Polymers
·
2022
·Vol. 14
·期 13
·2704
·
IF 4.967
Xiangyu Jiao,Jiaxuan Xie,Mingda Hao,Yiping Li,Changtao Wang,Zhu Zhu,Yongqiang Wen
World hunger is on the rise, yet one-third of food is wasted. It is necessary to develop an effective food preservation method to reduce food waste. This article reports a composite film based on chitosan biguanidine hydrochloride(CBg) and poly (N-vinyl-2-pyrrolidone)(PVP) that can be used as a conformal coating for fresh produce. Due to the strong positive charge of CBg, the film has excellent antibacterial properties. Owing to the hydrogen bonds between CBg and PVP, the film has good flexibility and mechanical properties. In addition, the coating is washable, transparent, and can reduce the evaporation of water. The above characteristics mean the film has broad application prospects in the field of food preservation.Keywords:antimicrobial;chitosan derivative;coating;fruit
研究领域:
食品科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Food Analytical Methods
·
2023
·Vol. 16
·期 9
·1468-1476
·
IF 2.9
Yang Yi,Shi Kaicun,Xu Shufang,Tian Yu,Huang Hong,Cai Xiaoli,Liu Zhimin,Xu Zhigang,Zhang Fengmei,He Pei,Liu Chunbo,Si Xiaoxi
Vitamin B3 is an essential vitamin that the human body cannot synthesize in sufficient amounts. Thus, it must be supplemented through food and medicine. The vitamin B3 content of foods and drugs must therefore be determined to identify its main sources. However, vitamin B3 is a strongly polar substance, and its detection in complex actual samples has certain challenges. In this study, a double column tandem method was established for the determination of vitamin B3 in fruit and drug samples. The chromatographic retention of the vitamin was investigated using different chromatographic single-column and double-column tandem models. The best separation and determination effect was obtained under a dual-column tandem mode consisting of a C18 short column and a HILIC column. The chromatographic conditions for vitamin B3 detection were as follows: 10:90 (v:v) acetonitrile–0.1% acetic acid water solution mobile phase, 30 ℃ column temperature, 0.4 mL/min flow rate, and 262 nm detection wavelength. This method was used to detect vitamin B3 in three fruits and two drugs. The detected content ranged between 1.50×10 2 and 1.35×10 3 mg/kg, and the recovery for spiked samples was 85–102%. This high performance liquid chromatography with two columns tandem can effectively determine vitamin B3. Graphical Abstract
研究领域:
分析化学
·
营养学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Jiani Zhang,Xiaohui Guo,Jian Zhang,Xiaobing Guo,Yuying Xu,Lijuan Chen
Phoxim, extensively utilized in agriculture as an organothiophosphate insecticide, has the potential to cause neurotoxicity and pose human health hazards. In this study, an electrochemical enzyme biosensor based on Ti 3 C 2 MXene/MoS 2 @AuNPs/AChE was constructed for the sensitive detection of phoxim. The two-dimensional multilayer structure of Ti 3 C 2 MXene provides a robust framework for MoS 2 , leading to an expansion of the specific surface area and effectively preventing re-stacking of Ti 3 C 2 MXene. Additionally, the synergistic effect of self-reduced grown AuNPs with MoS 2 further improves the electrical conductivity of the composites, while the robust framework provides a favorable microenvironment for immobilization of enzyme molecules. Ti 3 C 2 MXene/MoS 2 @AuNPs electrochemical enzyme sensor showed a significant response to phoxim in the range of 1 × 10 −13 M to 1 × 10 −7 M with a detection limit of 5.29 × 10 −15 M. Moreover, the sensor demonstrated excellent repeatability, reproducibility, and stability, thereby showing its promising potential for real sample detection.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2022
·Vol. 189
·期 6
·1-13
·
IF 6.408
Zhu Weisheng,Gao Xiangfan,Yu Xiaokan,Li Qisi,Zhou Yuan,Qiu Hao,Xing Bengang,Zhang Zhijun
Nine kinds of carbon dots (CDs) were synthesized by using fruits with different varieties as carbon sources; meanwhile, the fluorescence characteristics, quantum yield, and response ability to different metal ions and free radicals were systematically studied. These CDs showed similar excitation and emission spectral ranges ( λ ex ≈ 345 nm, λ em ≈ 435 nm), but very different fluorescence quantum yield (QY), in which orange and cantaloupe CDs have the highest QY around 0.25 and green plum CDs showed the lowest quantum yield around 0.1. Interestingly, the fluorescence of all of these CDs can be significantly quenched by hydroxyl radical (•OH) and iron ion (Fe 3+ ); however, these CDs showed very different response characteristics to other metal ions (e.g., Co 2+ , Ni 2+ , Cu 2+ , Ce 3+ , Mn 2+ , Ag + , and Fe 2+ ). Through in-depth analysis, we found some interesting patterns of the influence of carbon sources on the fluorescence characteristics of CDs. Finally, by using white pitaya CDs as fluorescence probe, we realized sensing of Fe 3+ and •OH with limits of detection (LOD) of 19.4 μM and 0.7 μM, respectively. Moreover, the CDs were also capable for sensitive detection in immune cells and even in zebrafishes. Our work can provide valuable guidance for the rational design of functional CDs for biological applications. Graphical abstract
研究领域:
生物化学
·
材料科学
·
免疫学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
·
2020
·Vol. 101
·期 7
·2779-2787
·
IF 2.614
Wenbi Guan,Yingxin You,Jialing Li,Jiaying Hong,Haiying Wu,Yanna Rao
BACKGROUND Penicillic acid (PA) is produced by Aspergillus spp. and Penicillium spp., which are common postharvest and storage fungi of fruits. PA can be of concern for human health because of its toxicity and high fruit consumption by the population. However, no data on PA occurrence in various fruits have yet been reported. A quick, easy, cheap, effective, rugged and safe (QuEChERS) approach for PA determination in various fruits was developed and applied to explore PA incidence in fruits. RESULTS The modified QuEChERS procedure with extraction by ethyl acetate and purification by multi-walled carbon nanotubes (MWCNTs), primary secondary amine (PSA) and octadecyl silane (C18) was established to determine PA in various fruits by high-performance liquid chromatography–tandem mass spectrometry (HPLC-MS/MS). The average recoveries were 72.9–102.2% and relative standard deviations (RSDs) were 1.3–7.9%. A total of 161 fruits samples, including kiwi, apple, peach, grape and mandarin/orange, were collected in southern China. The incidence of PA in fruits was 14.9% and the levels of PA contamination were 0.200–0.596 μg kg −1 . Our results suggested that orange/mandarin, grape and kiwi were favorable matrices for Aspergillus spp. and Penicillium spp. to produce PA, rather than peach and apple. CONCLUSION To the best of our knowledge, this is the first report about PA contamination in various fruits in China. Our study emphasizes the necessity of the current established method, which could be used for continuous monitoring of PA and reducing the health risk to Chinese consumers. © 2020 Society of Chemical Industry
研究领域:
食品安全
·
分析化学
·
微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Jinquan Li,Yun Zhou,Yue Xiao,Shuo Cai,Changsheng Huang,Shuo Guo,Yuanqiang Sun,Rong-Bin Song,Zhaohui Li
Evaluation of total antioxidant capacity (TAC) in fruits is essential for dietary guidance and health monitoring. Here, we have exploited light-response carbon dots (CDs) as oxidase-like nanozyme to determine the TAC of fruits. The CDs possess excellent oxidase-like activity with light stimulation due to the accelerated intramolecular charge transfer caused by abundant electron donating/drawing groups in precursors. The scavenger experiment reveals that the catalytic intermediate could be hydroxyl radical, which can oxidize the colorimetric substrate. With the introduction of antioxidants, the oxidization of colorimetric substrate will be alleviated due to the scavenging of this intermediate by antioxidants. Based on this, we have successfully detected three antioxidants and obtained TAC of fruits with desirable results. This work affords a rapid, cost-effective and convenient analysis tool for TAC, as well as building a strong bridge between CDs and the development of photo-responsive oxidase-like nanozymes.
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
ACS Omega
·
2021
·
IF 3.512
Lu Liu,Liqin Cao,Hongyan Niu,Jide Wang
The development of water treatment materials using environmentally friendly natural biomasses as substitutes plays an increasingly important role in environmental protection. Zeolitic imidazolate framework-8 (ZIF-8) is often used for the catalytic degradation of dye wastewater, but due to its small particle size, its disadvantage of easy agglomeration prevents it from being fully functional. Herein, we report an efficient method for synthesizing biomasses/ZIF-8 using four different fruit peels as carriers. ZIF-8 nanoparticles are in-situ grown uniformly on their surface. The Brunauer–Emmett–Teller surface area of shaddock peel/ZIF-8 was found to be 752.15 m2g–1. After catalytic activity comparison, the loose shaddock peel/ZIF-8 showed the fastest and most significant degradation efficiency of 94% in methylene blue aqueous solution and could be used multiple times through a simple washing process.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
EUROPEAN FOOD RESEARCH AND TECHNOLOGY
·
2020
·Vol. 246
·期 10
·2065-2077
·
IF 2.366
Batool Zahra,Li Lin,Xu Dan,Wu Ming,Weng Longmei,Jiao Wenjuan,Cheng Hao,Roobab Umme,Zhang Xia,Li Xiaoxi,Liang Yi,Li Bing
Furan, which has been identified as possibly carcinogenic for humans, can be induced to different food items by thermal treatment. In accordance with the previous studies and risks associated with prevalence of furan in food, it is necessary to be acknowledged of amounts of furan formed in different thermally processed foods for human awareness. In this study, Headspace Solid-Phase Microextraction Gas Chromatography–Mass Spectrometry (HS-SPME-GC/MS) was optimized for simultaneous determination of furan, furfural, 2-methylfuran and 2-pentylfuran for the first time from different dried fruits and roasted nuts. The method was proved to be valid for determination of all analytes at 50 °C for 25 min, stirring at 700 rpm and 20% NaCl (W/V) using 50/30 μm divinlybenzene/carboxen/polysimethylsiloxane (DVB/CAR/PDMS) fibre. All analytes were baseline-separated at HP 5-MS column in less than 13 min and obtained results have shown prevalence of furan, furfural and 2-pentylfuran in the studied matrices; however, 2-pentylfuran was more prevalent in the roasted nuts than dried fruits and 2-methylfuran has not shown considerable prevalence in both matrices. Moreover, this method was validated in terms of linearity, precision, recovery, specificity, limit of detection and limit of quantification depending on analytes and sample matrices. Hence, the present method was proved to be highly sensitive, specific and robust with good precision and accuracy and suitable for monitoring these furan derivatives in the studied matrices.
研究领域:
食品安全
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Haili Sun,Juanjuan Feng,Jiaqing Feng,Mingxia Sun,Yang Feng,Min Sun
In order to develop environmentally friendly, economical and facile preparation method of carbon aerogels (CAs), the waste printing paper as the raw material was combined with graphene oxide and carboxylic multi-walled carbon nanotubes to produce CAs (ρ = 44 mg cm −3 ). The CAs with different composition were investigated, the addition of graphene oxide led to the reduction of adsorption sites and the reduction of extraction performance. But the carbon nanotubes made CAs have a better pore structure. The CAs as adsorbent were loaded into a pipette-tip for solid-phase extraction of hexaconazole and diniconazole. Coupled with gas chromatography, an analytical method was established under the optimized conditions. The limits of detection were between 0.08 and 0.32 mg kg −1 , the linear ranges were 0.96–200.0 mg kg −1 and 0.24–200.0 mg kg −1 . The relative recoveries were in the range of 81.0–119%. The results indicated that the method had potential application for the determination of triazole fungicides.
研究领域:
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 1
·1-10
·
IF 5.3
Zhang Zhikun,Bai Liwei,Han Jilong,Li Zhengjie,Liu Qingju
For the first time a novel fluorescent La@ZrMOF nanomaterial was synthesized for the convenient and visual detection of ethephon (ETH) based on the ligand–metal charge transfer process. The fluorescence signal gradually enhanced as the concentration of ETH increased, accompanied by a change in the color from colorless to blue. The assay can be completed within 75 min with a detection limit of 0.03 mg/L. A paper-based approach for the rapid and visual determination of ETH has also been devised, enabling the efficient used in a variety of actual products, with apples, pears, and tomatoes as examples. It proved to be simple, easy to use, and sensitive, and has the potential for further uses of ETH detection. Graphical
研究领域:
植物生理学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Xiangyu Jiao,Xiaona Chong,Haiyu Du,Mengyao Yang,Zhu Zhu,Zhengfeng Ma,Yongqiang Wen
This study focuses on the development and application of tea polyphenol-loaded chitosan/polyaspartic acid nanoparticles (TP@CS/PASP-Nps) embedded within polyvinyl alcohol (PVA) nanofibers to extend the shelf life of fruit. The nanofibers were fabricated using electrospinning, which enhanced the stability and uniform dispersion of the nanoparticles. Experimental results demonstrated that the TP@CS/PASP nanoparticles exhibit significant pH and protease-responsive release of TP, with a cumulative release of 56.22 % at pH 5.0 after 120 h, compared to 26.70 % at pH 7.0. In the presence of 1 mg/mL protease, the release of TP increased by 25.31 %. Furthermore, the nanofibers displayed excellent antimicrobial properties, inhibiting the growth of Escherichia coli , Staphylococcus aureus , and Botrytis cinerea , and exhibited antioxidant activity with a DPPH scavenging rate of 43.1 % at 10 mg/mL. When applied to strawberries, the nanofibers significantly prolonged shelf life, maintaining a 0 % mold growth rate over six days compared to 100 % in the control group. This innovative packaging system presents a promising solution for the intelligent control of active substance release, offering valuable insights into the application of stimulus-responsive nanoparticles in food preservation.
研究领域:
食品科学
·
材料科学
·
生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2024
·
IF 4
Zhikun Zhang,Bo Xin,Liwei Bai,Qingju Liu
Ethephon (ETH), is an important phytohormone used as a pesticide in agriculture, the overuse of which has caused numerous health problems due to its toxicity. There is an urgent requirement to establish a testing platform that is convenient, accurate, and sensitive in detecting ETH. Herein, we devised an imine groups-based covalent organic framework (COF) with methoxy group as a fluorescent probe for ETH detection. This COF contained a rich imine structure which facilitated acids-responsive characteristics, leading to increased fluorescence response when protonated. Upon exposure to ETH, there was a notable increase at 510 nm, triggering a color transition in fluorescence from yellow to green. This change in fluorescence intensity was directly correlated with ETH concentrations ranging from 0.1 mg/L to 400 mg/L, with a limitation of detection as low as 0.05 mg/L. The practicality was demonstrated through the detection of ETH in strawberries, pepino melon, and persimmons, showing its potential for broad application in ETH analysis.
研究领域:
农业科学
·
分析化学
·
食品科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）