Removal of atrazine from aqueous environment using immobilized Pichia kudriavzevii Atz-EN-01 by two different methods

M, Evy Alice Abigail; Das, Nilanjana

doi:10.1016/j.ibiod.2015.05.014

Cited by 23 publications

(5 citation statements)

References 21 publications

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“…A minimal salts medium (MSM) containing K 2 HPO 4 0.4 g, KH 2 PO 4 0.2 g, NaCl 0.1 g, MgSO 4 .7H 2 O 0.5 g, MnCl 2 0.01 g, Fe(SO 4 ) 3 0.01 g, and Na 2 MoO 4 0.01 g per litre was used for the detoxification assay and the pH was adjusted to 7 as proposed by Abigail and Das 20 . The sterilized medium was supplied with AFB 1 from a 400 mg/L stock solution in methanol (99.9% purity) or with Zn (Zn(NO 3 ) 2 ) from a 100 mg/L stock solution in demineralized water.…”

Section: Methodsmentioning

confidence: 99%

Study of the bioremediatory capacity of wild yeasts

García‐Béjar

Arévalo‐Villena

Guisantes-Batán

et al. 2020

Sci Rep

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Microbial detoxification has been proposed as a new alternative for removing toxins and pollutants. In this study, the biodetoxification activities of yeasts against aflatoxin B 1 and zinc were evaluated by HPLC and voltammetric techniques. The strains with the best activity were also subjected to complementary assays, namely biocontrol capability and heavy-metal resistance. The results indicate that the detoxification capability is toxin-and strain-dependent and is not directly related to cell growth. Therefore, we can assume that there are some other mechanisms involved in the process, which must be studied in the future. Only 33 of the 213 strains studied were capable of removing over 50% of aflatoxin B 1 , Rhodotrorula mucilaginosa being the best-performing species detected. As for zinc, there were 39 strains that eliminated over 50% of the heavy metal, with Diutina rugosa showing the best results. Complementary experiments were carried out on the strains with the best detoxification activity. Biocontrol tests against mycotoxigenic moulds showed that almost 50% of strains had an inhibitory effect on growth. Additionally, 53% of the strains grew in the presence of 100 mg/L of zinc. It has been proven that yeasts can be useful tools for biodetoxification, although further experiments must be carried out in order to ascertain the mechanisms involved. In recent years, biodetoxification has become a new alternative for the removal of compounds such as microbial toxins, chemical pollutants, and industrial waste products. Depending on the type of system involved, biodetoxification pathways are classified into three categories: (1) commodity-dependent, (2) enzymatic, or (3) microbial 1. Microbial detoxification methods may prove useful as tools for providing new ways of eliminating heavy metals or biotoxins, contaminants that have become a growing global concern. Due to industrial development, wastewaters are increasingly being discharged into the environment, either directly or indirectly. Unlike other contaminants, heavy metals are not degradable by natural biochemical pathways. These metals, which tend to accumulate in living organisms, are toxic or carcinogenic to those organisms 2. Zinc (Zn) plays a significant regulatory role in several biological processes such as metabolism, where it acts as a cofactor of numerous enzymes and participates in various oxidation-reduction reactions 3. However, like all heavy metals, Zn may cause negative ecological effects when toxic limits are exceeded, with LD 50 values in the 186-623 mg Zn/kg/day range, depending on the anion of the salt 4. Aquatic environments are generally contaminated with large amounts of Zn owing to industrial waste discharge, which can also accumulate in soil sediments. This produces degradation of the ecosystem and biodiversity loss 5. Different concentrations of Zn can be found in the soil and waters of inhabited areas. Although attempts have been made to clean them using conventional methods, these have proved ineffective when concentrations are belo...

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Section: Methodsmentioning

confidence: 99%

Study of the bioremediatory capacity of wild yeasts

García‐Béjar

Arévalo‐Villena

Guisantes-Batán

et al. 2020

Sci Rep

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“…When CI is utilized instead of free cells, the percentage of clearance and efficiency increases for pesticides including chlorpyrifos, atrazine, difenoconazole cypermethrin, carbaryl, endosulfan, and carbofuran. The benefits of utilizing CI are independently supported by the immobilization method or substance employed ( Bhadbhade et al, 2002 ; Pattanasupong et al, 2004 ; Adinarayana et al, 2005 ; López-Pérez et al, 2006 ; Fuentes et al, 2013 ; Zucca and Sanjust, 2014 ; Abigail and Das, 2015 ; Chen et al, 2015 ; Tallur et al, 2015 ; Bhatt et al, 2016 ; Fernández-López et al, 2017 ). Because pesticides come in such a wide variety of chemical groups, the factors that influence their presence, transit, and mobility are complicated and difficult to anticipate.…”

Section: Biodegradation Of Pesticide Pollutantsmentioning

confidence: 99%

Current status of pesticide effects on environment, human health and it’s eco-friendly management as bioremediation: A comprehensive review

et al. 2022

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Pesticides are either natural or chemically synthesized compounds that are used to control a variety of pests. These chemical compounds are used in a variety of sectors like food, forestry, agriculture and aquaculture. Pesticides shows their toxicity into the living systems. The World Health Organization (WHO) categorizes them based on their detrimental effects, emphasizing the relevance of public health. The usage can be minimized to a least level by using them sparingly with a complete grasp of their categorization, which is beneficial to both human health and the environment. In this review, we have discussed pesticides with respect to their global scenarios, such as worldwide distribution and environmental impacts. Major literature focused on potential uses of pesticides, classification according to their properties and toxicity and their adverse effect on natural system (soil and aquatic), water, plants (growth, metabolism, genotypic and phenotypic changes and impact on plants defense system), human health (genetic alteration, cancer, allergies, and asthma), and preserve food products. We have also described eco-friendly management strategies for pesticides as a green solution, including bacterial degradation, myco-remediation, phytoremediation, and microalgae-based bioremediation. The microbes, using catabolic enzymes for degradation of pesticides and clean-up from the environment. This review shows the importance of finding potent microbes, novel genes, and biotechnological applications for pesticide waste management to create a sustainable environment.

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“…After 50 days of reaction, the reactor has a stable degradation effect to atrazine (the degradation rate was 83.1 ± 3.9%) without adding an external carbon source. Abigail and Das [113] immobilized Pichia kudriavzevii Atz-EN-01 cells on clay brick particles and then encapsulated them in a PVA-SA matrix; it found that the removal rate of atrazine was close to 100% by the new biomaterial. Pannier et al [114] employed the sol-gel process to immobilize the atrazine-degrading bacterial strain Pseudomonas sp.…”

Section: Material-microbial Combined Technologymentioning

confidence: 99%

A Review on Recent Treatment Technology for Herbicide Atrazine in Contaminated Environment

Liu

You

et al. 2019

IJERPH

118

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Atrazine is a kind of triazine herbicide that is widely used for weed control due to its good weeding effect and low price. The study of atrazine removal from the environment is of great significance due to the stable structure, difficult degradation, long residence time in environment, and toxicity on the organism and human beings. Therefore, a number of processing technologies are developed and widely employed for atrazine degradation, such as adsorption, photochemical catalysis, biodegradation, etc. In this article, with our previous research work, the progresses of researches about the treatment technology of atrazine are systematically reviewed, which includes the four main aspects of physicochemical, chemical, biological, and material-microbial-integrated aspects. The advantages and disadvantages of various methods are summarized and the degradation mechanisms are also evaluated. Specially, recent advanced technologies, both plant-microbial remediation and the material-microbial-integrated method, have been highlighted on atrazine degradation. Among them, the plant-microbial remediation is based on the combined system of soil-plant-microbes, and the material-microbial-integrated method is based on the synergistic effect of materials and microorganisms. Additionally, future research needs to focus on the excellent removal effect and low environmental impact of functional materials, and the coordination processing of two or more technologies for atrazine removal is also highlighted.

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Removal of atrazine from aqueous environment using immobilized Pichia kudriavzevii Atz-EN-01 by two different methods

Cited by 23 publications

References 21 publications

Study of the bioremediatory capacity of wild yeasts

Study of the bioremediatory capacity of wild yeasts

Current status of pesticide effects on environment, human health and it’s eco-friendly management as bioremediation: A comprehensive review

A Review on Recent Treatment Technology for Herbicide Atrazine in Contaminated Environment

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