, and dark dots that measure, approximately, 2 nm related to PtRu metal alloys supported on the carbon blacks.
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EFFECT OF CHARCOAL TREATMENT ON SOME KEEPING QUALITIES OF SOY-CASSAVA STARCH PASTE IN THE PREPARATION OF AKARA

EFFECT OF CHARCOAL TREATMENT ON SOME KEEPING QUALITIES OF SOY-CASSAVA STARCH PASTE IN THE PREPARATION OF AKARA

dam, 1989). It is also very rich in poly- unsaturated fatty acids which are essentially important to human, but the presence of Linolenic acid in soybean tends to reduce the stability of its oil to flavour reversion (Rackis and Wold, 1973). Raw soybean contains many biologically active anti-nutritional fac- tors such as trypsin inhibitor and lipoxy- genase which have been implicated with poor protein digestibility and production of beany off-flavour respectively (Eskin et al., 1970). It has also been implicated with the formation of thyroid enlargement, a disease mainly caused by iodine deficiency. Soybean contains a goitrogen which is removed or destroyed during processing (Block et al., 1961). It is therefore not possible for goitro- gen in treated beans to affect the availability of iodine. In any case, the pre-treatment method of pre-soaking and blanching at 100 ⁰ C to which soybean is subjected have been known to eliminate the risk of anti- nutritional factors (Rackis, et al., 1973) Other food legumes of culinary importance in Africa include cowpea (Vigna unquiculata) and Groundnut (Arachis hypogea) among oth- ers. Cowpea is the most widely consumed legume in Nigeria. It may either be cooked directly and consumed, or may be used for making varieties of foods and may be made into pastes and cooked in molded wraps or leaves to make moinmoin and ekuru or deep fat fried to produce akara. A possible means of promoting the utilization of soybean is by assessing the production of African foods for which other legumes are currently been utilized with the aim of substituting soybean in part or whole into such foods.
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Automatic Cationic Starch Preparation in Paper Industry

Automatic Cationic Starch Preparation in Paper Industry

The existing method they are working with separate pipelines for filling each tanks. They are works manually in industry so they have some drawback like excess usage of water creates physical damages to the paper like tearness, loss of furnish, less stiff. In this process required more amount of water.It consists of separate starch mixing tank with Sagitator, level transmitter for each tank

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Determination of mercury species in foodstuffs using LC ICP MS: the applicability and limitations of the method 

Determination of mercury species in foodstuffs using LC ICP MS: the applicability and limitations of the method 

The chromatographic resolution of methylmercury and inorganic divalent mercury peaks is sufficient even if a trace amount of one species is present in a large excess of the other. The ICP-MS detection is specific and sensitive enough to quantify mercury species at lower ng/g levels. To achieve reliable results, a proper calibration is necessary; fresh calibration solutions should be prepared on a daily basis. Moreo- ver, any source of sample contamination should be eliminated or minimised. Therefore, we kept the way of sample preparation very simple. As a ubiquitous element in chemical laboratories, mercury is prone to contaminate the samples, especially as inorganic divalent mercury. All chemicals should be checked for impurities of mercury. The precautions against contamination include namely a thorough cleaning of disposables (filters and syringes) and centrifuge tubes, which are used for sample extraction, and the insertion of an injection blank before each sample injection. In addition, several procedure blanks have to be included in each sample series.
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Preparation and characterization of a vitreous phase and application as a corrosion inhibitor in acidic medium

Preparation and characterization of a vitreous phase and application as a corrosion inhibitor in acidic medium

capacitive loop assigned to the charge transfer of the corrosion process, the diameter increases with the concentration of A1 compound. To extract the electrochemical parameters, the model of the equivalent circuit used is shown in Figure 4. The highest resistance and therefore the most important efficiency are also achieved at a concentration of 150 ppm confirming the A1 inhibitor effect (table 4). The E (%) values obtained from the ac impedance technique are comparable and run parallel with those obtained from the potentiodynamic polarization method.
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Fabrication of starch based microparticles by an emulsification crosslinking method

Fabrication of starch based microparticles by an emulsification crosslinking method

Starch, an abundant, non-toxic, biodegradable, edible, and relatively inexpensive material has been used widely in the entrapment of food ingredients [6-9] and drugs [10-12]. Research pertaining to the preparation of starch-based microparticles for food application has mainly been focused on using spray drying method. Nevertheless starch-based, spray-dried microparticles which dissolve rapidly after oral ingestion are not suitable for controlled release of food bioactives. Starch-based microparticles for controlled release pharmaceutical applications have been prepared by w a t e r -in-oil (w/o) emulsification crosslinking methods [13-16]. Crosslinking is an effective way to render microparticles water-insoluble, and the release profile of entrapped materials could be controlled by alter- ing the crosslinking degree. However, the w/o emulsification crosslinking method for the controlled release in food applications presents some challenges, particularly when toxic organic solvents are used as the continuous phase of the w/o emulsion [14,17]. These organic solvents might affect the stability of the encapsulated bioactive compounds and leave toxic residues incompatible with food applications. These product safety and stability concerns restrict the use of this method making it necessary to develop an alternative ‘‘safe” process.
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