期刊：
International Journal of Biological Macromolecules,2024年260(Pt 1):129329 ISSN：0141-8130
作者机构：
[Cai, Jie; Yang, Zhaoxing; Zhang, Die] School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China;[Cai, Jie] Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China. Electronic address: caijievip@whpu.edu.cn
关键词：
Food packaging;Starch;Tannic acid
摘要：
Developing efficient and biodegradable packaging films is of paramount significance owing to the scarcity of petroleum based resources. However, their applications in food packaging are limited due to their poor mechanical properties and inadequate biological activities. This study proposes a novel approach to develop the starch composite nanofibrous films (SNFs/TA/Fe(3+)) consisting of starch, tannic acid, and Fe(3+) using the temperature-assisted electrospinning method. The addition of TA resulted in a decrease in the rate of thermal degradation, indicating an improvement in the thermal stability of SNFs. However, the incorporation of TA or TA/Fe(3+) showed only a slight impact on the internal structure of SNFs. SNFs/TA/Fe(3+) loaded with 0.1wt% of Fe(3+) demonstrated a significantly higher tensile strength compared to SNFs and those loaded with TA alone. The presence of TA enhances the antioxidant activity of SNFs, and the robust SNFs/TA/Fe(3+) exhibited comparable antioxidant activity to SNFs/TA. However, the SNFs/TA/Fe(3+) showed a reduction in antibacterial activity, possibly due to the high valence state of the metal ions. Overall, these findings highlighted that a simple electrospinning method was used to produce SNFs/TA/Fe(3+) resulted in improved mechanical properties and antioxidant activity, offering a new strategy for the development of active food packaging using SNFs.
作者机构：
[Yuxiao Weng; Haifeng Wang] P&O Biotechnology (Hubei) Co., Ltd., Wuhan 436043, China;[Mingkang Liu; Ziyi Dai; Ziyun Zhao; Deying Ma; Luyang Li] Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan 430023, China;Author to whom correspondence should be addressed.;China Animal Husbandry Industry Co., Ltd., Beijing 100071, China;These authors contributed equally to this work.
通讯机构：
[Xiao Xu] H;Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan 430023, China<&wdkj&>Author to whom correspondence should be addressed.
关键词：
protein hydrolysate;black soldier fly larvae;schizochytrium;palatability;antioxidant;diarrhea;dogs
摘要：
Protein hydrolysate from black soldier fly larvae (BSFP) has garnered great attention with its lower allergenicity, high amount of essential amino acids, and small bioactive peptides. Schizochytrium is a promising alternative source of n-3 FUFA because it has enriched docosahexaenoic acid (DHA, C22: 6). The aim of this study was to assess palatability, the presence of diarrhea, plasma biochemistry panels, anti-oxidative and anti-inflammatory effects, and immune function in beagle dogs when supplementing a mixture of protein hydrolysate from black soldier fly larvae and schizochytrium (BSFPs) into their diets. Experiment I: 24 young beagle dogs (16 males and 8 females; 4–5 months; BW: 6.40 ± 0.15 kg) were randomly divided into four groups: (1) control (CON), (2) 5% BSFPs, (3) 10% BSFPs, (4) 15% BSFPs. Their body weights and fecal scores were recorded, and blood samples were collected for analysis. Experiment II: three diets containing 5%, 10%, and 15% BSFPs were evaluated by comparing them with a basal diet (CON) to evaluate palatability. These results suggested that a lower presence of diarrhea existed in the BSFP diet than the CON diet (p < 0.05). Three treatment groups remarkably increased their total protein (TP) and albumin (ALB) contents and decreased their concentrations of triglyceride (TG) and total cholesterol (TC) in plasma (p < 0.05). Moreover, the 5% and 15% BSFPs groups had a higher calcium (CA) content in plasma, and the activities of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) and contents of creatinine (CREA) and urea nitrogen (BUN) were significantly reduced by supplementing BSFP in their diets (p < 0.05). Their anti-oxidative enzyme activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-PX) were dramatically enhanced, and their malondialdehyde (MDA) concentrations were remarkably reduced (p < 0.05). Immunoglobulin A and G (IgA and IgG) concentrations in the plasma in the 10% and 15% BSFPs groups were significantly increased (p < 0.05). Furthermore, lower interleukin-8 (IL-8) contents were shown in the BSFP diets than the CON diet (p < 0.05). Similarly, the diets supplemented with BSFPs exhibited a positive effect on palatability (p < 0.05). To sum up, the diets supplemented with BSFPs significantly enhanced palatability, immune function, and anti-oxidative and anti-inflammatory capacity to alleviate diarrhea and improve the general health of the beagle dogs.
期刊：
FRONTIERS IN NUTRITION,2024年11:1334809 ISSN：2296-861X
作者机构：
College of Food Science and Engineering, Wuhan Polytechnic University, China;Key Laboratory for Deep Processing of Major Grain and Oil (Wuhan Polytechnic University), Ministry of Education, China;School of Liquor and Food Engineering, Guizhou University, China
摘要：
The planting area of high-quality indica rice varieties has been growing rapidly in China. However, the storage characteristics of these varieties remains unclear. In this research, different moisture contents (13.5, 14.5, and 15.5%) of high-quality rice (variety Xiadao No.1) were stored at different temperatures (15, 20, 25, and 30°C) for 360 d, and then evaluated for lipid metabolism, redox enzyme activities, fatty acid composition, and sensory attributes. With the prolongation of storage, rice displayed an upward trend in fatty acid value, malondialdehyde content, and cooked rice hardness and a downward trend in contents of total fat and non-starch lipid, peroxidase and catalase activities, and sensory score of cooked rice. The change trends of these quality parameters were aggravated by elevating storage temperature and moisture content. Linoleic acid content of rice generally decreased with prolonged storage. After 300 d of storage, rice with initial moisture content of 13.5% at 30°C showed a fatty acid value of higher than 30 mg KOH/100 g, while rice of other two initial moisture contents reached similar level at 25°C. After the whole storage period, only rice with initial moisture contents of 13.5 and 14.5% stored at 15°C had a sensory score of higher than 60. These results suggested that the aging process of high-quality rice can be inhibited by decreasing the storage temperature and initial moisture content. These results can provide reference for grain storage enterprises to select proper storage condition to store high-quality rice.
摘要：
Freeze-thaw cycles (FTC) could cause damage to food during storage. The effects of different FTC on Hot-dry noodles (HDN) in terms of quality, moisture, starch, and protein characteristics were studied. This study showed that FTC decreased the texture properties and water absorption of HDN. Meanwhile, cooking loss was significantly increased after FTC. The water content of HDN was decreased and water migration was increased during FTC. In addition, results showed that FTC destroyed the order structure and increased the crystallinity of starch in HDN. Under FTC, the disulfide bond of HDN was broken, the free sulfhydryl group was increased, and the electrophoretic patterns confirmed the protein depolymerization. The microstructure also showed that the gluten network became incomplete and starch was exposed outside the substrate. This study expounded the mechanism of HDN quality deterioration during FTC, which laid a foundation for the development and improvement of frozen and freeze-thaw noodles.
摘要：
Ochratoxin A (OTA) poses a great threat to human health, and its rapid detection has drawn wide concerns in agri-food product risk assessment. Herein, on the basis of the aptamer-enhanced peroxidase-mimetic property of two-dimensional few-layer tungsten diselenide (WSe2) nanosheets, a simple label-free colorimetric aptasensor is presented for OTA detection. The enzymatic mimic property of the WSe2 nanosheets could be enhanced through aptamer adsorption because of the enhanced affinity of WSe2 nanosheets to 3,3 ',5,5 '-tetramethylbenzidine. A good linear relationship was obtained in the range from 0.5 to 50 ng/mL, and the limit of detection for OTA was 0.16 ng/mL. The performance of this strategy was comparable to previous strategies for OTA determination. Further, this colorimetric aptasensor displayed satisfying specificity and stability in a complex food matrix including both red wine and wheat flour samples. Hence, the results of this study suggest potential applications of the aptasensor to detect mycotoxins in different agri-food products.
摘要：
Selective laser melting (SLM) additive manufacturing technology with different oxygen contents leads to the appearance of spherical solids of different sizes on the surface of the part, which affects the mechanical properties of the part, surface roughness, etc. In this study, the SLM molding technique was applied using three different 316L metal powders with different oxygen contents. The spheroidization properties and morphology of the samples were observed using a Quanta 200 environmental scanning electron microscope (ESEM), and the samples were observed microscopically and subjected to EDX spectroscopy using metallographic microscopy, and the mechanical properties were investigated. The results of the study showed that when using gas atomized powders, no spheroidization occurred when the oxygen content of the powders was 5.44 +/- 0.01% in all cases, whereas using water atomized powders produced spherical structures with larger dimensions. This observation was closely related to the shape and particle size of the powder. When 316L metal powder with an oxygen content of 4.52 +/- 0.01% was used for molding, small spherical structures appeared on the surface of the samples. When metal powder with an oxygen content of 5.44 +/- 0.01% was used for the molding, larger spherical structures appeared on the surface of the samples. When the powder with an oxygen content of 5.90 +/- 0.01% was used for the molding, more small spherical structures and some large spherical structures appeared on the surface of the samples. This suggests that higher oxygen levels may inhibit the occurrence of spheroidization. EDX spectroscopic analysis revealed that the white matter on the surface of the samples without spheroidization was mainly composed of Fe and Cr, whereas the white matter on the surface of the large-sized spherical structures was mainly composed of Si and Mn, which may be related to the oxygenophilicity of the various substances. Selective laser melting (SLM) additive manufacturing technology with different oxygen contents leads to the appearance of spherical solids of different sizes on the surface of the part, which affects the mechanical properties of the part, surface roughness, etc.
期刊：
Journal of Vibration and Control,2024年 ISSN：1077-5463
通讯作者：
Dai, LM
作者机构：
[Dai, Liming; Foroutan, Kamran] Wuhan Polytech Univ, Sino Canada Nonlinear Sci & Complex Syst Ctr, Wuhan, Peoples R China.;[Dai, Liming; Foroutan, Kamran] Univ Regina, Ind Syst Engn, 3737 Pkwy, Regina, SK S4S 0A2, Canada.
通讯机构：
[Dai, LM ] U;Univ Regina, Ind Syst Engn, 3737 Pkwy, Regina, SK S4S 0A2, Canada.
关键词：
FG cylindrical panels;spiral stiffeners;variable thickness;sub-harmonic and super-harmonic resonances;nonlinear elastic foundation;improved Donnell shell theory;method of multiple scales
摘要：
This research devotes to study the behaviors of sub- and super-harmonic resonances of spiral stiffened functionally graded (SSFG) variable thickness cylindrical panels (VTCP) exposed to external loading. The panel considered is rested on a nonlinear elastic foundation (NEF), which is composed of two linear foundations namely Pasternak and Winkler foundations, and a nonlinear foundation with cubic stiffness. The cylindrical panels of variable thickness are reinforced with internal spiral stiffeners. Both the cylindrical panels and spiral stiffeners are considered to be continuously graded along their thickness direction. To model the spiral stiffeners, the smeared stiffeners technique is utilized, and for deriving the discretized nonlinear governing equation of the SSFG-VTCP, the improved Donnell shell theory, von-Karman equation, and Galerkin's method are applied. In continuing, to examine the sub- and super-harmonic resonances, the method of multiple scales is implemented. Also, to validate the present results, in addition to comparing the present results with that of the previous research, the response of super-harmonic resonance, which is obtained theoretically, is compared with the 4th-order P-T method.
期刊：
Ecotoxicology and Environmental Safety,2024年273:116179 ISSN：0147-6513
作者机构：
[Ding, Jiuyang; Sun, Baofei] Key Laboratory of Human Brain bank for Functions and Diseases of Department of Education of Guizhou Province, Guizhou Medical University,Guiyang 550025,China;[Ding, Jiuyang] Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang 550004, China;[Ding, Jiuyang] School of Forensic Medicine, Guizhou Medical University,Guiyang 550004,China;[Zheng, Juan; Gao, Yingdong] Department of Reproductive Medicine, Taian Maternity and Child Health Hospital, Taian 271000, China;[Liu, Changyou] Department of Pediatrics, Taian Maternity and Child Health Hospital, Taian 271000, China
关键词：
Blood brain barrier;Chromium;Hypothalamus
摘要：
It has been shown that exposure to hexavalent Chromium, Cr (Ⅵ), via nasal cavity can have neurotoxicological effects and induces behavioral impairment due to the fact that blood brain barrier (BBB) does not cover olfactory bulb. But whether Cr (Ⅵ) can cross the BBB and have a toxicological effects in central nervous system (CNS) remains unclear. Therefore, we investigated the effects of Cr (Ⅵ) on mice treated with different concentrations and exposure time (14 days and 28 days) of Cr (Ⅵ) via intraperitoneal injection. Results revealed that Cr accumulated in hypothalamus (HY) in a timely dependent manner. Much more severer neuropathologies was observed in the group of mice exposed to Cr (Ⅵ) for 28 days than that for 14 days. Gliosis, neuronal morphological abnormalities, synaptic degeneration, BBB disruption and neuronal number loss were observed in HY. In terms of mechanism, the Nrf2 related antioxidant stress signaling dysfunction and activated NF-κB related inflammatory pathway were observed in HY of Cr (Ⅵ) intoxication mice. And these neuropathologies and signaling defects appeared in a timely dependent manner. Taking together, we proved that Cr (Ⅵ) can enter HY due to weaker BBB in HY and HY is the most vulnerable CNS region to Cr (Ⅵ) exposure. The concentration of Cr in HY increased along with time. The accumulated Cr in HY can cause BBB disruption, neuronal morphological abnormalities, synaptic degeneration and gliosis through Nrf2 and NF-κB signaling pathway. This finding improves our understanding of the neurological dysfunctions observed in individuals who have occupational exposure to Cr (Ⅵ), and provided potential therapeutic targets to treat neurotoxicological pathologies induced by Cr (Ⅵ).
作者机构：
[Hu, Xiaosong; Li, Daotong; Ma, Chen] College of Food Science and Nutritional Engineering, National Engineering Research Centre for Fruits and Vegetables Processing, Beijing Key Laboratory for Food Non-Thermal Processing, China Agricultural University, Beijing 100083, China;National R&D Center for Se-Rich Agricultural Products Processing, Hubei Engineering Research Center for Deep Processing of Green Se-Rich Agricultural Products, School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China;Author to whom correspondence should be addressed.;[Chen, Fang] College of Food Science and Nutritional Engineering, National Engineering Research Centre for Fruits and Vegetables Processing, Beijing Key Laboratory for Food Non-Thermal Processing, China Agricultural University, Beijing 100083, China<&wdkj&>Author to whom correspondence should be addressed.;[Wang, Xuehua] College of Food Science and Nutritional Engineering, National Engineering Research Centre for Fruits and Vegetables Processing, Beijing Key Laboratory for Food Non-Thermal Processing, China Agricultural University, Beijing 100083, China<&wdkj&>National R&D Center for Se-Rich Agricultural Products Processing, Hubei Engineering Research Center for Deep Processing of Green Se-Rich Agricultural Products, School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China
通讯机构：
[Fang Chen] C;College of Food Science and Nutritional Engineering, National Engineering Research Centre for Fruits and Vegetables Processing, Beijing Key Laboratory for Food Non-Thermal Processing, China Agricultural University, Beijing 100083, China<&wdkj&>Author to whom correspondence should be addressed.
关键词：
SCFAs;gut microbiota;high hydrostatic pressure;metabolic profiles;tomato juice
摘要：
High hydrostatic pressure (HHP) is a non-thermal pasteurization technology for the enhancement of food products' safety and quality. The components of tomato juice can be affected by HHP processing. Little is known about the effects of HHP-processed tomato juice on the gut microbiome and metabolism. Here, we performed high-throughput sequencing and metabolomics profiling to determine the critical differences in gut microbiota structure and metabolic profiles in mice administered with HHP-processed tomato juice. Tomato juice administration significantly increased the gut bacterial alpha diversity and the relative abundance of Bacteroides. The mice administered with HHP-processed tomato juice were characterized by the enrichment of Bacteroidetes, Alistieps, and Faecalibaculum compared with those administered with HTST-processed tomato juice. Moreover, HHP-processed tomato juice promoted SCFA levels, which were positively correlated with the enriched Alistieps. Our results show that HHP-processed tomato juice may drive healthy gut microbes and metabolites.
摘要：
Due to the powerful DNA loading capacity and excellent proton sponge effect, the cationic polymer polyethyleneimine (PEI) has been demonstrated as a versatile, efficient DNA delivery tool both in vitro and in vivo. However, the excess surface positive charge of PEI and the common capture/clearance of PEI/DNA complex by the immune system limit its further clinical applications. To reduce the cytotoxicity resulting from surface charge and avoid the clearance of nanoparticles interacting with proteins and circulating immune cells in the blood, a bionic gene delivery system was developed by coating PEI/DNA complexes with natural cell membranes. The obtained RAW Cell membrane-coated PEI/DNA capsules (RAWm-PDc) and Red blood Cell membrane-coated PEI/DNA capsules (RBCm-PDc) complex showed excellent dispersibility and stability with an average particle size of 200-300 nm. Moreover, the RAWm-PDc/RBCm-PDc complex had great DNA loading capacity and protected the bound DNA effectively from nuclease hydrolysis. Most importantly, the RAWm-PDc/RBCm-PDc complex exhibited low protein adsorption, reduced cytotoxicity and high gene delivery efficiency. All the results demonstrated the potential of RAWm-PDc/RBCm-PDc as a promising non-viral gene delivery vector.
摘要：
Granite waste powder (GWP) is a solid waste produced during stone processing, and its accumulation has brought serious environmental and ecological problems. Due to its rich Si and Al components, GWP is a potential raw material for the preparation of geopolymers, but its low reactivity limits its utilization. This study aimed to enhance the reactivity of GWP toward geopolymer preparation by mechanical activation. During mechanical activation, the particle size of GWP decreased rapidly, and its internal pore volume gradually increased, which made its specific surface area continuously increase. The relative crystallinity of the main mineral phases in GWP decreases continuously with mechanical activation, and the aluminosilicate minerals (including albite, microcline, and biotite) are more easily amorphized than quartz. Leaching tests show that activated GWP can dissolve higher percentages of silicon and aluminum components in alkaline solutions. After 120 min of activation, the dissolution percentage of Si increased from 1.55% to 6.25%, and that of Al increased from 4.83% to 20.86%. The reaction heat result shows that the early geopolymerization involving activated GWP releases higher cumulative heat, which reflects a higher degree of reaction. Also, geopolymer incorporated with activated GWP, its compressive strength increased from 50.83 MPa to 78.94 MPa, and its flexural strength increased from 7.2 MPa to 10.0 MPa. These results confirmed that the reactivity of GWP can be significantly enhanced by mechanical activation. This technology may provide an efficient and promising method to improve the reactivity of GWP and promote its utilization in the preparation of geopolymers.
期刊：
Journal of Hazardous Materials,2024年465:133198 ISSN：0304-3894
通讯作者：
Lan, JR
作者机构：
[Pan, Cong; Lan, Jirong; Hou, Haobo] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.;[Lan, Jirong; Sun, Yan; Kai, Ming-Feng] Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong, Peoples R China.;[Dong, Yiqie] Wuhan Polytech Univ, Sch Civil Engn & Architecture, Wuhan 430023, Peoples R China.
通讯机构：
[Lan, JR ] W;Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.
关键词：
Amorphous structure;CSWR/PMS system;Carbamazepine;Copper tailing;High value application
摘要：
It is a green and sustainable path to establish cheap solid waste-based catalyst to establish peroxymonosulfate (PMS) catalytic system for the degradation of carbamazepine (CBZ) in water. In this study, durable copper tailing waste residue-based catalyst (CSWR) was prepared, and efficient CSWR/PMS system was constructed for catalytic degradation of CBZ for first time. The morphology and structure of CSWR changed from clumps to porous and loose amorphous by alkali leaching and medium temperature calcination. The reconstructed surface of the CSWR exposes more active sites promotes the catalytic reaction and increases the degradation rate of CBZ by more than 39.8 times. And the CSWR/PMS achieved a CBZ removal of nearly 99.99 % in 20min. In particular, perovskite-type iron-calcium compounds were formed, which stimulated the production of more HO(•) and SO(4)(•-) in the system. DFT calculation shows that CSWR has stronger adsorption energy and electron transfer ability to PMS molecules, which improved the degradation efficiency of the system. In general, this study proposed a means of high-value waste utilization, which provided a new idea for the preparation of solid waste based environmental functional materials and is expected to be widely used in practical wastewater treatment.
期刊：
Journal of Functional Analysis,2024年286(7):110316 ISSN：0022-1236
作者机构：
[Chuntai Liu] School of Mathematics and Computer Science, Wuhan Polytechnic University, Wuhan 430023, PR China
摘要：
The author of this paper and coauthors in 2022 studied a family of self-affine tiles in Rd with noncollinear digit sets, and gave a sufficient and necessary condition for such tiles to be tame balls. We in this paper mainly present a simpler proof of such equivalent condition. We replace quadric surfaces by some zigzag planes, and redefine the quasi-invariant plane which plays a key role in the construction of the desired homeomorphism. This adjustment greatly simplifies the proof.
期刊：
International Journal of Biological Macromolecules,2024年261(Pt 2):129761 ISSN：0141-8130
通讯作者：
Qingtao Liu
作者机构：
[Zhou, Yu] Key Laboratory of Coal Conversion and New Carbon Materials of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, Hubei 430081, PR China;Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, PR China;[Liu, Xiyu] The Ninth Hospital of Wuhan City, Wuhan, Hubei 430081, PR China;[Liu, Qingtao] National Local Joint Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University, Wuhan, Hubei 430200, PR China;School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, PR China
通讯机构：
[Qingtao Liu] N;National Local Joint Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University, Wuhan, Hubei 430200, PR China
摘要：
The weak immunity of tumors after chemotherapy could cause tumor metastasis and progression. Therefore, to overcome the dilemma of obvious immune deficiency caused by chemotherapy, a nanosystem (N-IL-12/DOX/α-TOS) consisted of thioketal (TK) bonds linked-hollow mesoporous silica nanoparticles (HMSNs) coated with carboxymethyl chitin (CMCH) by electrostatic interaction, and surface-functionalized glucose-regulated protein 78 binding peptide was prepared for loading doxorubicin (DOX), IL-12 and α-tocopheryl succinate (α-TOS). N-IL-12/DOX/α-TOS displayed a mean size of 275nm after encapsulated DOX, IL-12 and α-TOS with loading contents of 2.04×10(-4), 4.01×10(-2) and 7.12×10(-2), respectively. The drug-free nanoparticles (NPs) showed good biocompatibility to both 4T1 cells and RAW264.7 macrophages. N-IL-12/DOX/α-TOS could achieve localized release of IL-12, DOX and α-TOS by pH and H(2)O(2) trigger in the tumor microenvironment (TME). Moreover, the combined therapy by N-IL-12/DOX/α-TOS remarkably elevated the anti-tumor therapeutic efficacy, enhanced immune responses via promoting tumor-associated macrophage (TAM) polarization into tumoricidal M1 phenotypes, and decreased lung metastasis with reduced side effects. N-IL-12/DOX/α-TOS exhibited as a promising strategy for combining chemotherapy and local macrophage modulation-immunotherapy for anti-tumor therapy.
关键词：
Air-/oil–water interfaces;Co-extraction;Emulsion/foam;Natural nanoparticle;Plant protein
摘要：
Enrichment of plant proteins with functionality is of great importance for expanding their application in food formulations. This study proposed an innovation to co-enrich soy protein and flaxseed protein to act as efficient interfacial stabilizers for generating foams and emulsions. The structure, interfacial properties, and functionalities of the soy protein-flaxseed protein natural nanoparticles (SFNPs) obtained by alkali extraction-isoelectric precipitation (AE) and salt extraction-dialysis (SE) methods were investigated. Overall, the foamability of AE-SFNPs (194.67%) was 1.45-fold that of SE-SFNPs, due to their more flexible structure, smaller particle size, and suitable surface wettability, promoting diffusion and adsorption at the air-water interface. AE-SFNPs showed higher emulsion stability (140.89min), probably because the adsorbed AE-SFNPs with smaller size displayed soft particle-like properties and stronger interfacial flexibility, and therefore could densely and evenly arrange at the interface, facilitating the formation of a stiff and solid-like interfacial layer, beneficial for more stable emulsion formation. The findings may innovatively expand the applications of SFNPs as food ingredients.
通讯机构：
[Wu, Q; Wang, C ] H;Hubei Univ Technol, Coll Bioengn & Food, Wuhan 430068, Peoples R China.
关键词：
Feruloylated arabinoxylan;Pea starch;Processing and digestibility properties
摘要：
In this study, arabinoxylans (AX) with various molecular weights (Mw) and bound ferulic acid (FA) contents were prepared to compare their effects on the gelatinization, short-term retrogradation and digestive properties of pea starch (PeS). The results indicated that all AX samples could obviously impede the pasting process of PeS and inhibit the short-term retrogradation of PeS-based gels during refrigeration by hindering the rearrangement and double helical associations of amylose. More precisely, AXs with low Mw and the highest FA content (H-FAX) exhibited the strongest intervention ability on PeS compared with the other samples. According to the Fourier transform infrared spectroscopy and X-ray diffraction results, it might be due to the unique role of bound FA as a noncovalent cross-linking agent, which enhanced the association between AX and starch molecules through extra hydrogen bonding interactions and entanglement behaviour. On these bases, H-FAX clearly improved the hardness, chewiness, moisture content, and sensory acceptance of PeS-base gels (pea jelly), and could also regulate its starch composition during short-term refrigeration to delay starch digestion. Overall, AXs with appropriate structural features might obviously improve the quality and storage stability of PeS-based foods.
通讯机构：
[Sun, LB ] N;[Yan, JT ] W;Nanjing Tech Univ, Coll Chem Engn, Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, State Key Lab Mat Oriented Chem Engn, Nanjing 211816, Peoples R China.;Wuhan Polytech Univ, Coll Chem & Environm Engn, Wuhan 430023, Peoples R China.
摘要：
Solid base catalysts are widely used in the chemical industry owing to their advantages of environmental friendliness and easy separation. However, their application is limited by basic site aggregation and poor stability. In this study, we report the preparation of magnesium (Mg) single-atom catalysts with high activity and stability by a sublimation-trapping strategy. The Mg net was sublimated as Mg vapor at 620 °C, subsequently transported through argon, and finally trapped on the defects of nitrogen-doped carbon derived from metal-organic framework ZIF-8, producing Mg(1)/NC. Because of the atomically dispersed Mg sites, the obtained Mg(1)/NC exhibits high catalytic activity and stability for Knoevenagel condensation of benzaldehyde with malononitrile, which is a typical base-catalyzed reaction. The Mg(1)/NC catalyst achieves a high efficiency with a turnover frequency of 49.6 h(-1), which is much better than that of the traditional counterpart MgO/NC (7.7 h(-1)). In particular, the activity of Mg(1)/NC shows no decrease after five catalytic cycles, while that of MgO/NC declines due to the instability of basic sites.
