LWT-FOOD SCIENCE AND TECHNOLOGY
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2020
·
IF 4.006
Jingyang Yao,Jinxiang Chen,Jing Yang,Yuxin Hao,Yanling Fan,Chunyu Wang,Nana Li
The free, soluble-bound (esterified and glycosylated) and insoluble-bound phenolics from the dry raspberry pomace without seeds (RP) and raspberry seeds (RS) were obtained by acidic and alkali treatment. The total phenolic contents of different phenolic fractions from RP and RS by the Folin method followed the order: free > esterified ≈ insoluble-bound > glycosylated. Then 18 phenolics from RP and RS were quantified by HPLC-MS. Free phenolics had the highest total tested phenolic contents, while glycosylated phenolics were the lowest. Their antioxidant activity was increased by the increasing phenolic contents of different fractions. Free phenolics in raspberry pomace had the highest antioxidant activity by DPPH assay . RS-esterified phenolics had the hightest tyrosinase inhibitory activity (TIA) by enzyme activity analysis, which was equivalent to the TIA of 1.57 mM vitamin C. Among 9 typical phenolics, quercetin, chlorogenic acid, gallic acid and p -hydroxybenzoic acid on the TIA showed obvious promoting effects, while catechin, epicatechin, and caffeic acid exhibited a significant background effect. Therefore, p -hydroxybenzoic acid and gallic acid in RS-esterified phenolics were of great significance for the TIA. These results are beneficial to the comprehensive evaluation and utilization of the phenolic compounds in raspberry pomace.
研究领域:
食品科学
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植物化学
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营养学
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生物化学
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DOI
高影响因子
Catalysts
·
2025
·Vol. 15
·期 12
·
IF 4
Yang Yang,Kangkang Shang,Xiaorui Gao,Xingmiao Zhu,Mengying Ling,Pu Zheng,Shichao Xu,Pengcheng Chen
Raspberry ketone (RK) is the primary aromatic compound in raspberry fruit, which is widely utilized in perfume, cosmetics, and food additive industries. Currently, RK is predominantly produced chemically. RK biosynthesis through enzyme or whole cell has garnered significant attention due to the mild reaction conditions and the process being regarded as ‘natural’. This study proposed a ‘dual-microorganism, two-phase’ stepwise cascade strategy to produce RK from an economical precursor, 4-hydroxybenzaldehyde (4-HBD). An acetone-tolerant deoxyribose-phosphate aldolase DERAEc(S238D) mutant was obtained through a site-specific rigidification strategy for converting 4-HBD to 4-hydroxybenzylaceton (4-HBA). Then, an engineeredE. colico-expressing isocitrate dehydrogenase and raspberry ketone synthaseRiRZS1 with a citrate-sodium citrate buffer to recycle nicotinamide adenine dinucleotide phosphate (NADPH) was constructed for the conversion of 4-HBA to RK. The final concentration of RK was 50.00 ± 1.92 mmol·L−1with a yield of 86.96%. This strategy provides a scalable coenzyme self-recycling and two-phase catalysis platform for high-value phenolic compounds.
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高影响因子
MICROCHIMICA ACTA
·
2021
·Vol. 188
·期 7
·1-14
·
IF 5.833
Shi Zhaoxia,Xia Ling,Li Gongke,Hu Yufei
Based on platinum nanoparticle–embedded raspberry-liked SiO 2 , a sensitive and selective electrochemical sensor was developed for simultaneous determination of eugenol (EU) and methyleugenol (MEU). Raspberry-liked SiO 2 (RL-SiO 2 ) was characterized with open pores on the surface, which can be used as a path for utilizing the inner space fully. So, platinum nanoparticles (Pt NPs) could be embedded in the inner and outer surface of RL-SiO 2 . As a carrier, RL-SiO 2 not only avoided the agglomeration of the Pt NPs but also improved the catalytic performance. Therefore, the prepared Pt NPs@RL-SiO 2 /GCE exhibited excellent electrocatalytic activity for simultaneous determination of EU and MEU; the linearity ranges were 0.50 ~ 60 μmol/L for EU at a working potential of 0.65 V (vs. saturated calomel electrode) and 0.50 ~ 50 μmol/L for MEU at a working potential of 1.10 V; the detection limits were 0.12 μmol/L and 0.16 μmol/L ( S/N =3); and the relative standard deviations (RSDs) were 3.2% and 4.5%, respectively. In addition, Pt NPs@RL-SiO 2 /GCE was successfully applied to the analysis of fish samples; the obtained recoveries were between 92.0 and 107%. Notably, the results conducted on samples were highly consistent with those obtained from high-performance liquid chromatography. It can be concluded that the study provided a simple method for simultaneous electrochemical determination of EU and MEU in fish samples. Graphical abstract
Schematic illustration of the preparation of RL-SiO2@Pt NPs/GCE for simultaneous determination of eugenol and methyleugenol in fish samples.
研究领域:
分析化学
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纳米技术
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电化学
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食品科学
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DOI
PubMed
高影响因子
Current Research in Food Science
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2022
·
IF 6.269
Yang Lin,Cong Li,Ping Shao,Ligang Jiang,Bilian Chen,Mohamed A. Farag
Anthocyanins (ACNs) as one category of water-soluble flavonoid pigments are increasingly employed in pH sensing indicator applications for monitoring food freshness. Nevertheless, considering that anthocyanins are sensitive to environmental factors, their practical applications in food industries are still rather limited. In order to improve the stability of anthocyanins and capitalize upon their application in pH-color responsive intelligent packaging, this study aims to graft octanoic aid onto raspberry anthocyanins catalyzed by immobilized Candida antarctica lipase B (Novozymes 435). Structural analyses based on Fourier transform infrared spectroscopy (FTIR), UV–Vis, liquid chromatography-mass spectrometry (LC-MS), and nuclear magnetic resonance (NMR) revealed that octanoic acid was regioselective grafted onto the 6-OH position of its glucoside. The acylation efficiency of C3G by octanoic acid up to 47.1%. The octanoic acid moiety was found to improve lipophilicity, antioxidant activity and stability of C3G. In addition, acylated derivative also maintained the pH-color response characteristics of nature ACNs and exhibited excellent NH 3 response properties. These results indicated that acylated anthocyanins exhibit potential application as intelligent packaging indicator for monitoring food freshness.
研究领域:
食品科学
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化学工程
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材料科学
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产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Lin Wang,Wei Liu,Xianrui Chen,Zhenzhen Wu,Xiuqing Guan,Yanping Lai,Zipei Zhang,Jingcheng Hao
The shelf life of delicate fruits, such as raspberries, is a significant challenge in food packaging. Although natural polysaccharide-based films are safe and biodegradable, their poor mechanical strength, high water sensitivity, and weak barrier properties often limit their use. This study incorporated konjac glucomannan (KGM) and gallic acid-modified MXene (MXene@GA) and carefully designed natural deep eutectic solvents (NADES) to develop a novel biobased nanocomposite film. The NADES systems were composed of glycine-citrate-caffeic acid, l-carnitine-citrate-caffeic acid, and amidosulfonic acid-citrate-caffeic acid. Moreover, they act as green plasticizers and help tailor the internal structures and surface properties of the films. The resulting films exhibited enhanced strength, ultraviolet protection, water resistance, and antioxidant activity. The incorporation of MXene@GA and NADES promoted better dispersion and interaction with the polymer matrix, further enhancing the mechanical and barrier properties. The final nanocomposite films were applied for raspberry preservation, which effectively extended the shelf life of the fruits at room temperature and under 4 °C storage conditions while maintaining fruit quality. This study provides a practical and innovative solution for developing safe and multifunctional food packaging materials for perishable products.
研究领域:
食品科学
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包装材料
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纳米复合材料
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农产品贮藏
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天然高分子
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功能食品
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DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
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2024
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IF 2.7
Chunbao Du,Zichun Feng,Changji Yin,Xingang Jia,Yameng Zhao,Yuan Cheng
Topical fluid foam has a considerable application value in the field of topical medicine due to benefits such as simple uniform distribution on the skin’s surface, ease of use, and good patient compliance. The longevity of topical fluid foam is crucial in assessing its therapeutic success, particularly in complicated heat and salt settings. Nanoparticles could improve the stability of topical fluid foam, but their density, size, homogeneity, and surface characteristics are difficult to be taken into consideration simultaneously, resulting in the unclear underlying molecular mechanism. In this work, the raspberry-like microspheres (RM) with a high cross-linked structure were synthesized using a simple one-step dispersion polymerization. The stabilizing foam function of RM in fluid foam was connected to their size, surface chemical characteristics, and foaming temperature. The effect of gravity on foam stability induced by liquid flow acceleration of RM competed fiercely with their size and surface chemical characteristics, and this competitive connection was highly influenced by temperature. The unique surface properties of RM1 (polymerization time of 1h) allowed for their irreversible adsorption at the gas-liquid interface following sodium dodecyl sulfate (SDS) adsorption. RM1 could counteract the harmful effect of gravity on foam stability at a high temperature of 60 oC, enhancing the surface elasticity of the liquid film and improving foam stability. This work is a fantastic starting point for the development of novel nanomaterials to improve the stability of topical fluid foam for pharmaceutical and medical applications.
研究领域:
药学
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材料科学
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胶体与表面化学
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DOI
高影响因子
FOOD CHEMISTRY
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2025
·
IF 9.8
Dong-Jun Hou,Quan-yuan Xie,Ming-Shun Chen,Yu-Lin Cheng,Bing Zhang,Zong-cai Tu,Lu Zhang
Ellagitannins (ETs) exhibit beneficial effects on gut microbiota modulation and bioactivity, but their instability compromises the delivery efficiency and absorption. Therefore, a double emulsion gel (DEG@RETs) loading with Rubus chingii Hu ETs (RETs) was constructed and optimized to enhance its gastrointestinal digestion stability and intestinal transformation. The optimal DEG@RETs formulation was 4 % pectin, calcium-induced gelation, W 1 /O: W 2 of 4: 6, and W 1 : O of 5: 5. Which achieved an encapsulation efficiency (EE) of 88.68 ± 4.36 %, maintained spherical structures with an EE (78.57 ± 1.34 %) after digestion. The DEG@RETs demonstrated pH and freeze-thaw stability while EE declined after heating at 90 °C. Cryo-SEM confirmed a crosslinked gel network. In vitro fermentation, transformation efficiency demonstrated significantly enhanced with urolithin A, urolithin B and ellagic acid increased by 7.37-, 3.19- and 7.87-fold respectively. These results proved that DEG@RETs can be an effective strategy to improve the colon-targeted delivery and biotransformation efficiency of RETs.
研究领域:
食品科学
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药剂学
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分子营养学
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生物利用度
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肠道微生物代谢
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产品关联
DOI
PubMed
高影响因子
Food Packaging and Shelf Life
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2025
·
IF 10.6
Xin Ding,Yiming Zhao,Xin Chen,Yanyan Huang,Zhihao Lin,Jing Wang,Ge Chen,Guangyang Liu,Xiaomin Xu,Bining Jiao,Xijuan Zhao,Donghui Xu
Chitosan film is frequently used to preserve food. However, the stability of chitosan film is poor, so it is crucial to strengthen the stability, anti-ultraviolet, antibacterial activity, anti-oxidation and continuous fresh-keeping activity of chitosan film. In this work, paeonol@ZIF-8 and Ag 2 CO 3 /Ag 2 O nano-heterojunctions were dispersed into chitosan/kudzu-based solution by matrix mixing and solution casting method, which successfully prepared a biodegradable nanocomposite film and used it for preservation of raspberry. Moreover, ZIF-8 provided a large number of active sites to PAE. The loading rate of PAE@ZIF-8 was 36.33 ± 0.82 % by a simple one-pot process. The paeonol@ZIF-8 had the effect of slow release in different food environments and intelligent response to pH. The Ag 2 CO 3 /Ag 2 O nano-heterojunctions also cooperated to inhibit bacteria by releasing silver ions. Meanwhile, the physical and chemical properties of chitosan film were improved, which could make it more suitable for food packaging. The improved film could block 90.32 % of UV–visible light. Moreover, its antioxidant and antibacterial properties were increased by 1.24 times and 4 times, respectively. It could extend the shelf life of raspberries to 5 days as the hydrophobic film. The nanocomposite film also effectively maintained cucumber slice quality. It also found that the migrating silver ion content of raspberry and cucumber slice complied with EU food safety law regulations. Importantly, the nanocomposite film was degradable and did not affect the germination and growth of the seed. Our work provides a sustainable multifunctional food packaging material that can be used to preserve perishable foods.
研究领域:
食品科学
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材料科学
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纳米技术
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高分子科学
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农业工程
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2018
·
IF 5.091
Shengyang Pan,Min Chen,Limin Wu
Raspberry-like polymer/inorganic compound hybrid colloidal spheres have attracted tremendous interest owing to their many potential applications, but most of them are concentrated on synthesis methods, controlling structures and morphologies. Herein, we synthesize raspberry-like poly(ethyl methacrylate)/SiO 2 colloidal spheres and further graft a hydrophilic diblock copolymer on the SiO 2 nanoparticles. The obtained copolymer-grafted hybrid sphere-based coatings are robust and display excellent underwater superoleophobic and anti-biofouling performances as well as self-repairing ability.
研究领域:
材料科学
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化学工程
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表面化学
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DOI
PubMed
高影响因子
MACROMOLECULAR RAPID COMMUNICATIONS
·
2021
·Vol. 43
·期 4
·2100599
·
IF 5.734
Kang Fu,Guoxian Zhang,Yibin Liu,Jiaojun Tan,Hepeng Zhang,Qiuyu Zhang
Mechanically robust superhydrophobic coatings have been extensively reported using chemically susceptible inorganic fillers like slica, titanium dioxide, and zinc oxide for constructing micro-nano structures. Organic particles are good candidates for improving chemical resistance, whereas the synthesis of organic particles with well-defined and stable micro-nano structures remains exclusive. Here, an all-organic, cross-linked superhydrophobic coating comprising raspberry-like fluorinated micro particles (RLFMP) and fluorinated polyurethane (FPU) is prepared via thiol-click reaction. Benefiting from the robust micro-nano structure of RLFMP and the excellent flexibility of FPU, the coating can maintain superhydrophobicity after severe alkali corrosion or mechanical damage, while the superhydrophobicity can be repaired readily by the fast recovery of micro-nano roughness and migration of branched fluoroalkyl chains to the coating surface. This design strategy is expected to provide a good application of thiol-click chemistry.
研究领域:
材料科学
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表面化学
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纳米技术
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2011
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IF 3.068
Xiaoyin Zhang,Yuan Ren,Min Chen,Limin Wu
This paper presents a feasible and efficacious procedure to synthesize polystyrene/upconversion nanocrystals (PS/UCNCs) nanocomposite spheres with raspberry-like structure via an in situ dispersion polymerization technique. During this process, polyacrylic acid (PAA) as stabilizer plays the key role in adsorbing UCNCs, including NaYF 4 :Yb 3+ –Er 3+ , NaYF 4 :Yb 3+ –Tm 3+ and NaYF 4 :Yb 3+ –Ho 3+ onto the PS surfaces. TEM and SEM images confirmed the raspberry-like morphology of the obtained nanocomposite spheres. The effect of synthetic conditions, for instances, PAA amount, type and concentration of UCNCs on the structure and fluorescence of the PS/UCNCs nanocomposite spheres were studied in detail.
研究领域:
材料科学
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纳米技术
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高分子化学
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Peiwen Zhu,Yi Wang,Xue Bai,Jianming Pan
Highly efficient adsorption of radioactive uranium from seawater is a grand challenge of mounting severity as the energy demand increases. To address this, a salicylaldoxime functionalized raspberry-like microbeads sorbent is created to achieve highly efficient uranium adsorption via the CO 2 -in-Water Pickering emulsion-assisted polymerization-induced self-assembly method. The prepared raspberry-like microbeads sorbent with a high density of accessible functional groups exhibits the maximum uranium adsorption capacity of 41.02 mg g −1 within 30 min, the time required to reach adsorption equilibrium is shorter than most of the reported amine-oxime functionalized microsphere adsorbents. In addition, under the coexistence of high-concentration metals such as Na + , Mg 2+ , K + , Ca 2+ , etc., the raspberry-like microbeads sorbent still showed the best affinity for uranium, which is mainly benefit from the specific binding between amine oxime group and uranium. Our work not only provides a general strategy for the rapid and selective adsorption of uranium from seawater, but also provides a new perspective for the controlled assembly of NSs and the preparation of nano-hybrid materials combining the advantages of micro/nano structures.
研究领域:
材料科学
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环境科学
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核科学
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化学工程
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DOI
高影响因子
危险品化学品经营许可证（带存储）