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Zhan JP, Qi M, Wang C, Wang XF, Wang HZ, Dun XL. Precise Determination of Selenium Forms and Contents in Selenium-Enriched Rapeseed Seedlings and Flowering Stalks by HPLC-ICP-MS. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024. [PMID: 38602484 DOI: 10.1021/acs.jafc.3c08416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
Rapeseed (Brassica napus L.) has the ability of selenium (Se) enrichment. Identification of selenides in Se-rich rapeseed products will promote the development and utilization of high value. By optimizing the Se species extraction process (protease type, extraction reagent, enzyme sample ratio, extraction time, etc.) and chromatographic column, an efficient, stable, and accurate method was established for the identification of Se species and content in rapeseed seedlings and flowering stalks, which were cultured by inorganic Se hydroponics. Five Se compounds, including selenocystine (SeCys2), methylselenocysteine (MeSeCys), selenomethionine (SeMet), selenite (SeIV), and selenate (SeVI) were qualitatively and quantitatively identified. Organoselenium was absolutely dominant in both seedlings and flowering stalks among the detected rapeseed varieties, with 64.18-90.20% and 94.38-98.47%, respectively. Further, MeSeCys, a highly active selenide, predominated in rapeseed flowering stalks with a proportion of 56.36-72.93% and a content of 1707.3-5030.3 μg/kg. This study provides a new source of MeSeCys supplementation for human Se fortification.
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Affiliation(s)
- Jie-Peng Zhan
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
| | - Meng Qi
- AnKang Research and Development Center for Selenium-enriched Products/Key Laboratory of Se-enriched Products Development and Quality Control, Ministry of Agriculture and Rural Affairs, Xian 710000, China
| | - Chao Wang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
| | - Xin-Fa Wang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
| | - Han-Zhong Wang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
| | - Xiao-Ling Dun
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
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Aimaitiniyazi M, Muhammad T, Yasen A, Abula S, Dolkun A, Tursun Z. Determination of Selenium in Selenium-Enriched Products by Specific Ratiometric Fluorescence. SENSORS (BASEL, SWITZERLAND) 2023; 23:9187. [PMID: 38005573 PMCID: PMC10674224 DOI: 10.3390/s23229187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 10/26/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023]
Abstract
Selenium (Se), as one of the essential and nutrient components of living organisms and plants, plays an important role in life activities, while excessive selenium is hazardous to human health. So, the establishment of an effective method for simple, rapid, and highly sensitive determination of selenium content is crucial in the field of food composition analysis and other areas. In this paper, a novel and simple ratiometric fluorescence method for the determination of Se has been developed using 9-anthracenemethanol (AM) as the ratiometric fluorescence reagent on the basis of the conventional fluorometric assay which utilized 2,3-diaminonapthalene (DAN) as fluorescent ligand. The ratiometric method was compared with the conventional method with respect to precision and accuracy. The inter-day and intra-day precisions (RSDs) of the ratiometric fluorescence method ranged from 2.08 to 2.78% and 1.28 to 1.84%, with mean recoveries of 93.2~98.0% and limit of detection (LOD) and limit of quantification (LOQ) of 0.0016 and 0.0049 μg/mL, respectively. This method was successfully applied to the determination of total selenium in selenium-enriched milk and selenium-supplemented shampoo, with the results in agreement with those obtained by inductively coupled plasma mass spectrometer (ICP-MS). The results demonstrated that the precision and accuracy of the ratiometric fluorescence method were superior to those of the conventional fluorescence method, and the interferences of various environmental factors were effectively eliminated. The precision and accuracy of the conventional method can be significantly improved by simply adding an elaborately selected ratiometric fluorescence reagent, and the new method will have broader practical applications.
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Affiliation(s)
- Munire Aimaitiniyazi
- State Key Laboratory of Chemistry and Utilization of Carbon-Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China; (M.A.); (A.D.); (Z.T.)
| | - Turghun Muhammad
- State Key Laboratory of Chemistry and Utilization of Carbon-Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China; (M.A.); (A.D.); (Z.T.)
| | - Ayzukram Yasen
- Key Lab of Natural Product Chemistry and Application, School of Chemistry and Chemical Engineering, Yili Normal University, Yining 835000, China;
| | - Sainawaer Abula
- School of Safety Science and Engineering, Xinjiang Engineering Institute, Urumqi 830023, China;
| | - Almire Dolkun
- State Key Laboratory of Chemistry and Utilization of Carbon-Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China; (M.A.); (A.D.); (Z.T.)
| | - Zulhumar Tursun
- State Key Laboratory of Chemistry and Utilization of Carbon-Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China; (M.A.); (A.D.); (Z.T.)
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Zhang L, Ning J, Liu G, Tong L, Gan Y, Li C, Yang W, Pi K. Mechanisms of changing speciation and bioavailability of selenium in agricultural mollisols of northern cold regions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 858:159897. [PMID: 36336061 DOI: 10.1016/j.scitotenv.2022.159897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 10/07/2022] [Accepted: 10/29/2022] [Indexed: 06/16/2023]
Abstract
The distribution, speciation, and bioavailability of selenium (Se) - an essential micronutrient for human beings - in agricultural soils influence the resource recovery of agricultural benefits and the sustainable use of Se in agroecosystems. Quantitative understanding in this regard however remains limited in the world's mollisol agroecosystems, despite their critical importance in securing global food supply. Herein, a systematic investigation of Se in the river sediment-irrigation water-mollisols-rhizosphere-rice seeds continuum, at the core zone of the northern mollisol regions, was conducted to elucidate the hydrological-hydrogeochemical processes and mechanisms responsible for the distribution and bioavailability of Se. The content of total Se in the mollisols ranged between 0.12 and 0.54 mg/kg with an average of 0.31 mg/kg. At the riverside flood plains, humic-acid bound Se accounted on average for 39 % of total Se. This pool of Se can be transformed to water-soluble and ion-exchangeable Se(VI), supporting a higher potential of Se bioavailability at riparian agricultural mollisols. For mollisol lands far from the river channels, the topography affects the speciation and partitioning of Se presumably through regulating water retention and organic matter transport. Moreover, altering pH and redox conditions in response to irrigation with the river water may boost Se bioavailability in weakly acidic and high Eh mollisols. It can be in part ascribed to the transformation of organic-bound Se along with infiltrated oxygenated water that leads to the increase of water-soluble and ion-exchangeable Se. These findings reinforce that hydrological-hydrogeochemical perturbations due to irrigation with surface water need to be assessed carefully in the management of Se resources in the mollisol agroecosystems.
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Affiliation(s)
- Li Zhang
- Key Laboratory of Black Soil Evolution and Ecological Effect, Ministry of Natural Resources, 110034 Shenyang, China; Natural Resources Survey Institute of Heilongjiang Province, 150036 Harbin, China; Key Laboratory of Black Soil and Water Resources Research of Heilongjiang Province, 150036 Harbin, China
| | - Junna Ning
- School of Environmental Studies & State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, 430074 Wuhan, China
| | - Guodong Liu
- Key Laboratory of Black Soil Evolution and Ecological Effect, Ministry of Natural Resources, 110034 Shenyang, China; Shenyang Center of Geological Survey, China Geological Survey, 110034 Shenyang, China
| | - Lei Tong
- Key Laboratory of Black Soil and Water Resources Research of Heilongjiang Province, 150036 Harbin, China; School of Environmental Studies & State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, 430074 Wuhan, China
| | - Yiqun Gan
- Key Laboratory of Black Soil and Water Resources Research of Heilongjiang Province, 150036 Harbin, China; School of Environmental Studies & State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, 430074 Wuhan, China
| | - Chenglu Li
- Natural Resources Survey Institute of Heilongjiang Province, 150036 Harbin, China; Key Laboratory of Black Soil and Water Resources Research of Heilongjiang Province, 150036 Harbin, China
| | - Wenpeng Yang
- Natural Resources Survey Institute of Heilongjiang Province, 150036 Harbin, China; Key Laboratory of Black Soil and Water Resources Research of Heilongjiang Province, 150036 Harbin, China
| | - Kunfu Pi
- Key Laboratory of Black Soil and Water Resources Research of Heilongjiang Province, 150036 Harbin, China; School of Environmental Studies & State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, 430074 Wuhan, China.
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Yang J, Chen Y, Shi K, Hu K, Li R, Gao X, Wang Q, Zhang W, Zhou Y, Wang Y, He J, Liu T, Hou X. Stability of selenium and its speciation analysis in water using automatic system separation and HR-ICP-MS measurement. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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