Tea polyphenols(TPPs)have attracted significant research interest due to their health benefits.However,TPPs are sensitive to certain environmental and gastrointestinal conditions and their oral bioavailability was fou...Tea polyphenols(TPPs)have attracted significant research interest due to their health benefits.However,TPPs are sensitive to certain environmental and gastrointestinal conditions and their oral bioavailability was found to be very low.Delivery systems made of food-grade materials have been reported to improve the shelf-life,bioavailability and bioefficacy of TPPs.This review discusses the chemistry of TPPs;the setbacks of TPPs for application;and the strategies to counteract application limitations by rationally designing delivery systems.An overview of different formulations used to encapsulate TPPs is provided in this study,such as emulsion-based systems(liposome,nanoemulsion,double emulsion,and Pickering emulsion)and nano/microparticles-based systems(protein-based,carbohydrate-based,and bi-polymer based).In addition,the stability,bioavailability and bioactivities of encapsulated TPPs are evaluated by various in vitro and in vivo models.The current findings provide scientific insights in encapsulation approaches for the delivery of TPPs,which can be of great value to TPPs-fortified food products.Further explorations are needed for the encapsulated TPPs in terms of their applications in the real food industry as well as their biological fate and functional pathways in vivo.展开更多
This study reports on the safety and putative probiotic properties of Bacillus amyloliquefaciens B-1895 and Bacillus subtilis KATMIRA1933. According to the bacterial reverse mutation (Ames) test, cell-free supernatant...This study reports on the safety and putative probiotic properties of Bacillus amyloliquefaciens B-1895 and Bacillus subtilis KATMIRA1933. According to the bacterial reverse mutation (Ames) test, cell-free supernatants of B. amyloliquefaciens B-1895 and B. subtilis KATMIRA1933 were not mutagenic. The two strains co-aggregated with Escherichia coli and Pseudomonas aeruginosa, and cell-free supernatants inhibited the growth of Streptococcus intermedius and Porphyromonas gingivalis. Endospores of B. amyloliquefaciens B-1895 and B. subtilis KATMIRA1933 were tolerant to 0.3% (w/v) bile salts and survived incubation for 4 h in MRS broth at pH 2.0 to 3.0. The ability of the two strains to produce antimicrobial compounds potentiates their application in health care formulations, personal care products, food and animal feed.展开更多
Microorganisms live in almost every habitat on the earth from the poles to the equator,from forest to desert,from mountain to deep sea,from geysers to karst structures,as well as the body of almost all multicellular o...Microorganisms live in almost every habitat on the earth from the poles to the equator,from forest to desert,from mountain to deep sea,from geysers to karst structures,as well as the body of almost all multicellular organisms from plants to animals.Essentially,species among the microbial populations interact in different ways,as predators and prey,or as symbionts in the form of communities.展开更多
Endothelium,acting as a barrier,protects tissues against factors that provoke insulin resistance and type 2 diabetes and itself responds to the insult of insulin resistance inducers with altered function.Endothelial i...Endothelium,acting as a barrier,protects tissues against factors that provoke insulin resistance and type 2 diabetes and itself responds to the insult of insulin resistance inducers with altered function.Endothelial insulin resistance and vascular dysfunction occur early in the evolution of insulin resistance-related disease,can co-exist with and even contribute to the development of metabolic insulin resistance,and promote vascular complications in those affected.The impact of endothelial insulin resistance and vascular dysfunction varies depending on the blood vessel size and location,resulting in decreased arterial plasticity,increased atherosclerosis and vascular resistance,and decreased tissue perfusion.Women with insulin resistance and diabetes are disproportionately impacted by cardiovascular disease,likely related to differential sex-hormone endothelium effects.Thus,reducing endothelial insulin resistance and improving endothelial function in the conduit arteries may reduce atherosclerotic complications,in the resistance arteries lead to better blood pressure control,and in the microvasculature lead to less microvascular complications and more effective tissue perfusion.Multiple diabetes therapeutic modalities,including medications and exercise training,improve endothelial insulin action and vascular function.This action may delay the onset of type 2 diabetes and/or its complications,making the vascular endothelium an attractive therapeutic target for type 2 diabetes and potentially type 1 diabetes.展开更多
文摘Tea polyphenols(TPPs)have attracted significant research interest due to their health benefits.However,TPPs are sensitive to certain environmental and gastrointestinal conditions and their oral bioavailability was found to be very low.Delivery systems made of food-grade materials have been reported to improve the shelf-life,bioavailability and bioefficacy of TPPs.This review discusses the chemistry of TPPs;the setbacks of TPPs for application;and the strategies to counteract application limitations by rationally designing delivery systems.An overview of different formulations used to encapsulate TPPs is provided in this study,such as emulsion-based systems(liposome,nanoemulsion,double emulsion,and Pickering emulsion)and nano/microparticles-based systems(protein-based,carbohydrate-based,and bi-polymer based).In addition,the stability,bioavailability and bioactivities of encapsulated TPPs are evaluated by various in vitro and in vivo models.The current findings provide scientific insights in encapsulation approaches for the delivery of TPPs,which can be of great value to TPPs-fortified food products.Further explorations are needed for the encapsulated TPPs in terms of their applications in the real food industry as well as their biological fate and functional pathways in vivo.
文摘This study reports on the safety and putative probiotic properties of Bacillus amyloliquefaciens B-1895 and Bacillus subtilis KATMIRA1933. According to the bacterial reverse mutation (Ames) test, cell-free supernatants of B. amyloliquefaciens B-1895 and B. subtilis KATMIRA1933 were not mutagenic. The two strains co-aggregated with Escherichia coli and Pseudomonas aeruginosa, and cell-free supernatants inhibited the growth of Streptococcus intermedius and Porphyromonas gingivalis. Endospores of B. amyloliquefaciens B-1895 and B. subtilis KATMIRA1933 were tolerant to 0.3% (w/v) bile salts and survived incubation for 4 h in MRS broth at pH 2.0 to 3.0. The ability of the two strains to produce antimicrobial compounds potentiates their application in health care formulations, personal care products, food and animal feed.
文摘Microorganisms live in almost every habitat on the earth from the poles to the equator,from forest to desert,from mountain to deep sea,from geysers to karst structures,as well as the body of almost all multicellular organisms from plants to animals.Essentially,species among the microbial populations interact in different ways,as predators and prey,or as symbionts in the form of communities.
基金supported by grants from the National Institutes of Health(R01DK125330 and R01DK102359 to Z.L.F32DK121A31)+1 种基金supported in part by the National Center for Advancing Translational Sciences of the National Institutes of Health under the award numbers UL1TR003015 and KL2TR003016supported by VA Merit Review BX002046,VA Clinical Merit Review CX001532,UL1 TR000154,and P30 DK116073.
文摘Endothelium,acting as a barrier,protects tissues against factors that provoke insulin resistance and type 2 diabetes and itself responds to the insult of insulin resistance inducers with altered function.Endothelial insulin resistance and vascular dysfunction occur early in the evolution of insulin resistance-related disease,can co-exist with and even contribute to the development of metabolic insulin resistance,and promote vascular complications in those affected.The impact of endothelial insulin resistance and vascular dysfunction varies depending on the blood vessel size and location,resulting in decreased arterial plasticity,increased atherosclerosis and vascular resistance,and decreased tissue perfusion.Women with insulin resistance and diabetes are disproportionately impacted by cardiovascular disease,likely related to differential sex-hormone endothelium effects.Thus,reducing endothelial insulin resistance and improving endothelial function in the conduit arteries may reduce atherosclerotic complications,in the resistance arteries lead to better blood pressure control,and in the microvasculature lead to less microvascular complications and more effective tissue perfusion.Multiple diabetes therapeutic modalities,including medications and exercise training,improve endothelial insulin action and vascular function.This action may delay the onset of type 2 diabetes and/or its complications,making the vascular endothelium an attractive therapeutic target for type 2 diabetes and potentially type 1 diabetes.
