Improved detection of Ochratoxin A by marine bioluminescent bacteria V. harveyi BA

Wang, Weifen; Zhang, Mingzhou; Fang, Jian Jun; Zhang, Linya; Zou, Xiaonan; Wang, Xueyan

doi:10.17221/18/2012-cjfs

Cited by 4 publications

(4 citation statements)

References 20 publications

(18 reference statements)

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“…[ 27 ] These findings are consistent with the results of Wang et al. [ 28 ] who studied the reduction of solubility and swelling power of different starches by moist heat treatment.…”

Section: Resultssupporting

confidence: 90%

Effect of Different Pre‐Gelatinization Treatments on the Properties of Acidified Mung Bean Starch

Lang

Gao

et al. 2023

Starch Stärke

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Microwave radiation processing technology is an emerging technology with good penetration, uniform heating, and rapidity characteristics. After microwave wet heat treatment, the viscosity of starch decreased, and the gelatinization temperature changed the granule morphology, crystalline properties, and chemical structure of starch, resulting in changes in the physical and chemical properties of starch. It can effectively improve the sensory quality of food and prolong the shelf life of starch products. It is widely used in food, pharmaceutical, agriculture, and other industries. The pre‐gelatinized starch showed irregular shape, rough surface, and apparent edges and corners. Moreover, the starch particles' crystal structure is destroyed, crystallinity decreased to 11.43%–14.91%, and no new groups are formed. The starch granules changed from an ordered structure to a disordered structure, and the order degree decreased to 0.998–1.025. The enthalpy decreased to 2.22–4.32 J/g, the gelatinization temperature increased to 88.53–94.43 °, and the viscosity decreased significantly. After pre‐gelatinization, the amylose content decreased to 13.84%–16.25%. At 90 °, the solubility and swelling degree decreased to 2.48%–7.33% and 16.80%–17.81%, respectively. The freeze‐thaw water precipitation rate increased to 41.92%–59.35%, the water‐holding capacity increased by 3 times and transparency increased to 93.60%–95.84%.

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“…[ 27 ] These findings are consistent with the results of Wang et al. [ 28 ] who studied the reduction of solubility and swelling power of different starches by moist heat treatment.…”

Section: Resultssupporting

confidence: 90%

Effect of Different Pre‐Gelatinization Treatments on the Properties of Acidified Mung Bean Starch

Lang

Gao

et al. 2023

Starch Stärke

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“…It is known that, in their suspended form, bacterial P. phosphoreum cells and several other strains can be used for determining the presence of micotoxins [25]. The spectrum of mycotoxins and the range of their concentrations that can be detected using bioluminescent bacterial cells are known from various scientific publications (Table 1) [25,26,27,28,29,30,31]. However, the possibility of using bioluminescent bacterial cells in an immobilized form for the analysis of mycotoxins has not been investigated so far.…”

Section: Introductionmentioning

confidence: 99%

Immobilized Luminescent Bacteria for the Detection of Mycotoxins under Discrete and Flow-Through Conditions

et al. 2019

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A biosensitive element in the form of bacterial Photobacterium phosphoreum cells immobilized in poly(vinyl alcohol) cryogel was tested for the determination of different mycotoxins under discrete and flow-through analysis conditions. The immobilized bioluminescent cells made it possible to quantify the presence of Ochratoxin A, Sterigmatocystin, Zearalenone, and Deoxynivalenon in aqueous media in a wide range of their concentrations (0.017–56 mg/L, 0.010–33 mg/L, 0.009–14 mg/L, and 0.026–177 mg/L, respectively) via measuring the quenching of cell luminescence. The flow conditions allowed the analysis sensitivity to be improved by an order of magnitude in terms of detected concentrations. Using the immobilized luminescent bacterial cells, we have shown the possibility of evaluating the efficiency of the mycotoxins’ hydrolysis under the action of enzymes. In this way, a 94 ± 4.5% efficiency of Zearalenone hydrolysis with hexahistidine-containing organophosphorus hydrolase for 1h-long treatment of the mycotoxin solution (100 mg/L) was shown.

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“…(2006) and Wang et al . (2013) also reported that luminescence decreased when stationary phase was reached at 24 h …”

Section: Resultsmentioning

confidence: 89%

Experimental design of a simple medium for the bioluminescence of Aliivibrio fischeri and mathematical modelling for growth estimation

et al. 2019

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Increasing numbers of studies are using Aliivibrio fischeri (A. fischeri), a marine bioluminescent bacterium as a model, however the culture medium used for its growth are complex and expensive. The objectives of this study were: (1) to evaluate the effect of yeast extract, tryptone, and NaCl to select a simple and inexpensive culture medium suitable for A. fischeri growth and bioluminescence induction; and(2) to compare the performance of mathematical models to predict the growth of A. fischeri. A fractional factorial design was performed to evaluate the effect of yeast extract, tryptone, and sodium chloride on the luminescence of A. fischeri. The result showed that sodium chloride is the most important factor, congruent with its inducer role in bioluminescence. The best medium for bioluminescence induction was selected through an optimization plot, this medium is inexpensive, and generates the same luminescence as commercial formulations. The estimation of A. fischeri growth at OD 600 measurement was statistically analyzed. All evaluated models fitted the data adequately (r 2 > 0.96). The nonlinear models Gompertz, Richards and logistic provided a lower variation and a better fit of the growth estimation (r 2 >0.99),showing that these mathematical models can be used for the accurate growth prediction of A. fischeri.

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Improved detection of Ochratoxin A by marine bioluminescent bacteria V. harveyi BA

Cited by 4 publications

References 20 publications

Effect of Different Pre‐Gelatinization Treatments on the Properties of Acidified Mung Bean Starch

Effect of Different Pre‐Gelatinization Treatments on the Properties of Acidified Mung Bean Starch

Immobilized Luminescent Bacteria for the Detection of Mycotoxins under Discrete and Flow-Through Conditions

Experimental design of a simple medium for the bioluminescence of Aliivibrio fischeri and mathematical modelling for growth estimation

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