ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2017
·Vol. 24
·期 23
·18946-18952
·
IF 2.741
Liu Xiaoyan,Cao Liya,Wang Qian,Zhang Xinying,Hu Xiaoxin
Tea saponin (TS), a kind of green biosurfactant produced by plants, was added into the Cd–pyrene co-contaminated soils to evaluate its influence on phytoremediation of Cd and pyrene by Lolium multiflorum . The results showed that the accumulation of pyrene in L. multiflorum was significantly promoted by the TS. Compared with no TS treatments (PL and ML), the aboveground concentrations of pyrene in TS treatments (PLT and MLT) increased by 135 and 30%, respectively, and the underground concentrations of pyrene in TS treatments (PLT and MLT) increased by 40 and 25%. The concentrations of Cd in the aboveground and underground parts in single contaminated treatments were all significantly more than those in co-contaminated treatments, while the situation of pyrene was quite the reverse. Besides, the addition of TS enhanced activities of dehydrogenase and polyphenol oxidase in soils and increased the biomass of L. multiflorum . The micromorphology of L. multiflorum was not affected by TS. The study suggests that the use of L. multiflorum with TS is an alternative technology for remediation of Cd–pyrene co-contaminated soils.
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
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2015
·Vol. 23
·期 6
·5705-5711
·
IF 2.828
Wang Qian,Liu Xiaoyan,Zhang Xinying,Hou Yunyun,Hu Xiaoxin,Liang Xia,Chen Xueping
Tea saponin (TS), a kind of biodegradable surfactant, was chosen to improve the accessible solubilization of pyrene and cadmium (Cd) in co-contaminated soils cultivated Lolium multiflorum . TS obviously improved the accessibility of pyrene and Cd for L. multiflorum to accelerate the process of accumulation and elimination of the pollutants. The chemical forms of Cd was transformed from Fe-Mn oxides and associated to carbonates fractions into exchangeable fractions by adding TS in single Cd and pyrene-Cd contaminated soils. Moreover, the chemical forms of pyrene were transformed from associated fraction into bioaccessible fraction by adding TS in pyrene and pyrene-Cd contaminated soils. In pyrene-Cd contaminated soil, the exchangeable fraction of Cd was hindered in the existence of pyrene, and bioaccessible fraction of pyrene was promoted by the cadmium. Besides, in the process of the pyrene degradation and Cd accumulation, the effect could be improved by the elongation of roots with adding TS, and the microorganism activity was stimulated by TS to accelerate the removal of pollutions. Therefore, Planting L. multiflorum combined with adding TS would be an effective method on the phytoremediation of organics and heavy metals co-contaminated soils.
研究领域:
环境科学
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植物学
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DOI
PubMed
高影响因子
JOURNAL OF SEPARATION SCIENCE
·
2025
·Vol. 48
·期 1
·e70082
·
IF 2.8
Bincheng Gong,Lingqi Shen,Yu Wang,Zuguang Li,Guohua Zhu
Tea saponin has garnered tremendous interest for its potential use in surfactant and drug synthesis. This research was designed to develop a technique based on pH-responsive switchable deep eutectic solvents (SDESs) for extracting tea saponins from Camellia oleifera seed meal. SDES synthesized from hexanoic acid and triethanolamine (1:1 molar ratio) offered the optimum extractive performance and the optimal conditions were obtained through single-factor experiments: 30 wt% water content in SDES, solid-liquid ratio of 1:30 g/mL, 60°C extraction temperature, 30 min extraction time, and acid volume of 1500 µL. The extraction yield was 162.14 mg/g after optimization, which increased by 15.65% and 9.47% compared to water and ethanol extraction methods, respectively. After pH adjustment, 98.95% of the tea saponins were recovered in the bottom phase. After precipitation and freeze-drying procedures, the purity of the tea saponin solid was 62.9%.
研究领域:
食品科学
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环境科学
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植物化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2021
·
IF 6.165
Yue Sun,Minting Zou,Changyi Li,Xiaoran Li,Taoyan Mao,Cheng Zheng
Due to the benign features of biosurfactants such as their low toxicity and desirable biodegradability, there has been growing interest in developing these materials for environmental remediation applications. In this work, the relationship between the temperature and the solubilization of tea saponin was investigated via critical micelle concentration (CMC), particle size, and thermodynamics measurements. In addition, the aqueous solubility enhancements of naphthalene provided by micellar solutions of biosurfactants (tea saponin) and a synthetic surfactant (Tween 80) were measured and compared. Results indicated that the solubilization effect of tea saponin increased as the temperature was elevated from 298 to 313 K, which thus indicated that this effect had a strong dependence on temperature. An increase in the temperature also led to a lower CMC value, an increase of the particle diameter, and an enhancement of the molecular activity, which thus led to the enhanced solubilization effect of tea saponin. Moreover, the solubilization effect of tea saponin was better than that provided by Tween 80. The results confirmed the potential applicability of tea saponin for enhanced remediation of naphthalene.
研究领域:
环境科学
·
生物化学
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产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2020
·
IF 7.246
Feng Zheng,Yanchun Li,Zhixiang Zhang,Jinliang Jia,Pengtong Hu,Chaoqun Zhang,Hanhong Xu
Improving rainfastness of agro-chemicals on leaves to reduce chemical leaching onto the ecosystem and aerosol drift is a huge challenge in modern agriculture and environmental protection. In this study, tea saponin (TS), a natural product and efficient bio-pesticide, was blended with environmentally-friendly vegetable oil-based waterborne polyurethanes . The chemical structures, mechanical properties, thermal stability, slow-release behavior of the composite films with different TS contents and the inhibitory effect of composites on mycelia growth of rice blast were studied. It is found that the release rate of TS from the composite films could be tailored by controlling the TS content of the composite emulsion. The composites prepared exhibit excellent inhibitory effect on the mycelia growth of rice blast, even after rainfall washing. This is the first time that bio-based and degradable polymer films with sustained-release of TS are proposed to control rice blast diseases with enhanced rainfastness.
研究领域:
农业科学
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环境科学
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植物保护
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产品关联
DOI
高影响因子
JOURNAL OF SURFACTANTS AND DETERGENTS
·
2018
·Vol. 21
·期 3
·303-312
·
IF 1.454
Zexia Fan,Zhiyu Deng,Tengfei Wang,Weipeng Yang,Kun Wang
Tea saponin (TS) is a relatively inexpensive natural nonionic surfactant extracted from parts of tea plants, which can be modified into an anionic surfactant to achieve better surface activity. In this paper, the synthesis of TS-based succinic acid sulfonate as an anionic foaming agent is described. TS used as the hydrophobic source was modified by maleic anhydride (MAH) and then reacted with sodium bisulfite. Orthogonal experiment of a 2-step reaction was designed and performed, resulting in 9 kinds of succinic acid tea-saponin sulfonate (STS). 4-Dimethylaminopyridine and tetrabutylammonium bromide were, respectively, used as catalyst for the esterification with MAH and the sulfonation with sodium bisulfite. During the synthesis process, N , N -dimethylformamide was employed as the solvent and ethyl acetate as the extractant. The molecular structure of STS was confirmed by infrared spectroscopy and mass spectrometry. The foaming property of STS was investigated through comparison with different kinds of common surfactants. The results show great prospects of these environmentally friendly anionic surfactants. Graphical
研究领域:
化学工程
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环境科学
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材料科学
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Xinjin Yu,Zhimei Zhao,Xiaoli Yan,Jianhua Xie,Qiang Yu,Yi Chen
Traditional organic solvent extractions of tea saponins have many drawbacks. This study aimed to establish an environment-friendly and efficient technology based on deep eutectic solvents (DESs) to extract tea saponins from Camellia oleifera seed meal. The solvent consisting of choline chloride and methylurea was screened as optimal DES. Under the optimal extraction conditions obtained by response surface methodology, the extraction yield of tea saponins reached 94.36 mg/g, which increased by 27% compared with ethanol extraction, while the extraction time was reduced by 50%. Analysis of UV, FT-IR, and UPLC-Q/TOF-MS indicated tea saponins did not alter during DES extraction. Surface activity and emulsification evaluation showed that extracted tea saponins could reduce interfacial tension at the oil–water interface with excellent foamability and foam stability, and they could form nanoemulsions ( d 32 < 200 nm) with excellent stability. This study provides a suitable approach for the efficient extraction of tea saponins.
研究领域:
食品科学
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植物化学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF SURFACTANTS AND DETERGENTS
·
2013
·Vol. 17
·期 5
·919-928
·
IF 1.515
He Jun,Wu Zi-ying,Zhang Shuo,Zhou Yang,Zhao Feng,Peng Zhi-qin,Hu Zhi-wen
Microwave-assisted extraction (MAE) was utilized to extract tea saponin from oil-tea camellia seed cake. The factors influencing the extraction efficiency were studied, including the effects of microwave power, irradiation duration, temperature, ratio of solvent to material and aqueous ethanol concentration. By systematic orthogonal experiments, the optimal extraction technology was determined. Compared with a conventional extraction method, MAE shows great advantages with the extraction time reduced from 6 h to 4 min, 50 % organic solvent saved and about 14 % extraction yield enhanced. Fourier transform infrared spectroscopy testing and high performance liquid chromatography analysis proved that the extracted resultants were tea saponin with similar compounds as a standard tea saponin. The extracted tea saponin was applied on the cleaning of historic silks and showed good removal effect on the stains. This work provides useful information for fully use of oil-tea camellia seed cake and new applications of tea saponin at the protection of historic textiles.
研究领域:
植物化学
·
文物保护
✓ 已验证
DOI
高影响因子
Journal of Cleaner Production
·
2020
·
IF 7.246
Fukang Deng,Tao Jiang,Kedi Yang,Fuchuan Huang
Developing an eco-friendly and energy efficient lubricant additive is important in the field of tribology . Herein, we successfully synthesized a series of green and efficient lubricant additives by grafting the n-carbon alkyl chain to tea saponin (TSCn, n = 8,10,12,14,16), nano tribofilm can self-assemble on sliding surfaces in both water and oil phases. Low frequency and high contact stress ball-on-disc reciprocating friction tests showed that TSC14 and TSC16 exhibit excellent lubricating performance. When 0.5 wt% of TSC14/TSC16 was added in DI water, the friction coefficient and wear rate were reduced by 67.69%/69.74% and 79.42%/81.65%, respectively. When 0.5 wt% of TSC14/TSC16 was added in PAO6, the friction coefficient and wear rate were reduced by 46.15%/42.86% and 86.19%/80.48%, respectively. In addition, the TSC14/TSC16 emulsion also exhibited good stability and lubricity.
研究领域:
材料科学
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摩擦学
·
绿色化学
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2021
·
IF 5.909
Zheng-Wei Ma,Kai-Ning Zhang,Zhi-Jin Zou,Qiu-Feng Lü
A novel activated carbon (C CH-TS ) derived from chitosan hydrogel (CH) coated tea saponin (TS) was prepared to investigate its removal performance for methylene blue (MB). C CH-TS was characterized by thermogravimetric analysis , field-emission scanning electron microscope , fourier transform infrared spectroscopy , X-ray diffraction, X-ray photoelectron spectroscopy, Brunauer-Emmett-Teller, and zeta potential analysis. The results showed that C CH-TS had a high specific area of 3504 m 2 /g with a large pore volume of 6.03 m 3 /g. In the batch mode adsorption experiments, the effects of initial pH values, adsorbent concentration, initial MB concentration and contact time, and adsorption temperature on the adsorption performance of C CH-TS for MB were studied. The experimental results were fitted by pseudo-first-order kinetic, pseudo-second-order kinetic and intra-particle diffusion models. Furthermore, Langmuir, Freundlich and Temkin isotherms were employed to analyze the equilibrium adsorption data. It was found that these data were fitted to Langmuir isotherm best with a maximum adsorption capacity of 604.10 mg/g, while pseudo-second-order kinetic model could describe the adsorption process more accurately. Thermodynamic analysis implied that the adsorption process was spontaneous and exothermic. Therefore, a facile one-step route to preparation of activated carbon with a high specific area and efficient dye removal ability was achieved.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF TEXTURE STUDIES
·
2025
·Vol. 56
·期 2
·e70016
·
IF 2.5
Kaixuan Wang,Shengnan Zhan,Jianyuan Yang,Qiaoming Lou,Tao Huang
In this study, environmental stability, rheological properties, and structural characterization of co-stabilized emulsions using fish gelatin (FG) and tea saponin (TS) were investigated. The results demonstrated that the addition of TS significantly enhanced the emulsifying properties of FG, and the FG-TS 0.1% emulsion had the smallest particle size. TS and FG co-stabilized emulsions provided resistance to salt and high temperatures. Optical microscopy and CLSM showed that the addition of TS made FG more effectively adsorb at the oil–water interface, leading to the formation of more uniform oil droplet sizes. Additionally, the addition of TS increased the viscosity of FG emulsions, which reduced emulsion flocculation. Results of intrinsic fluorescence, FTIR, and surface hydrophobicity revealed that the addition of TS altered the secondary structure of FG, enhancing surface hydrophobicity and improving emulsification. In conclusion, the moderate addition of TS significantly enhanced the emulsification and rheological properties of FG, suggesting new potential applications for FG in various industries.
研究领域:
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2018
·
IF 5.091
Zhenbao Zhu,Ying Wen,Jianhua Yi,Yungang Cao,Fuguo Liu,David Julian McClements
Hypothesis This study compared the interfacial and emulsification properties of tea saponins , quillaja saponins, and Tween 80. We hypothesized that tea saponins are an effective and sustainable source of plant-based emulsifiers that could replace synthetic or animal-based emulsifiers in many commercial applications. Experiments Interfacial tension measurements were used to characterize the behavior of the three surfactants at an oil-water interface. The emulsifying properties of the surfactants were determined by preparing oil-in-water emulsions containing 10 wt% medium chain triglycerides (MCT) and varying surfactant levels (0.1–2 wt%) using high-pressure homogenization (pH 7). The impact of surfactant type on emulsion formation and stability was determined by measuring particle size, zeta–potential, microstructure, and creaming stability. Findings The tea saponins were capable of producing nano-scale droplets ( d 32 < 200 nm) at low surfactant-to-oil ratios (SOR < 0.1). Emulsions containing tea saponins remained stable to droplet aggregation when exposed to various temperatures (30–90 °C), salt levels (0–200 mM NaCl), and pH values (3–9). However, droplet flocculation and/or coalescence occurred under highly acidic (pH 2) and high ionic strength (300–500 mM NaCl) conditions. Tea saponin-coated oil droplets appeared to be mainly stabilized by a combination of electrostatic and steric repulsion. The tea saponins behaved similarly or better than the other two emulsifiers under most conditions. These results suggest that tea saponins are effective plant-based surfactants that may have applications in commercial products.
研究领域:
食品科学
·
表面化学
·
植物化学
✓ 已验证
DOI
高影响因子
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