BMC Chemistry
·
2020
·Vol. 14
·期 1
·1-7
·
IF 0
Ye Changwen,He Chen,Zhang Bowen,Wang Lixuan,Wang Lufeng
Zizania latifolia is easily lignified after harvesting, leading to the degradation of food quality and commercial value. Thus, this study evaluated the effect of radio frequency (RF) treatments on lignification inhibition of Zizania latifolia . The results showed that the lignin content of Zizania latifolia treated with RF decreased significantly compared with the control group. At the 7th day of storage, the phenylalanine ammonia lyase activity of the 90 W RF treatment group decreased by 52.9% compared with the initial value. The activities of peroxidase and polyphenol oxidase in the stems of Zizania latifolia were significantly ( p < 0.05) decreased after RF treatments. Besides, a decrease in conversion rate of O 2 − and H 2 O 2 to downstream products was observed, indicating that the related invertases were inhibited by RF treatment. All of these showed that RF treatments contribute to inhibit or delay the lignification of Zizania latifolia , providing a better taste and quality for products.
研究领域:
植物学
·
食品科学
·
农业科学
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产品关联
DOI
PubMed
FOOD CHEMISTRY
·
2024
·
IF 8.5
Kehan Zhu,Zhen Yao,Tianyi Gu,Xianhao Jiang,Jianqin Zhou,Duxin Li
Swollen culms of Zizania latifolia possess a peculiar flavor, nutritional value and health-promoting effects. This study investigated the wound healing ability of polysaccharides isolated from Zizania latifolia (ZLP). Through in vitro assays, ZLP demonstrated negligible cytotoxicity and promoted the migration and phagocytosis of Staphylococcus aureus by macrophages where ZLP-2 had a significantly greater effect. Moreover, ZLP-2 has a higher purity and molecular weight, an integral and large lamellar morphology, and a larger particle size in solution, suggesting its ability to form films. Thus, ZLP-2 was fabricated as a gel formulation for topical application. The in vivo results showed that the ZLP-2 gel had significantly greater effects than did the autonomous healing process according to quantitative analysis of the wound closure area. The ZLP-2 gel decreased the levels of TNF-α and IL-6 in wounded tissue. Furthermore, the quantification of the molecular indexes via qRT-PCR revealed that the levels of tnf-α, tgf-β, mcp-1, ifn-γ, inos, and vegf in the treated group increased during the inflammatory and proliferation stages but decreased after wound closure. These results suggest that ZLP-2 has great potential in pharmaceutical applications for wound care.
研究领域:
药理学
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伤口愈合
·
多糖研究
·
炎症
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产品关联
DOI
PubMed
高影响因子
MOLECULES
·
2019
·Vol. 24
·期 9
·1681
·
IF 3.06
Mei-Jun Chu,Yong-Mei Du,Xin-Min Liu,Ning Yan,Feng-Zhong Wang,Zhong-Feng Zhang
Due to the importance of proanthocyanidin bioactivity and its relationship with chemical structure, ultrasound-assisted extraction and purification schemes were proposed to evaluate the proanthocyanidin content and analyze the structural composition and potential bioactivities of different proanthocyanidin fractions from Chinese wild rice (Zizanialatifolia). Following an optimized extraction procedure, the crude wild rice proanthocyanidins (WRPs) were purified using n-butanol extraction, chromatography on macroporous resins, and further fractionation on Sephadex LH-20 to yield six specific fractions (WRPs-1–WRPs-6) containing proanthocyanidin levels exceeding 524.19 ± 3.56 mg/g extract. Structurally, (+)-catechin, (−)-epicatechin, and (−)-epigallocatechin were present as both terminal and extension units, and (−)-epicatechin was the major extension unit, in each fraction. This is the first preparation of WRP fractions with a different mean degree of polymerization (mDP), ranging from 2.66 ± 0.04 to 10.30 ± 0.46. A comparison of the bioactivities of these fractions revealed that fractions WRPs-1−WRPs-5 had significant DPPH radical scavenging activities, whereas fraction WRPs-6 with a high mDP showed better α-glucosidase and pancreatic lipase inhibitory effects. These findings should help define possible applications of WRPs to functional foods or nutraceuticals.Keywords:wild rice;Zizania latifolia;proanthocyanidins;extraction;purification;fractionation;degree of polymerization;bioactivities
研究领域:
食品科学
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植物化学
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营养保健品
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生物活性化合物
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Shuwei Yuan,Miaomiao Zhang,Zhen Yao,Jiangyun Liu,Xiang Li,Zhenqing Zhang,Duxin Li
The swollen culm (also known as Jiaobai) of Zizania latifolia is formed by the smut Ustilago esculenta invades the Z. latifolia . The new tissue formed due to the symbiotic relationship has entices the attention of researchers to study its polysaccharide structure along with biological evaluation. Five fractions of polysaccharides were obtained owing to hot water extraction, alcoholic precipitation, and chromatographic purification. Bioactivity assays showed that ZLPs have good antioxidant, hypoglycemic activities and protective activity against oxidative damage. The ZLP-1 and ZLP-2 were determined to be neutral polysaccharides with high purity, exhibiting propitious bioactivity, consequently they were subjected to indispensable structural characterization. These results showed that ZLP-1 has molecular weight (Mw) of 103 kDa and glucose (Glc) (76.68 %) as the primary monosaccharide; the ZLP-2 has Mw of 122 kDa and galactose (Gal) (41.04 %) and arabinose (Ara) (27.12 %). Structural elucidation by methylation and nuclear magnetic resonance (NMR) analysis suggested ZLP-1 is a glucan, with →3)-β-Glc p -(1→3)-β-Glc p -(1→4)-β-Glc p -(1→4)-β-Glc p -(1→3,6)-β-Gal p -(1→3)-β-Glc p -(1→ as the mainchain and the terminal Ara f and Glc p ; the ZLP-2 is a Galactoxylan, with →3,4)-β-xyl p -(1→3)-β-Gal p -(1→3,6)-β-Gal p -(1→3,6)-β-Gal p -(1→ as the mainchain and the terminal Ara f and Glc p . The structural arrangements provide a chemical basis for understanding the nutritional and pharmacological activities of polysaccharides from Zizania latifolia .
研究领域:
生物化学
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药理学
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植物科学
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DOI
PubMed
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2019
·Vol. 19
·期 2
·1026-1034
·
IF 1.093
Li Qiuyun,Song Weili,Habimana Nelson,Wu Xi-Lin,Zhong Shuxian,Lin Hongjun,Chen Jianrong
Nitrogen doped nanoporous activated carbon (N-NPAC) was prepared via the facile and effective KOH activation method using Zizania latifolia (ZL), a common Chinese aquatic vegetable, as the raw material. The biomass derived N-NPAC exhibited high content of nitrogen (18.4 at%), large
surface area (1493.4 m2/g) and abundant nanopores. The unique physical–chemical structure endows the N-NPAC with great application potential in adsorbents. The performance of the N-NPAC for the adsorptive removal of bisphenol A (BPA) was studied. The results showed the adsorption
processes were barely affected by solution pH. The adsorption kinetics are well-fitted by the pseudo-second-order kinetic model and the adsorption isotherms followed the Langmuir isotherm model. The maximum adsorption capacity calculated by the Langmuir isotherm model is 555.5 mg/g at 313
K, demonstrating the promise of the N-NPAC for the application in water cleanup. This study provides an example using the inexpensive and abundantly available biomass as the raw materials for the large scale production of nanocarbons and paves an avenue for the development of bio-derived nanomaterials.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Dan Zhang,Kai Zhou,Chenqi Liu,Xiujuan Li,Siyi Pan,Lan Zhong
The dissipation, uptake, translocation and accumulation of phthalic acid esters (PAEs) including diallyl phthalate (DAP), diisobutyl phthalate (DIBP), dibutyl phthalate (DBP), benzyl butyl phthalate (BBP) and di-(2-ethylhexyl) phthalate (DEHP) in sediment- Zizania latifolia system were investigated by gas chromatography-flame ionization detector after a QuEChERS pretreatment method. The dissipation rates of PAEs in sediment were positively correlated with exposure time, and more than 68.12% of PAEs in sediment were decreased after 28 d even when the spiked contents were extremely high. All the five PAEs could be taken up by roots from contaminated sediment and subsequently be transported into stems and leaves. There were significant linear correlations between the sediment content and the content in each tissue. DEHP was most readily transported from sediment to roots and stems, followed by BBP, DBP, DIBP and DAP, whereas the order of transportation from roots to leaves was reversed. During 28 d of exposure, the average concentration of each PAE in stems was the highest, followed by roots, leaves and edible parts. DEHP and BBP were the major contaminants in edible parts but could not pose a risk to human health. The accumulation of PAEs in edible parts was influenced by the species and concentration of PAEs as well as the survival time and harvest time of edible parts. The differences in uptake and translocation behaviors among PAEs in plant tissues were significantly correlated to their physicochemical properties , such as alkyl chain length and octanol/water partition coefficient (logK ow ). The results reveal that Zizania latifolia is not only a kind of safe food, but also a potential plant to remediate contaminated sediment by accumulating and degrading PAEs from the habitats.
研究领域:
环境科学
·
植物学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）