Pumpkin Skin Polysaccharide-Zn(II) Complex: Preparation, Characterization, and Suppression of Inflammation in Zebrafish
文献类型: 外文期刊
作者: Dong, Shujun 1 ; Zhang, Bin 2 ; Ma, Yue 1 ; Chang, Hong 1 ; Zheng, Zhenjia 2 ; Zhao, Xiaoyan 1 ;
作者机构: 1.Beijing Acad Agr & Forestry Sci, Inst Agrifood Proc & Nutr, Beijing Key Lab Agr Prod Fruits & Vegetables Pres, Key Lab Vegetable Postharvest Proc,Minist Agr & R, Beijing 100097, Peoples R China
2.Shandong Agr Univ, Coll Food Sci & Engn, Shandong Higher Educ Inst, Key Lab Food Proc Technol & Qual Control, 61 Daizong St, Tai An 271018, Shandong, Peoples R China
关键词: pumpkin skin polysaccharides; zinc complex; physicochemical property; anti-inflammatory activity
期刊名称:FOODS ( 影响因子:5.561; 五年影响因子:5.94 )
ISSN:
年卷期: 2022 年 11 卷 17 期
页码:
收录情况: SCI
摘要: In this study, pumpkin (Cucurbita moschata) skin polysaccharide-zinc(II) (PSP-Zn) complex was successfully prepared. The structure and physicochemical properties of PSP and PSP-Zn were analyzed. The anti-inflammatory activity of PSP and PSP-Zn was investigated in zebrafish larvae induced by copper sulphate. PSP and PSP-Zn consisted of rhamnose, arabinose, galactose, glucose, and galacturonic acid. The molecular weight (Mw) of PSP and PSP-Zn were 3.034 x 10(6) and 3.222 x 10(6) Da, respectively. Fourier transform infrared spectrum (FT-IR) and circular dichroism (CD) analysis results suggested that the chemical modification of zinc might occur through hydroxyl groups of PSP. The PSP-Zn complex had lamellar texture, smooth surface morphology, and larger particle size. X-ray Diffraction (XRD) analysis revealed that both PSP and PSP-Zn were semi-crystalline substances. PSP-Zn solution showed superior stability in a weak acid and alkaline environment, especially at pH = 6.0. Moreover, PSP and PSP-Zn showed a good inhibitory effect on inflammation cells in zebrafish. Real-time quantitative polymerase chain reaction (RT-PCR) result suggested that the anti-inflammatory mechanism of PSP and PSP-Zn were through downregulation of the expression of nitric oxide synthase 2b (nos2b), inducible nitric oxide synthase (iNOS), interleukin-6 (IL-6), and nuclear factor-kappa B2 (NF-kappa B2). The present study indicated that PSP-Zn is expected to be a safe and efficient novel zinc supplement with anti-inflammatory activity.
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