Review
Chemistry, Analytical
Sergio L. C. Ferreira, Victor Cerda, Lindomar A. Portugal, Lucas B. Goncalves, Joao H. Santos Neto, Joao B. Pereira Junior, Edwin Palacio
Summary: This study discusses the methods for selenium speciation analysis using CVG-AFS and their advantages and drawbacks.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2022)
Article
Environmental Sciences
Joanna Burger, Michael Gochfeld
Summary: The study revealed variations in mercury and selenium levels, as well as selenium:mercury molar ratios, within and between species in New Jersey. While selenium can help mitigate mercury toxicity, the effectiveness declines as fish size increases, leading to lower selenium:mercury molar ratios.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Murat Yabanli, Sami Tay
Summary: The study revealed that the highest level of selenium was found in soil ponds sea bream, while the highest mercury concentration was detected in wild species sea bream. Risk assessment conducted with Se-HBV showed positive values for each group of sea bream.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Analytical
Haiyan Yang, Liping Qi, Jinrong Zhou, Qian Li, Xin Yuan, Mei Zhang, Yong He, Ke Huang, Piaopiao Chen
Summary: The study investigates the regulation effect of silver ions (Ag+) on the signal of mercury ions (Hg2+) and develops a cation-modulated strategy for oxalate assay using chemical vapor generation (CVG) technology. By monitoring the Hg2+ signal, the content of oxalate can be quantified due to its reaction with Ag+ to generate Ag2C2O4. This method shows promise for point-of-care testing in clinical diagnosis, as it accurately detects oxalate levels in clinical urine samples of urinary stones patients.
ANALYTICA CHIMICA ACTA
(2023)
Article
Horticulture
Wenyao Shi, Yuzhu Hou, Zezhou Zhang, Xuebin Yin, Xiaohu Zhao, Linxi Yuan
Summary: This study found that the three-step sequential extraction method (aqueous solution extraction-pepsin extraction-trypsin extraction) performed the best in extracting selenium from high selenium-enriched Ganoderma lucidum, with a total selenium extraction rate of 65% and a total selenium enzymatic hydrolysis rate of 40%. The selenium speciation in this high selenium-enriched Ganoderma lucidum was determined. This study provides a reliable and efficient method to evaluate the selenium transformation and safety in high selenium-enriched edible fungi.
Article
Environmental Sciences
Olof Regnell, Sylvie V. M. Tesson, Nikolay Oskolkov, Michelle Nerentorp
Summary: A study found a positive correlation between selenium and mercury in freshwater fish. Selenium mitigates the toxicity of mercury but can divert from biosynthetic pathways. The study also observed a surplus of selenium in fish and found that it decreased with fish weight. This suggests that selenium accumulation is subject to homeostatic control and is related to the burden of mercury and selenium requirement.
WATER AIR AND SOIL POLLUTION
(2022)
Article
Environmental Sciences
Arianna Storelli, Grazia Barone, Rita Garofalo, Antonio Busco, Maria Maddalena Storelli
Summary: This study measures the concentrations of total mercury (THg), methylmercury (MeHg), and selenium (Se) in elasmobranch fish from an Italian market. It evaluates the risk-benefit associated with their consumption using estimated weekly intake (EWI), permissible safety level (MeHgPSL), selenium health benefit value (HBVSe), and monthly consumption rate limit (CRmm) for each species. The results show that European Community limits for THg were surpassed in most samples, but none of the fish exceeded the limit for MeHg set by FAO/WHO. The study emphasizes the importance of monitoring THg and MeHg levels in fish, especially apex predators, to avoid overexposure for consumers.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Chemistry, Applied
Sidnei O. Souza, Dayara Virginia L. Avila, Victor Cerda, Rennan Geovanny O. Araujo
Summary: This study proposed a new method for inorganic selenium chemical speciation analysis, which was successfully applied to analyze eight beer samples produced in Spain. The method was found to be accurate, precise, and sensitive for determining selenium species in beer samples.
Article
Environmental Sciences
M. Ribeiro, N. Zephyr, J. A. L. Silva, M. Danion, T. Guerin, I Castanheira, A. Leufroy, P. Jitaru
Summary: The study found that MeHg bioaccumulates steadily in fish muscles when exposed individually, but the bioaccumulation is reduced when fish are first exposed to SeMet and then to MeHg, indicating a detoxifying effect of SeMet on MeHg.
Article
Environmental Sciences
Grazia Barone, Arianna Storelli, Daniela Meleleo, Angela Dambrosio, Rita Garofalo, Antonio Busco, Maria Maddalena Storelli
Summary: The study measured total mercury and methylmercury concentrations in various commercially important fish species and assessed the potential risks associated with them for children's health. The results suggested that selenium could alleviate the potential toxicity of mercury to a certain extent, and it was recommended that children should consume fish in moderation, especially swordfish and tunas.
Article
Environmental Sciences
P. J. Rudershausen, F. A. Cross, B. J. Runde, D. W. Evans, W. G. Cope, J. A. Buckel
Summary: Mercury in seafood poses a threat to human health as a neurotoxicant. Research on mercury concentrations in fish is important due to their consumption by humans and their role as indicators of environmental mercury levels. A study on Atlantic blue marlin found a decline in total mercury concentration in the 1990s compared to the 1970s, with relatively stable concentrations since then.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Analytical
Rong Rong, Zhaoqing Cai, Xiaoyan Li, Zheng Wang
Summary: A highly sensitive method for determining mercury was developed based on DC atmospheric pressure glow discharge and cold vapor generation, with the accuracy and practicality verified through experiments.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Chemistry, Applied
Muhammet Atasoy, Dilek Yildiz, Ibrahim Kula, Ali Imran Vaizogullar
Summary: A sensitive analytical technique was developed for the determination of methyl mercury and total mercury in fish tissue samples, achieving good results.
Article
Fisheries
Xinchi Shang, Qingsong Sun, Yuwei Yin, Yue Zhang, Peijun Zhang, Qiaohong Mao, Xi Chen, Huan Ma, Yuehong Li
Summary: Selenium-rich Bacillus subtilis is more effective than selenium-only group in reducing mercury accumulation in fish organs. The results suggest that administration of selenium-rich Bacillus subtilis has the potential to combat dietary mercury toxicity in common carp.
AQUACULTURE REPORTS
(2021)
Article
Environmental Sciences
Jacqueline R. Gerson, Rebecca Dorman, Collin Eagles-Smith, Emily S. Bernhardt, David Walters
Summary: Research shows that selenium exposure may reduce MeHg bioaccumulation and toxicity, but does not affect the MeHg concentration in diatoms under high MeHg treatment. Only in high MeHg treatment, the addition of SeMet leads to a decrease in mayfly MeHg concentrations and biomagnification factors. However, Se is toxic to mayflies, causing negative effects such as reduced escape behavior and prolonged metamorphosis time.
ENVIRONMENTAL POLLUTION
(2021)
Article
Food Science & Technology
Bruna Rosa da Silva Santos, Lucas Almir Cavalcante Minho, Emmanuelle Ferreira Requiao Silva, Maria Celeste da Silva Sauthier, Jamile da Cruz Caldas, Erik Galvao Paranhos da Silva, Debora de Andrade Santana, Walter Nei Lopes dos Santos
FOOD ANALYTICAL METHODS
(2020)
Article
Chemistry, Applied
Gisseli Souza Valasques, Ana Maria Pinto dos Santos, Daniel Levi FranCa da Silva, Uillian Mozart Ferreira da Mata Cerqueira, Sergio Luis Costa Ferreira, Walter Nei Lopes dos Santos, Marcos Almeida Bezerra
Article
Chemistry, Analytical
Barbara Elizabeth Alves de Magalhaes, Debora de Andrade Santana, Isaac Matheus de Jesus Silva, Lucas Almir Cavalcante Minho, Mayara Amariz Gomes, Jackson Roberto Guedes da Silva Almeida, Walter Nei Lopes dos Santos
MICROCHEMICAL JOURNAL
(2020)
Article
Chemistry, Analytical
Angelica F. Carneiro, Candice N. Carneiro, Federico J. V. Gomez, Adrian Spisso, Maria F. Silva, Lucas A. C. Minho, Walter N. L. dos Santos, Fabio de S. Dias
MICROCHEMICAL JOURNAL
(2020)
Editorial Material
Chemistry, Analytical
Sergio Luis Costa Ferreira, Ieda Spacino Scarminio, Alerandro C. Olivieri, Walter Nei Lopes dos Santos
MICROCHEMICAL JOURNAL
(2020)
Article
Chemistry, Applied
Hesrom Fernandes Serra Moura, Fernanda de Souza Dias, Laura Beatriz Souza e Souza, Barbara Elizabeth Alves de Magalhaes, Caroline de Aragao Tannus, Wellington Correia de Carvalho, Geovani Cardoso Brandao, Walter Nei Lopes dos Santos, Maria Gracas Andrade Korn, Daniele Cristina Muniz Batista dos Santos, Mariangela Vieira Lopes, Debora de Andrade Santana, Anibal de Freitas Santos Junior
Summary: This study evaluated the multielement/proximate composition of ten unconventional edible plants from Brazil, revealing their high content of minerals and bioactive compounds, particularly with high levels of elements like iron, magnesium, and phosphorus. Through principal component analysis and hierarchical clustering analysis, it was found that several plants were rich in minerals, while spearmint plant showed high levels of phenolic compounds such as transcinamic acid, kaempferol, and quercetin.
Article
Food Science & Technology
Gilvanda L. dos Anjos, Gisele C. Moreira, Candice N. Carneiro, Jamile da C. Caldas, Isaac M. de J. Silva, Walter N. L. dos Santos, Fabio de S. Dias
Summary: The use of statistical tools, combined with the optimization of ultrasound-assisted extraction processes, effectively extracts phenolic compounds from Capsicum frutescens samples, resulting in the determination of optimal operational conditions after experimental validation.
FOOD ANALYTICAL METHODS
(2021)
Article
Chemistry, Applied
Juscelia Pereira Santos Alves, Uillian Mozart Ferreira da Mata Cerqueira, Cleber Galvao Novaes, Walter Nei Lopes dos Santos, Sulene Alves Araujo, Marcos Almeida Bezerra
Summary: This study optimized an alkaline dissolution process with the assistance of ultrasound energy using TMAH to determine mineral elements in goat meat. The results showed that the proposed method provided accurate and stable results, with no significant differences compared to traditional digestion methods.
Article
Chemistry, Applied
Alexandre Gomes Marques de Freitas, Lucas Almir Cavalcante Minho, Barbara Elizabeth Alves de Magalhaes, Walter Nei Lopes Dos Santos, Leandro Soares Santos, Sergio Augusto de Albuquerque Fernandes
Summary: A method using FTIR was developed to detect tylosin residues in powdered milk, with chemometric analysis and the Boruta algorithm used to predict concentrations. The random forest method showed high accuracy in predicting low concentrations, with the model generated having a high correlation and determination coefficient for tylosin residues in milk. The proposed methodology proved to be efficient for investigating antibiotic residues in powdered milk.
Article
Chemistry, Applied
Emmanuelle Ferreira Requiao Silva, Bruna Rosa da Silva Santos, Lucas Almir Cavalcante Minho, Geovani Cardoso Brandao, Marcio de Jesus Silva, Mariangela Vieira Lopes Silva, Walter Nei Lopes dos Santos, Ana Maria Pinto dos Santos
Summary: This study evaluated the mineral composition, centesimal composition, and lead content in pine nut seeds from five Brazilian states. The results showed significant nutrient losses in cooked samples compared to raw samples.
Article
Biochemistry & Molecular Biology
Milene Dias Ferreira, Lourdes Cardoso de Souza Neta, Geovani Cardoso Brandao, Walter Nei Lopes dos Santos
Summary: This study evaluated the antimicrobial activity of silver nanoparticles synthesized from the aqueous extract of Schinus terebinthifolius Raddi leaves. The results showed that the silver nanoparticles had greater antimicrobial efficacy compared to the extract, inhibiting the growth of both bacteria and fungi.
BIOTECHNOLOGY AND APPLIED BIOCHEMISTRY
(2023)
Article
Chemistry, Applied
Mayara Amariz Gomes, Barbara Elizabeth Alves de Magalhaes, Walter Nei Lopes dos Santos, Jackson Roberto Guedes da Silva Almeida
Summary: This study evaluated the influence of seasonality on phytochemical composition, phenolic content, and antioxidant activity of Neoglaziovia variegata leaves. The results demonstrated a significant impact of seasonality on the antioxidant activity and phytochemical composition of the leaves of this species.
BIOINTERFACE RESEARCH IN APPLIED CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Robson M. de Jesus, Geovani C. Brandao, Walter N. L. dos Santos, Leila O. dos Santos, Jailson B. de Andrade
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2020)
Article
Multidisciplinary Sciences
Barbara E. A. De Magalhaes, Walter N. L. Dos Santos
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2020)
Article
Chemistry, Analytical
Meire Ane Pitta da Costa, Daniel Levi Franca da Silva, Fernanda de Souza Dias, Anibal de Freitas Santos Junior, Walter Nei Lopes dos Santos
ANALYTICAL METHODS
(2020)
Article
Chemistry, Applied
M. Graca Dias, Elsa Vasco, Francisco Ravasco, Lufsa Oliveira
Summary: This study estimated the vitamin D intake of "adults" and "elderly" populations in Portugal using the TDS methodology. The results showed that the majority of people had inadequate vitamin D intake, well below the Dietary Reference Values.
Article
Chemistry, Applied
Yanan Wang, Jiachen Shi, Yong-Jiang Xu, Chin-Ping Tan, Yuanfa Liu
Summary: This study investigates the variations in lipid digestion profiles among individuals of different ages using in vitro digestion models. The findings suggest that adults have a more comprehensive lipid digestion compared to infants, and infants tend to release shorter chain length and more saturated free fatty acids during digestion. Additionally, the particle sizes in the stomach of the elderly were consistently larger. This study enhances our understanding of how lipids with different degrees of unsaturation undergo digestion in diverse age groups.
Article
Chemistry, Applied
Hyunjong Yu, Huisu Kim, Pahn-Shick Chang
Summary: Chitosan-pectin emulsion-filled hydrogel (EFH) was developed to enhance the bioaccessibility of lipophilic bioactive compounds through intestinal delivery. The EFH, prepared without crosslinking agents, demonstrated improved mechanical strength and compactness with higher pectin concentration. It retained the emulsion at pH 2.0 and released it at pH 7.4, resulting in enhanced release of free fatty acids and improved bioaccessibility of curcumin.
Article
Chemistry, Applied
Tongze Zhang, Siqi Hong, Jia-Rong Zhang, Pin-He Liu, Siyi Li, Zixian Wen, Jianwei Xiao, Guirong Zhang, Olivier Habimana, Nagendra P. Shah, Zhongquan Sui, Harold Corke
Summary: Lactic acid fermentation significantly affects the morphology and physicochemical properties of proso millet starch, including the formation of surface indentations and small pores, decrease in gelatinization temperatures, and changes in hardness and adhesiveness.
Article
Chemistry, Applied
Liqin Kong, Feng Hong, Peng Luan, Yiping Chen, Yaoze Feng, Ming Zhu
Summary: This study presents a novel impedance biosensor using composite nanomaterials and T1R1 as a signal probe, which can competitively and ultra-sensitively detect umami intensity. The biosensor exhibits exceptional analytical performance and is suitable for food flavor evaluation.
Article
Chemistry, Applied
Kunying Lv, Yixin Yang, Qilong Li, Ran Chen, Liang Deng, Yiwei Zhang, Ning Jiang
Summary: Horse's milk, with its high nutritional value and low allergenic proteins, could be a substitute for cow's milk in infant consumption. A proteomic method was used to identify and compare milk fat globule membrane (MFGM) and whey proteins from different horse breeds. The study found differences in protein composition and functionality, which could support the development of formulas more suitable for human infants.
Article
Chemistry, Applied
Enrique Jacobo Diaz-Montana, Helene Brignot, Ramon Aparicio-Ruiz, Thierry Thomas- Danguin, Maria Teresa Morales
Summary: Sensory perception of virgin olive oil is influenced by phenols and volatiles, which are affected by the composition of the oil and biological factors. This study investigated the effect of saliva and phenols on the release of volatiles, and found that the presence of phenols decreased the release of saturated volatiles.
Article
Chemistry, Applied
Wei Zhou, Rui Zhang, Zhen Cai, Fangfang Wu, Yong Hu, Chao Huang, Kun Hu, Yun Chen
Summary: Environmentally friendly and outstanding pH-responsive cationic starch nanoparticles (CSNP) were prepared from pH-sensitive starch. CSNP exhibited nanosize and regular sphere, highly free-flowing molecular chains, and demonstrated excellent pH responsiveness through multiple emulsion/demulsification transitions.
Article
Chemistry, Applied
Andrea Koo, Vinayak Ghate, Weibiao Zhou
Summary: This study suggests that direct seeding may negatively affect the nutritional quality of crops, causing a decrease in ascorbic acid, vitamin K, and total glucosinolate content.
Article
Chemistry, Applied
Tonghao Du, Yazhou Xu, Xiaoyan Xu, Shijin Xiong, Linli Zhang, Biao Dong, Jinqing Huang, Tao Huang, Muyan Xiao, Tao Xiong, Mingyong Xie
Summary: This study successfully improved the ACE inhibitory activity of black sesame seeds by fermenting them with Lactobacillus Plantarum NCU116 and hydrolyzing them using acid protease. The RF-PSO model was used to predict the ACE inhibitory activity during the hydrolysis process. Eight peptides with ACE inhibitory activity were identified from fermented black sesame seed hydrolysates after separation and screening.
Article
Chemistry, Applied
Yao Liu, Songyi Lin, Kexin Liu, Shan Wang, Qiaozhen Liu, Na Sun
Summary: This study analyzed the structural changes of shrimp proteins during digestion, predicted the immunodominant epitopes, and validated their allergenicity. The results showed that shrimp proteins were degraded into peptides during digestion, but still carried IgE epitopes that trigger allergic reactions.
Article
Chemistry, Applied
Tiantian Fu, Hongwei Cao, Yu Zhang, Xiao Guan
Summary: This study investigates the impact of milling on the active components in rice, with a focus on the stability and bioaccessibility of phenols, VB1, and alpha-GABA during cooking and digestion. The findings show that milling exacerbates the instability of gamma-GABA during cooking and VB1 during digestion, and it affects the bioaccessibility of these active compounds.
Article
Chemistry, Applied
Zhihao Yang, Yanru Hou, Min Zhang, Puxin Hou, Chang Liu, Lu Dou, Xiaoyu Chen, Lihua Zhao, Lin Su, Ye Jin
Summary: This study investigated the molecular mechanism of feeding regimes on lamb flavor by using TMT labeling combined with MS. The results showed that pasture-fed groups had higher levels of amino acids and volatile flavor substances compared to concentrate-fed groups. Additionally, several differentially abundant proteins associated with lamb flavor were identified.
Article
Chemistry, Applied
Zixuan Xie, De Zhang, Junyu Zhu, Qianqian Luo, Jun Liu, Jingtao Zhou, Xiaoyong Wang, Yuqiong Chen, Zhi Yu, Dejiang Ni
Summary: This study investigated the acidification of aroma-enhanced black tea during storage. Analysis of non-volatile substances and organic acids using UPLC-Q-TOF/MS and HPLC revealed a decrease in soluble sugars and amino acids, while an increase in organic acids such as oxalic acid, malic acid, and quinic acid. In vitro experiments further demonstrated that the acidification is a result of the decomposition of sugars and amino acids by heating, as well as the oxidation of aromatic aldehydes. Additionally, the study showed that the taste composition of tea infusion is altered, with reduced amino acids, catechins, soluble sugars, and flavonoids. This research provides a theoretical basis for improving the quality of black tea.
Article
Chemistry, Applied
Lin Wang, Falai Ma, Zihan Li, Yan Zhang
Summary: This study developed time-temperature integrators based on amyloglucosidase@Cu3(PO4)2 nanoflowers for monitoring the freshness of chilled pork. The results showed that the integrators were highly reliable and accurate in predicting the quality of chilled pork.
