Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands. Electronic address:
Published: February 2017
AI Article Synopsis
Article Abstract
The extraction of polysaccharides by autohydrolysis of spent coffee grounds (SCG) was studied. Experimental assays were performed using different temperatures (160-200°C), liquid/solid ratios (5-15ml water/g SCG) and extraction times (10-50min) in order to determine the conditions that maximize the extraction of polysaccharides with high antioxidant activity. Autohydrolysis was demonstrated to be an efficient technique to recover antioxidant polysaccharides from SCG. The best process conditions consisted in using 15ml water/g SCG, during 10min at 160°C. The polysaccharides obtained under these conditions were mainly in the form of galactomannans and arabinogalactans. They presented high antioxidant activity (assessed by four different methods), were thermostable in a large range of temperature, and had a typical carbohydrate pattern, being of interest for industrial applications, mainly in the food area.
Department of Food Nutrition and Health, School of Medicine and Health, Faculty of Life Sciences and Medicine, Harbin Institute of Technology, Harbin 150001, PR China; Zhengzhou Research Institute, Harbin Institute of Technology, Zhengzhou 450003, PR China; National and Local Joint Engineering Laboratory for Synthesis, Transformation and Separation of Extreme Environmental Nutrients, Harbin Institute of Technology, Harbin 150001, PR China. Electronic address:
Allium chinense G. Don waste (ACGD) has an abundance of polysaccharides (ACGDP). Therefore, in this study, a method for extraction of ACGDP from ACGD by ultrasonic-assisted hot water extraction (UAE) based on ultrasonic cleaning equipment was developed.
Background: Pneumococcal disease, caused by Streptococcus pneumoniae, imposes a significant global health burden, particularly affecting vulnerable groups such as the elderly and immunocompromised. The 23-valent pneumococcal polysaccharide vaccine (PPV23) is designed to protect against 23 serotypes of Streptococcus pneumoniae. However, there is ongoing debate about its effectiveness in reducing all-cause mortality.
College of Life Sciences, Engineering Research Center of Bioreactor and Pharmaceutical Development, Ministry of Education, Jilin Agricultural University, Changchun 130118, Jilin, PR China.
() residues polysaccharide (FVRP) is a high molecular weight polysaccharide with diverse bioactivities extracted from residues (FVR). However, high molecular weight polysaccharides have been shown to face significant challenges in crossing the cell membrane barrier, thereby limiting their absorption and application in the body. Therefore, an ultrasonic-assisted HO-Fe method was employed for the first time to degrade FVRP, resulting in the production of a new polysaccharide, FVRPF.
Foreign body reaction (FBR), an immune-mediated complex healing process, plays a crucial role in integrating implants into the body. Macrophages, as the first line of immune system interaction with implant surfaces, play a bidirectional role in modulating the inflammation-regeneration balance. For a deep understanding and the evaluation of the reactions between implant materials and immune responses, reliable in vitro methods and protocols are pivotal.
Ophiopogon japonicus (O. japonicus) has a history of thousands of years as herbal medicine and nutritional food in China. Polysaccharides are one of the main bioactive components of O.
