INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Li Wan,Xiang-Long Ding,Bo Liu,Yue-Fei Zhang,Jin-Rong Zhong,Yi-Min Dai
This study investigated anionic guar gum derivatives as dual-purpose inhibitors for methane hydrate formation and metal corrosion in oil and gas pipelines. Sulfonated guar gum (SHG), phosphorylated guar gum (PGG), and guar gum grafted acrylamide (GG-g-PAM) were synthesized and evaluated for their kinetic hydrate inhibition and corrosion inhibition properties. The results demonstrated that all anionic guar gums exhibited superior inhibition effects compared to native guar gum and polyvinylpyrrolidone (PVP), with GG-g-PAM achieving the highest maximum subcooling of 10.47 °C at the concentration of 0.5 wt%. SHG showed the most pronounced effect during the hydrate growth stage, and exhibited the best corrosion inhibition efficiency as well, with a significant inhibition efficiency (>92 %) at 0.5 wt%, surpassing other additives and a commercial imidazoline inhibitor. The formation of a protective film on carbon steel, enhanced by anionic groups, was confirmed through increased contact angles and reduced corrosion rates. Electrochemical impedance spectroscopy (EIS), polarization curves and SEM-EDX spectra further substantiated the effectiveness of the anionic guar gums in preventing carbon steel corrosion in CO 2 -saturated environments. The findings underscore the potential of anionic guar gum, particularly SHG, as a sustainable and effective bio-based additive for simultaneous hydrate inhibition and corrosion protection in oil and gas pipelines.
研究领域:
材料科学
·
化学工程
·
石油工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SCIENTIA HORTICULTURAE
·
2019
·
IF 1.961
Qihui Huang,Xiaochen Qian,Tianjia Jiang,Xiaolin Zheng
The effect of chitosan (CH) (1%) along with guar gum (GG) (5, 15, and 25%) on the quality of shiitake mushroom ( Lentinus edodes ) stored at 4 ± 1 °C for 16 days was investigated. The results indicated that shiitake mushroom coated with CH 1% + GG 15% maintained higher tissue firmness, and slowed the rate of declines in soluble protein and ascorbic acid , as well as increases in total soluble solids, reducing sugar, malondialdehyde (MDA), and electrolyte leakage. Similarly, the effect of CH 1% + GG 15% coating in improving the overall quality of shiitake mushroom was identified through sensory evaluation. Moreover, the result of transmission electron microscopy (TEM) showed that subcellular elements could be scarcely observed in uncoated mushrooms at the end of storage, and destructive symptoms in shiitake mushroom were significantly mitigated by the CH 1% + GG 15% coating. Thus, it was suggested that the CH 1% + GG 15% coating might be used commercially for maintaining the quality of shiitake mushroom during long-term storage.
研究领域:
食品科学
·
植物学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2018
·
IF 4.946
Dandan Li,Yao Zhang,Na Yang,Zhengyu Jin,Xueming Xu
This study aimed to improve induced electric field (IEF)-assisted hydrolysis of polysaccharide by controlling electrical conductivity. As the conductivity of reaction medium was increased, the energy efficiency of IEF was increased because of deceased impedance, as well as enhanced output voltage and temperature, thus the hydrolysis of guar gum (GG) was accelerated under IEF. Changes in weight-average molecular weight (Mw) suggested that IEF-assisted hydrolysis of GG could be described by the first-order kinetics 1/Mw ∝ k t, with the rate constant ( k ), varying directly with the medium conductivity. Although IEF-assisted hydrolysis largely disrupted the morphological structure of GG, it had no impact on the chemical structure. In comparison to native GG, the steady shear viscosity of hydrolyzed GG dramatically declined while the thermal stability slightly decreased. This study extended the knowledge of electrical conductivity upon IEF-assisted acid hydrolysis of GG and might contribute to a better utilization of IEF for polysaccharide modification.
研究领域:
食品科学
·
生物化学
✓ 已验证
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Peng Shi,Shibin Wang,Yipeng Li,Xuhua Xia,Li Bao,Shan Xu
The adsorption and desorption of guar gum on quartz surfaces are particularly concerned in mineral flotation and hydraulic fracturing. The adsorption capacity of GG, HPG, CMG, and CGG in quartz was quantitatively studied by spectroscopy. The adsorption mechanism and desorption of four different structures of guar gum on the quartz surface were investigated using zeta potential, XPS, and adhesion work. The adsorption morphology of guar gum on the quartz surface was studied by AFM. The results showed that the adsorption capacity was CGG > GG > HPG > CMG. The adsorption capacity was reduced after adding urea. There were hydrogen bonding interactions between the four types of guar gum structures and quartz surfaces. There was electrostatic repulsion between the CMG and quartz surfaces and electrostatic attraction was observed between the CGG and quartz surfaces. The adsorption of guar gum with four structures on the surface of quartz was more inclined to the upright form with multiple adsorption sites. Urea preferentially occupied the adsorption sites on quartz surfaces and inhibited the hydrogen bonding between guar gum and quartz surfaces. The research results have practical significance for the related study of the adsorption and desorption of guar gum on mineral surfaces.
研究领域:
矿物学
·
材料科学
·
界面化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Foods
·
2024
·Vol. 13
·期 20
·3295
·
IF 4.7
Kok Bing Tan,Meixia Zheng,Junyan Lin,Yujing Zhu,Guowu Zhan,Jianfu Chen
Loquat leaf extract (LLE) was added to guar gum and pullulan as an environmentally friendly packaging film (GPE) to preserve Chinese water chestnuts (CWCs). The effect of the amount of LLE on the guar gum/pullulan composite film was investigated. The optimal amount of LLE was 4% (GPE4), with lower water vapor permeability (WVP) and greater mechanical strength, antioxidant, and comparable antibacterial performance than many pullulan-based films. Upon packing the CWCs for 4 days, the weight loss rate of GPE4 was only 1.80 ± 0.05%. For GPE4, the POD activity, the soluble solid content, and the vitamin C (Vc) content of the CWCs were 21.61%, 36.16%, and 26.22% higher than those of the control sample, respectively. More importantly, GPE4 was effective in preserving the quality of CWCs after 4 days of storage, better or at least comparable to non-biodegradable plastic wrapping (PE). Therefore, it can be concluded that GPE films hold significant promise as a sustainable alternative packaging material for preserving fruit-based foods like CWCs, potentially replacing PE in the future.
研究领域:
食品科学
·
包装工程
·
植物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Biomaterials Science & Engineering
·
2018
·
IF 4.432
Xiaofeng Pan,Qinhua Wang,Dengwen Ning,Lei Dai,Kai Liu,Yonghao Ni,Lihui Chen,Liulian Huang
Recently, flexible, injectable, and strain-sensitive hydrogels have attracted great research interest for application as electronic skin and wearable strain sensors. The synergistic integration of high flexibility, rapid self-healing, and antifreezing properties makes injectable, strain-sensitive, and self-healing guar gum hydrogels still a great challenge. Here, inspired by the strong hydrogen bonding of glycerol and water, the chelation cross-linking between glycerol and borax, we constructed a compact three-dimensional dynamic cross-linked net formed of glycerol–water–borax. Under stress, dynamic interactions of glycerol–water–borax net act as sacrificial bond energy for effective dissipation, which enables the hydrogel to achieve high flexibility, stretchability, and injectability. More importantly,because of the presence of glycerol, the antifreeze and moisturizing properties of the gel are improved. The hydrogel also exhibited an ultrafast self-healing ability of only 15 s. In addition, the results show that the hydrogel has self-adhesive properties and strain sensitivity. The hydrogels have the potential to be used to make flexible, wearable, and 3D-printable electronic skin and strain-sensitive sensors.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2020
·
IF 2.369
Yuhua Niu,Xingxing Han,Liangxian Huang,Jie Song
A novel degradable interpenetrating network hydrogel based on poly(vinyl alcohol) (PVA), potassium humate (KHA), and guar gum (GG) was successfully prepared via aqueous solution polymerization for the efficient adsorption and removal of methylene blue (MB) dye and Pb(II). The PVA/KHA/GG adsorbent was characterized using Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction, thermogravimetric analysis, zeta analysis, and scanning electron microscopy. Adsorption kinetics, pseudo-second-order equations, and activation energy (Ea) calculations illustrated that there was physisorption and chemisorption of both MB and Pb(II). Moreover, batch adsorption results were best suited to the Langmuir model; the maximum adsorption capacity (qm) for MB and Pb(II) at optimum conditions was 1166.73 and 625.21 mg/g, respectively. The results of thermodynamic analysis demonstrated that the adsorption of MB and Pb(II) onto PVA/KHA/GG was an endothermic and spontaneous process, driven by an increase in entropy. Furthermore, both FT-IR and X-ray photoelectron spectroscopy studies confirmed that the possible mechanism by which Pb(II) was removed mainly occurred via chemisorption of the anionic groups, whereas the adsorption of MB took place via physisorption through H-bonding, electrostatic interactions, and π–π stacking. Note that the adsorbent can be readily regenerated and efficiently reused for several cycles.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2019
·
IF 5.839
Cuihua Chang,Yali Xu,Mingcheng Shi,Yujie Su,Xin Li,Junhua Li,Yanjun Yang
The effects of dry-heat treatment (75 °C, 0–20 d) and guar gum (GG) composition on foaming properties and baking performance of egg white powder (EWP) were investigated. Rheological measurement showed that both dry-heat treatment and GG addition can improve the viscosity of EWP dispersion. The particle diameter of EWP dispersion decreased after dry-heat treatment, while hydrophobicity increased, indicating that the increased viscosity was caused by the enhanced hydrophobic interaction rather than particle induced steric hindrance. The sample undergoing 10 days of dry heating with GG addition performed the best foaming properties (foaming capacity 9.37 ± 0.26 mL/g and foaming stability 96 ± 1.56%). However, without GG addition, 10 days of dry heating just induced the foaming capacity and stability increasing from 5.17 ± 0.65 mL/g and 42.85 ± 2.90% to 6.96 ± 0.09 mL/g and 64.95 ± 3.04%, respectively. The sample EWP 10 + GG also exhibited the largest cake specific volume and uniform distribution of foams in cross section, which was observed in all three baking systems (low, middle and high sugar). In low sugar system, GG addition induced an increase in cake specific volume from 3.72 ± 0.02 mL/g to 4.55 ± 0.16 mL/g. The results revealed that combining dry-heat and GG addition can more effectively enhance foaming capacity and baking performance of EWP powder, providing guidance for its efficient application in baking industry.
研究领域:
食品科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF BIOMATERIALS APPLICATIONS
·
2018
·
IF 2.082
Yude Liu,Lian Rao,Hongguan Zhang,Yanyou Cen,Kaili Cheng
Herb borneol is usually used in clinics for the treatment of central nervous system illness, for its ability of blood–brain barrier permeability, although its poor water solubility and poor bioavailability limit its clinical application to some degree. In this study, we developed a novel nanoparticle combining the benefits of vitamin E d-ɑ-tocopheryl poly(ethylene glycol) succinate (E-TPGS) (or TPGS) and guar gum to get TPGS-g-guar gum as a drug delivery system to carry borneol, which could improve the solubility of borneol and increase the drug-loading capacity efficiently. The results showed that TPGS-g-guar gum nanoparticles delivery system was suitable to carry borneol and release the drug effectively, and TPGS-g-guar gum/borneol nanoparticles would be a potential platform for improving the treatment of central nervous system illness and cerebrovascular disease.
研究领域:
药剂学
·
神经科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Na Li,Yuping Fan,Xianshu Dong,Qingxia Liu,Xiaomin Ma,Ruxia Chen
In this study, in order to improve the flocculation efficiency of natural organic flocculant in coal mine wastewater, guar gum (GG) and [2-(methacryloyloxy) ethyl] trimethyl ammonium chloride (DMC)were used to synthesize a type of graft copolymer of GG with DMC (GG-g-DMC) with flocculating function by free radical polymerization under ultraviolet (UV) light initiation conditions. Performance testing and structural characterization of the composites including FTIR, NMR, XRD, SEM, TG, and XPS were conducted to verify the synthesis of the graft polymer. The GG-g-DMC was applied to treat coal mine wastewater, according to the sedimentation index and the optimal flocculation solution was determined, and the flocculation settling mechanism was studied using focused beam reflectance measurement (FBRM), Zeta potentiometer and adhesion force meter. The results indicated that GG-g-DMC synthesis by UV-initiated polymerization was feasible and the settling effect increased significantly; 0.5 mg/g (s) GG-g-DMC 4 was excellent in all aspects, its sedimentation speed reached 20.64 cm/min, the light transmittance was 95.00%, and the compression layer thickness was 1.89 cm; the mechanism is mainly the synergy of charge neutralization, bridging, and improve hydrophobicity.
研究领域:
环境科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2020
·
IF 5.162
Menglong Chu,Nianrong Feng,Hu An,Guanglin You,Changshun Mo,Hongyang Zhong,Liuru Pan,Dongying Hu
A simple and feasible method was adopted to construct the antibacterial and pH response of cationic guar gum (CGG) composite films (CGG-HEC, RC) through using hydroxyethyl cellulose (HEC) as an enhancer and red cabbage (RC) as a smart active substance. The effect of different HEC content on the binary composite films (CGG-HEC) performance shows that the highest tensile strength (51.59 MPa) can be obtained by adding 10% HEC due to the good compatibility between CGG and HEC. The ternary composite film (RC3) with 10% HEC and 3% RC addition has good performance in all aspects, such as high tensile strength (65.41 MPa), appropriate water vapor transmission coefficient (1.08), and good thermodynamic stability. In addition, RC3 has good antibacterial properties against E. coli and Staphylococcus aureus , taking advantage of the antibacterial properties of CGG and RC. RC3 can respond to changes in environmental pH and has a significant color change, and also has a significant color change when detecting the deterioration of pork and soy milk. Therefore, the ternary composite film (RC3) has good mechanical properties, antibacterial and intelligent response characteristics, and may be used in intelligent antibacterial packaging.
研究领域:
材料科学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Yanjun Tang,Xinqi Zhang,Ruonan Zhao,Daliang Guo,Junhua Zhang
Nanocrystalline cellulose (NCC) has shown great potential for reinforcing nanocomposite systems, particularly in biopolymer-based nanocomposites. In the present work, transparent and biodegradable chitosan (CH)/guar gum (GG)/NCC nanocomposite films were designed and prepared. The effect of NCC loadings on the rheological behavior of the as-prepared nanocomposite suspensions was investigated, the overall properties of the resultant nanocomposite films as a function of various amounts of NCC were determined, and the surface morphology of various nanocomposite films was characterized by scanning electron microscopy (SEM). Results indicated that the increased NCC loadings increased the shear viscosity of the nanocomposite suspensions. Moreover, as expected, the obtained CH/GG/NCC nanocomposite films were found to exhibit improved tensile strength and reduced air permeability in comparison to pure CH/GG films. This work supported the conclusion that NCC was effective in reinforcing the CH/GG composite films, which may be a promising material for food packaging applications.
研究领域:
材料科学
·
食品科学
✓ 已验证
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）