Author
Xiang-Rong Xu
Other affiliations: University of Hong Kong, Hong Kong Polytechnic University
Bio: Xiang-Rong Xu is an academic researcher from Chinese Academy of Sciences. The author has contributed to research in topics: Microplastics & Medicine. The author has an hindex of 48, co-authored 130 publications receiving 7024 citations. Previous affiliations of Xiang-Rong Xu include University of Hong Kong & Hong Kong Polytechnic University.
Papers published on a yearly basis
Papers
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TL;DR: This review summarizes current knowledge of natural polyphenols, including resource, bioactivities, bioavailability and potential toxicity.
Abstract: The oxidative stress imposed by reactive oxygen species (ROS) plays an important role in many chronic and degenerative diseases. As an important category of phytochemicals, phenolic compounds universally exist in plants, and have been considered to have high antioxidant ability and free radical scavenging capacity, with the mechanism of inhibiting the enzymes responsible for ROS production and reducing highly oxidized ROS. Therefore, phenolic compounds have attracted increasing attention as potential agents for preventing and treating many oxidative stress-related diseases, such as cardiovascular diseases, cancer, ageing, diabetes mellitus and neurodegenerative diseases. This review summarizes current knowledge of natural polyphenols, including resource, bioactivities, bioavailability and potential toxicity.
568 citations
TL;DR: In this paper, the first-order kinetic model was used to investigate the effect of pH, pH, dosages of persulfate and Fe2+, temperature, and presence of inorganic ions (Cl−, NO3−, HCO3− and H2PO4−) on OG degradation.
404 citations
TL;DR: The results show that heavy metal levels were closely associated with local economic development and Hong Kong and the Pearl River Estuary were severely contaminated by heavy metals.
364 citations
TL;DR: It is indicated that wastewater treatment plants (WWTP) could reduce microplastics from municipal sewage which was finally discharged into the Pearl River along Guangzhou.
310 citations
TL;DR: In this article, the antioxidant capacities and total phenolic contents of 56 commonly consumed vegetables were studied, and the results showed that the antioxidant capacity and phenolic content in the lipophilic fraction were higher than those in hydrophilic fraction.
236 citations
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TL;DR: A review of phenolic and polyphenolic compounds can be found in this article, which summarizes both the synthetic and natural phenolic antioxidants, emphasizing their mode of action, health effects, degradation products and toxicology.
1,800 citations
TL;DR: The field of surface science provides a unique approach to understand bulk, surface and interfacial phenomena occurring during TiO2 photocatalysis as mentioned in this paper, including photon absorption, charge transport and trapping, electron transfer dynamics, adsorbed state, mechanisms, poisons and promoters, and phase and form.
1,768 citations
TL;DR: In this paper, the authors present a general review of advanced oxidation processes developed to decolorize and/or degrade organic pollutants and highlight the application of nano-zero valent iron in treating refractory compounds.
Abstract: The increase in the disposal of refractory organics demands for newer technologies for the complete mineralization of these wastewaters. Advanced oxidation processes (AOPs) constitute a promising technology for the treatment of such wastewaters and this study presents a general review on such processes developed to decolorize and/or degrade organic pollutants. Fundamentals and main applications of typical methods such as Fenton, electro-Fenton, photo-Fenton, sono-Fenton, sono-photo-Fenton, sono-electro-Fenton and photo-electro-Fenton are discussed. This review also highlights the application of nano-zero valent iron in treating refractory compounds.
1,256 citations
TL;DR: In this paper, the authors provide an overview of various methods for analysis of persulfate decontamination and their analysis is often prone for interference by other matrix components and hampered by the low stability of peroxydisulfate and peroxymonosulfate in aqueous systems.
1,197 citations
TL;DR: Animal studies have revealed the promising in vivo therapeutic effect of antioxidants on liver diseases, and various factors that cause oxidative stress in liver and effects of antioxidants in the prevention and treatment of liver diseases were summarized, questioned, and discussed.
Abstract: A complex antioxidant system has been developed in mammals to relieve oxidative stress. However, excessive reactive species derived from oxygen and nitrogen may still lead to oxidative damage to tissue and organs. Oxidative stress has been considered as a conjoint pathological mechanism, and it contributes to initiation and progression of liver injury. A lot of risk factors, including alcohol, drugs, environmental pollutants and irradiation, may induce oxidative stress in liver, which in turn results in severe liver diseases, such as alcoholic liver disease and non-alcoholic steatohepatitis. Application of antioxidants signifies a rational curative strategy to prevent and cure liver diseases involving oxidative stress. Although conclusions drawn from clinical studies remain uncertain, animal studies have revealed the promising in vivo therapeutic effect of antioxidants on liver diseases. Natural antioxidants contained in edible or medicinal plants often possess strong antioxidant and free radical scavenging abilities as well as anti-inflammatory action, which are also supposed to be the basis of other bioactivities and health benefits. In this review, PubMed was extensively searched for literature research. The keywords for searching oxidative stress were free radicals, reactive oxygen, nitrogen species, anti-oxidative therapy, Chinese medicines, natural products, antioxidants and liver diseases. The literature, including ours, with studies on oxidative stress and anti-oxidative therapy in liver diseases were the focus. Various factors that cause oxidative stress in liver and effects of antioxidants in the prevention and treatment of liver diseases were summarized, questioned, and discussed.
1,112 citations