Comparative analysis of navy bean starch nanoparticles prepared via ultrasound, enzymatic debranching, and their synergistic application.

Navy bean starch (NS) nanoparticles were prepared using ultrasonication, enzymatic debranching, and their combined application. Ultrasonication was conducted at power levels ranging from 100 to 600 W for durations up to 25 min, while enzymatic debranching was carried out for up to 360 min. In the combined treatment, starch was subjected to ultrasound (300-600 W) in conjunction with enzymatic action for up to 30 min.

Comparison of protein composition and structural characterization of prolamin from Jiuzao extracted with different alkaline-alcohol methods.

This study evaluated the efficiency of extracting prolamin from Baijiu Jiuzao using different alkaline alcohol methods, and established an improved method based on the optimization of precipitation process and dialysis steps. Post-dilution acid precipitation enhanced recovery from 29.00 % to 83.

Modification of corn starch via ultrasound-assisted tartaric acid hydrolysis.

Traditional chemical methods for starch modification often involve harsh conditions or produce toxic byproducts, limiting their sustainability. While ultrasound and tartaric acid have been explored individually, their synergistic effects on structural disruption and energy-efficient processing remain underexplored. This study introduces a novel ultrasound-assisted tartaric acid hydrolysis method that combines ultrasound cavitation with tartaric acid hydrolysis under mild conditions (35 °C, 1.

Whey protein effects on properties and structure of hairtail surimi gel.

Whey protein was added to hairtail surimi gel (HSG), the properties and structural changes were determined, and whey protein effects on them were investigated after incorporating 0.00% to 10.00% whey protein.

Comparative study on structure and properties of oxidized starch under combined treatments of ultrasound and enzyme.

The present study has developed a novel, eco-friendly method for the modification of potato starch by incorporating ultrasonic pretreatment, enzymatic hydrolysis, and oxidation with hydrogen peroxide. The technical parameters of the modification were optimized through response surface methodology to give optimum conditions. The results showed that the combination of ultrasound and enzyme disrupted the microstructure and crystalline structure of the starch granules, thus allowing for easier penetration of modifying agents and increasing the reactivity of the starch.

Effects of different pretreatment methods on the degree of substitution, structure, and physicochemical properties of synthesized malic acid sweet potato starch ester.

Background: The preparation of malic acid starch ester (MSE) is mostly carried out using a high temperature method, but there are problems such as high energy consumption, long preparation time, and uneven heating. Microwave technology can be used to overcome these limitations. The semi-crystalline structure of starch granules hinders the modifier's access to the matrix, thus limiting the esterification reaction.

Effects of microwave radiation on the physicochemical properties, structure, and digestibility of the synthesized different crystal forms of malic acid starch ester.

The effects of microwave combined with L-malic acid treatment on the degree of substitution (DS), structure, physicochemical properties, and digestibility of sweet potato starch (A-type), potato starch (B-type), and pea starch (C-type) were evaluated. The order of DS obtained was: DS > DS > DS. Fourier transform-infrared spectroscopy (FT-IR) showed that the obtained modified starch produced a new absorption band at 1735 cm.

Insights into the changes of structure and digestibility of microwave and heat moisture treated quinoa starch.

In this study, quinoa starch was subjected to microwave and heat moisture treatment (MHT) with various moisture content (15 %, 25 %, 35 %) and microwave power (4.8, 9.6, 14.

Structural and physicochemical properties of resistant starch under combined treatments of ultrasound, microwave, and enzyme.

The structural characteristics and physicochemical properties of native corn starch (NCS) and resistant starch (RS) prepared by enzymatic hydrolysis (RS-E), microwave-enzymatic hydrolysis (RS-ME), ultrasound assisted enzymatic hydrolysis (RS-UE), and microwave-ultrasound assisted enzymatic hydrolysis (RS-MUE) were investigated. The results showed that the combined treatments of ultrasound, microwave, and enzyme resulted in increases in RS content, amylose content, and solubility with a decrease in swelling power. RS-MUE exhibited the lowest digestibility, with a 41.

Adaptive synchroextracting transform and its application in bearing fault diagnosis.

Time-frequency analysis methods can be used to characterize the time-varying characteristics of a signal. The postprocessing algorithm further enhances this ability. The synchroextracting transform is a typical postprocessing algorithm that has the advantage of energy aggregation.

Effects of microwave and conventional heating on physicochemical, digestive, and structural properties of debranched quinoa starch-oleic acid complexes with different water addition.

Background: A starch-lipid complex is a new type of resistant starch, which is of great importance for the prevention of chronic diseases such as diabetes. Most starch-lipid complexes usually need to be treated by heating to make them suitable for a variety of applications, and starch-based foods are generally not edible without a heat-treatment process. However, the digestion and structural properties of the starch-lipid complex will be changed after heating.

Effects of NaCl and sucrose on the structural and functional properties of debranched quinoa starch-oleic acid complexes under baking.

The effects of different dosage of NaCl and sucrose on the structural and functional properties of debranched quinoa starch-oleic acid complexes (DQS-OA) under baking were investigated. The results showed that the resistant starch content of the baked DQS-OA increased by 17.15 % than DQS-OA.

Recent Trends in the Preparation of Nano-Starch Particles.

Starch is affected by several limitations, e.g., retro-gradation, high viscosity even at low concentrations, handling issues, poor freeze-thaw stability, low process tolerance, and gel opacity.

Effects of dual modification of lysine and microwave on corn starch: In vitro digestibility and physicochemical properties.

The effects of lysine addition and microwave treatment (MC) on the digestibility, physicochemical properties and structure of corn starch were investigated. Among all uncooked samples, unmodified corn starch (CS), microwave modified corn starch (MC-CS) and corn starch mixed with lysine (CS-Lys) contained 15.09 %, 14.

Application of ultrasound-assisted cryoprotectant impregnation for improving the storage quality of snakehead fish fillets.

In aquatic products companies, saccharides and phosphates are often used to impregnate products to improve their quality. Insignificant impregnation effect is a main problem met in the impregnation process. The effect of ultrasonic-assisted impregnation on the storage quality of snakehead fish fillets at -18 °C was studied.

Comparison of physicochemical properties and digestibility of sweet potato starch after two modifications of microwave alone and microwave-assisted L-malic acid.

The effects of microwave alone (MA) and microwave-assisted L-malic acid (MLA) on the physicochemical properties, structural and digestibility of sweet potato starch were investigated. The results showed that the swelling power, lightness (L) and whiteness index (WI), gelatinization enthalpy of starch decreased by MA and MLA treatment. The starch treated by MLA showed a new characteristic absorption peak at near 1735 cm in the measurement of FT-IR, while the starch treated with MA showed no new characteristic peak.

Closed-Cell Rigid Polyimide Foams for High-Temperature Applications: The Effect of Structure on Combined Properties.

Closed-cell rigid polyimide foams with excellent thermal stability and combined properties were prepared by thermal foaming of a reactive end-capped polyimide precursor powder in a closed mold. The precursor powder was obtained by thermal treatment of a polyester-amine salt (PEAS) solution derived from the reaction of the diethyl ester of 2,3,3',4'-biphenyl tetracarboxylic dianhydride (α-BPDE) with an aromatic diamine mixture of p-phenylenediamine (PDA) and 2-(4-aminophenyl)-5-aminobenzimidazole (BIA) in the presence of an end-capping agent (mono-ethyl ester of nadic acid anhydride, NE) in an aliphatic alcohol. The effect of polymer mainchain structures on the foaming processability and combined properties of the closed-cell rigid polyimide foams were systematically investigated.

Effects on the structure and properties of native corn starch modified by enzymatic debranching (ED), microwave assisted esterification with citric acid (MCAE) and by the dual ED/MCAE treatment.

Native corn starch was modified by enzymatic debranching (ED), microwave assisted citric acid esterification (MCAE), and by dual ED/MCAE. The structure and properties of native starch (NS), and the resulting debranched starch (DS), microwave assisted citric acid esterified starch (MCS), and microwave assisted citric acid debranched starch (MCDS) were determined and compared. Both the morphology and crystalline regions of the modified starches were changed by ED and MCAE.

Multi-Frequency Ultrasonic Extraction of Anthocyanins from Blueberry Pomace and Evaluation of Its Antioxidant Activity.

Background: A large amount of blueberry pomace is discarded and wasted.

Objective: To make full use of blueberry pomace and extract anthocyanins.

Method: Multi-frequency ultrasound was used to extract anthocyanins from blueberry pomace.

Preparation and characterization of PVDF/CaCO composite membranes etched by hydrochloric acid.

This study aimed to improve the pore size, porosity, and hydrophobicity of polyvinylidene fluoride (PVDF) membranes for desalination by vacuum membrane distillation (VMD). New membranes were prepared via etching PVDF/calcium carbonate (CaCO) composite membranes using hydrochloric acid (HCl), depending on the chemical reaction of CaCO and HCl. Etched membranes were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), differential scanning calorimetry (DSC), contact angle (CA), atomic force microscope (AFM), and scanning electron microscopy (SEM).

Comparative studies on structure and physiochemical changes of millet starch under microwave and ultrasound at the same power.

As two novel starch modification technologies, the comparative study between microwave (MC) and ultrasound (UC) is of important significance for their applications. The objective of this work is to compare the changes of millet starch with MC and UC, focusing on the viscosity, swelling power (SP), transparency (TR), short-range molecular order (FT-IR spectrum), thermal properties (DSC), long-range molecular order (X-ray diffraction), in vitro enzymatic digestibility, and morphological properties. MC changed the type of the pasting curves form B-type to C-type, and the maximum decrease of the peak viscosity and relative crystallinity of MC starch was 74.

Physicochemical and in vitro digestion of millet starch: Effect of moisture content in microwave.

In this study, the physicochemical and in vitro digestion of millet starch with different moisture content after microwave treatment were investigated. The structure and property changes of native (NA) and microwave treated (MT) millet starches were characterized using Brabender viscometer, Fourier transforms infrared spectroscopy (FT-IR), Differential scanning calorimeter (DSC), X-ray diffraction (XRD) and Scanning electron microscopy (SEM). Microwave treatment caused a decrease of the peak viscosity, swelling power, ΔH and relative crystalline, and an increase of the transparency, T, T, and ΔT.

Output-only modal analysis of wind turbine tower based on vibration response under emergency stop.

The identification technique of output-only modal parameters is proposed for the large wind turbine tower under emergency stop. Compared with the response of regular operating conditions, the immediate tower structural response under emergency stop much more resembles a state of free vibration, which is more appropriate for the modal identification of the wind turbine tower. The vibration response is measured in the nacelle, which is easy to perform in the field modal test.

Different-frequency ultrasonic effects on properties and structure of corn starch.

Background: Ultrasound is widely used to accelerate many reactions and unit operations, but few studies have reported its effects on starch properties and structure.

Results: Corn starch suspended in ethanol solution was treated by dual-frequency ultrasound (DFU) and single-frequency ultrasound (SFU). Results showed that the transparency of the starch treated under 20 + 25 kHz DFU improved by 26.

Evaluation of electronspun silk fibroin-based transplants used for facial nerve repair.

Objective: To study whether regenerated electrospun silk fibroin (SF) nanofibers as nerve conduits could improve nerve regeneration microenvironment and induce the facial nerve regeneration of Sprague-Dawley rats.

Design: Electrospun SF nanofibers were prepared to bridge a 5-mm facial nerve defect in Sprague-Dawley rats. Three months after implantation, a comprehensive morphologic and functional evaluation was performed by electrophysiology, histology, Fluorogold retrograde tracing, and transmission electron micrograph.