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Glycation of whey protein isolate and stachyose modulates their in vitro digestibility: Promising prebiotics as functional ingredients

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Food Bioscience 2023年第2期52卷 298-308页

作者： Guang-yao Zhang Cong Sun Jing-ru Song Wei-yi Jin Yue Tang da-yong zhou Liang Song School of Food Science and Technology Dalian Polytechnic UniversityNo.1 QinggongyuanGanjingzi DistrictDalian116034PR China National Engineering Research Center of Seafood No.1 QinggongyuanGanjingzi DistrictDalian116034PR China

Glycated conjugates have recently been designed to be targeted to probiotic in the ***,the underlying mechanisms of regulating the prebiotic properties and digestibility of conjugates through glycation have not been fully *** this study,WPI-stachyose conjugates were prepared through Maillard reaction and proposed as functional ingredients with prebiotic *** effect of glycation on the in vitro simulated gastrointestinal fate of WPI-stachyose conjugate was further *** results showed that the glycated conjugates of stachyose covalently bound to whey protein exhibited a characteristic cross-linked structure,which enhanced their inhibition ofα-amylase activity and retardation of glucose ***,simulated digestion analysis demonstrated that stachyose-conjugated WPI was more resistant to pepsin and trypsin digestion than unconjugated *** with native WPI,the protein digestibility and degree of hydrolysis of WPI-stachyose conjugates were reduced by 12.5%±0.66%and 5.30%±1.02%,*** addition,rat intestinal extracts were used to detect the in vitro digestibility of *** hydrolysis rate of stachyose in the glycated conjugates was 70%lower than that of ***,the resulting WPI-stachyose conjugate may be used as functional ingredients to achieve the sustained-release effect in the gastrointestinal *** findings demonstrate the possibility of modulating proteins and carbohydrates digestibility through glycation,and have implications for the design and manufacture of potential prebiotic molecules with controlled digestibility in food and related healthcare fields.

关键词： Whey protein isolate Stachyose Maillard reaction Digestibility Glycated conjugates

Development of an Antarctic krill oil based self-microemulsion drug delivery system and its enhancement of bioaccessibility for curcumin

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Food Bioscience 2023年第3期53卷 2330-2339页

作者： Dong-wen Fu Ye Tian Zi-han Wang Jin-zhe Li da-yong zhou Bei-wei Zhu Liang Song School of Food Science and Technology Dalian Polytechnic UniversityNo.1 QinggongyuanGanjingzi DistrictDalian116034PR China National Engineering Research Center of Seafood No.1 QinggongyuanGanjingzi DistrictDalian116034PR China State Key Laboratory of Marine Food Processing and Safety Control Dalian116034PR China

Self-microemulsion drug delivery systems(SMEDDS)have great potential for use in food applications,but their adoption has been limited due to the high proportion of non-edible *** address this limitation,we developed a novel surfactant-free SMEDDS by utilizing phospholipids(40.4%)and triglycerides(54.7%)from Antarctic krill oil(KO)as the intrinsic surfactant and oil phase,respectively,and incorporating glycerol as an edible *** formation mechanism of the KO-based SMEDDS and their potential to deliver curcumin were *** results demonstrated that glycerol facilitated the formation of organogels by the phos-pholipids in krill oil,and homogenization effectively disrupted the organogels to form *** resulting microemulsion was stable under various conditions and significantly improved the bioaccessibility of curcumin in vitro,increasing it by 13.96-fold compared to curcumin *** approach of using marine lipid-based SMEDDS provides insights into their formation and expands their application in foods that contain hydropho-bic active *** sustainable and potentially healthier option offers a promising solution for enhancing the bioavailability of active ingredients in food applications.

关键词： Phospholipid reverse micelle Organogels Self-microemulsifying drug delivery systems Microemulsion Curcumin Bioaccessibility

Effect of air frying and baking on physicochemical properties and digestive properties of scallop (Patinopecten yessoensis) adductor muscle

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Food Bioscience 2023年第2期52卷 901-911页

作者： Zi-Ye Wang Zi-Xuan Wu Guan-Hua Zhao De-Yang Li Yu-Xin Liu Lei Qin Peng-Fei Jiang da-yong zhou School of Food Science and Technology Dalian Polytechnic UniversityDalian116034PR China National Engineering Research Center of Seafood Dalian116034PR China Collaborative Innovation Center of Seafood Deep Processing Dalian Polytechnic University116034PR China

In this study,the effects of dry heat treatments including air frying and baking on the physicochemical and digestive properties of proteins in scallop adductor muscle(SAM)were *** heat treatments,the proteins in SAM exhibited different degrees of oxidation,aggregation and *** both heat treatments,the increase of carbonyl and dityrosine contents and the decrease of free sulfhydryl groups and surface hydrophobicity of proteins in SAM were observed along with increasing heat ***,with increasing heat temperature,there was a progressive transition fromα-helix toβ-sheet in protein secondary ***,the protein solubility first increased and then decreased with increasing *** which,the solubility of 160℃-treated samples was the highest,which were 21.02%and 20.32%for air frying and *** protein digestive properties which reflected by the degree of hydrolysis(DH),soluble amino groups and soluble peptides showed a trend of increasing first and then decreasing with increasing *** gastrointestinal digestion,the DH,soluble amino groups and soluble peptides of 160℃-treated SAMs cooking by air frying were 69.96%,61.14%and 39.33%,respectively,which were significantly higher than all other samples including the fresh *** analysis showed that the protein digestive indexes were positively correlated with solubility,free sulfhydryl content and surface hydrophobicity,and negatively correlated with protein carbonyl content,dityrosine content and protein aggregation *** results provide evidence for knowing more about the effects of dry heat treatments on physicochemical and digestive properties of aquatic muscle food.

关键词： Heat treatment Solubility Protein oxidation Aggregation Degradation In vitro digestion

Advancing gravitational theory through the tetrahedral constellation gravitational wave observatory

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Science China(Physics,Mechanics & Astronomy) 2025年第2期68卷 197-198页

作者： Yun-yong Wang zhou-Jian Cao Institute for Frontiers in Astronomy and Astrophysics Beijing Normal UniversityBeijing102206China

The Tetrahedral Constellation Gravitational Wave Observatory(TEGO)[1]represents a significant leap forward in gravitational wave detection,advancing our understanding of gravitational *** introducing a fourth spacecraft to form a tetrahedral configuration,TEGO enhances traditional triangular setups,enabling the simultaneous sensitivity to all six gravitational wave polarization modes,including those not predicted by general relativity.

关键词： wave polarization theory

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dative B–N bonds weaven toward two-dimensional purely organic materials for single crystals

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Science China Chemistry 2025年第1期68卷 12-14页

作者： Wei-Lei zhou Siwei Wang yong Chen College of Chemistry and Materials Science Inner Mongolia Key Laboratory of Chemistry for Nature Products and Synthesis for Functional MoleculesInnovation Team of Optical Functional Molecular DevicesInner Mongolia Minzu UniversityTongliao 028000China College of Chemistry Nankai UniversityTianjin 300071China

Molecular topology is one of the important topics to study and understand the relationship between molecular structure and properties^([1]).Particularly,two-dimensional(2D)materials with extremely high surface area and ultra-thin morphology have attracted considerable attention due to their unexpected properties in materials and chemistry^([2,3]).

关键词： bonds purely dimensional

Phase transformation of two-dimensional nanomaterials: state-of-the-art progress in designing strategies and catalytic applications

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Science China Materials 2025年第1期68卷 65-85页

作者： Zeqi Wu Feng Niu da Chen Yuexiang Huang Guigao Liu yong zhou Wenguang Tu Xi Zhu Zhigang Zou College of Materials and Chemistry China Jiliang UniversityHangzhou 310018China School of Science and Engineering The Chinese University of Hong Kong(Shenzhen)Shenzhen 518172China National Special Superfine Powder Engineering Research Center School of Chemistry and Chemical EngineeringNanjing University of Science and TechnologyNanjing 210094China Jiangsu Key Laboratory for Nano Technology National Laboratory of Solid State MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresSchool of PhysicsNanjing UniversityNanjing 210093China

Phase transformation of two-dimensional(2D)nanomaterials can lead to significant changes in electronic and optical properties,which enables the development of novel *** strategies for phase engineering of 2D nanomaterials have drawn considerable attention in recent *** review focuses on the state-of-the-art progress in the phase transformation of 2D nanomaterials and their catalytic ***,the basic concepts of phase transformation and the outstanding electronic and optical properties induced by phase transformation are briefly ***,different strategies for achieving phase transformation are discussed in detail and classified into several types based on their characteristics,including(i)doping,(ii)external fields,(iii)optical irradiation,(iv)strain effect,(v)high-energy particle excitation,and(vi)thermal *** applications of 2D nanomaterials in catalysis based on phase transformation have also been ***,a summary of the technical challenges to phase control in 2D nanomaterials and potential opportunities for developing novel applications is presented.

关键词： phase transformation two-dimensional nanomaterials strategy catalysis application

Viscosity and structure relationship with equimolar substitution of CaO with MgO in the CaO–MgO–Al_(2)O_(3)–SiO_(2)slag melts

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 70-79页

作者： yong Hou Shuo Zhang Jie dang Jia Guo Hanghang zhou Xuewei Lü College of Materials Science and Engineering Chongqing UniversityChongqing 400044China Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials Chongqing UniversityChongqing 400044China

Currently,the Al_(2)O_(3)content in the high-alumina slag systems within blast furnaces is generally limited to 16wt%–18.5wt%,making it challenging to overcome this *** most studies that concentrated on managing the MgO/Al_(2)O_(3)ratio or basicity,this paper explored the effect of equimolar substitution of MgO for CaO on the viscosity and structure of a high-alumina CaO-MgO-Al_(2)O_(3)-SiO_(2)slag system,providing theoretical guidance and data to facilitate the application of high-alumina *** results revealed that the viscosity first decreased and then increased with higher MgO substitution,reaching a minimum at 15mol%MgO *** transform infrared spectroscopy(FTIR)results found that the depths of the troughs representing[SiO_(4)]tetrahedra,[AlO_(4)]tetrahedra,and Si-O-Al bending became progressively deeper with increased MgO *** of the Raman spectra showed that the average number of bridging oxygens per Si atom and the X_(Q^(3))/X_(Q^(2))(X_(Q^(i))is the molar fraction of Q^(i) unit,and i is the number of bridging oxygens in a[SiO_(4)]tetrahedral unit)ratio increased from 2.30 and 1.02 to 2.52 and 2.14,respectively,indicating a progressive polymerization of the silicate structure.X-ray photoelectron spectroscopy(XPS)results highlighted that non-bridging oxygen content decreased from 77.97mol% to 63.41mol% with increasing MgO concentration,whereas bridging oxygen and free oxygen contents *** analysis demonstrated a gradual increase in the polymerization degree of the tetrahedral structure with the increase in MgO ***,bond strength is another important factor affecting the slag *** occurrence of a viscosity minimum can be attributed to the complex evolution of bond strengths of non-bridging oxygens generated during depolymerization of the[SiO_(4)]and[AlO_(4)]tetrahedral structures by CaO and MgO.

关键词： aluminosilicate viscosity structure spectroscopy

Transition-metal-free isofunctional reaction of α,β-unsaturated ketones/nitriles

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Science China Chemistry 2025年第2期68卷 499-504页

作者： Runyou Ye Jialin Ming Qinyue Tao Tian-Yu Gao Jian-Heng Ye da-Gang Yu Xiangge zhou Key Laboratory of Green Chemistry&Technology of Ministry of Education College of ChemistrySichuan UniversityChengdu 610064China Inner Mongolia Key Laboratory of Fine Organic Synthesis Inner Mongolia UniversityHohhot 010021China

Isofunctional reactions involving the cleavage of carbon-carbon double bonds(C=C)hold an important position in organic synthesis,as they allow for the restructuring of alkene carbon chains and enable the exchange of functional groups without introducing exogenous ***,these reactions are primarily divided into C=C/C=C metathesis and C=C/C=O metathesis,with most relying on the use of transition metal *** report herein a C=C/CH_(2) metathesis reaction that obviates the need for transition metals and directing groups,and is characterized by economic and straightforward *** reaction not only facilitates the replacement of nitriles with ketones,but also enables the replacement of ketones with nitriles,demonstrating great universality.

关键词： isofunctional reaction transition-metal-free C=C cleavage base-promoted Michael addition

Merging polymers of intrinsic microporosity and porous carbon-based zinc oxide composites in novel mixed matrix membranes for efficient gas separation

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Green Energy & Environment 2025年第1期10卷 203-213页

作者： Muning Chen Jiemei zhou Jing Ma Weigang Zheng Guanying Dong Xin Li Zhihong Tian Yatao Zhang Jing Wang yong Wang School of Chemical Engineering Zhengzhou UniversityZhengzhou450001HenanChina State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemical Engineering Nanjing Tech UniversityNanjing211816JiangsuChina Singapore Membrane Technology Centre Nanyang Environment and Water Research InstituteNanyang Technological UniversitySingapore637141Singapore Engineering Research Center for Nanomaterials Henan UniversityKaifeng475004HenanChina State Key Laboratory of Coking Coal Resources Green Exploitation Zhengzhou UniversityZhengzhou 450001China School of Energy and Environment Southeast UniversityNanjing210096JiangsuChina

Mixed matrix membranes(MMMs)have demonstrated significant promise in energy-intensive gas separations by amalgamating the unique properties of fillers with the facile processability of ***,achieving a simultaneous enhancement of permeability and selectivity remains a formidable challenge,due to the difficulty of achieving an optimal match between polymers and *** this study,we incorporate a porous carbon-based zinc oxide composite(C@ZnO)into high-permeability polymers of intrinsic microporosity(PIMs)to fabricate *** dipole–dipole interaction between C@ZnO and PIMs ensures their exceptional compatibility,mitigating the formation of non-selective voids in the resulting ***,C@ZnO with abundant interconnected pores can provide additional low-resistance pathways for gas transport in *** a result,the CO_(2) permeability of the optimized C@ZnO/PIM-1 MMMs is elevated to 13,215 barrer,while the CO_(2)/N_(2) and CO_(2)/CH_(4) selectivity reached 21.5 and 14.4,respectively,substantially surpassing the 2008 Robeson upper ***,molecular simulation results further corroborate that the augmented membrane gas selectivity is attributed to the superior CO_(2) affinity of C@*** summary,we believe that this work not only expands the application of MMMs for gas separation but also heralds a paradigm shift in the application of porous carbon materials.

关键词： Mixed matrix membranes Polymers of intrinsic microporosity CO_(2)separation Porous carbon materials