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Screening and Functional Characterization of Lactic Acid Bacteria for Alleviating Hyperuricemia in the Intestine of Trachemys scripta elegans
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Siyu LIU1, Rongping BU2, Jiaming HUANG1, Yuhao LIAO2, Ping SHI1, *, Yuansen LIU1, *
Science and Technology of Food Industry | 2026, 47(6) : 171 - 180
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Science and Technology of Food Industry | 2026, 47(6): 171-180
• Bioengineering •
Screening and Functional Characterization of Lactic Acid Bacteria for Alleviating Hyperuricemia in the Intestine of Trachemys scripta elegans
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Siyu LIU1, Rongping BU2, Jiaming HUANG1, Yuhao LIAO2, Ping SHI1, *, Yuansen LIU1, *
Affiliations
  • 1Laboratory of Beibu Gulf Marine Product Healthy Aquaculture and Green Processing, Guangxi Zhuang Autonomous Region Engineering Research Center of Marine Food Nutrition and Processing Technology Innovation, Guangxi College and University Key Laboratory of High-value Utilization of Seafood and Prepared Food in Beibu Gulf, College of Food Engineering, Beibu Gulf University, Qinzhou 535011, China
  • 2College of Marine Science, Beibu Gulf University, Qinzhou 535011, China
Published: 2026-03-15 doi: 10.13386/j.issn1002-0306.2025030414
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This study aimed to screen lactic acid bacteria (LAB) with uric acid-regulating potential from the gut microbiota of Trachemys scripta elegans and systematically evaluate their functional characteristics. The selective culture medium with uric acid as the sole carbon and nitrogen source was established for primary screening, combined with in vitro uric acid (UA) degradation activity test and xanthine oxidase (XOD) inhibition experiment for secondary screening. Finally, two dominant strains were identified by 16S rDNA sequencing, and their functional characteristics were characterized. Results demonstrated that strains Enterococcus hirae YL-3 and Enterococcus durans YL-8 exhibited UA degradation rates of 83.83% and 85.48%, respectively, along with XOD inhibition rates of 71.72% and 65.79%, indicating significant hypouricemic potential. Additionally, strain YL-3 exhibited excellent fermentation and probiotic characteristics. In media with 6% NaCl, it achieved an OD600 of 0.76, outperforming the blank group's 0.55 (P<0.05). It also showed a survival rate of 75.46% under pH3.0 conditions and 99.53% in the presence of 0.3% bile salts; Its autoaggregation rate was 89.38%. Strain YL-8 demonstrated strong antioxidant activity, with its fermentation supernatant achieving DPPH·, ABTS+·, and ·OH scavenging rates of 60.22%, 93.66%, and 99.25%, respectively. In this study, LAB with high uric acid degradation ability and xanthine oxidase activity were isolated from the intestine of Trachemys scripta elegans for the first time, which provided theoretical basis for developing probiotic preparation to alleviate hyperuricemia.

Trachemys scripta elegans  /  lactic acid bacteria  /  uric acid degradation  /  xanthine oxidase  /  probiotic characteristics
刘思雨, 卜荣平, 黄家铭, 廖宇浩, 时萍, 刘远森. 红耳龟肠道缓解高尿酸血症的乳酸菌筛选及其功能特性研究. 食品工业科技, 2026 , 47 (6) : 171 -180 . DOI: 10.13386/j.issn1002-0306.2025030414
Siyu LIU, Rongping BU, Jiaming HUANG, Yuhao LIAO, Ping SHI, Yuansen LIU. Screening and Functional Characterization of Lactic Acid Bacteria for Alleviating Hyperuricemia in the Intestine of Trachemys scripta elegans[J]. Science and Technology of Food Industry, 2026 , 47 (6) : 171 -180 . DOI: 10.13386/j.issn1002-0306.2025030414
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Year 2026 volume 47 Issue 6
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doi: 10.13386/j.issn1002-0306.2025030414
  • Receive Date：2025-04-01
  • Online Date：2026-10-24
  • Published：2026-03-15
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  • Received：2025-04-01
Affiliations
    1Laboratory of Beibu Gulf Marine Product Healthy Aquaculture and Green Processing, Guangxi Zhuang Autonomous Region Engineering Research Center of Marine Food Nutrition and Processing Technology Innovation, Guangxi College and University Key Laboratory of High-value Utilization of Seafood and Prepared Food in Beibu Gulf, College of Food Engineering, Beibu Gulf University, Qinzhou 535011, China
    2College of Marine Science, Beibu Gulf University, Qinzhou 535011, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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