Publications by authors named "YaHong Yuan"

Given the growing interest in dairy-free milk analog products, new and diversified alternatives are pivotal to push the market forward. Germination and fermentation are traditional processing technologies used in plant-based milk production. However, the combination of both has not been extensively investigated.

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This work introduces a fluorometric/electrical dual-biosensing logic system based on a DNA reaction network (DRN). This system was used to spatiotemporally modulate the kinetic behavior of DNA nanostructures. The system, acting as a programmable and modulative central controller introduced to implement, enabled the monitoring of the target gliotoxin.

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Deoxynivalenol (DON) contamination in cereals is a widespread issue with global implications, necessitating the development of efficient detection methods. Here, a fluorescent aptasensor integrating target-responsive DNA three-way junction (TWJ) and DNA walking machine was developed to detect DON. The DON-specific aptamer (Apt) and the walker (Walker DNA) are integrated into TWJs.

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To investigate the microbial diversities and dynamic quality properties of kombucha, the successional changes with different periods from four regions were comprehensively characterized and compared. A total of 197 indigenous yeast and bacterial strains were isolated, involving Gluconobacter, Komagataeibacter, Starmerella and Zygosaccharomyces spp. The successional dynamics of the kombucha communities in different regions were evaluated.

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The contamination of apple juice by Alicyclobacillus acidoterrestris (A. acidoterrestris) can cause significant economic losses. Therefore, developing a rapid and sensitive method for detecting A.

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Fermented fruits and vegetables are rich in phenolic compounds, minerals, and vitamins, which have potential health benefits for the prevention of many diseases such as cardiovascular disease and Type 2 diabetes. There is a growing demand for the development of nondairy probiotic products based on fruits and vegetables in view of changing lifestyles (e.g.

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Rapid monitoring of total and organic selenium content in kefir grain was essential for microbial screening and selenium-enriched food development. Firstly, spectral information of selenium-enriched kefir grain was obtained using an attenuated total reflection Fourier transform infrared spectrometer. Secondly, the performance of the quantitative prediction models established by the four-variable screening method with three machine learning algorithms, respectively, was compared.

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Epsilon-poly-lysine (EPL) is widely used in food preservatives. However, EPL can react with components in food substrates, resulting in the formation of precipitates that reduce its antimicrobial properties. Nanoencapsulation is a promising technique and represents a novel approach to enhance EPL activity.

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KYS-164, isolated from homemade Tibetan kefir grains, produces bacteriocin-like inhibitory substances (BLIS), which are peptides with antimicrobial properties, but have not been fully characterized. The research on BLIS will lay the foundation for mining new bacteriocins. In this study, the optimal culture conditions for the production of highly active BLIS were found to be incubation at 30 °C and 120 rpm, and the most effective extraction method was ammonium sulfate precipitation (ASP) using ammonium sulfate at 80% saturation.

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Penicillium expansum (P. expansum), a widespread fungal pathogen, causes serious economic loss and public health concerns. The aim of this research is to investigate the antifungal effect of Kluyveromyces marxianus YG-4 (K.

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Insufficient selenium intake can lead to serious health problems. However, most research on the functional properties of selenium-enriched probiotics has focused on sub-health conditions or disease models, with limited studies involving healthy subjects. Additionally, previous research has primarily explored the direct effects of selenium itself, neglecting its influence on gut microbiota and metabolism.

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Inflammatory bowel disease (IBD) poses persistent challenges due to its chronic and recurrent nature, exacerbated by the unsatisfactory outcomes of the traditional treatment approaches. In this study, we developed a dietary supplement, selenium-enriched (SeY), to alleviate dextran sulfate sodium-induced colitis in mice. The newly developed functional food shows dual-functional activity, acting both as a probiotic and a reliable source of organic selenium.

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  • Foodborne pathogens are a significant health threat, and this study focuses on improving the antimicrobial properties of low-dose silver nanoparticles (AgNPs) to preserve green grapes.
  • A new delivery system using covalent organic frameworks (COFs) with AgNPs was created to enhance their effectiveness.
  • The findings showed that the minimum concentration needed to inhibit bacteria was 10 μg/mL, with a bacteriostatic rate between 94.01% and 98.77%, indicating potential for food packaging and preservation applications.
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  • Acute alcoholic liver injury (AALI) can lead to severe liver conditions and has limited treatment options with potential side effects.
  • This study explored the structure and protective effects of natural lentinan (LNT), a polysaccharide from the Qinba Mountain area, across different doses (100 mg/kg, 200 mg/kg, 400 mg/kg) in a mouse model of AALI.
  • Results showed that LNT improved liver function, reduced inflammation and oxidative stress, and promoted beneficial gut bacteria, suggesting that its protective effects against AALI are linked to the dose and the stimulation of probiotics.
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  • * A total of 634 nonvolatile and 83 volatile metabolites were identified, with 226 and 54 showing significant differences between the fermentation phases, respectively.
  • * Key metabolites linked to flavor development were aspartic acid, phenylalanine, and purine metabolism, while pressure fermentation enhanced certain compounds like apigenin and thiamine in the final cider.
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  • Patulin (PAT) is a harmful toxin found in food that can cause significant intestinal damage, prompting researchers to explore ways to reduce its effects.* -
  • Mice in the study were given apple polyphenols (AP) in their water for eight weeks before being exposed to PAT, which resulted in reduced intestinal injury and better gut health.* -
  • The findings suggest that AP not only protects against PAT-induced damage by improving gut microbiota and metabolic functions but also highlights its potential as a preventive measure against foodborne toxins.*
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  • Probiotics and polyphenols can work well together in microcapsules, but creating these co-encapsulated microcapsules (CM) faces challenges like complicated processing and unclear health effects.
  • The study developed two types of co-microencapsulations using different polysaccharides, which effectively protected probiotics and improved the encapsulation of polyphenols.
  • Results showed that WGCA@LK maintained high probiotic viability after harsh conditions, while WGCF@LK exhibited strong antioxidant activity, enhanced probiotic growth, and demonstrated anti-inflammatory benefits in mice, highlighting their potential for health food development.
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  • Depression is a widespread issue, often treated with drugs that come with side effects; however, probiotics and goat milk, particularly Tibetan kefir, are being explored for their ability to improve mental health and immune function.
  • In experiments with mice facing chronic mild stress, Tibetan kefir significantly reduced signs of despair and inflammation, impacting the neuroendocrine system positively.
  • The findings suggest that Tibetan kefir can help restore gut microbiota and may serve as a promising dietary addition for people dealing with depression, revealing potential underlying mechanisms for its benefits.
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C1R has been identified to have a distinct function in cutaneous squamous cell carcinoma that goes beyond its role in the complement system. However, it is currently unknown whether C1R is involved in the progression of hepatocellular carcinoma (HCC). HCC tissues were used to examine C1R expression in relation to clinical and pathological factors.

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Trimethylamine-n-oxide (TMAO) is a metabolite of intestinal flora following the consumption of phosphatidylcholine-rich foods. Clinical cohort studies have shown that plasma TMAO may be a risk factor for cancer development, including hepatocellular carcinoma (HCC), but fundamental research data supporting this hypothesis are lacking. In this study, HCC cells were treated with TMAO in vivo and in vitro to evaluate the effect on some indicators related to the malignancy degree of HCC, and the relevant molecular mechanisms were explored.

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  • Lactic acid bacteria (LAB) can transform inorganic selenium into less toxic and more bioavailable forms, but detailed studies on selenium-enriched LAB are missing.
  • In this research, the strain Limosilactobacillus fermentum Ln-9 was modified and showed a selenium accumulation that was 3.03 times higher than the original strain, with optimal conditions yielding 12.16 mg/g of selenium, mostly in the form of nanoparticles.
  • The study found that selenium nanoparticles were primarily found outside the cell, while other selenium compounds were located in various cell fractions, and highlighted Ln-9's potential for use in the food industry due to its favorable characteristics and antioxidant properties.
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  • Cold plasma treatment has been studied as an effective method to inactivate the spores of Alicyclobacillus acidoterrestris, a bacterium that resists traditional pasteurization and poses a risk in the fruit juice industry.
  • The research showed that longer treatment times and higher voltages improve inactivation rates, with a notable morphologic and structural damage to the spores observed through electron microscopy.
  • The study concluded that cold plasma combined with certain reactive species, particularly oxygen, plays a crucial role in directly destroying the spores, achieving comparable inactivation results to traditional heating methods.
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  • * This study found that 95% of the Se absorbed by K. unispora was converted into organic selenium, with significant portions bound to proteins (46.17%) and polysaccharides (16.78%).
  • * K. unispora also metabolized organic Se into compounds like selenomethionine (30.26%) and selenocystine (3.02%), revealing new potential for selenium enrichment in yeast species.
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  • Alicyclobacillus bacteria are problematic in the beverage industry due to their ability to survive typical pasteurization methods, leading to quality issues related to odor and taste, while their health effects on humans are not clearly defined.
  • An experimental study was conducted using cell cultures and rodent models to assess the safety of various strains of Alicyclobacillus, focusing on their impacts on intestinal cells and potential cytotoxicity.
  • Results indicated that Alicyclobacillus spp. showed negligible cytotoxicity and minimal safety concerns, suggesting they are biocompatible in the tested models.
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  • A study evaluated the effectiveness of edible coatings made from sodium alginate and different lactic acid bacteria strains to improve the shelf life and safety of strawberries.
  • The coatings significantly reduced strawberry weight loss, decay, and vitamin C degradation, while also lowering fungal growth compared to untreated strawberries.
  • Among the bacteria tested, Lacticaseibacillus paracasei had the best survival in simulated gastric conditions, highlighting the coatings' potential for both extending fruit quality and benefiting gut health.
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