The functional fruit and vegetable honeys were produced by the natural bee feeding method with pomegranate,orange and black carrot concentrates.The natural enrichment method did not cause any negative effects on the q...The functional fruit and vegetable honeys were produced by the natural bee feeding method with pomegranate,orange and black carrot concentrates.The natural enrichment method did not cause any negative effects on the quality criteria questioned in the standards such as moisture,pH,free acidity and HMF(Hydroxymethylfurfuraldehyde)content and the quality of the functional honeys obtained was high.Parallel to TPC contents,the antioxidant values of the honeys were increased 5.00-31.50,16.09-53.96 and 21.18-39.72%by enrichment of orange,pomegranate,and black carrot concentrates.Gallic acid in pomegranate honey(14.52%)and chlorogenic acid in black carrot honey(27.01%)were determined as antioxidant components increased by enrichment.The enrichment process also led to an increase in the bioaccessibility characteristics.The increased antioxidant activity of functional honeys(DPPH)was verified by a high negative correlation value(R=0.9103)and decreasing IC50 ratios in the opposite direction.展开更多
Sialic acids as terminal entities of larger glycans linked to proteins and lipids are involved in multiple different pathological and physiological processes.Structural characterisation of sialoglycoconjugates is requ...Sialic acids as terminal entities of larger glycans linked to proteins and lipids are involved in multiple different pathological and physiological processes.Structural characterisation of sialoglycoconjugates is required to understand their biological function.However,a comprehensive sialylation analysis of sialoglycoconjugates has remained challenges.In this study,we employ a natural biomaterial,poplar catkin derived from white poplar tree（Populus tomentosa Carr.）,to develop a novel capturing microtip for selective and efficient enrichment of sialoglycopeptides,without losses of sialic acid residues and water molecules from sialoglycopeptides.Scanning electron microscopy and Fourier-transform infrared spectroscopy analysis,along with Maule and Wiesner staining assays,indicated that the main components on the outer layer of the poplar catkin are syringyl and guaiacyl lignins which play a key role in enriching sialoglycopeptides from complex peptide mixture.展开更多
Decarbonization of energy economy is nowadays a topical theme,and several pathways are under discussion.Gaseous fuels have a fundamental role for this transition,and the production of low carbon-impact fuels is necess...Decarbonization of energy economy is nowadays a topical theme,and several pathways are under discussion.Gaseous fuels have a fundamental role for this transition,and the production of low carbon-impact fuels is necessary to deal with this challenge.The generation of renewable hydrogen is a trusted solution since this energy vector can be promptly produced from electricity and injected into the existing natural gas infrastructure,granting storage capacity and easy transportation.This scenario will lead,in the near future,to hydrogen enrichment of natural gas,whose impact on the infrastructures is being actively studied.The effect on end-user devices such as domestic gas boilers,instead,is still little analyzed and tested,but is fundamental to be assessed.The aim of this research is to generate knowledge on the effect of hydrogen enrichment on the widely used premixed boilers:the investigations include pollutant emissions,efficiency,flashback and explosion hazard,control system and materials selection.A model for calculating several parameters related to combustion of hydrogen enriched natural gas is presented.Guidelines for the design of new components are provided,and an insight is given on the maximum hydrogen blending bearable by the current boilers.展开更多
文摘The functional fruit and vegetable honeys were produced by the natural bee feeding method with pomegranate,orange and black carrot concentrates.The natural enrichment method did not cause any negative effects on the quality criteria questioned in the standards such as moisture,pH,free acidity and HMF(Hydroxymethylfurfuraldehyde)content and the quality of the functional honeys obtained was high.Parallel to TPC contents,the antioxidant values of the honeys were increased 5.00-31.50,16.09-53.96 and 21.18-39.72%by enrichment of orange,pomegranate,and black carrot concentrates.Gallic acid in pomegranate honey(14.52%)and chlorogenic acid in black carrot honey(27.01%)were determined as antioxidant components increased by enrichment.The enrichment process also led to an increase in the bioaccessibility characteristics.The increased antioxidant activity of functional honeys(DPPH)was verified by a high negative correlation value(R=0.9103)and decreasing IC50 ratios in the opposite direction.
基金supported by the National Natural Science Foundation of China(No.21575164)to Z.L
文摘Sialic acids as terminal entities of larger glycans linked to proteins and lipids are involved in multiple different pathological and physiological processes.Structural characterisation of sialoglycoconjugates is required to understand their biological function.However,a comprehensive sialylation analysis of sialoglycoconjugates has remained challenges.In this study,we employ a natural biomaterial,poplar catkin derived from white poplar tree（Populus tomentosa Carr.）,to develop a novel capturing microtip for selective and efficient enrichment of sialoglycopeptides,without losses of sialic acid residues and water molecules from sialoglycopeptides.Scanning electron microscopy and Fourier-transform infrared spectroscopy analysis,along with Maule and Wiesner staining assays,indicated that the main components on the outer layer of the poplar catkin are syringyl and guaiacyl lignins which play a key role in enriching sialoglycopeptides from complex peptide mixture.
文摘Decarbonization of energy economy is nowadays a topical theme,and several pathways are under discussion.Gaseous fuels have a fundamental role for this transition,and the production of low carbon-impact fuels is necessary to deal with this challenge.The generation of renewable hydrogen is a trusted solution since this energy vector can be promptly produced from electricity and injected into the existing natural gas infrastructure,granting storage capacity and easy transportation.This scenario will lead,in the near future,to hydrogen enrichment of natural gas,whose impact on the infrastructures is being actively studied.The effect on end-user devices such as domestic gas boilers,instead,is still little analyzed and tested,but is fundamental to be assessed.The aim of this research is to generate knowledge on the effect of hydrogen enrichment on the widely used premixed boilers:the investigations include pollutant emissions,efficiency,flashback and explosion hazard,control system and materials selection.A model for calculating several parameters related to combustion of hydrogen enriched natural gas is presented.Guidelines for the design of new components are provided,and an insight is given on the maximum hydrogen blending bearable by the current boilers.
