FOOD CHEMISTRY
·
2021
·
IF 7.514
Xiaomin Chen,Hui Wang,Xiaojun Huang,Shengkun Xia,Chunhua Chen,Qixing Nie,Shaoping Nie
This work established an effective method for kale flavonoids enrichment by resins. Resin screening, adsorption kinetics and isotherms, dynamic adsorption and desorption tests were conducted to optimize the appropriate resins and enrichment conditions. The results showed that NKA-9 was the optimum resin. The best adsorption conditions were 0.2 mg/mL flavonoids concentration, 12.5 bed volume (BV) sample volume and 2 BV/h adsorption rate. The desorption conditions were 3 BV of 80% ethanol at 2 BV/h elution rate. Under these conditions, the product purity was 31.16%. The purified flavonoids extract was mainly comprised of Kaempferol-3-O-sophoroside-7-O-diglucoside, Kaempferol-3,7,4′-O- d -triglucoside, Kaempferol-3-O-feruloyl-sophoroside-7-O- d -glucoside, and Kaempferol-3-O-sinapoyl-sophoroside. Moreover, it presented higher scavenging ability against 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical and hydroxyl ( OH) radical than crude extract. In conclusion, kale flavonoids can be well concentrated by NKA-9 resin and the purified flavonoids extract has good antioxidant activity which can be potentially applied in food, cosmetic or pharmacy industries.
研究领域:
食品科学
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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 ANALYTICAL AND APPLIED PYROLYSIS
·
2024
·
IF 5.8
Yingna Li,Muhammad Sajjad Ahmad,Mudassir Hussain Tahir,Maryam Bashir,Arif Muhammad Khan,Rana Muhammad Irfan,Imran Riaz Malik,Boxiong Shen
This study investigates the selective production of aromatics through the co-pyrolysis of cabbage waste and plastics followed by catalytic reforming with Ni-modified ZSM-5. Co-pyrolysis significantly improves the inflection point (a parameter for determining thermal stability) to 251.3 °C from 232.7 °C. This process also enhances the relative yield of olefins and phenols , which are precursors for aromatic production to 25.46 and 17.23 respectively, up from 13.87 to 12.05. Furthermore, catalytic pyrolysis elevates the relative yield of aromatics to 53.4, as confirmed by Thermogravimetric Analysis (TGA) and Thermogravimetric-Fourier Transform Infrared Spectroscopy (TG-FTIR) analyses. GC-MS confirms the enhanced formation of valuable chemical precursors via co-pyrolysis such as phenols and olefines to 18.67 % and 22.13 % leading to a 63.81 % selective yield of aromatics in the final oil with 10Ni/ZSM-5. Ni modification of ZSM-5 is influential in decreasing PAH formation (7.26 % from 20.37 %), indicating that this two-step process is an effective method for transforming waste into high-quality bio-oil with enriched aromatic content.
研究领域:
环境科学
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能源化学
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产品关联
DOI
高影响因子
Nanomaterials
·
2018
·Vol. 8
·期 11
·937
·
IF 3.504
Haiyan Yang,Liang Jiang,Yizhou Li,Guoqing Li,Yepeng Yang,Jiao He,Jiaqiang Wang,Zhiying Yan
In sharp contrast to conventional photosensitization methods in which the organic pigments were often adsorbed, herein we present a study on natural vegetable pigment inserted TiO2aerogel nanocomposites and we directly use red cabbage anthocyanin (RCP) as a structure-directing agent. It was found that pure TiO2aerogel nanocomposite did not exhibit any meaningful activity for photocatalytic reduction of Cr(VI). However, the photocatalytic reduction activity was greatly improved by the RCP inserted TiO2aerogel nanocomposites under visible-light irradiation, which was approximately 2- and 12.3-fold higher than that of TiO2aerogel conventionally photosensitized by RCP and pure TiO2aerogel nanocomposites, respectively. It also exhibited good stability and could be reused at least three times without losing a significant amount of its activity.Keywords:Red cabbage pigment;anthocyanin;TiO2aerogel;photocatalytic activity
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2024
·
IF 4
Zhifeng Cai,Guiyu Meng,Yanan Li,Yingjie Zhou
Sulfur-doped carbon dots (S-CQDs) in the light of cabbage leaves were suggested through using a one-pot hydrothermal strategy. The cysteine was used as a sulfur dopant. Transmission electron microscope (TEM) suggested that the morphology of S-CQDs was highly dispersed and the particle size distribution range was located at 3.2–3.8 nm. Four elements (C, N, O and S) could be observed through X-ray photoelectron spectroscopy (XPS). Some oxygen-containing and amino-containing groups could also be indicated by using Fourier transform infrared spectroscopy (FT-IR). The S-CQDs suggested bright blue fluorescence under UV light. At the same time, the S-CQDs displayed exceptional anti bleaching property and salt resistance under UV light and NaCl solution, respectively. Moreover, the S-CQDs could be applied as excellent fluorescent nanoprobes to detect alizarin based on the fluorescence quenching strategy. The linear detection range was 0.5–100 μM with the detection limit of 0.14 μM. The fluorescence quenching principle was thoroughly studied based on the related characterizations. The behavior of the detection platform was studied in actual samples by using tap water, Yili milk and iced black tea samples. Finally, the S-CQDs could be applied for the sensing of temperature.
研究领域:
材料科学
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分析化学
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2021
·
IF 5.909
Wenxu Zhang,Qian Liu,Lulu Guo,Peng Wang,Shengfang Liu,Jing Chen,Ziqiang Lei
In order to reduce the pollution of the bio-waste cabbage to the environment and achieve recycling of biological waste resources, synthesis of a novel superabsorbent polymer gel based on waste cabbage (CB) using two monomers AMPS (2-acrylamide-2-methyl-1-propane sulfonic acid) and AA (acrylic acid). And the synthesis conditions were optimized, such as the ratio of AMPS and AA, initiator content, and crosslinker content. And the water retention, salt resistance and repeated swelling performance were investigated too. The chemical structure thermal stability and microscopic appearance of the superabsorbent polymer gel were investigated by Fourier transform infrared spectroscopy (FTIR), Thermal gravimetric analysis (TGA) and Scanning electron microscope (SEM). The results showed that the novel superabsorbent polymer gel exhibits excellent water absorbency, which can absorb ultrapure water, distilled water, tap water and 0.9% NaCl solution are 1914 g/g, 1726 g/g, 306 g/g and 114 g/g, respectively. This is higher than in related studies 30%− 40% in distilled water, 60%− 70% in tap water and 10%− 20% in 0.9% NaCl solution. Therefore, this superabsorbent polymer gel showed a high swelling property and stable salt resistance. It has a broad application prospect.
研究领域:
环境科学
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材料科学
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生物资源利用
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2017
·Vol. 29
·期 5
·4334-4344
·
IF 2.019
Cai Tailong,Wang Hanwei,Jin Chunde,Sun Qingfeng,Nie Yujing
Nitrogen-doped porous carbon aerogels were prepared by using low-cost and high yield cabbages as carbon source via a mild method, including hydrothermal, freeze-drying, and carbonization processes. Owing to natural structure and nitrogen-containing features, the as-prepared carbon aerogels exhibited hierarchical 3D network porous structure with suitable nitrogen-doped and high conductivity. With such unique structural characteristics, these carbon aerogels displayed a superior performance, such as superior capacitance of 291 F g −1 with high large capacitance retention of 96.76% after 10,000 cycles in 6 M KOH electrolyte, as well as high energy density of 97.1 Wh kg −1 with and long cycling stability of 92.87% after 10,000 cycles in ionic liquid. Moreover, these superoleophilic carbon aerogels exhibited excellent adsorption capacity and recyclability for various oils and organic solvents. This work fully utilized the advantages of the cabbage leaves derived porous carbon aerogels as a promising “green” candidate to apply in low-prices and high-performance energy storage devices and adsorbent materials.
研究领域:
材料科学
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环境科学
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能源存储
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产品关联
DOI
高影响因子
Food Packaging and Shelf Life
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2021
·
IF 6.429
Danfei Liu,Zijie Cui,Mi Shang,Yunfei Zhong
The purpose of the research was to prepare colorimetric films based on polyvinyl alcohol/sodium carboxymethyl cellulose (PVOH/CMC-Na, CPVH) doped with red cabbage anthocyanins (RCAs). The CPVH-RCAs (PVOH/CMC-Na/RCAs) films with different RCAs contents were developed with solvent evaporation method. The Fourier transform infrared reflected that RCAs were fixed into CPVH films through the electrostatic interaction and hydrogen binding, which changed the spatial structure of the CPVH films. Field emission scanning electron microscope (FE-SEM) and X-ray diffraction (XRD) indicated that the RCAs reduced the crystallinity of CPVH films during the film-forming process and affected the compatibility of CMC-Na and PVOH . Compared with CPVH films, the presence of RCAs decreased the tensile strength (TS) and swelling index (SI), and increased elongation at break (EAB) and water solubility (WS) of the colorimetric films. The low content RCAs of colorimetric films had high sensitivity to ammonia, but the color variations were not obvious. When applied to monitor the freshness of pork at 25 °C, the colorimetric films presented conspicuous color variations from red to bluey-green on spoilage. Therefore, the prepared colorimetric films containing RCAs had the potential to be used as an indicator of freshness and intelligent packaging.
研究领域:
食品科学
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材料科学
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Hongbin Pu,Yuting Xie,Qingyi Wei,Da-Wen Sun
SERS sensors based on metal-organic frameworks (MOFs) have garnered considerable attention in trace pesticide residue detection. UiO-66/AuNPs suspension substrates were fabricated by introducing thioglycolic acid (TGA) as a binder to modify the surface of AuNPs to facilitate their electrostatic assembly with UiO-66 prepared through hydrothermal reaction. The proposed substrates were used for quantitative and simultaneous analysis of paraquat and diquat in cabbage. Diquat and paraquat in actual cabbage samples were individually analysed with detection of limits (LOD) of 6 μg/L and 3 μg/L, respectively, and validated with recoveries ranging from 92.65 to 118.34%. Furthermore, the UiO-66/AuNPs substrate was able to differentiate between paraquat and diquat mixtures, even for the concentrations in the cabbage extracts differed by a factor of 100. The proposed UiO-66/AuNPs substrate provides a potentially useful tool for the trace determination of pesticide residues in the practical food safety analysis
研究领域:
分析化学
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食品安全
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环境科学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Shuo Yang,Qijun Ding,You Li,Wenjia Han
Food safety is related to public health and environmental safety. Therefore, it is necessary to develop accurate and effective detection methods to assess food quality and safety. In this study, a pH-responsive functional film (BC/GA/FITC/PCA) was generated for the real-time and visual monitoring of shrimp freshness. Bacterial cellulose /Gelatin (BC/GA) was used as a film-forming matrix, and fluorescein isothiocyanate (FITC) and red cabbage (PCA) were used as the response signals. The addition of FITC and PCA increased the shading capacity (< 30 %) and antioxidant properties (22.8 %) of the films. WCA (82.73 ± 0.95°), WVP (1.48 × 10 −11 g·cm/cm 2 ·s·Pa) and OTR (2.42 × 10 −15 cm 3 ·cm/cm 2 ·s·Pa) indicated that the film possessed water resistance and oxygen barrier properties. When exposed to daylight, the film underwent a color transition from purple to green as the ammonia concentration increased. In addition, the blue-green fluorescence of the films gradually increased and the detection limit was low (170 ppb). In particular, the change in film color caused by shrimp spoilage corresponded to the TVBN value. This study work provides a new strategy for controlling and monitoring food safety and has a wide range of applications in the fields of food-active packaging and smart packaging.
研究领域:
食品科学
·
生物材料学
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产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Zhenhe Wang,Shujin Ge,Shihao Chen,Xia Sun,Wei Chen,Qiuhong Li
Gaseous amines such as trimethylamine and ammonia are characteristic compounds for monitoring the quality of animal foodstuff like salmon meat. However, there is no existing colorimetric film with both hydrophobicity and UV-proof properties for salmon freshness monitoring in humid and light conditions. Addressing this challenge, a new colorimetric film was developed for monitoring salmon freshness by coating W/O Pickering emulsion containing microencapsulated red cabbage anthocyanin solution onto polyvinylidenefluoride film. The W/O Pickering emulsion was obtained using 3-(Trimethoxysilyl)propyl methacrylate modified TiO 2 @SiO 2 as the emulsifier. The ability of UV resistance and preventing anthocyanin from dissolving out of the film were verified by testing the light and water stability of film. The response of the colorimetric film to gaseous amines was investigated, and the performances including selectivity and linear range were evaluated. Based on this, the colorimetric film was successfully employed to monitor the freshness of salmon within 7 days at 4 ℃.
研究领域:
食品科学
·
生物化学
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产品关联
DOI
高影响因子
TALANTA
·
2024
·
IF 5.6
Siyu Wu,Hongyun Ma,Xiaoyan Chen,Wen Zhong,Yingying Gu,Yuqing Miao,Yarui An
Here, a label-free immunosensor was conducted using rGO/Collard-like Bi 2 S 3 @Au nanocomposite system to detect carbohydrate antigen 19-9 (CA19-9) as a diagnostic biomarker for Pancreatic cancer. The unique morphology of Collard-like Bi 2 S 3 increases its specific surface area, which allows it to immobilize more materials and biomolecules on its surface. To realize the covalent bonding of bismuth-based materials with biomolecules, bismuth-based materials were functionalized by Au NPs. Besides, the superior electrochemical activity and large specific surface area of Bi 2 S 3 @Au improved the stability of the sensor, which made it an ideal candidate for regulating the sensing interface in this study. Meanwhile, reduced graphene oxide (rGO) with remarkable electrical conductivity to improve the current response of the sensing interface, thus broadening the linear range of the immunosensor. Based on the above materials, a label free electrochemical immunosensor was constructed for detecting CA19-9. Under optimal conditions, it displays good linear relationship within the range of 0.01 U mL −1 to 100 U mL −1 , the detection limit being 0.0012 U mL −1 . Additionally, the immunosensor prepared in this work is characterized by superior interference immunity, reproducibility and storage stability, and has yielded satisfactory recovery rate in testing the serum samples of patients.
研究领域:
生物传感器
·
癌症诊断
·
纳米材料
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2020
·
IF 4.049
Yuxin Wang,Man He,Beibei Chen,Bin Hu
In this work, a hydroxyl-containing porous organic framework (HC-POF) was prepared by a simple solvothermal reaction with 1,4-phthalaldehyde and phloroglucinol as monomers. Sol-gel method was used to coat HC-POF on the glass stir bar. The prepared HC-POF coated stir bar shows better extraction performance for six triazole fungicides (TFs) compared to commercial polydimethylsiloxane and ethylene glycol-silicone coated stir bars. Fourier transform infrared Spectrometry and X-ray photoelectron Spectrometry were used to explore interactions between HC-POF coating and TFs. It is assumed that the coating mainly adsorbs TFs through π-π interactions, hydrogen bonding and hydrophobic interactions. Based on this fact, a new method of HC-POF coated stir bar sorptive extraction combined with high performance liquid chromatography-diode array detector was developed for the determination of six TFs in grape and cabbage samples. A series of extraction and desorption conditions were carefully optimized, including salt concentration, sample solution pH, stirring rate and desorption solvent. Under the optimized experimental conditions, the proposed method displayed limits of detection in the range of 0.022 -0.071 μg L −1 , which is the lowest among the reported SBSE methods for target TFs analysis. The linear range for six TFs was 0.1/0.2-500 μg L −1 and the recoveries for the spiked grape and cabbage were 81.0-109% and 80.7-111%, respectively.
研究领域:
分析化学
·
食品科学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）