Article
Biochemistry & Molecular Biology
Catalina Pino, Betsabet Sepulveda, Francisco Tapia, Jorge Saavedra, Diego L. Garcia-Gonzalez, Nalda Romero
Summary: This study investigates the impact of mild frost on the composition of volatiles and phenolic compounds in virgin olive oil. The results show that frost has a low impact on the chemical composition of olive oil, depending on the ripening stage.
Article
Environmental Sciences
Erin A. Hull, Marco Barajas, Kenneth A. Burkart, Samantha R. Fung, Brian P. Jackson, Pamela M. Barrett, Rebecca B. Neumann, Julian D. Olden, James E. Gawel
Summary: The research found elevated arsenic concentrations in Puget Sound region lakes, with significant bioaccumulation in plankton. Factors such as seasonal mixing and near-bottom anoxia influence arsenic uptake. Monitoring and risk assessment of arsenic contamination should focus on shallow zones in lakes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Food Science & Technology
Gianluca Veneziani, Davide Nucciarelli, Agnese Taticchi, Sonia Esposto, Roberto Selvaggini, Roberto Tomasone, Mauro Pagano, Maurizio Servili
Summary: In this study, the impact of different temperatures during the malaxation process of virgin olive oil was investigated, revealing that low temperature has a significant effect on the phenolic and volatile contents of the oil, with different olive cultivars showing varying characteristics due to temperature variations.
Article
Biodiversity Conservation
Xiujun Liu, Jihong Xia, Jiayi Zu, Zhuo Zeng, Yan Li, Jingjiang Li, Qihua Wang, Zewen Liu, Wangwei Cai
Summary: Shallow lakes are difficult to manage due to their proneness to water quality deterioration. Turbidity, a commonly used parameter, can be used to estimate water quality. This study conducted continuous field observations and monitoring of turbidity in Baoan Lake, China, and identified the risk levels of water turbidity using gradient analysis. The results showed that turbidity varied seasonally, with higher values in summer and autumn and lower values in winter. The methodology proposed in this study provides a new tool for quantifying spatial gradient variation of water turbidity and determining high-risk areas and risk levels.
ECOLOGICAL INDICATORS
(2023)
Article
Environmental Sciences
Reshmi Das, H. N. Chanakya, Lakshminarayana Rao
Summary: The study revealed that the significant source of pollution in Bellandur Lake was the entry of untreated sewage, containing surfactants. The anionic surfactant concentration in the Lake was 17 ± 3 ppm, and the surface tension remained around 50 mN/m. The presence of bacteria, with the most contributing family being Flavobacteriia, played a crucial role in stabilizing the foam.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Plant Sciences
Fanhui Gao, Wanying Xie, Hao Zhang, Suhong Li, Tuoping Li
Summary: This study found that low-temperature storage can delay the postharvest senescence of morels and maintain their quality. Low-temperature storage can prevent the loss of water and firmness, delay the respiration and ethylene peak, and reduce the loss of nutrients and cell membrane permeability. Furthermore, the content and changes of aroma compounds also vary during low-temperature storage.
JOURNAL OF PLANT PHYSIOLOGY
(2023)
Article
Multidisciplinary Sciences
Chunqiao Song, Xingan Jiang, Chenyu Fan, Linsen Li
Summary: Urban lakes provide essential ecological services to local communities, but they are facing significant pressure due to rapid urbanization. This study has produced a high-resolution map of urban lakes in China, which will contribute to a better understanding of their distribution pattern and support sustainable development planning.
Article
Food Science & Technology
Davide Nucciarelli, Sonia Esposto, Gianluca Veneziani, Luigi Daidone, Stefania Urbani, Agnese Taticchi, Roberto Selvaggini, Maurizio Servili
Summary: The use of new technology to reduce the temperature of olive paste improves the quality of extra virgin olive oil by reducing oxidative processes and protecting phenolic compounds.
FOOD AND BIOPROCESS TECHNOLOGY
(2022)
Article
Environmental Sciences
J. Vazquez Santiago, R. Sosa Echeverria, R. Garza Galindo, G. Fuentes Garcia
Summary: 1,3-butadiene (1,3-BD) is a pollutant with high ozone formation potential and proven toxicity. The Mexico City Metropolitan area lacks routine measurements and regulations for this compound. Exhaust emissions are identified as the primary source of 1,3-BD within urban environments, with higher concentrations observed during the warm season, which coincides with the high ozone season. Continuous measurement and regulation of 1,3-butadiene concentrations are crucial for improving air quality.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Food Science & Technology
Leeanny Caipo, Ana Sandoval, Betsabet Sepulveda, Edwar Fuentes, Rodrigo Valenzuela, Adam H. Metherel, Nalda Romero
Summary: This study investigated the impact of storage conditions on the quality of Arbequina EVOO, revealing different compound variations under different storage conditions. Additionally, (E)-2-nonenal was identified as a marker for the degradation of EVOO quality, with significant linear regressions observed at certain temperatures. Monitoring (E)-2-nonenal levels could help in detecting early oxidation in EVOO.
Article
Plant Sciences
Hao-Cheng Lu, Wei-Kai Chen, Yu Wang, Xian-Jin Bai, Guo Cheng, Chang-Qing Duan, Jun Wang, Fei He
Summary: This study analyzed the fruit volatile compounds of four grape varieties in four consecutive seasons in the Guangxi region of South China. The results showed that high temperature was the main climate factor affecting the volatile compounds in the summer and winter seasons. Transcriptome analysis revealed that upregulated gene expressions might contribute to the accumulation of certain compounds in the winter berries.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Environmental Sciences
Xudong Zheng, Jie Ren, Yufang Hao, Shaodong Xie
Summary: Periodical changes of human activities lead to weekend-weekday differences in volatile organic compounds (VOCs) and nitrogen oxides (NO + NO2 = NOx) emissions, resulting in urban ozone (O3) pollution and secondary organic aerosol (SOA) in fine particulate matter (PM2.5). The influence of differences in primary emissions between weekends and weekdays on the production of secondary pollutants is still unknown. This study used the TROPOspheric Monitoring Instrument and surface observations to monitor VOCs, NO2, O3, and PM2.5 concentrations in urban Zhengzhou, China during weekends and weekdays. The results showed that reductions in anthropogenic activities during weekends led to decreases in atmospheric VOCs and NO2. The ratios of formaldehyde columns to NO2 columns were less than 2.30 during both weekends and weekdays, indicating the O3 formation under VOC-limited conditions. Lower total VOCs (TVOCs) mixing ratios but higher ratios of TVOCs mixing ratios to NO2 mixing ratios during weekends promoted faster photochemical O3 production. In contrast, higher TVOCs mixing ratios were responsible for higher SOA formation during weekdays. Solvent usage, vehicle exhaust, and industrial sources were found to be major contributors to SOA (80.1%) and O3 (79.9%) formation potential based on the positive matrix factorization model and VOCs reactivities. To reduce O3 concentrations during weekends and SOA concentrations during weekdays, solvent, vehicle, and industrial activities should be shifted from weekdays to weekends.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Plant Sciences
Annalisa Meucci, Anton Shiriaev, Irene Rosellini, Fernando Malorgio, Beatrice Pezzarossa
Summary: The study found that foliar spray with selenium salts can enrich tomatoes with selenium and improve quality traits, especially when performed at the flowering stage, resulting in positive changes in fruit aroma profile.
Article
Environmental Sciences
Xiaoyu Wang, Yinqun Yang, Jing Wan, Zhuo Chen, Nan Wang, Yanqi Guo, Yonggui Wang
Summary: Rapid urbanisation has had a significant impact on the ecological environment of urban lakes worldwide. In order to maintain the harmony between urban progress and water quality, it is crucial to quantitatively evaluate water quality variation and explore driving factors. This study used a comprehensive evaluation method with cluster analysis and Kriging interpolation to investigate the spatiotemporal variation of Chaohu Lake, a typical urban lake in China, from 2011 to 2020. The results showed that total phosphorus and total nitrogen were the key pollution parameters of the lake. The water quality improved gradually, especially in terms of chemical oxygen demand due to anthropogenic control. There was notable spatial heterogeneity in water quality, with better water quality in the east compared to the west. The study also identified the main reasons for this spatial heterogeneity, which were the natural attributes of the lake and external load. The concentration of residential areas and the discharge of industrial and domestic sewage aggravated water pollution in the western tributaries of Chaohu Lake Basin. However, recent water environmental governance policies have helped alleviate water pollution, leading to significant improvement in water quality in both the west and east regions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Construction & Building Technology
Xiaolei Geng, Dou Zhang, Chengwei Li, Yuan Yuan, Zhaowu Yu, Xiangrong Wang
Summary: This study aimed to investigate the impact of climatic zones on the urban heat island (UHI) effect. The results showed that cities in the south subtropical zone, middle subtropical zone, and north subtropical zone exhibited significant increasing trends in average daytime UHI intensity, while the nighttime showed the opposite rule in general. Multiple factors influenced the variations of UHI intensity during daytime and nighttime.
SUSTAINABLE CITIES AND SOCIETY
(2023)
Article
Environmental Sciences
Chenrun Jiang, Sibo Zhang, Junfeng Wang, Xinghui Xia
Summary: This study investigated the differences in community composition and abundance of nitrogen transformation microbes under dark and light conditions in riverine overlying water. The results showed significant changes in the bacterial community under light exposure, with certain microbes being inhibited by sunlight. Additionally, the accumulated amounts of N-15-N-2 and N-15-N2O were reduced in the light microcosm, indicating that sunlight exposure decreases nitrogen removal in riverine overlying water.
Article
Engineering, Multidisciplinary
Xinghui Xia, Yanan Liu, Zhenrui Zhang, Nannan Xi, Jiaao Bao, Zhifeng Yang
Summary: China's efforts in fighting environmental contamination during rapid development and industrialization have led to a decrease in soil polycyclic aromatic hydrocarbon (PAH) pollution. The adjustments made in the country's energy structure, such as reducing coal consumption and increasing the use of clean energy sources, have contributed to this decline. This study highlights the importance of energy restructuring in decreasing PAH concentrations and improving soil environmental quality.
Article
Environmental Sciences
Yilin Xiao, Xiaohan Lin, Haotian Wang, Xinghui Xia
Summary: This study found that zebrafish can absorb hydrophobic organic compounds (HOCs), such as polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs), through dermal uptake. The dermal uptake is an important pathway for HOCs bioconcentration in fish, and should be considered in the study of toxicodynamics and toxicokinetics of HOCs.
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2023)
Article
Environmental Sciences
Wu Wen, Lu Xiao, Diexuan Hu, Zhining Zhang, Yilin Xiao, Xiaoman Jiang, Shangwei Zhang, Xinghui Xia
Summary: This study investigated the bioaccumulation and fractionation of 11 PFAAs along an aquatic food chain. The results showed that shorter chain PFAAs had lower proportions in organisms compared to exposure water, while longer chain PFAAs had higher proportions. Predation promoted these fractionation differences, with shorter chain PFAAs being replaced by their longer chain analogues. This study highlights the importance of considering fractionation in studying the environmental behaviors and ecological risks of multiple PFAAs.
Article
Environmental Sciences
Zhenrui Zhang, Shaoda Liu, Xilong Wang, Shurui Huang, Ke Sun, Xinghui Xia
Summary: Humic substances (HSs) significantly influence the transport and bioavailability of hydrophobic organic compounds (HOCs) in soils. This study investigated the sorption behavior of HOCs by different HS fractions in soils from different climatic zones. The results showed that HSs from colder climatic zones exhibited higher sorption affinity and different compositions compared to those from warmer climatic zones. The findings highlights the importance of considering the sorption differences of HOCs to HSs among different climatic zones in predicting HOC fates and bioavailability in soils.
ENVIRONMENTAL POLLUTION
(2023)
Article
Engineering, Environmental
Xin Chen, Sibo Zhang, Jiao Liu, Junfeng Wang, Yuan Xin, Siyue Sun, Xinghui Xia
Summary: This study investigated the microbial sources of nitrous oxide (N2O) in rivers and the degree of N2O reduction. The findings suggest that nitrification and nitrifier denitrification are the dominant processes controlling N2O production in rivers, and intense microbial reduction significantly contributes to the low N2O emissions observed. The production and consumption of N2O in rivers should be considered in future research.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Haotian Wang, Diexuan Hu, Wu Wen, Xiaohan Lin, Xinghui Xia
Summary: In this study, it was found that warming increases the bioaccumulation of per- and polyfluoroalkyl substances (PFAS) in pelagic organisms due to increased water concentrations. However, warming did not significantly affect PFAS accumulation in benthic organisms, except for certain types, which was consistent with declined sediment concentrations. The findings highlight the importance of considering the media-specific effects of temperature on PFAS concentrations in ecological risk assessments under climate change.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Gongqin Wang, Shaoda Liu, Siyue Sun, Xinghui Xia
Summary: The constituents and functionality of urban inland waters are disturbed by municipal sewage inputs and tailwater discharge from wastewater treatment plants, leading to significant perturbations in greenhouse gas dynamics. A lack of in situ measurements has resulted in large knowledge gaps in this understanding. Through a 3-year field campaign, the CO2 emission and related factors in the municipality of Beijing were investigated, revealing unique greenhouse gas emission profiles and emphasizing the importance of accounting for urban inland waters in terms of aquatic greenhouse gas emissions.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Environmental
Qing Zhang, Yingying Yang, Nanxiu Shang, Yu Xiao, Yilin Xiao, Yanna Liu, Xiaoman Jiang, Edmond Sanganyado, Shaoda Liu, Xinghui Xia
Summary: There is growing evidence that the transformation products of emerging contaminants in foodstuffs may pose a health risk to humans. In this study, various neonicotinoid insecticides and their transformation products were identified in retail cowpea samples from 11 cities in Hainan Province, China. The presence of new transformation products suggests that pesticide transformation products should be considered in risk assessments and regulatory management.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Jie Zhang, Chuanxin Ma, Xinghui Xia, Yao Li, Xiaohan Lin, Yidi Zhang, Zhifeng Yang
Summary: Positively charged nanoplastics induce stronger growth inhibition and gut damage in Chironomus kiinensis larvae compared to negatively charged nanoplastics. This is because the positively charged nanoplastics accumulate more readily in the gut, causing more severe oxidative stress, epithelial damage, and inflammatory responses. The positively charged nanoplastics also have a lower agglomeration rate, leading to increased interaction with gut cell membranes and microbiota. Furthermore, exposure to positively charged nanoplastics results in lower alpha diversity and relative abundance of key gut microbiota, exacerbating gut and growth damage.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Shangwei Zhang, Wu Wen, Xinghui Xia, Wei Ouyang, Bi-xian Mai, Lorenz Adrian, Gerrit Schuurmann
Summary: Thermodynamics reveals a proton-coupled two-electron transfer mechanism in microbial B-12-dependent reductive dehalogenation of aromatics, enhancing our understanding of the dehalogenation process.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Civil
Sibo Zhang, Xinghui Xia, Yuan Xin, Xiaokang Li, Junfeng Wang, Leilei Yu, Cangbai Li, William H. McDowell, Qian Tan, Zhifeng Yang
Summary: This study found that electrical conductivity is a reliable indicator for assessing the effect of land use types on stream N2O concentrations. It reflects the different levels of N2O concentration and flux in streams across different land uses. Higher electrical conductivity is associated with higher carbon and nutrient levels, as well as abundance of N2O-producing microbes. Electrical conductivity also has the potential to indicate the magnitude of exogenous N2O input across different land uses.
JOURNAL OF HYDROLOGY
(2023)
Article
Chemistry, Physical
Shangwei Zhang, Wei Ouyang, Xinghui Xia, Wu Wen, Lorenz Adrian, Gerrit Schueuermann
Summary: Microbial reductive dechlorination is an environmentally friendly and highly desirable method for addressing PCB pollution in soil, sediment, and underground water. The reaction is catalyzed by supernucleophilic cob(i)alamin housed in reductive dehalogenases (RDases), but the mechanism is still unknown.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Engineering, Environmental
Chenrun Jiang, Sibo Zhang, Junfeng Wang, Xinghui Xia
Summary: The influence of light irradiance on N2O emissions in river systems was studied. It was found that light inhibited N2O emissions in the ammonium system and significantly reduced N2O emissions in the nitrate system. Higher light conditions in the nitrate system led to increased N2O reduction and decreased N2O production, resulting in lower N2O emissions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Yawei Zhai, Haotian Wang, Xiaohan Lin, Xinghui Xia
Summary: This study investigated the bioaccumulation of polycyclic aromatic hydrocarbons (PAHs) in different tissues of zebrafish. It was found that there was variation in the concentrations of PAHs in different tissues, with the highest concentration observed in the skin and the lowest concentration in the fish muscle. The distribution of PAHs was related to lipid content in the tissues, but this correlation was not significant. The study also demonstrated that the physiological based toxicokinetic (PBTK) model could accurately predict PAH concentrations in different fish tissues.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)