Article
Biochemistry & Molecular Biology
Hui Guo, Bingshuang Lei, Jianwei Yu, Yunfei Chen, Junqing Qian
Summary: The study successfully immobilized Rhizopus lipase on magnetic dialdehyde cellulose nanoparticles, optimizing the immobilization conditions to improve enzyme stability and activity. Changes in the secondary structures of the immobilized enzyme revealed increased conformational rigidity, leading to enhanced stability at different temperatures and pH levels, as well as improved tolerance to organic reagents. After storage for 30 days and 6 cycles, the immobilized enzyme still retained high recovery activity, indicating the promising application prospect of MDC in immobilized enzymes.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Instruments & Instrumentation
Sajjad Khan Einipour, Mehdi Sadrjahani, Alireza Rezapour
Summary: This study explores the use of dialdehyde starch nanoparticles loaded with vancomycin for the treatment of infected wounds. The synthesized dressing showed good biocompatibility and antibacterial properties against MRSA. The controlled release of vancomycin from the dressing may offer a new option for topical administration of antibiotics.
DRUG DELIVERY AND TRANSLATIONAL RESEARCH
(2022)
Article
Biotechnology & Applied Microbiology
Shushu Wang, Shan Li, Runtang Liu, Wei Zhang, Huajin Xu, Yi Hu
Summary: In this study, Candida rugosa lipase (CRL) was activated and covalently immobilized on a nanocomposite material using surfactants. The nanocomposite material, fabricated by combining magnetic nanoparticles with chitosan, proved to be an ideal support for enzyme immobilization. The immobilized CRL showed improved stability and reusability.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Sylwia Fiejdasz, Adriana Gilarska, Wojciech Horak, Agnieszka Radziszewska, Tomasz Straczek, Michal Szuwarzynski, Maria Nowakowska, Czeslaw Kapusta
Summary: Novel hybrid magnetic materials based on natural polymer matrices containing superparamagnetic iron oxide nanoparticles were successfully prepared by coating SPIONs with a chitosan derivative and linking them with a chitosan-collagen hydrogel matrix through covalent bonds. The microstructure and magnetic properties of the materials were determined by electron microscopy, scanning transmission electron microscopy, and magnetic force microscopy. Rheological studies revealed the effect of material composition on mechanical properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Engineering, Chemical
QiJie Chen, GuangYang Xie, Peng Zhang, ChunYan Liang, WenGuang Zhao, Guang Chen
Summary: A new type of green, pollution-free, renewable, and formaldehyde-free starch adhesive was prepared by oxidizing corn starch into dialdehyde starch with sodium periodate, and then grafting and cross-linking it with polyethylene glycol (PEG) and urea. The PEG-urea-dialdehyde starch adhesive showed good dry shear strength and hydrophobicity.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2023)
Article
Biochemistry & Molecular Biology
Fatemeh Valipour, Eshagh Zakipour Rahimabadi, Haniyeh Rostamzad
Summary: This study evaluated the physicochemical properties, morphology, and biocompatibility of collagen/chitosan/dialdehyde starch hydrogel. The results showed that the hydrogel had high swelling and biodegradability, making it suitable for wound healing applications.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biochemistry & Molecular Biology
Sylwia Grabska-Zielinska, Alina Sionkowska, Ewa Olewnik-Kruszkowska, Katarzyna Reczynska, Elzbieta Pamula
Summary: This study aimed to compare the physicochemical properties of three-dimensional scaffolds based on silk fibroin, collagen, and chitosan, cross-linked with dialdehyde starch (DAS) and dialdehyde chitosan (DAC). The results showed that DAS and DAC have different impacts on the properties of biopolymeric scaffolds, with DAS-crosslinked scaffolds exhibiting higher swelling ability, lower density, and lower mechanical properties compared to DAC-crosslinked scaffolds. Despite this, both types of scaffolds showed potential for use in regenerative medicine and tissue engineering, particularly in bone tissue engineering for healing small bone defects.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Food Science & Technology
Awangku Abdullah Kamarol Awg Suhai, Suk-Fun Chin
Summary: In this study, amine-modified starch (AMS) nanoparticles were successfully prepared from native sago starch (Metroxylon sagu) through a facile, economical, and aqueous-based approach. The degree of substitution of AMS was determined to be within the range of 0.9973 to 0.9984, and the mean particle sizes of AMS nanoparticles were found to be affected by the synthesis parameters. Controlled precipitation through the drop-wise addition of AMS solution into excess ethanol solution resulted in the formation of AMS nanoparticles with mean particle diameters ranged between 170 and 280 nm.
Article
Food Science & Technology
Yixi Li, Yulong Qiu, Hongman Hou, Gongliang Zhang, Hongshun Hao, Jingran Bi
Summary: This paper reports on the synthesis of amino-carboxymethyl chitosan (ACC) and dialdehyde starch (DAS) through amino carboxymethylation and oxidation reactions, respectively, and their use in the preparation of ACC/DAS hydrogels. The hydrogels exhibit good loading capacity and antibacterial properties. These results suggest that ACC/DAS hydrogel has potential in food preservation.
Article
Chemistry, Physical
Weichuan Qiao, Ziyan Zhang, Yi Qian, Lijie Xu, He Guo
Summary: In the process of enzyme immobilization using the cross-linking method, a magnetic dialdehyde cellulose (MDAC) was developed without the need for a traditional cross-linker, showing improved enzyme loading capacity and stability. The MDAC-laccase complex exhibited enhanced properties such as a wide pH range, temperature stability, reusability, and tolerance to organic solvents, inhibitors, and metal ions. Additionally, the MDAC-L demonstrated efficient magnetic separation, good decolorization performance, and maintained high enzyme activity after multiple cycles of reuse.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Nanoscience & Nanotechnology
Yu Tian, Pengfei Guan, Chaoyao Wen, Manjia Lu, Tong Li, Lei Fan, Qinfeng Yang, Youjun Guan, Xinchang Kang, Yuhe Jiang, Chengyun Ning, Rumin Fu, Guoxin Tan, Lei Zhou
Summary: In this study, an injectable biopolymer hydrogel bioadhesive incorporated with mesoporous bioactive glass nanoparticles (MBGN) was reported. The bioadhesive exhibits strong adhesion, removability and reusability at physiological temperatures, as well as excellent biocompatibility and therapeutic effects. This novel design of bioadhesive holds great potential for various medical applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Applied
Yuan Zhao, Ran Tian, Mengqi Cui, Yan Zhang, Lianzhou Jiang, Bo Tian, Xiaonan Sui
Summary: This research investigates the formation of films by crosslinking soy protein isolate (SPI) with dialdehyde starch (DAS) and examines the effect of aldehyde group content on the properties of the films. The results show that the addition of DAS improves the hydrophobicity, UV-blocking properties, and thermal stability of the films. The formation of Schiff base reactions, covalent imine bonds, and a network of hydrogen bonds contributes to these improvements. This research provides a theoretical basis for further studies on SPI-DAS composites.
FOOD HYDROCOLLOIDS
(2023)
Article
Chemistry, Applied
Zhilang Xu, Lun Yuan, Qisong Liu, Defu Li, Changdao Mu, Lei Zhao, Xinying Li, Liming Ge
Summary: In this study, dialdehyde starch-based nanoparticles were developed as a new strategy to crosslink collagen, aiming to improve its physicochemical properties. Compared to traditional dialdehyde starch crosslinked hydrogels, the dialdehyde starch nanoparticles crosslinked collagen hydrogels showed better physicochemical properties and potential application prospects in tissue engineering scaffolds.
CARBOHYDRATE POLYMERS
(2022)
Article
Chemistry, Applied
Hongmin Dong, Qing Zhang, Jun Gao, Lingyun Chen, Thava Vasanthan
Summary: Starch nanoparticles (SNPs) were prepared using ultrasonic-assisted dissolution and rapid nanoprecipitation, with different starch sources and concentrations affecting the morphological and physicochemical properties of the SNPs. Pulse SNPs demonstrated smaller and more uniform size compared to cereal SNPs, with higher amylose content leading to improved thermal stability. The molecular weight of amylopectin and amylose in SNPs was smaller and more uniform across all starch types, indicating a key role of the amylose-amylopectin ratio in determining SNP size.
FOOD HYDROCOLLOIDS
(2022)
Article
Biochemistry & Molecular Biology
Maria Belen Abdulhamid, Johan Sebatian Hero, Mariana Zamora, Maria Ines Gomez, Maria Carolina Navarro, Cintia Mariana Romero
Summary: The research investigates the immobilization of lipase using adsorption on magnetic nanoparticles, cross-linked enzyme aggregates (CLEA), and their combination. The study highlights the importance of pH and ionic strength in the immobilization process and shows that the use of functionalized support leads to the best activity performance.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)