AUTHOR=Ji Xiaolong , Wang Zhiwen , Hao Xiyu , Zhu Yingying , Lin Yan , Li Guoli , Guo Xudan 

TITLE=Structural characterization of a new high molecular weight polysaccharide from jujube fruit

JOURNAL=Frontiers in Nutrition

VOLUME=9

YEAR=2022

URL=https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2022.1012348

DOI=10.3389/fnut.2022.1012348

ISSN=2296-861X

ABSTRACT=<p>From <italic>Ziziphus Jujuba</italic> cv. <italic>Muzao</italic> fruit, a new polysaccharide (PZMP3-1) with high molecular weight was isolated. Constructional characterization revealed that PZMP3-1 comprized 2.56 rhamnose, 7.70 arabinoses, 3.73 galactose, and 6.73 galactose, and it has a 241 kDa average molecular weight. The principal structural components of PZMP3-1 were 1,2,4 and 1,4-linked Gal<italic>p</italic>A, 1,4-linked Gal<italic>p</italic>, 1,3 and 1,5-linked Ara<italic>f</italic>, and 1-linked Rha<italic>p</italic> based on methylation and nuclear magnetic resonance spectroscopy (NMR) analyses. X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FT-IR), atomic force microscopy (AFM), and scanning electron microscopy (SEM) structural analysis of PZMP3-1 revealed a tangled and branching pattern. Overall, these structural results suggested that PZMP3-1 could have unique bioactivities and be widely used in nutritional supplements.</p>