Home / Advanced Search

  • Title/Keywords

  • Author/Affliations

  • Journal

  • Article Type

  • Start Year

  • End Year

Update SearchingClear
  • Articles
  • Online
Search Results (8)
  • Open Access


    Novel Sugar Based Acrylate: Synthesis, Characterization and Polymerization


    Journal of Polymer Materials, Vol.36, No.3, pp. 207-216, 2019, DOI:10.32381/JPM.2019.36.03.1

    Abstract The present study has demonstrated that novel acrylic glycopolymers are successfully prepared by using monosaccharides containing an acrylate group (9-12). For this purpose, sugar based acrylate monomers were synthesized via ring opening method (Method B) and homopolymerization of this sugar oxypropylacrylates was performed using free radical polymerization. The characterization of all the monomers and polymers were verified by 1HNMR, 13CNMR, FTIR and GPC techniques. The Glass transition temperatures and thermal characteristics of the polymers were also analyzed by using DSC and TG techniques. The thermal stability of prepared polymers have changed with the stereochemistry of the carbohydrate moiety. Also, the… More >

  • Open Access


    The Effect of Soil Enzymes and Polysaccharides Secreted by the Roots of Salvia miltiorrhiza Bunge under Drought, High Temperature, and Nitrogen and Phosphorus Deficits

    Yong Qin1,2, Xiaoyu Li1,2, Yanhong Wu1,2, Hai Wang3, Guiqi Han1,2,3, Zhuyun Yan1,2,*

    Phyton-International Journal of Experimental Botany, Vol.93, No.1, pp. 119-135, 2024, DOI:10.32604/phyton.2023.046075

    Abstract Root exudates serve as crucial mediators for information exchange between plants and soil, and are an important evolutionary mechanism for plants’ adaptation to environmental changes. In this study, 15 different abiotic stress models were established using various stress factors, including drought (D), high temperature (T), nitrogen deficiency (N), phosphorus deficiency (P), and their combinations. We investigated their effects on the seedling growth of Salvia miltiorrhiza Bunge and the activities of Solid-Urease (S-UE), Solid-Nitrite Reductase (S-NiR), Solid-Nitrate Reductase (S-NR), Solid-Phosphotransferase (S-PT), and Solid-Catalase (S-CAT), as well as the contents of polysaccharides in the culture medium. The results showed that the growth… More >

  • Open Access


    Research Progress on Structure and Bioactivity of Longan Polysaccharide

    Xiaolong Ji1,#, Shuli Zhang1,#, Xueyuan Jin2, Xin Yuan1, Siqi Zhang1, Xudan Guo3,*, Fengcheng Shi4,*, Yanqi Liu1

    Journal of Renewable Materials, Vol.11, No.4, pp. 1631-1642, 2023, DOI:10.32604/jrm.2023.025844

    Abstract Longan originates from southern China and has high nutritional and health value. Recent phytochemistry and pharmacology studies have shown that polysaccharides are a main bioactive component of longan. Longan polysaccharides possess antioxidant, anti-aging, anti-tumor, immunomodulatory, and other bioactivities. Hot-water extraction, ethanol precipitation, and ultrasonic extraction are generally used to extract water-soluble longan polysaccharides. However, the relationship between the structure and bioactivity of longan polysaccharides remains unclear, requiring further investigation. The aim of this review is to evaluate the current literature focusing on the extraction, purification, structural characterization, and biological activity of longan polysaccharides. We believe that this review would provide… More >

  • Open Access


    The Future of Bacterial Cellulose and Other Microbial Polysaccharides

    Eliane Trovatti*

    Journal of Renewable Materials, Vol.1, No.1, pp. 28-41, 2013, DOI:10.7569/JRM.2012.634104

    Abstract Biobased polymers have been gaining the attention of society and industry because of concerns about the depletion of fossil fuels and growing environmental problems. Cellulose fi bers are one of the most promising biopolymers to be explored as a component of composite materials with emergent properties for new applications. Bacterial Cellulose (BC), a special kind of cellulose produced by microorganisms, is endowed with unique properties. In this context, this perspective offers an overview about the properties of BC that would enable it to become a commodity. This includes an appraisal of the current BC market, as compared with other available… More >

  • Open Access


    Azospirillum brasilense and Saccharomyces cerevisiae as Alternative for Decrease the Effect of Salinity Stress in Tomato (Lycopersicon esculentum) Growth

    Ali Abdelmoteleb1, Daniel Gonzalez-Mendoza2,*, Ahmed Mohamed Elbaalawy3

    Phyton-International Journal of Experimental Botany, Vol.91, No.1, pp. 21-32, 2022, DOI:10.32604/phyton.2022.016227

    Abstract The salinity stress is one of the most relevant abiotic stresses that affects the agricultural production. The present study was performed to study the improvement of the salt tolerance of tomato plants which is known for their susceptibility to salt stress. The present study aimed to assess to what extent strain Azospirillum brasilense (N040) and Saccharomyces cerevisiae improve the salt tolerance to tomato plants treated with different salt concentration. The inoculant strain A. brasilense (N040) was previously adapted to survive up to 7% NaCl in the basal media. A greenhouse experiment was conducted to evaluate the effect of this inoculation… More >

  • Open Access


    Angelica sinensis polysaccharides ameliorate 5-flourouracil-induced bone marrow stromal cell proliferation inhibition via regulating Wnt/β-catenin signaling


    BIOCELL, Vol.45, No.4, pp. 1045-1058, 2021, DOI:10.32604/biocell.2021.015039

    Abstract Chemotherapy may cause cellular oxidative stress to bone marrow. Oxidative damage of bone marrow hematopoietic microenvironment is closely related to chronic myelosuppression after chemotherapeutic treatment. Angelica sinensis polysaccharides (ASP) are major effective ingredients of traditional Chinese medicine Angelica with multi-target anti-oxidative stress features. In the current study, we investigated the protective roles and mechanisms of ASP on chemotherapy-induced bone marrow stromal cell (BMSC) damage. The human bone marrow stromal cell line HS-5 cells were divided into control group, 5-FU group, 5-FU + ASP group, and 5-FU + LiCl group to investigate the mechanism of ASP to alleviate 5-FU-induced BMSC proliferation… More >

  • Open Access


    Preparation and Properties of Guiqi Polysaccharides/Chitosan/Alginate Composite Hydrogel Microspheres

    Xiaoliang Zhao1,#, Yuting Wang1,#, Xiuying Pu1, Jianzhong Ma1, Feifan Leng1, Yonggang Wang1, Yanling Wang1, Shuhong Yang1, Fen Ran2, Weijie Zhang1,*

    Journal of Renewable Materials, Vol.7, No.12, pp. 1321-1332, 2019, DOI:10.32604/jrm.2019.07757

    Abstract A series of the Guiqi polysaccharides/chitosan/alginate composite hydrogel microspheres (GPcM) with different particle sizes were prepared with Guiqi polysaccharides (GP), chitosan (CS) and sodium alginate (Alg). The optimum preparation process was also determined by single factor and orthogonal experiment analysis. The GPcM were characterized by fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), drug loading efficiency test (LE), encapsulation efficiency test (EE) and in vitro release study. The results showed that the Guiqi polysaccharides chitosan hydrogel (GPCH) and sodium alginate hydrogel (SAH) formed a crossover system in GPcM. The GPcM have a uniform particle size ranging from 395.1μm to… More >

  • Open Access


    Optimized enzyme-assisted microwave extraction and potential inhibitory action against α-glucosidase of polysaccharides from sweet corncobs

    Ma YQ, X Wang, SH Gao, J Zhang

    Phyton-International Journal of Experimental Botany, Vol.85, pp. 79-86, 2016, DOI:10.32604/phyton.2016.85.079

    Abstract The conditions for extracting polysaccharides from sweet corncobs (SCP) were studied. Four parameters (ratio of water to raw material, compound enzyme concentration, temperature of enzymolysis and duration of enzymolysis) affecting the extraction of SCP were optimized using response surface methodology (RSM). Under the optimized conditions, the yield of SCP was 17.58 %. SCP had inhibitory effects on α-amylase and α-glucosidase activities, and the IC50 was 20.91 mg/mL and 12.47 mg/mL. SCP may therefore have prevention and treatment effects on postprandial hyperglycemia in diabetes. The inhibitory effects of SCP were improved after fractionation, and were strongest in the fraction SCP80. The… More >

Displaying 1-10 on page 1 of 8. Per Page