Adsorption of aflatoxin B1 mycotoxins by raw and lyophilized bentonitic clay

Bettiol, Paula S.; Cechinel, Maria Alice Prado; Oliveira, Camila Machado de; Goulart, Kelvin; Dol-Bó, Alexandre G.; Bernardin, Adriano Michael; Peterson, Michael

doi:10.1016/j.apt.2022.103682

Cited by 6 publications

(4 citation statements)

References 33 publications

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“…Some bibliographic reports support these results. For instance, it was stated that lyophilized bentonic clays does not present changes in their structure . Meanwhile, when discussing the lyophilization process of hybrid materials, we can differentiate two types of effects.…”

Section: Resultsmentioning

confidence: 99%

“…For instance, it was stated that lyophilized bentonic clays does not present changes in their structure. 27 Meanwhile, when discussing the lyophilization process of hybrid materials, we can differentiate two types of effects. On the one hand, biomass preserves its structure through freeze-drying compared to thermal drying, 28,29 whereas thermal drying causes the collapse of the wet mass.…”

Section: Characterization Of Fungal Biomass−clay Interactions 311 Sca...mentioning

confidence: 99%

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Spectroscopic Approach on Bulk and Surface Properties of Fungal Biomass-Clay Adsorbents: Effect of Temperature and Amount of Clay during Synthesis

Olivelli

Schampera

Woche

et al. 2022

Ind. Eng. Chem. Res.

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The physicochemical properties of an enhanced adsorbent material generated by clays and fungal biomass can be modified systematically. We used spectroscopic techniques to investigate the interaction mechanisms between biomass and clay and how surface properties change with synthesis temperature and clay amounts. Biomass-clay complexes were synthesized and either shock-frozen and freeze-dried or dried at 60 °C in the oven. Surface and bulk properties were analyzed by scanning electron microscopy, attenuated total reflectance-Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and by wettability and surface charge measurements. Interactions of specific biomass-related molecules with clay and changes in physicochemical properties were observed. Higher amounts of clay caused a decrease in particle aggregation while the biomass arranged more evenly. XPS proved interactions due to exchange reactions between Na from the clay and biomass external organic compounds. FTIR, wettability, surface charge, and XPS indicated a less ordered arrangement of the biomass on the clay when drying was performed at 60 °C. The properties of these types of materials define their potential use in future applications. These results indicate the possibility of the selective creation of bioclays: more hydrophobic, with a higher content of organic matter or more specific functional groups on the surface.

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Section: Resultsmentioning

confidence: 99%

Section: Characterization Of Fungal Biomass−clay Interactions 311 Sca...mentioning

confidence: 99%

Spectroscopic Approach on Bulk and Surface Properties of Fungal Biomass-Clay Adsorbents: Effect of Temperature and Amount of Clay during Synthesis

Olivelli

Schampera

Woche

et al. 2022

Ind. Eng. Chem. Res.

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“…There exists ample literature related to the use of clay materials for milk toxin capture before and after lactation. Raw and modified bentonites [156][157][158][159] and smectites turned out to be the most investigated clay materials in aflatoxin retention. This is most likely due to their multiple interaction whose distribution is known to vary according to the chemical composition and pH.…”

Section: Clay-based Materials For Milk Toxin Capturementioning

confidence: 99%

Role of Clay Substrate Molecular Interactions in Some Dairy Technology Applications

Azzouz,

Arus,

Platon

2024

IJMS

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The use of clay materials in dairy technology requires a multidisciplinary approach that allows correlating clay efficiency in the targeted application to its interactions with milk components. For profitability reasons, natural clays and clay minerals can be used as low-cost and harmless food-compatible materials for improving key processes such as fermentation and coagulation. Under chemical stability conditions, clay materials can act as adsorbents, since anionic clay minerals such as hydrotalcite already showed effectiveness in the continuous removal of lactic acid via in situ anion exchange during fermentation and ex situ regeneration by ozone. Raw and modified bentonites and smectites have also been used as adsorbents in aflatoxin retention and as acidic species in milk acidification and coagulation. Aflatoxins and organophilic milk components, particularly non-charged caseins around their isoelectric points, are expected to display high affinity towards high silica regions on the clay surface. Here, clay interactions with milk components are key factors that govern adsorption and surface physicochemical processes. Knowledge about these interactions and changes in clay behavior according to the pH and chemical composition of the liquid media and, more importantly, clay chemical stability is an essential requirement for understanding process improvements in dairy technology, both upstream and downstream of milk production. The present paper provides a comprehensive review with deep analysis and synthesis of the main findings of studies in this area. This may be greatly useful for mastering milk processing efficiency and envisaging new prospects in dairy technology.

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“…According to Carraro et al (2014), milk contaminated with aflatoxin M1 (0.080 mg/L) was decontaminated with bentonites to an acceptable limit, although slight changes in the nutritional profile of milk were observed. Also, raw and lyophilised bentonite decreased aflatoxin B1 from 92.8 -98.6% at different conditions (temperature, pH, time, and dose) (Bettiol et al, 2022). However, due to the limited binding effects of bentonites, they are not effective for the adsorption of other mycotoxins (Čolović et al, 2019).…”

Section: Mycotoxin Product Process Referencementioning

confidence: 99%

Strategies for controlling and decontaminating mycotoxins in foods and feeds: A review

Mshelia,

Selamat,

Samsudin

2023

IFRJ

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Mycotoxins are naturally occurring chemical compounds produced by certain genera, such as Aspergillus, Fusarium, and Penicillium, as by-products of their metabolism (secondary metabolites). They are plant pathogens able to cause infection pre-, during, and post-harvest. The most important and economically-relevant mycotoxins of great concern to humans, plants, and animals are aflatoxins, ochratoxin A, fumonisins, and trichothecenes. The present review aimed to compile updated management strategies of mycotoxins in foods and feeds, including control and detoxification techniques. Generally, the strategies are divided into physical, chemical, and biological, and can be implemented during pre-, harvest, and post-harvest. Physical controls pre-harvest includes the development and planting of resistant varieties; during harvest include control of field infections, timely harvest, sufficient drainage, and physical barriers; and post-harvest include storage of harvested commodities under conditions that would prevent and exclude the growth and mycotoxin production by mycotoxigenic fungi. Chemical controls generally involve the use of chemically synthesised fungicides which are often associated with long-term effects on the environment. When compared with chemical and physical controls, biological controls are generally more unique, productive, and environmentally friendly, and when implemented appropriately in the Integrated Pest Management (IPM) strategy, can collectively control the growth and proliferation of mycotoxigenic, and reduce the incidence of mycotoxin production and contamination in foods and feeds.

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Adsorption of aflatoxin B1 mycotoxins by raw and lyophilized bentonitic clay

Cited by 6 publications

References 33 publications

Spectroscopic Approach on Bulk and Surface Properties of Fungal Biomass-Clay Adsorbents: Effect of Temperature and Amount of Clay during Synthesis

Spectroscopic Approach on Bulk and Surface Properties of Fungal Biomass-Clay Adsorbents: Effect of Temperature and Amount of Clay during Synthesis

Role of Clay Substrate Molecular Interactions in Some Dairy Technology Applications

Strategies for controlling and decontaminating mycotoxins in foods and feeds: A review

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