FOOD HYDROCOLLOIDS
·
2025
·
IF 12.4
Le-Ying Yang,Zong-Cai Tu,Hui Wang,Xue-Ke Sun,Yu-Ting Hu,Yu Chen,Zi-Zi Hu,Xiao-Mei Sha
The physical properties and gelatin identification of gummy candies could be affected in the storage process by acid hydrolysis and glycation reaction. In this work, the physical properties including texture, color, appearance and molecular weight distribution were evaluated in the porcine gelatin-containing gummy candies that were stored under the accelerated model at different storage stages. In addition, the characteristic peptides of porcine gelatin were identified by high performance liquid chromatography and linear ion trap/Orbitrap MS/MS (HPLC-LTQ/Orbitrap MS/MS) to investigate their changes. The results showed that hydrolysis was the main reaction in the early stage of storage. The hardness, gumminess, chewiness and high molecular weight peptides content of gummy candies decreased greatly with the extension of storage time. Free amino groups were produced by gelatin hydrolysis to promote glycation and glycosidic bond. In the later stage of storage, glycation was dominant, which led to the decrease of low molecular weight peptides. Moreover, HPLC-MS/MS identified 275, 260, 243, 248 and 257 characteristic peptides of porcine gelatin from gummy candies treated by the accelerated model in 0, 14, 28, 42 and 56 days, respectively. Among them, 130 characteristic peptides were found to remain unchanged during the shelf-life of gummy candies. By further comparison with the identification under various food processing conditions, 6 stable characteristic peptides were reserved until the end. They could provide the basis for the subsequent traceability of porcine gelatin.
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
FOOD CHEMISTRY
·
2025
·
IF 9.8
Biqi Liu,Qinggang Xie,Yang Liu,Shihang Li,Kai Dong,Yue Su,Yujun Jiang,Xinyan Yang,Ling Guo
Processed cheese faces challenges related to short shelf life and susceptibility to microbial contamination during room temperature storage. Nisin, a natural antimicrobial peptide used for food preservation, exhibits limited sustained activity and a narrow antimicrobial spectrum, making its enhancement essential. To address these issues, this study employed electrostatic self-assembly technology to develop chitosan-pectin nanoparticles loaded with nisin (CNP) to improve processed cheese stability at room temperature. The CNPs formed through electrostatic interactions and hydrogen bonding, exhibited ellipsoidal or polyhedral shapes. The encapsulation efficiency and loading capacity of CNPs were 73.93 % and 34.48 %. The CNPs provided sustained nisin release, significantly inhibiting the growth of Gram-negative bacteria such as Escherichia coli and Salmonella enterica . Notably, the addition of CNP, extended the shelf life of processed cheese by at least 21 days at room temperature, maintaining product stability. This study presents an innovative and efficient solution for processed cheese preservation at room temperature.
研究领域:
食品科学
·
微生物学
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产品关联
DOI
PubMed
高影响因子
Analytical Methods
·
2017
·Vol. 10
·期 3
·359-364
·
IF 1.9
Yongli Yu,Jianli Niu,Wei Li,Haixia Liu,Meng Wang
An approach for Brilliant Blue (BB) detection was established based on fluorescence resonance energy transfer, where YVO4:Eu nanocrystals (NCs) are used as the energy donors and BB as the energy acceptor. BB could be electrostatically combined with the YVO4:Eu NCs and the fluorescence of the nanocrystals was quenched. Under optimal conditions, the logarithm of fluorescence intensity of the YVO4:Eu NCs was linearly proportional to the BB concentration in the ranges of 2.5 × 10−6–2.5 × 10−4 and 2.5 × 10−4–2.5 × 10−3 g L−1. The limit of detection was 1.0 × 10−6 g L−1. The method was successfully applied for BB detection in juices and candies. This method has a number of advantages, such as the facile synthesis of YVO4:Eu NCs, a simple and quick quantitative procedure and competitive analytical performance.
研究领域:
分析化学
·
食品科学
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DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Lin Yuan,Lizhen Liu,Zhi Mi,Meng Chen,Yunfeng Bai,Jun Qin,Feng Feng
Amaranth (AMA), a common food additive, is important to strictly control the content of food for the human body. In this paper, an innovative method based on intrinsic dual-emissive carbon dots (Y/B-CDs) was used to detect AMA. Y/B-CDs have two emission wavelengths at 416 and 544 nm with the excitation wavelength at 362 nm. The addition of AMA can rapidly quench the fluorescence of the two peaks with different degrees, and ratiometric detection can be achieved. Quantitative analysis showed two linear ranges of 0.1–20 μM and 20–80 μM, and detection limits are 42 and 33 nM, respectively. Moreover, good results were obtained for the detection of AMA in beverages and candy using Y/B-CDs. This suggests that the constructed sensor has the potential to detect AMA in real samples.
研究领域:
分析化学
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食品科学
·
纳米技术
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2021
·
IF 6.953
Zhiying Shao,Jilai Lu,Jian Ding,Fengjiao Fan,Xinyang Sun,Peng Li,Yong Fang,Qiuhui Hu
Chitosan-pectin gel beads (CPBs) were synthesized via a facile and green method and applied to remove heavy metals from aqueous solution. The structural characteristics of CPBs were investigated by SEM and FTIR, the mechanical strength of CPBs was measured by Texture Analyzer and the stability of CPBs was evaluated in acidic solution. To study the adsorption characteristics, the effect of pH, contact time, initial heavy metals concentration, temperature, adsorption mechanism and regeneration were systematically investigated. The adsorption kinetics fitted well pseudo-second-order model, and the adsorption isotherms were well described by Langmuir model. The maximum adsorption capacities of Cu(II), Cd(II), Hg(II) and Pb(II) were 169.4, 177.6, 208.5 and 266.5 mg/g, respectively. The adsorption-desorption experiments revealed that the CPBs exhibited a great reusability. Thus, the synthesized CPBs in this study had the potential to be utilized as an environment-friendly and green adsorbent for the removal of heavy metals.
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
Polymers
·
2023
·Vol. 15
·期 9
·1998
·
IF 5
Rong Xu,Jiafeng Tian,Yusheng Song,Shihui Dong,Yongjun Zhang
Multiple responsive hydrogels are usually constructed by the addition of many different functional groups. Generally, these groups have different responsive behaviors which lead to interleaved and complex modes of the multi-response system. It is difficult to get a practical application. In this study, we show that multi-response hydrogels can also be constructed using dynamic bonds as crosslinks. The multiple responsive hydrogel films with thicknesses on the sub-micrometer or micrometer scale can be fabricated from P(DMAA-3-AAPBA), a copolymer of N,N-dimethylacrylamide, 3-(acrylamido)phenylboronic acid, and poly(vinylalcohol) (PVA) though a simple layer-by-layer (LbL) technique. The driving force for the film build up is the in situ-formed phenylboronate ester bonds between the two polymers. The films exhibit Fabry–Perot fringes on their reflection spectra which can be used to calculate the equilibrium swelling degree (SDe) of the film so as to characterize its responsive behaviors. The results show that the films are responsive to temperature, glucose, and fructose with simple and practical linear response modes. More importantly, the speed of which the films respond to glucose or fructose is quite fast, with characteristic response times of 45 s and 7 s, respectively. These quick response films may have potential for real-time, continuous glucose or fructose monitoring. With the ability to bind with these biologically important molecules, one can expect that hydrogels may find more applications in biomedical areas in the future.
研究领域:
材料科学
·
生物医学工程
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF PHARMACEUTICS
·
2019
·
IF 4.213
Heliu Jiang,Xiang Yu,Rongzhen Fang,Zhimei Xiao,Yiguang Jin
Oral ulcer is one common mucosal disease with high prevalence. Here, capsaicin candies were prepared based on the stereolithographically (SLA) 3D printed molds. The molds can be freely designed depending on the needs of patients, involving symmetric shapes (e.g., round, four-lead clover and cube), asymmetric shapes (e.g., car) and various color (e.g., blue, red and yellow). A two-part-combined mold was filled with the xylitol-based material and separated to obtain hard candies. Capsaicin was amorphous in the candies according to the differential scanning calorimetry and X-ray diffraction. Poloxamer 188 improved the release of capsaicin from the candies. Rat oral ulcer models were established on the tongue with phenol liquids. The blank candy, 0.05% capsaicin candy and dexamethasone were respectively administered on the ulcer once daily. On Day 7, a healing rate of 97.8% was achieved by the capsaicin candy, much higher than those in the other groups. Moreover, the blank candy also showed the remarkable ulcer healing effect due to the presence of xylitol and poloxamer. Capsaicin remarkably enhanced the reepithelialization of ulcer tissues and showed strong anti-inflammatory effect by reducing the expressions of THF-α and IL-6. 3D printing-based capsaicin candies provide an interesting therapeutic choice for the people with oral ulcer.
研究领域:
药剂学
·
材料科学
·
牙科学
·
药物递送
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产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Yecang Tang,Xuemei Dong,Minhui Wang,Beibei Guo
Novel dual-emission fluorescent nitrogen-doped carbon dots ( N -CDs) were synthesized by a facile one-pot hydrothermal method using ascorbic acid and rhodamine B as precursors and melamine as nitrogen source. The obtained N -CDs exhibited dual-emitting peaks at 435 nm and 578 nm under the single excitation of 350 nm. The fluorescence at 578 nm was more effectively quenched by indigo carmine (IC) based on the internal filtration effect and aggregation-induced emission quenching. Meanwhile, the apparent color change of N -CDs from pink to blue-purple after adding various concentrations of IC could be clearly observed with the naked eye. Therefore, a ratiometric fluorescent and colorimetric dual-signal probe based on N -CDs was developed for IC detection with high selectivity and sensitivity. The addition of IC caused the ratiometric fluorescent value ( F 435 / F 578 ) to increase linearly within the range from 0 to100 µM with a detection limit (LOD) of 0.18 µM and the colorimetric signal presented a linear response in the range of 0–133 µM with a LOD of 57.4 nM. Furthermore, the IC in juice drink, candy, and water was successfully detected. Besides, the N -CDs were also designed as a ratiometric temperature probe, and the ratiometric fluorescence signal ( F 435 / F 578 ) was linearly and reversibly responsive to temperature in the range of 20–75 °C.
研究领域:
分析化学
·
材料科学
·
环境科学
·
食品科学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Tong Xin,Mingxuan Chen,Zewei Liu,Ruiwen Luo,Qinglei Xing,Peng Bai,Xianghai Guo,Jiafei Lyu
The past two decades have witnessed the potentials of metal–organic frameworks (MOFs) for the adsorptive separation of difficult mixtures due to their designable porosity and significant surface area. In this work, two Zr 6 -based metal–organic framework materials with different pore sizes, NU-906 and NU-1008, were synthesized and evaluated as adsorbents for fructose/glucose separation, which is very important for sustainable biomass utilization. The two materials were characterized and studied, including the kinetics, isotherms, and thermodynamics by batch adsorption experiments, which can be well described by pseudo-second-order kinetics and Langmuir model (NU-906), Freundlich model (NU-1008), and the adsorption mechanism is described in terms of pore exclusion. The experimental results showed that NU-906 exhibited record-breaking adsorption selectivity towards fructose, whose static selectivity factor was up to 13.7. The NU-906 material with expanded particle size was further studied as filling of the chromatographic column for dynamic adsorption, and the dynamic selectivity factor was about 4.0, which was much higher than the column selectivity factor (∼2.5) used in the industry at present. In addition, three adsorption/regeneration experiments demonstrated its reusability.
研究领域:
化学工程
·
材料科学
·
分离科学
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产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Jingyu Wang,Yuling Ren,Huiru Zhang,Jianquan Luo,John M. Woodley,Yinhua Wan
Separation of monosaccharides and monovalent salts is important in the biorefinery and food industry. Nanofiltration (NF) technology is promising for this purpose but its poor selectivity still needs to be addressed. In this work, the separation of monosaccharides and monovalent salts by NF is improved by regulating the surface charge and pore size distribution of polyamide NF membranes. The carboxyl groups on the polyamide membrane are selectively activated by N-(3-Dimethylaminopropyl)-N′-ethyl carbodiimide (EDC) and N-hydroxy succinimide (NHS), and subsequently molecules with amino groups are grafted on the membrane to reduce the effective pore size and electronegativity. The conditions and grafted molecules are optimized, and polyethyleneimine (600 Da) is selected as the best for enhancing the separation of glucose/fructose and KCl. Such targeted modification is found to reduce the effective mean pore size while maintaining the porosity of the NF270 membrane, due to pore segmentation. This results in a remarkable improvement in glucose/fructose rejection (from 67.96% to 84.14%) and separation factor (from 2.20 to 6.78), with only a 4.70% permeability loss. The modified membrane also maintains separation performance in crossflow filtration and after alkaline cleaning (pH 12), which outperforms the pristine NF270 and those modified by mussel-inspired coating and simple physical adsorption.
研究领域:
生物精炼
·
食品工业
·
纳滤技术
·
膜科学
·
化学工程
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产品关联
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2023
·
IF 12.6
Yongfeng Chen,Yufeng Sun,Xiaomin Pang,Ruiqiang Wang,Geoffrey I.N. Waterhouse,Zhixiang Xu
Synthetic pigment Ponceau 4 R is a commonly used additive in the process of various foods. Due to its potential toxicity to humans, realizing high sensitivity and rapid detection of Ponceau 4 R is extremely important. In this study, we synthesized a novel dual-network magnetic conductive hydrogel (MCHG) via a simple one-pot low temperature stirring method. In MCHG, cationic guar gum (CGG) and β-cyclodextrin (β-CD) formed a primary three-dimensional network cross-linked by N, N-methylene bisacrylamide. A second network was formed in MCHG by CGG, β-CD and magnetite@carboxylate-terminated carbon nanotubes (Fe 3 O 4 @COOH-MWCNTs) through hydrogen bonding and electrostatic interactions . Fe 3 O 4 @COOH-MWCNTs enhanced cross-linking in the MCHG hydrogel, whilst also boosting the equilibrium adsorption capacity of Ponceau 4 R (61.8 mg g −1 ), electrical conductivity and electrocatalytic performance. Application of MCHG to a glassy carbon electrode (GCE) created a highly sensitive electrochemical sensor for the detection of Ponceau 4 R. Under optimized testing conditions, the sensor offered a very wide linear range (0.01–200.0 μM) and a low limit of detection (1.8 nM) for Ponceau 4 R. When the sensor was applied to the detection of Ponceau 4 R in spiked honey and liqueur samples, excellent recoveries were achieved (88.2%–107.0%). Furthermore, analyses of commercial biscuit and candy samples using the MCHG/GCE sensor and a national standard ultraviolet spectrophotometry method afforded identical results. Results demonstrate that multifunctional hydrogels show great promise as signal amplification agents in electrochemical detection of target compounds in foods.
研究领域:
分析化学
·
材料科学
·
食品科学
·
电化学
·
纳米技术
✓ 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）