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Optimization of ultrasound-assisted extraction of mango cotyledon starch: Physicochemical, structural, thermal and functional properties.
Int J Biol Macromol
January 2025
Technological Development Center for Bioprocess and Agroindustry Plant, University of Caldas, Street 65 No. 26-10, Manizales 170001, Caldas, Colombia.
Article Synopsis
- Mango seeds, a byproduct of mango juice processing, are rich in starch, but traditional extraction methods are inefficient and environmentally harmful.* -
- The study improved starch extraction from mango seed cotyledons using ultrasound, achieving a maximum yield of 50.74%, which is 82.4% higher than conventional methods.* -
- The ultrasound method enhanced starch purity and properties while maintaining its structure, indicating potential uses in food and pharmaceuticals.*
Boosting Supramolecular Gelation Efficiency and Properties: Ionic Strength as a Key to Superior Hydrogels.
Langmuir
December 2024
Organic & Bioorganic Chemistry Laboratory, Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Adyar, Chennai 600020, India.
Controlling the minimum gelation concentration (MGC) of low molecular weight (LMW) hydrogelators is a key for modulating gel properties, such as mechanical strength, viscoelasticity, and stability, which are crucial for applications ranging from drug delivery to tissue engineering. However, tweaking the MGC under specific conditions, such as pH and/or temperature, poses a considerable challenge. Herein, we varied the ionic strength of buffer solutions using NaCl for several LMW hydrogelators, including Fmoc-Phe, Fmoc-Tyr, Fmoc-Trp, Fmoc-Met, and Fmoc-Cha, and assessed their gelation efficiency at pH 7.
View Article and Find Full Text PDFStress amplification and relaxation imaging around cracks in nanocomposite gels using ultrasound elastography.
Soft Matter
November 2024
Laboratoire de Sciences et Ingénierie de la Matière Molle, ESPCI Paris, Université PSL, Sorbonne Université, CNRS, F-75005 Paris, France.
The quantification and modeling of gel fracture under large strain and dissipative conditions is still an open issue. In this study, a novel method for investigating the mechanical behavior of gels under highly deformed states, specifically in the vicinity of the crack tip, was developed to gain insights into fracture processes. Shear wave elastography, originally developed for the biomedical community, is employed as a powerful tool to quantitatively map the local elasticity of model gels.
View Article and Find Full Text PDFMaking Sticky-Slippery Switchable Fluorogels Through Self-Adaptive Bicontinuous Phase Separation.
Adv Mater
November 2024
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry and Chemical Engineering & Center for Advanced Low-dimension Materials, Donghua University, 2999 North Renmin Road, Shanghai, 201620, China.
Developing gel materials with tunable frictional properties is crucial for applications in soft robotics, anti-fouling, and joint protection. However, achieving reversible switching between extreme sticky and slippery states remains a formidable challenge due to the opposing requirements for energy dissipation on gel surfaces. Herein, a self-adaptive bicontinuous fluorogel is introduced that decouples lubrication and adhesion at varying temperatures.
View Article and Find Full Text PDFDOTAGEL: a hydrogen and amide bonded, gelatin based, tunable, antibacterial, and high strength adhesive synthesized in an unoxidized environment.
J Mater Chem B
October 2024
Department of Biomedical Engineering, Bangladesh University of Engineering and Technology (BUET), Dhaka 1205, Bangladesh.
The development of bioadhesives that concurrently exhibit high adhesion strength, biocompatibility, and tunable properties and involve simple fabrication processes continues to be a significant challenge. In this study, a novel bioadhesive named DOTAGEL is synthesized by crosslinking gelatin (GA), dopamine (DA), and tannic acid (TA) in an unoxidized environment due to the advantage of controlling the degree of protonation in GA and TA, as well as controlling the degree of intermolecular amide and hydrogen bonding in the acidic medium. DOTAGEL (DA + TA + GA) shows superior adhesion strengths of 104.
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