FOOD CHEMISTRY
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2024
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IF 8.5
Xueyu Nie,Dongyue Luo,Huifen Ma,Longyan Wang,Chao Yang,Xike Tian,Yulun Nie
Currently, planting selenium-rich crops using inorganic selenium such as selenate and selenite is used to address human selenium deficiency problems. In this paper, besides the above two traditional inorganic selenium speciation, we chose a new organic selenium speciation of potassium selenocyanoacetate to investigate the different effects of selenium speciation on selenium absorption, selenium transformation and cadmium antagonism via foliar application. Planting experiments showed that the selenium content of garlic bulbs treated with organic selenium was 1.8–3.9 times higher than that of inorganic selenium. Additionally, the absorption and transformation efficiency of organic selenium in garlic was also the highest, reaching over 95 %. Importantly, it was noteworthy that the cadmium content in bulbs treated with organic selenium was significantly lower than the Chinese food safety standard (0.2 mg/kg). Hence, this study provides an efficient organic selenium speciation which is beneficial to meet human selenium requirements and ensure safe utilization of cadmium-contaminated soils.
研究领域:
植物学
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环境科学
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营养学
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PubMed
高影响因子
Foods
·
2025
·Vol. 14
·期 11
·1851
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IF 5.1
Lin Yuan,Jianfeng Yuan,Chen Gao,Haoming Zhao,Chengye Wu,Zhong-Hua Yang
The microbial conversion of inorganic Se into bioactive organoselenium compounds represents a cutting-edge strategy for developing functional foods with enhanced nutritional value. This study introduces Lactiplantibacillus plantarum S1, a novel Se-enriched probiotic strain isolated from traditional Chinese sauerkraut, and systematically optimizes its capacity for selenite biotransformation. Critical fermentation parameters—including sodium selenite supplementation timing (2 μg/mL added at mid-log phase, 7 h post-inoculation), pH (5.0), and anaerobic cultivation duration (12 h)—were identified as key determinants of conversion efficiency. The optimized protocol achieved a 72.3% organoselenium conversion yield, producing 626.6 μg/g cellular organoselenium while maintaining probiotic viability (2.28 × 10 9 CFU/mL). Se speciation analysis demonstrated that 78.51% of intracellular Se existed in organic forms, with protein-bound Se constituting the predominant fraction (85.33%), followed by polysaccharide-associated (6.42%) and nucleic acid-linked (3.38%) species. The strain’s dual functionality as both an efficient Se bioconverter and a resilient probiotic carrier highlights its potential for nutraceutical applications. These findings not only establish a robust bioprocess for Se-enriched probiotic production but also reveal mechanistic insights into preferential Se incorporation into protein matrices. This work bridges microbial Se metabolism research with scalable functional food innovation, offering a sustainable platform for developing Se-fortified products with dual health benefits.
研究领域:
食品科学
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微生物学
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营养学
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Jing Li,Chen Yuan,Huiting Xu,Huibin Liu,Junjie Qi,Zhaohua Jiang,Sai Dong,Rongyu Guo,Zhijie Cui,Wenchao Peng,Jiapeng Liu
Conversion-type aqueous copper-selenium (Cu-Se) batteries have gained considerable attention due to their high theoretical capacity, safety and environmental friendliness. However, the multi-electron intermediate conversion reaction of selenium cathode generally possesses sluggish kinetics, which seriously impedes the further development of Cu-Se batteries. Herein, the porous V 2 C@VSe 2 heterostructure (P-V 2 C@VSe 2 ) with built-in electric field (BIEF) were successfully synthesized by the sacrificial template method and in situ selenization strategy, which were used as the selenium host materials for aqueous Cu-Se batteries to effectively enhance the selenium conversion reaction kinetics. The porous structure of P-V 2 C@VSe 2 not only provides faster access for the transport of polyselenide intermediates during electrochemical reactions, but also exposes more catalytic active sites, which in turn improves the catalytic activity of the material. In addition, the built-in electric field generates at the interface of the P-V 2 C@VSe 2 heterostructure facilitates the acceleration of charge transfer and thus improves the kinetics of the redox reaction of selenium. Benefiting from the synergistic effect of the porous structure and the built-in electric field, the Se/P-V 2 C@VSe 2 cathode possessed a discharge specific capacity of 1182.2 mAh g −1 at a current density of 1 A g −1 , which was much higher than those of Se/P-V 2 C (796.6 mAh g −1 ) and Se (597.0 mAh g −1 ) cathodes. In addition, it also maintained a specific capacity of 1054.6 mAh g −1 after 6000 cycles at 10 A g −1 , demonstrating excellent cycling stability. Meanwhile, a series of characterizations and density functional theory calculations were performed to systematically explore the conversion mechanism of aqueous Cu-Se batteries. This work provides promising insights into the construction of high-performance MXene-based catalytic host materials for aqueous Cu-Se batteries.
研究领域:
材料科学
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电化学
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LWT-FOOD SCIENCE AND TECHNOLOGY
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2025
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IF 6.6
Kexin Wang,Wenqi Zhao,Hongxuan Zhao,Jing Xu,Sisi Gao,Shuang-kui Du,Xiaoli Gao
Selenium (Se) fortification is essential for meeting nutritional requirements and preventing Se deficiency-related diseases. This study evaluated the effects of sodium selenite (Na 2 SeO 3 ) and selenomethionine (SeMet) on mung bean sprouts (MBS) by investigating Se accumulation, distribution, and protein physicochemical properties. The findings indicated that the Se accumulation efficiency of SeMet treatment was 3.22 times that of Na 2 SeO 3 treatment. Furthermore, both treatments achieved an organic Se conversion rate exceeding 95%. Distribution analysis revealed that 72.39% to 78.50% of organic Se was incorporated into proteins, while 6.28% to 6.93% was bound to polysaccharides. The order of organic Se accumulation in protein components was albumin > glutelin > globulin > prolamin. Additionally, Se enrichment enhanced Se accumulation in low molecular weight protein (25-33 kDa) and promoted protein synthesis, but decreased the cysteine and methionine content. These changes led to an increase in β-turn, disulfide bonds, and surface hydrophobicity, while reducing the accessibility of sulfhydryl and pigment groups. Consequently, the oil absorption capacity and foaming capacity of the protein were enhanced. The results provide a foundation for the utilization of Se-enriched MBS protein as a functional food ingredient.
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高影响因子
Foods
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2025
·Vol. 14
·期 18
·3249
·
IF 5.1
Moyu Zhong,Xinxin Huang,Xinyue Zhang,Zahid Hussain,Zhaohui Zan,Qi Wang,Xiulan Xie,Maozhi Ren
Hidden starvation poses a critical threat to people’s nutritional status and overall health. Developing functional agriculture can alleviate hidden starvation. This study investigates organic selenium supplementation challenges and the antioxidant potential of high-value astaxanthin. The microalgal strainDysmorphococcus globosusHY13 was cultured in medium containing sodium selenite, and the effects of different sodium selenite concentrations on the growth of HY13 were analyzed. Color change was the most obvious when the medium was supplemented with 1500 mg L−1selenite, with samples showing an orange-red color. The conversion efficiency of inorganic selenium to organic selenium reached 99.23%. Similarly, under selenium stress conditions, the HY13 strain accumulated high levels of astaxanthin (up to 0.86 mg g−1dry weight). Thus,D. globosusappears to efficiently convert inorganic selenium into organic selenium and synergistically accumulate high-value astaxanthin under selenium stress, emphasizing its potential applications in functional agriculture and nutritionally fortified product development.
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Frontiers in Nutrition
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2020
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IF 3.365
Chen Xujun,Li Shuyi,Cong Xin,Yu Tian,Zhu Zhenzhou,Barba Francisco J.,Marszalek Krystian,Puchalski Czesław,Cheng Shuiyuan
Selenium is an essential trace element and micronutrient for human health. Application of organic selenium in plants and microorganisms as trace element supplement is attracting more and more attention. In this study, Bacillus cereus, an important probiotic, was used for selenium enrichment with sodium selenite as selenium source. The growth curve of B. cereus was investigated, and 150 μg/ml was selected as the concentration of selenium for B. cereus fermentation. With application of response surface methodology, the optimal fermentation conditions were obtained as follows: inoculation quantity of 7%, culture temperature of 33°C, and shaking speed of 170 rpm, leading to the maximal selenium conversion ratio of 94.3 ± 0.2%. Field emission scanning electron microscope and energy dispersive spectrometry evidenced that inorganic selenium had been successfully transformed. This study may contribute to get a strain with high Se conversion ratio, so as to extract organic selenium in the form of selenoprotein to be used for further application.
研究领域:
微生物学
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营养科学
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生物技术
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高影响因子
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