INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Qingfeng Dong,Yaqi Dai,Weiting Wang,Yanli Ma,Li Li
In this research, the carvacrol (CAR) loaded cellulose acetate phthalate (CAP) /shellac (SH) films were prepared via electrostatic repulsion strategy and casting method. The CAP/SH-CAR films demonstrated excellent tensile strength , while also exhibiting good UV light barrier and thermal stability . The results showed that the addition of CAR significantly improved the barrier of the CAP film to water vapor and oxygen permeability. When the addition amount of CAR was 0.9 % (w/w) with respect to CAP content, the CAP/SH-CAR films exhibited good antibacterial activity and effectively reduced the growth of S. aureus and E. coli by approximately 47.9 % and 50.9 %, respectively. The presence of SH improved the retention rate of CAR in CAP/SH-CAR films, with the retention rate ranging from 45.2 to 56.8 %. Finally, the CAP/SH-CAR films were applied to preserve the mackerel fillets, indicating that the rate of freshness deterioration had been delayed and showing a good freshness preservation effect. Therefore, the CAP/SH-CAR films have the potential to be used as food packaging materials.
研究领域:
食品科学
·
材料科学
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DOI
高影响因子
JOURNAL OF FOOD ENGINEERING
·
2026
·
IF 5.8
Minghui Han,Fei Hu,Jinger Huang
Similarly charged SNP and CMS co-assemble via non-electrostatic interactions. • SNP/CMS mass ratio precisely tunes wettability for dense interfacial coverage. • LAOS reveals a robust gel network with pronounced non-linear yielding behavior. • Emulsions show high resilience to salt (800 mM), freeze-thaw, and heat (50 °C). • A food-grade strategy for robust Pickering emulsions is provided. : Pickering emulsions with stability under processing and storage conditions are of significant interest for structured food systems. In this study, Pickering emulsions were stabilized using similarly charged shellac nanoparticles (SNP, −30.5 mV) and carboxymethyl starch (CMS, −40.1 mV). Despite electrostatic repulsion, FTIR, urea-disruption, and pyrene fluorescence analyses suggested that hydrogen bonding and hydrophobic association contributed to SNP/CMS co-assembly. By adjusting the SNP/CMS mass ratio, interfacial wettability was precisely tuned, with the three-phase contact angle increasing from 76.9° to 103.5°, thereby promoting particle adsorption at the oil–water interface and the formation of a compact interfacial layer. The resulting emulsions exhibited self-supporting three-dimensional networks with elastic-dominated viscoelasticity (G′ > G″) and pronounced nonlinear yielding behavior under large-amplitude oscillatory shear (LAOS). These emulsions maintained high stability under freeze–thaw cycles and high ionic strength (up to 800 mmol/L NaCl). Thermal stability was maintained up to 50 °C. This study provides insight into the non-electrostatic co-assembly of similarly charged SNP/CMS complexes and offers a material-specific strategy for designing salt-tolerant structured Pickering emulsions.
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DOI
高影响因子
POLYMER
·
2025
·
IF 4.5
Zheng-En Piao,Jingzhou Guo,Sheng-Ao Xu,Jie-Xin Wang,Dan Wang,Jian-Feng Chen
Encapsulation of tetraphenylethylene (TPE) molecules with aggregation-induced emission effect in polymers have found many applications, while green synthetic approach toward luminescent nanoparticles with simple operation process and robust mass-scale production remain challenging. High-gravity-assisted technology for encapsulating TPE into low-cost and readily available shellac (Lac) is developed toward effective scaling up. Anti-solvent processing in rotating packed bed (RPB) is used for TPE@Lac nanoparticles by using tetrahydrofuran as solvent and water as antisolvent. Through mixing intensification by RPB, undesirable effects of the mixing state can be mitigated, ensuring high efficiency in industrial production. Luminescent nanoparticles with average size of 119.1 ± 0.9 nm and excellent dispersibility in aqueous solutions were prepared, exhibiting strong blue emission under excitation of ultraviolet light. Preliminary applications of TPE@Lac nanoparticles as fluorescent sensor in shape memory polymeric nanocomposites for monitoring temperature changes during cold chain storage are demonstrated.
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产品关联
DOI
高影响因子
Food Packaging and Shelf Life
·
2025
·
IF 10.6
Jin-Ming Tan,Rui Cui,Teng-Gen Hu,Xiao-Xi Li,Hong Wu
To effectively control mold and spoilage of bread and extend its shelf life, this study developed an active packaging material that possesses both antifungal activity and excellent mechanical properties. Herein, shellac nanoparticles (SNPs) were used as Pickering stabilizers to prepare SNPs-synergistic combination of cinnamaldehyde and citral (S CC ) Pickering emulsion (SNPs-S CC ). The SNPs-S CC was incorporating into chitosan (CS) to fabricate CS/SNPs-S CC film. Compared to the pure CS film, the tensile strength of the CS/SNPs-S CC film was enhanced by 58.89 %, while the moisture content, water solubility, water vapor permeability, and oxygen permeability were reduced by 52.89 %, 26.88 %, 45.28 %, and 40.51 %, respectively. Additionally, the CS/SNPs-S CC film demonstrated almost complete absorption of ultraviolet light in the wavelength range of 100–400 nm and was capable of complete biodegradation within 50 days. In vitro, antifungal tests revealed that the CS/SNPs-S CC film exhibited satisfactory antifungal activity against Aspergillus niger and Penicillium citrinum . Notably, the CS/SNPs-S CC film significantly extended the shelf life of bread by 5 days compared to the oriented polypropylene (OPP) film. Therefore, the CS/SNPs-S CC film holds potential for application as a novel active packaging material for bread preservation.
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
RSC Advances
·
2016
·Vol. 6
·期 60
·55618-55625
·
IF 3.289
Kun Li,Hua Zheng,Hong Zhang,Wen-wen Zhang,Kai Li,Juan Xu
This study made use of a novel totally chlorine-free (TCF) bleaching approach to prepare bleached shellac. Some single factor experiments were employed to investigate the effects of the main factors in the H2O2 bleaching method. A new chlorine-free bleached shellac resin was obtained in the Box–Behnken design responsive surface optimal experimental conditions (pH, 9.0–11.0; 1.33 mL g−1, concentration of 30% hydrogen peroxide; 2.0 h, dropping time of hydrogen peroxide; 7.2 h, bleaching time; 90 °C, temperature). The yield and color index of the bleached shellac obtained under the optimal experimental conditions were 80.84% and 0.5675 respectively. The result of the physicochemical property test, IR spectrum and DSC characterization indicate that the properties of H2O2 bleached shellac are similar to commercially refined shellac resin. Moreover, it is noteworthy that the H2O2 bleached shellac was remarkable in alcohol solubility and thermal lifetime tests. It had a higher acid value and a lower softening point compared with commercially refined shellac resin, which can be applied safely in many fields including food and medical industries without chlorine residues.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 26
·e52421
·
IF 3.057
Yuanzuo Zou,Fen Wang,Angran Li,Jie-Xin Wang,Dan Wang,Jian-Feng Chen
Practical application of versatile nanomaterials to food engineering is desirable. In this study, highly encapsulated curcumin-loaded shellac (Cur@Lac) nanoparticles are efficiently prepared via a rotating packed bed (RPB). In this modified co-precipitation process, the morphology of Cur@Lac nanoparticles is systematically investigated under experimental parameters involving the high-gravity level, the volume of antisolvent and the concentration of shellac. By virtue of the highly structured polymeric ester matrices of shellac and adequate supersaturation brought from RPB on a microscale, the obtained Cur@Lac nanoparticles with uniform size exhibit high encapsulation efficiency of over 96%. After 2 months of storage at room temperature, the aqueous Cur@Lac nanodispersions exhibit long-term stability with no agglomeration or sedimentation, and the final retention rate of curcumin was over 85%. Colored drinks of fruit syrup (pH = 4.0), fruit soda (pH = 6.0), and soda water (pH = 8.3) are prepared by using the Cur@Lac as the colorant, which possessed orange-yellow color. The nanocomposites of alkali-sensitive indicators based on cellulose paper and gelatin film demonstrated in the work show promising application value for sensing of alkaline solution and gas of perishable food.
研究领域:
食品科学
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纳米技术
·
化学工程
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产品关联
DOI
高影响因子
Journal of Future Foods
·
2025
·
IF 7.2
Jinju Ma,Lijuan Yu,Kun Li,Hong Zhang,Baoshan Tang,Juan Xu,Lanxiang Liu
The rapid deterioration of fresh-cut fruits and vegetables remains a critical challenge to food safety and sustainability, highlighting the need for natural preservation strategies. Herein, we presented a bio-inspired shellac gel/chitosan (SG/CS) edible coating with gas-permeation control to extend the shelf life of fresh-cut lotus root. Molecular dynamics simulations revealed that shellac, as an atypical amphiphile, self-assembled under glucono delta-lactone induction through hydrophilic and hydrophobic interactions into transient vesicles or micelles, which aggregated into a porous gel network. Shellac gel particles incorporated into chitosan coatings retained abundant nanoporous structure upon drying on fresh-cut lotus root, modulating gas permeability and enabling a gas-permeation controlled edible coating. Acute oral toxicity tests in mice (LD₅₀ > 15,000 mg kg⁻¹) confirmed the coating to be practically non-toxic. Functionally, SG/CS coatings suppressed respiration rate, ethylene release, moisture loss, and enzymatic browning, maintaining color, texture, and nutritional quality of lotus root by modulating the surrounding gas microenvironment. Notably, the 0.1% SG/CS coating achieved superior preservation effects, extending freshness of fresh-cut lotus root to 8 days. This study introduces a safe and efficient preservation strategy and provides a promising alternative to conventional antibacterial or antioxidant coatings in the development of edible coatings for fresh-cut produce.
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Shu-Fang Li,Teng-Gen Hu,Hong Wu
Quercetin possesses multiple biological activities. To achieve efficient colon-specific release of quercetin, new composite nanofibers were developed by coating pH-responsive shellac on hydrophilic gelatin through coaxial electrospinning. These composite nanofibers contained bead-like structures. The encapsulation efficiency (87.6–98.5 %) and loading capacity (1.4–4.1 %) varied with increasing the initial quercetin addition amount (2.5–7.5 %). FTIR, XRD, and TGA results showed that the quercetin was successfully encapsulated in composite nanofibers in an amorphous state, with interactions occurring among quercetin, gelatin, and shellac. Composite nanofibers had pH-responsive surface wettability due to the shellac coating. In vitro digestion experiments showed that these composite nanofibers were highly stable in the upper gastrointestinal tract, with quercetin release ranging from 4.75 % to 12.54 %. In vivo organ distribution and pharmacokinetic studies demonstrated that quercetin could be sustainably released in the colon after oral administration of composite nanofibers. Besides, the enhanced anticancer activity of composite nanofibers was confirmed against HCT-116 cells by analyzing their effect on cell viability, cell cycle, and apoptosis. Overall, these novel composite nanofibers could deliver efficiently quercetin to the colon and achieve its sustained release, thus potential to regulate colon health. This system is also helpful in delivering other bioactives to the colon and exerting their functional effects.
研究领域:
药学
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纳米技术
·
生物医学工程
·
药物递送系统
·
癌症研究
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产品关联
DOI
PubMed
高影响因子
Journal of Future Foods
·
2024
·
IF 5.2
Baoshan Tang,Jinju Ma,Lanxiang Liu,Juan Xu,Hong Zhang,Kun Li,Xinghao Tu,Qingfang Guan
In order to improve the water-resistance and ultraviolet (UV) barrier properties of pullulan (PL) film, edible composite films were prepared by solution casting based on PL and shellac (SH). The physical properties, thermal stability, mechanical properties, water vapor permeability and UV barrier of the composite films were characterized. The analysis of the functional properties revealed that the composite films had good compatibility, water-resistance (33.50˚–60.15˚), and strong UV-blocking properties (84.60%–0.00%). The addition of SH improved the water-resistance and mechanical properties of the films, but the thermal stability was slightly reduced. These films can be used as an edible coating on Chinese cherries. According to the characteristics of weight loss, decay incidence and other indicators of cherries, the PL-SH composite films can keep Chinese cherries fresh at room temperature at least for 7 days. Therefore, PL-SH composite films may be an environmentally friendly packaging material with application prospects in the fruit preservation industry.
研究领域:
食品科学
·
材料科学
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Cong Jiang,Zong Meng
The development of green and efficient catalytic systems is crucial for sustainable chemical processes. This study engineered shellac nanoparticle-lipase conjugates for biphasic biocatalysis. Taking advantage of the inherent amphiphilicity and pH-triggered interfacial behavior of the shellac, the conjugates exhibited dual functionality as intelligent Pickering emulsifiers and interfacial biocatalysts. The covalent conjugation strategy achieved a protein loading capacity of 107.97 ± 5.24 mg/g under optimized conditions while preserving interfacial responsiveness. Reversible emulsification/breaking transitions were precisely regulated at least 30 times through pH adjustment or alternating CO₂/N₂ treatments, enabling convenient catalyst recovery. When applied to the esterification of phytosterols with oleic acid, the conjugates exhibited a higher esterification rate (78.93 %, 1.5-fold enhancement compared with the free lipase), retained 85.0 % initial catalytic activity after six consecutive cycles. The responsive Pickering system combined exceptional recyclability and enhanced catalytic performance, providing an innovative pathway for the development of Pickering interfacial catalysis.
研究领域:
绿色化学
·
生物催化
·
纳米技术
·
胶体与界面科学
·
酶工程
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产品关联
DOI
PubMed
高影响因子
ACS Omega
·
2020
·
IF 2.87
Kun Li,Baoshan Tang,Wenwen Zhang,Zhengjun Shi,Xinghao Tu,Kai Li,Juan Xu,Jinju Ma,Lanxiang Liu,Hong Zhang
Bleached shellac, a widely used material in food processing and products, was deeply affected in terms of structures and properties by the bleaching method. In the present study, a marked difference was observed between the damage performances of sodium hypochlorite-bleached shellac (SHBS) and hydrogen peroxide-bleached shellac (HPBS). The main bleaching damage reactions of sodium hypochlorite were the addition of double bonds to generate chlorine and the oxidation of hydroxyl to form aldehydes or ketones. In the case of hydrogen peroxide, degradation of shellac resin was caused by the hydrolysis of ester bonds and the oxidation of hydroxyl groups to form aldehydes and ketones, as well as carboxylic acids with deep oxidation. Based on the structural characterization of shellac resin, the bleaching damages were affected by the bleaching agent via the oxidizable groups, such as the unsaturated double bonds, hydroxyl and aldehyde groups in cyclic terpenes, and fatty acid chains. The differences could be attributed to the action of sodium hypochlorite on the hydroxyl group of aldehyde or ketone. Conversely, hydrogen peroxide bleaching oxidized the hydroxyl group and aldehyde group to carboxylic acid and initiated the hydrolysis reaction of the ester bond of the shellac resin, leading to the degradation of the resin. Thus, understanding the mechanism underlying the bleaching damage could provide a scientific basis for the subsequent targeted regulation of bleaching damage.
研究领域:
化学
·
材料科学
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DOI
PubMed
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2023
·
IF 6
Yang Guo,Zhi-guo Zhang,Wei-wei Hu,Wei-rong Li,Jian-ming Zhang,Cheng-cheng Zhang,Da-qun Liu,Wei-cheng Wu
The acid sensitivity and moisture absorption of dry probiotic products during digestion and storage are challenges. In this study, different mass ratios (1, 1.5, 2, 2.5, 5) of buckwheat protein (BWP) and hydrophobic polyester shellac were firstly combined by a pH-shifting method and then applied for the construction of Lactobacillus plantarum ( L. plantarum ) microcapsules. Circular dichroism (CD) and fluorescence spectroscopy results revealed that the complexes were stabilized primarily by hydrophobic interaction forces and the conformational changes after co-folding with shellac. With a decreasing ratio of shellac, the enthalpy (ΔH) and peak temperature increased, resulting in enhanced thermal stability. BS2 encapsulated probiotics successfully enhances the survival of L. plantarum during freeze-drying and gastrointestinal (GI) digestion. The probiotic was fully coated by the complex, determined through scanning electron microscopy (SEM) images. After encapsulated, the colon adhesion efficiency enhanced 30.92% than free cells. The encapsulated probiotics presented a maximum reduction of 0.89 log CFU/mL after 30 days of storage at 25 °C, and probiotics protected by the BS1 complex had superior storage stability under an Aw of 0.76, for which K value was 1.218. BWP-based shellac pH-shift complexes exhibit enormous potential for the encapsulation of probiotics.
研究领域:
食品科学
·
微生物学
·
生物技术
·
药学
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DOI
高影响因子
危险品化学品经营许可证（带存储）