Mo Yang, Hao Gong, Cheng-gong Jiang, Yu He, Shuai Wang, Yi Zheng, Jin-hui Hou, Wei-dong Wang
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Effects of different extraction methods on the structure and function of blackberry seed polysaccharides
The different extraction methods including hot-water extraction, ultrasound-assisted extraction, and microwave-assisted extraction, enzyme-assisted extraction, ultrasound and microwave-assisted extraction, and ultrasound and enzyme-assisted extraction (UEE) methods were carried out to extract blackberry seed polysaccharides (BSPs). The extraction yield, structure, antioxidant capacity, and glucometabolic enzyme inhibition activities of BSPs were determined in this work. Extraction methods have no influence on the monosaccharide composition of BSPs but affected the molar ratio of monosaccharides. Fourier transform infrared spectroscopy and X-ray diffraction results showed that the extraction method cannot effect on the functional groups and crystal forms of BSPs. The findings also revealed that UEE led to the highest BSP extraction yield (4.56%), highest antioxidant capacities, and highest α-amylase (48.49%) and α-glucosidase (67.33%) inhibitory rates, which may because of the dispersed molecular weight distribution and loose microstructure of BSPs. These results suggest that UEE may be used in the industry to obtain BSPs with high functional activities.
期刊介绍:
The International Journal of Food Science & Technology (IJFST) is published for the Institute of Food Science and Technology, the IFST. This authoritative and well-established journal publishes in a wide range of subjects, ranging from pure research in the various sciences associated with food to practical experiments designed to improve technical processes. Subjects covered range from raw material composition to consumer acceptance, from physical properties to food engineering practices, and from quality assurance and safety to storage, distribution, marketing and use. While the main aim of the Journal is to provide a forum for papers describing the results of original research, review articles are also welcomed.