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Physicochemical Properties, Antioxidant and Antidiabetic Activities of Polysaccharides from Quinoa (Chenopodium quinoaWilld.) Seeds
Tan, Minghui1,2; Chang, Senlin1,2; Liu, Jianing1; Li, Hang1,2; Xu, Pengwei1,2; Wang, Peidong1,2; Wang, Xiaodong1; Zhao, Mingxia1; Zhao, Bing1; Wang, Liwei1; Zhao, Qingsheng1
2020-09-01
Source PublicationMOLECULES
Volume25Issue:17Pages:18
AbstractQuinoa is known for its rich nutrients and bioactive compounds. In order to elucidate the preliminary structural characteristics and biological activity of polysaccharides from quinoa (QPs), five crude polysaccharides (QPE50, QPE60, QPE70, QPE80 and QPE90) were successively fractionated by gradient ethanol, and their physicochemical properties, antioxidant and antidiabetic activities were analyzed. The results implied that their total sugar contents were 52.82%, 63.69%, 67.15%, 44.56%, and 41.01%, and their weight-average molecular weights were 13,785 Da, 6489 Da, 4732 Da, 3318 Da, and 1960 Da, respectively. Glucose was a predominantly monosaccharide in these QPs, which together in QPE50, QPE60, QPE70, QPE80, and QPE90, respectively, made up 94.37%, 87.92%, 92.21%, 100%, and 100% of the total polysaccharide. Congo red test showed that all five QPs contained triple-helix structure. The Fourier transform-infrared spectroscopy (FT-IR) and X-ray diffractometry (XRD) results suggest that the QPs form a semi-crystalline polymer constituted typical functional groups of polysaccharide including CO, CH and OH. The thermogravimetric analysis (TGA) of QPs showed that weight loss was at about 200 degrees C and 320 degrees C. The observation from scanning electron microscope (SEM) and atomic force microscope (AFM) image indicated that the morphology of QPs exhibited spherical shape. Antioxidant and antidiabetic assay exhibited that all five QPs samples had certain antioxidant and antidiabetic activities, and QPE90 showed the best antioxidant and antidiabetic activity. Overall, QPs present a promising natural source of food antioxidants and antidiabetic agents.
KeywordChenopodium quinoaWilld polysaccharide fractional precipitation antioxidant antidiabetic
DOI10.3390/molecules25173840
Language英语
WOS KeywordSTRUCTURAL-CHARACTERIZATION ; CHAIN CONFORMATION ; ALPHA-GLUCOSIDASE ; GLYCEMIC INDEX ; AMYLASE ; PECTIN ; WATER ; EXTRACTION ; LENTINAN ; QUALITY
Funding Project[HNYH-2017-80] ; [4TB202007]
WOS Research AreaBiochemistry & Molecular Biology ; Chemistry
WOS SubjectBiochemistry & Molecular Biology ; Chemistry, Multidisciplinary
WOS IDWOS:000569955200001
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/42116
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Liwei; Zhao, Qingsheng
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Div Bioresources & Hlth Prod Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Tan, Minghui,Chang, Senlin,Liu, Jianing,et al. Physicochemical Properties, Antioxidant and Antidiabetic Activities of Polysaccharides from Quinoa (Chenopodium quinoaWilld.) Seeds[J]. MOLECULES,2020,25(17):18.
APA Tan, Minghui.,Chang, Senlin.,Liu, Jianing.,Li, Hang.,Xu, Pengwei.,...&Zhao, Qingsheng.(2020).Physicochemical Properties, Antioxidant and Antidiabetic Activities of Polysaccharides from Quinoa (Chenopodium quinoaWilld.) Seeds.MOLECULES,25(17),18.
MLA Tan, Minghui,et al."Physicochemical Properties, Antioxidant and Antidiabetic Activities of Polysaccharides from Quinoa (Chenopodium quinoaWilld.) Seeds".MOLECULES 25.17(2020):18.
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