INDUSTRIAL CROPS AND PRODUCTS
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2025
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IF 6.2
Shuqi Dong,Bing Cao,Xuexia Wang,Lina Liang,Guoyuan Zou,Liang Yuan,Yanhua Chen
The polyurethane coatings of controlled-release fertilizers (CRFs) have problems with low biomass content and poor degradability. The residual coatings tend to be present in the soil as microplastics, which limits their environmentally sustainable application. This study prepared a fully bio-based polyurethane CO-LTI mainly from castor oil (CO) and ethyl ester L-lysine triisocyanate (LTI) using the one-pot method. The CO-LTI coatings have nutrient-controlled release properties. As the coating percentage increased from 3 % to 6 %, the minimum cross-sectional thickness of the coating measured by scanning electron microscopy (SEM) increased from 19 μm to 42 μm, which prolonged the time of controlled release under the effect of physical barrier. The CO-LTI coatings have good biodegradability in soil, with a remarkable biodegradation rate of 27 % within 12 months. The degradation properties of CO-LTI coatings were characterized using various techniques, including SEM, X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA) and atomic force microscopy (AFM). The biodegradation mechanism of the CO-LTI coating in soil was elucidated, and it was confirmed that the degradation was carried out under the action of chemical degradation related to microorganisms. The effects of coating residues on plant growth and soil bacterial communities were simulated by applying CRFs with different concentration gradients. They were confirmed to be related to the coating's concentration gradient and degradation process. This study provides a new approach for preparing environmentally friendly controlled-release fertilizers and valuable insights into the potential mechanisms of biodegradation and its impact on ecological environments.
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JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Kai Hu,Honghong Lyu,Haonan Duan,Zhenzhong Hu,Boxiong Shen
Oil spills are sudden, complex, and long-term hazardous, and the existing adsorption materials still have the disadvantages of small selective adsorption capacity, easy secondary contamination, and difficult to repair after breakage in practical applications. Herein, melamine foam (MF) coated by ball milled biochar (BMBC) and natural beeswax (Wax@BMBC@MF) was prepared by a bio-inspired functionalization method and further added with self-healing function (SH-Wax@BMBC@MF) to cope with complex environments, and applied to oil-water separation for oil adsorption. SEM and FTIR results showed that BMBC and natural beeswax nanoparticles successfully encapsulated the smooth surface of the melamine foam skeleton. The loading of natural beeswax increased the foam's ability to absorb oil and organic solvents from 0.6108–1.134 g to 0.850–1.391 g, and the oil-absorbing capacity of the foam remained at 0. 758–1.263 g after being cut by a knife and self-healing. The oil-absorbing capacity of SH-Wax@BMBC@MF remained in the range of 0.936–1.336 g under acid/alkali environment (pH =1–13). The surface functional groups of BMBC improved the surface roughness of the material and strengthen the MF skeleton to adsorb oils and organic solvents by capillary action. The generation of the di-coordinated structure by Fe 3+ and catechol group contributed the restoration of SH-Wax@BMBC@MF structure and oil absorption capacity. SH-Wax@BMBC@MF has superiority of superhydrophobic, superoleophilic, self-healing after damage, and environmental friendliness, which provides a promising solution for the treatment of oil spills at sea.
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JOURNAL OF CONTROLLED RELEASE
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2025
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IF 11.5
Nan Jiang,Wei Guo,Si-yu Wang,Xin-xin Liu,Yu-qing Yin,Ke-xin Xiong,Xiang-yu Li,Cheng Liu,Kai-hui Nan,Jiang-fan Chen,Jing-jie Wang
Caffeine is the most widely consumed bioactive ingredient in the world, which has been found to show great therapeutic potential in several posterior eye diseases. While intravitreal injection represents the ideal administration route for these disorders, it remains challenging to achieve sustained release of caffeine in the vitreous. Herein, we address this issue by loading crystalline caffeine within oleogels (Ca@oleogels), oily delivery vehicles which provide a hydrophobic environment that is opposite to the hydrophilic nature of their cargos. Mathematical modeling of the in vitro release profiles indicated the diffusion process of the drug from Ca@oleogels was playing a dominating role in caffeine release. Furthermore, sustained intravitreal delivery was evidenced by higher drug levels from 12 h until the end of the pharmacokinetic study (240 h) and a 3.2-fold reduction in C max in Ca@oleogel dosed rabbits compared to their caffeine dosed counterparts. Superior therapeutic effects were obtained with Ca@oleogels in a laser-induced mouse choroidal neovascularization model. Advantages of Ca@oleogels as caffeine delivery vehicles included excellent biocompatibility, low cost and simplicity of manufacturing as well, which indicated they can be administrated safely and were readily amenable to scale-up production cost-effectively. Moreover, sustained release of another hydrophilic model drug (congo red) was also demonstrated with the same formulation design. Therefore, this strategy serves as a general solution to sustained intravitreal delivery of hydrophilic small molecule drugs.
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Huilin Dong,Xiaoya Sun,Haichao Li,Deqiang Li,Zhe Ling,Sheng Chen,Yanglei Xu,Feng Xu
Exploring high-sensitive and convenient anticounterfeiting as well as food freshness monitoring technologies to combat food safety is urgently needed but remains a great challenge. Herein, the color dynamic response and transparency encryption features of colorimetric label with heteronetwork structure can effectively cope with the above problems. The colorimetric label demonstrates excellent superhydrophobic with water contact angle of 156.2° and roll-off angle of 8.9°, and icephobic that delays the freezing time of 40 μL water droplets from 38 s to 162 s and reduces the bonding strength of ice from 249.00 kPa to 15.20 kPa. Furthermore, the colorimetric label exhibits a colorimetric shift of 126 nm and a detection limit of 0.8 ppm for NH 3 , making it successfully applicable for shrimp freshness monitoring. Notably, a locking encryption system featuring multiple logics can be achieved by combining the colorimetric properties and transparency changes of the colorimetric tags. This work proposes an ingenious, cost-effective, and convenient dual system for anticounterfeiting and food freshness monitoring, which inspired the development of an intelligent monitoring system for food quality, and has significant implications for enhancing food safety.
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CARBOHYDRATE POLYMERS
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2024
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IF 10.7
Jingxi Wang,Kun Li,Yunxue Jia,Tianran Song,Junwei Xu,Xuemei Sun,Meili Liu,Ping Li,Yubo Fan
The single structure, poor mechanical properties, and low biological activity of wound dressings usually lead to unsatisfactory treatment effects. Gelatin and chitosan possess excellent biofunction, but they lack sufficient mechanical support. Magnetic biomaterials and magnetic fields have shown surprising tissue repair potential. Herein, inspired by the skin structure and considering the bioactive composition, a superparamagnetic asymmetric membrane was constructed by incorporating gelatin, chitosan, and magnetic Fe 3 O 4 nanoparticles. The proposed membrane exhibited a high degree of asymmetry, achieving functional diversification. The surface of the top layer was highly hydrophobic as an isolation barrier. The top layer consisted of dense fibrous chitosan with high mechanical strength and excellent antibacterial properties. The bottom layer was composed of gelatin sponge with distributed magnetic nanoparticles, possessing high porosity and swelling ratio to effectively absorb tissue exudates and support cell growth. Furthermore, the membrane demonstrated significant promotion of human dermal fibroblast proliferation under a static magnetic field. In a full-thickness mouse skin wound model, the membrane effectively accelerated wound healing with reduced wound area, abundant collagen disposition, and enhanced vascularization. Therefore, the superparamagnetic gelatin/chitosan asymmetric membrane with a biomimetic structure and function exhibits remarkable superiority and provides a promising approach to effective wound healing.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Wyclif Kiyingi,Jixiang Guo,Ruiying Xiong,Shiling Zhang,Chenhao Gao
Conventional methods for determining Wax Appearance Point (WAP) and wax content in crude oils—such as differential scanning calorimetry (DSC), rheology, and modified acetone precipitation (SY/T 7550–2000)—offer established reliability but face challenges with complexity, sensitivity, and operational ease. This study introduces Back Scattered Light (BSL) analysis method as alternative that is rapid, non-invasive and leverages wax particles’ unique scattering properties. Using BSL, WAPs were accurately measured for six crude oil samples (YM, YD, SHB, XJN, YQ, GD) at temperatures between 16°C and 48°C. The method was validated using samples YD and YM whose results were compared with the coventional methods. The BSL method showed great accuracy, achieving a 1–5 % error margin for WAP. Unlike classical methods, BSL ably identified the two WAPs in YM (47°C and 36.33°C), corresponding to distinct paraffin and microcrystalline wax types that were confirmed with optical microscopy. Wax content estimations of 20.29 % (YD) and 35.12 % (YM) were consistent with DSC and SY/T 7550–2000 within a 5 % margin. Experiments with commercial wax in heptane showed BSL’s sensitivity to both macro- and microcrystalline wax types. The BSL method’s reduced sample requirements, shorter testing times, and ease of operation make it a compelling alternative to traditional approaches, with significant potential for enhancing sustainable wax management in crude oil processing.
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Sining Huang,Sean Xiao-An Zhang,Xueren Qian,Yonghao Ni,Zhibin He,Lan Sheng,Jing Shen
Biomimetics has revolutionized materials innovation by drawing inspiration from biological systems. Cellulosic paper, a sustainable biomaterial, offers immense potential for biomimetic research. Paper-based biomimetic materials, which replicate the structures and functionalities of natural materials by utilizing the cellulosic fiber network as a substrate or skeleton, provide customizable functional properties, thereby enabling advanced applications. Here, we introduce rice-leaf-mimetic paper, inspired by the leaf’s microstructure and biowax-based cuticle. This paper exhibits self-cleaning superhydrophobicity and showcases possibilities for additional functionalities, including antibacterial properties and food preservation, as evidenced in our prior research. We propose its utilization as a substrate for rewritable and biolubricant-infused surfaces. These somehow distinct surfaces draw inspiration from the chemistry and microstructure of the rice leaf. Although incorporating hydrochromic dyes enables rewritability, controlling the retention time of colors remains challenging. The biowaxy structure of the paper prolongs color maintenance by inhibiting water evaporation. Moreover, the hierarchically rough microstructure of rice-leaf-mimetic paper effectively stores biolubricant molecules, reducing friction and enhancing slipperiness. Surface microcavity ratio analysis provides insights into the paper's biolubricant-storability. The surface engineering of rice-leaf-mimetic paper using hydrochromic dyes or biolubricants holds potential for designing novel materials. Unveiling the vast potential of easily scalable papermaking processes alongside biomimetics and surface engineering opens new avenues for materials innovation.
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FOOD CHEMISTRY
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2025
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IF 9.8
Yanping Huang,Zengliu Song,Yang You,Yunqi Li,Tongfei Shi,Jie Xiao
The spatial distribution of fat crystals significantly impacts the stability and digestion properties of emulsions. This study investigated the templating effect of monoglycerides in controlling the spatial distribution of solid fat crystallization within double emulsions. Double emulsions were formulated with glyceryl monostearate (GMS), glyceryl monolaurate (GML), glyceryl monooleate (GMO), beeswax (BW), glyceryl distearate (GDS), and glyceryl tristearate (GTS) in the oil phase. Monoglycerides influenced the spatial distribution pattern of BW crystals, while minimally affecting GDS and GTS. Cooling at 4 °C increased interfacial crystallization without altering distribution patterns. Monoglycerides raised the onset and peak crystallization temperatures and enthalpy in BW emulsions, with GMS showing the most significant effects. Adding GMS slowed nucleation rates and extended induction times, promoting interface crystallization. The templating effect also reduced crystal lamellar thickness, facilitating the transition from β-crystalline to β’ crystalline in BW. These findings provide insights into selecting crystallizing emulsifiers and enhancing double emulsion stability.
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Journal of Cleaner Production
·
2025
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IF 10
Sining Huang,Jiayi Lv,Xue Liu,Hongyang Yuan,Yingying Wang,Siqi Huan,Jing Shen,Chengyu Wang
Beeswax, known for its natural, eco-friendly, and hydrophobic properties, has gained remarkable contributions in food industry, e.g., formulation for food packaging materials. However, challenges including high melting point, sensitivity to temperature changes, and limited fluidity hinder its broader and high-value utilization. Emulsifying beeswax offers a promising approach to address these issues. Herein, TEMPO-oxidized nanocellulose (TOCNF) with superior water dispersibility, along with carboxymethyl chitosan (CMCS) known for its film-forming and bacteriostatic properties, are utilized to stabilize beeswax particles and create an oil-in-water Pickering emulsion (PE). Complex stabilizers are formed by interaction between TOCNF and CMCS, generating protective membrane surrounding the beeswax particles. Such encapsulation prevents particle aggregation, resulting in emulsions stable without delamination even after centrifugation at 5000 rpm for 10 min and storage for over 3 months. The obtained PE is further applied to coat cellulosic paper without the need of adhesives, imparting high hydrophobicity and a certain bacteriostatic property to the paper, demonstrating efficacy in preserving fruits by slowing their decay rate. This PE system offers a sustainable and effective solution for utilizing beeswax, particularly in food packaging applications.
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FOOD AND BIOPRODUCTS PROCESSING
·
2025
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IF 3.4
Bin Li,Mengjing Zhou,Haibo Qin,Aolin Wu,Jiawei Li,Ying Wang,Zhigang Hu
This study aimed to investigate the synergistic effect between gelatin and κ-carrageenan on the structure and properties of bigels. Beeswax was used as the oleogelator, while gelatin and κ-carrageenan served as hydrogelators to prepare oleogels and hydrogels separately. The two gels were subsequently mixed in an ice-water bath to form bigels. By adjusting the ratio of gelatin to κ-carrageenan in the hydrogel phase, the microstructure, freeze–thaw stability, and rheological properties of the resulting bigels were systematically characterized. The results revealed that increasing gelatin content led to a reduction in interfacial tension within the aqueous phase, resulting in finer oil droplet dispersion and a more homogeneous and compact microstructure. The synergistic interaction between gelatin and κ-carrageenan enhanced the stability of the hydrogel network and improved its oil encapsulation capacity, thereby significantly improving the freeze–thaw stability of the bigels. Rheological analysis showed that an appropriate proportion of gelatin notably increased the storage modulus of the bigels, indicating a more robust internal structure. This study provides a novel strategy for the development of high-performance structured lipids for food applications.
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Advanced Sustainable Systems
·
2025
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IF 6.1
Qian Li,Ziyan Li,Yang You,Yunqi Li,Yuan Liu,Hui Zhao,Tianhang Huang,Bing Hu
Approximately one-third of the food produced globally is not consumed; meanwhile, world hunger is still a rising issue. This puzzling situation is mainly attributed to the postharvest spoilage of fruits and vegetables, and transpiration plays an important role in this process. The use of plastic film packaging is an effective and convenient means to prevent transpiration. However, the overuse of plastics has resulted in serious environmental pollution and a microplastic crisis. In this study, edible bioplastic films based on soybean protein isolate (SPI), carrageenan (CA), glycerol and beeswax (BW) are successfully developed, and these films are comparable to polyethylene (PE) plastic films in terms of preventing the evaporation of water and the degradation of bioactive components in leafy vegetables and fruits. The addition of BW is found to weaken the intermolecular interactions between the protein and polysaccharides, leading to a more homogeneous microstructure. The presence of fatty alcohols and alkanes in BW significantly improves the hydrophobic properties of the edible films, facilitating both low water vapor permeability and solubility.
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BIORESOURCE TECHNOLOGY
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2025
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IF 9
Hongsheng Dong,Fangzheng Zhou,Chengyi Lu,Pengfei Lv,Junlin Chen,Yongchen Song
The development of shape-stabilized phase change materials (PCMs) for solar-thermal energy storage faces a trade-off: while conventional petroleum or mineral-derived systems achieve high energy density, they raise concerns about resource depletion and environmental impact. Here, we address this challenge by applying a circular economy approach, transforming waste coffee grounds and beeswax (BW) into a fully bio-based composite PCM that combines sustainable attributes with performance characteristics relevant for practical applications. A hierarchically porous carbon aerogel, prepared by carbonization of coffee waste, serves as a structural support for vacuum-impregnated BW and demonstrates a PCM loading capacity of 78.8 %. The composite exhibits a phase change enthalpy of 135.3 J/g at 48.7°C and maintains 98.2 % of its capacity after 500 thermal cycles. Under thermal stress conditions (70°C, 4 h), the material shows no detectable leakage. Additionally, the biochar framework enables dual functionality: efficient solar absorption and heat storage, yielding an 89.0 % solar-thermal conversion efficiency under a light intensity of 100 mW/cm 2 . The real-time temperature profile shows that phase transition aligns with variations in solar input, as evidenced by a stable 48°C plateau during energy storage. By marrying waste valorization with leak-proof thermal storage, this work establishes a promising and scalable approach for developing next-generation bio-based energy materials. The coffee ground-derived composites combine renewable feedstock, straightforward preparation, and long-term cyclic durability, suggesting their potential as candidate materials for solar thermal harvesting and storage applications.
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