Evidence map›Paper›PMID 32705453›Full record

ArticleBiotechnology letters2020

Food-grade expression of nattokinase in Lactobacillus delbrueckii subsp. bulgaricus and its thrombolytic activity in vitro.

Chen Li, Zaihui Du, Shaoqing Qi, Xin Zhang, Miaoshu Wang, Yangping Zhou, Haiqiang Lu, Xinxi Gu, Hongtao Tian

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Article in Biotechnology letters, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
2.5field-weighted citation impact, top 11% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 22 citations in OpenAlex.

  1. Article
  2. Enhanced nattokinase production byFrontiers in microbiology · 2025
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  5. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 1 institution in 1 country.

Chen Li *College of Food Science and Technology, Agricultural University of Hebei, Baoding, China.
Zaihui Du *College of Food Science and Technology, Agricultural University of Hebei, Baoding, China.
Shaoqing Qi *College of Food Science and Technology, Agricultural University of Hebei, Baoding, China.
Xin ZhangCollege of Food Science and Technology, Agricultural University of Hebei, Baoding, China.
Miaoshu WangNew Hope Tensun (Hebei) Dairy Co., Ltd, Baoding, China.
Yangping ZhouCollege of Food Science and Technology, Agricultural University of Hebei, Baoding, China.
Haiqiang LuCollege of Food Science and Technology, Agricultural University of Hebei, Baoding, China.
Xinxi GuCollege of Food Science and Technology, Agricultural University of Hebei, Baoding, China.
Hongtao TianCollege of Food Science and Technology, Agricultural University of Hebei, Baoding, China. tht631022@163.com.ORCID http://orcid.org/0000-0002-3079-0125
Hebei Agricultural University · CN

Funding

Chinese High Technology Program(863) 2006AA10Z317National Natural Science Foundation of China 31301520Natural Science Foundation of Hebei Province C2017204094Natural Science Foundation of Heibei Province C2016204129
6 · The paper itself

Abstract

objectivesTo produce nattokinase in a food-grade expression system and evaluate its thrombolytic activity in vitro.

resultsNo nattokinase activity from reconstituted strains was observed in simulated gastric juice, but the enzyme was stable in intestinal fluid, the relative activity of which was found to be 60% after 4 h. Due to the nattokinase being produced intracellularly by recombinant bacterial strains, the persistence of the bacteria in gastric juice ensured transmission of the nattokinase into intestinal juice. Because of subsequent disintegration of the bacteria, the highest nattokinase activity was observed after 3 h at approximately 32%, following its carriage within the recombinant strains to the intestinal fluid.

conclusionsThis study demonstrated that nattokinase from recombinant strains exhibited good thrombolytic activity in vitro and may be used by the dairy fermentation industry for the development of novel thrombolytic functional foods.

Indexed as

AnimalsBacillus subtilisBacterial ProteinsDairyingEnzyme StabilityFibrinolytic AgentsFood MicrobiologyFunctional FoodGene ExpressionIntestinal SecretionsLactobacillus delbrueckiiProtein EngineeringRecombinant ProteinsSubtilisinsSwineTransformation, BacterialBacterial ProteinsFibrinolytic AgentsnattokinaseRecombinant ProteinsSubtilisinsFood-grade expressionIn vitroLactobacillus delbrueckii subsp. bulgaricus thyA-deficient strainNattokinaseThrombolytic

Identifiers

PMID32705453
OpenAlexW3044004106

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.