Results 161 to 170 of about 88,833 (189)

Advances in alginate lyases and the potential application of enzymatic prepared alginate oligosaccharides: A mini review

International Journal of Biological Macromolecules
Alginate is mainly a linear polysaccharide composed of randomly arranged β-D-mannuronic acid and α-L-guluronic acid linked by α, β-(1,4)-glycosidic bonds. Alginate lyases degrade alginate mainly adopting a β-elimination mechanism, breaking the glycosidic bonds between the monomers and forming a double bond between the C4 and C5 sugar rings to produce ...
Chao Qiu, Jie Long
exaly   +3 more sources

Alginate oligosaccharides enhanced Triticum aestivum L. tolerance to drought stress

Plant Physiology and Biochemistry, 2013
Alginate oligosaccharides (AOS) prepared from degradation of alginate is a potent plant elicitor. Hydroponic experiments were carried out to investigate the mechanism of AOS on improving Triticum aestivum L resistant ability to drought stress.
Heng Yin, Xiaomin Shi, Xiao-Ming Zhao
exaly   +2 more sources

Preparation and potential applications of alginate oligosaccharides

Critical Reviews in Food Science and Nutrition, 2022
Alginate, a linear polymer consisting of β-D-mannuronic acid (M) and α-L-guluronic acid (G) with 1,4-glycosidic linkages and comprising 40% of the dry weight of algae, possesses various applications in the food and nutraceutical industries. However, the potential applications of alginate are restricted in some fields because of its low water solubility
Decheng Bi, Xu Yang, Jun Lu, Xu Xu
openaire   +2 more sources

Elucidation of degradation pattern and immobilization of a novel alginate lyase for preparation of alginate oligosaccharides

International Journal of Biological Macromolecules, 2020
Alginate lyases are important enzymes to prepare alginate oligosaccharides for industrial applications and elucidating the degradation pattern of alginate lyases is essential for expanding their applications. Herein, we cloned and expressed AlyPL6, a novel member of polysaccharide lyase family-6 (PL6) with high activity from Pedobacter hainanensis NJ ...
Qian, Li, Fu, Hu, Mingyang, Wang, Benwei, Zhu, Fang, Ni, Zhong, Yao   +5 more
openaire   +2 more sources

Preparation of alginate oligosaccharides and their biological activities in plants: A review

Carbohydrate Research, 2020
Alginate oligosaccharide (AOS) is the degradation product of alginates extracted from brown algae. As a multifunctional oligomer, it has attracted widespread attention in plant research. Different methods of preparation generate AOS possessing diverse structural properties, and result in differences in AOS activity.
Chunguang, Zhang, Wenxia, Wang, Xiaoming, Zhao, Hongying, Wang, Heng, Yin   +4 more
openaire   +2 more sources

Production of Oligosaccharide from Alginate Using Pseudoalteromonas agarovorans

Applied Biochemistry and Biotechnology, 2009
A marine bacterium was isolated from seawater near the Korean south coast for efficient saccharification from alginate. Based on 16S rDNA sequence, the isolated strain was identified as Pseudoalteromonas agarovorans. Various environmental factors affecting saccharification of alginate using P. agarovorans CHO-12 have been investigated in flask cultures.
DuBok, Choi, Yu Lan, Piao, Woon-Seob, Shin, Hoon, Cho   +3 more
openaire   +2 more sources

Process and applications of alginate oligosaccharides with emphasis on health beneficial perspectives

Critical Reviews in Food Science and Nutrition, 2021
Alginates are linear polymers comprising 40% of the dry weight of algae possess various applications in food and biomedical industries. Alginate oligosaccharides (AOS), a degradation product of alginate, is now gaining much attention for their beneficial role in food, pharmaceutical and agricultural industries.
Chunhua Zhang, Mingxi Li, Abdur Rauf, Anees Ahmed Khalil, Zhiguo Shan, Chuying Chen, Kannan R. R. Rengasamy, Chunpeng Wan   +7 more
openaire   +2 more sources

A simple method to calculate the degree of polymerization of alginate oligosaccharides and low molecular weight alginates

Carbohydrate Research, 2019
This study presents a quick, simple and accurate method to calculate the degree of polymerization (DP) of alginate oligosaccharides (AOS) and low molecular weight alginates from the concentration of reducing sugar determined by 3,5-dinitrosalicylic acid (DNS) assay. 1H NMR spectroscopy, mass spectroscopy (MS) and certified standards were used to verify
Ming, Sun, Chu, Sun, Hongguo, Xie, Shenggang, Yan, Heng, Yin   +4 more
openaire   +2 more sources

Rational design of alginate lyase ALYI1 for improving the antioxidant activity of the alginate oligosaccharides

Food Chemistry
To achieve the cost-effective alginate oligosaccharides production, we have developed a novel rational design strategy that optimized capture behavior, orientation movement and hydrogen bond interaction of substrate in alginate lyase ALYI1. This approach led to S56D and G258Q advantageous variants balancing the trade-off challenge, particularly S56D ...
Jin-Ping, Huang, Jin-Xin, Zhao, Ming-Jing, Zhang, Jiru, Han, Ya-Tong, Han, Xue-Ting, Wang, Tian-Bao, Wu, Jun-Nan, He, Cai-Mei, Chen, Yan-Xia, Zhou   +9 more
openaire   +2 more sources

Design, synthesis and biological evaluation of alginate oligosaccharide derivatives

Bioorganic & Medicinal Chemistry Letters
To discover new potential drug for acute kidney injury (AKI), a series of novel alginate oligosaccharide derivatives were synthesized and characterized by the spectroscopic analysis. By using the controlled experimental method, the target compounds were evaluated preliminarily for therapeutic activity in AKI. The results demonstrated that compounds 2a,
Wenkang Guo, Manchun Chen, Changjie Zou, Weizhi Liu, Weidong Wang, Heyong Gao   +5 more
openaire   +2 more sources