<i>Lactiplantibacillus plantarum</i> S1 as a Novel Dual-Functional Probiotic Strain for High-Efficiency Organoselenium Biotransformation in Functional Food Development
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 <i>Lactiplantibacillus plantarum</i> S1, a novel Se-enriched probiotic strain isolate...
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2025-05-01
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| author | Lin Yuan Jianfeng Yuan Chen Gao Haoming Zhao Chengye Wu Zhong-Hua Yang |
| author_facet | Lin Yuan Jianfeng Yuan Chen Gao Haoming Zhao Chengye Wu Zhong-Hua Yang |
| author_sort | Lin Yuan |
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| description | 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 <i>Lactiplantibacillus plantarum</i> 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<sup>9</sup> 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. |
| format | Article |
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| institution | Kabale University |
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| language | English |
| publishDate | 2025-05-01 |
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| spelling | doaj-art-8ef204a0eefd4d55960178e45b053ef72025-08-20T03:46:50ZengMDPI AGFoods2304-81582025-05-011411185110.3390/foods14111851<i>Lactiplantibacillus plantarum</i> S1 as a Novel Dual-Functional Probiotic Strain for High-Efficiency Organoselenium Biotransformation in Functional Food DevelopmentLin Yuan0Jianfeng Yuan1Chen Gao2Haoming Zhao3Chengye Wu4Zhong-Hua Yang5Xingzhi College, Zhejiang Normal University, Jinhua 321100, ChinaXingzhi College, Zhejiang Normal University, Jinhua 321100, ChinaCollege of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, ChinaXingzhi College, Zhejiang Normal University, Jinhua 321100, ChinaXingzhi College, Zhejiang Normal University, Jinhua 321100, ChinaXingzhi College, Zhejiang Normal University, Jinhua 321100, ChinaThe 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 <i>Lactiplantibacillus plantarum</i> 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<sup>9</sup> 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.https://www.mdpi.com/2304-8158/14/11/1851<i>Lactiplantibacillus plantarum</i>organoseleniumse-enriched probioticbiotransformation |
| spellingShingle | Lin Yuan Jianfeng Yuan Chen Gao Haoming Zhao Chengye Wu Zhong-Hua Yang <i>Lactiplantibacillus plantarum</i> S1 as a Novel Dual-Functional Probiotic Strain for High-Efficiency Organoselenium Biotransformation in Functional Food Development Foods <i>Lactiplantibacillus plantarum</i> organoselenium se-enriched probiotic biotransformation |
| title | <i>Lactiplantibacillus plantarum</i> S1 as a Novel Dual-Functional Probiotic Strain for High-Efficiency Organoselenium Biotransformation in Functional Food Development |
| title_full | <i>Lactiplantibacillus plantarum</i> S1 as a Novel Dual-Functional Probiotic Strain for High-Efficiency Organoselenium Biotransformation in Functional Food Development |
| title_fullStr | <i>Lactiplantibacillus plantarum</i> S1 as a Novel Dual-Functional Probiotic Strain for High-Efficiency Organoselenium Biotransformation in Functional Food Development |
| title_full_unstemmed | <i>Lactiplantibacillus plantarum</i> S1 as a Novel Dual-Functional Probiotic Strain for High-Efficiency Organoselenium Biotransformation in Functional Food Development |
| title_short | <i>Lactiplantibacillus plantarum</i> S1 as a Novel Dual-Functional Probiotic Strain for High-Efficiency Organoselenium Biotransformation in Functional Food Development |
| title_sort | i lactiplantibacillus plantarum i s1 as a novel dual functional probiotic strain for high efficiency organoselenium biotransformation in functional food development |
| topic | <i>Lactiplantibacillus plantarum</i> organoselenium se-enriched probiotic biotransformation |
| url | https://www.mdpi.com/2304-8158/14/11/1851 |
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