Bacterial Metal-Scavengers Newly Isolated from Indonesian Gold Mine-Impacted Area: Bacillus altitudinis MIM12 as Novel Tools for Bio-Transformation of Mercury

Harsonowati, Wiwiek; Rahayuningsih, Sri Endah; Yuniarti, Erny; Susilowati, Dwi Ningsih; Manohara, Dyah; Sipriyadi, Sipriyadi; Widyaningsih, Sri; Akhdiya, Alina; Suryadi, Yadi; Tentrem, Titi

doi:10.1007/s00248-023-02203-z

Cited by 3 publications

(1 citation statement)

References 44 publications

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“…and silt [4]. B. altitudinis has received great attention owing to its industrial applications, including highlevel bioremediation of various metals [5], lignins [6], agricultural bio-fertilizers [7], agro-waste bioconversion of lignocellulosic (LC) plant matter, and probiotics with antimicrobial activity [8]. Recently, it was revealed that the extracellular polysaccharides produced by B. altitudinis may be strongly related to the viability of these strains in harsh deep-sea ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Isolation of Bacillus altitudinis 5-DSW with Protease Activity from Deep-Sea Mineral Water and Preparation of Functional Active Peptide Fractions from Chia Seeds

Jin,

Baik

2024

Preprint

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In this study, we successfully isolated Bacillus strains with high protease activity from deep-sea mineral water in Korea and used them to obtain functional peptide fractions from chia seeds. The obtained Bacillus strains showed high similarity of 99% with B. altitude with long rod type (named B. altitudinis 5-DSW) and showed high protease activity at 40°C and 70% of the activity was remained even at 70°C. The defatted chia seed protein (15–50 kDa) was treated with crude protease from B. altitudinis 5-DSW and digested into small peptides below 20kDa. The obtained chia seed peptides showed 3 times and 1.5 times higher antioxidant activity in DPPH and ABTs radical scavenging assays, respectively. Moreover, chia seed peptides showed enhanced AChE inhibitory activity with an IC50 value of 14.48 ± 0.88µg/mL and BChE inhibition activity with IC50 value of 10.90 ± 0.80µg/ml. Our results indicate that the newly isolated B. altitudinis 5-DSW and chia seed protein hydrolysates have potential applications in biotechnology and functional food development, enhancing the nutritional quality and value-added utilization of chia byproducts.

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Section: Introductionmentioning

confidence: 99%

Isolation of Bacillus altitudinis 5-DSW with Protease Activity from Deep-Sea Mineral Water and Preparation of Functional Active Peptide Fractions from Chia Seeds

Jin,

Baik

2024

Preprint

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Bioremediation of environments contaminated with mercury. Present and perspectives

González-Reguero

Mora

Lobo

et al. 2023

World J Microbiol Biotechnol

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Mercury is a highly toxic heavy metal whose emission sources can be both natural and the result of anthropic activity. Its polluting action on soils, and its ability to spread through the atmosphere and aquatic environments, constitutes a threat to human and environmental health; both for its bioaccumulation capacity and for biomagnification through the trophic chain. For this reason, there is a growing scientific and social interest in the reduction of this heavy metal in ecosystems. Bioremediation based on the use of microorganisms and/or plants is postulated as a sustainable alternative to traditional physicochemical methods. The main strategies used for this purpose (individually or in combination) are the volatilization of the contaminant, biosorption, phytoextraction and phytoremediation. All these tools are based on taking advantage of the natural and evolutionary capacity that different organisms have developed to adapt to the presence of various pollutants in the environment. Based on the consulted bibliography, these bioremediation methodologies focus on the use of microorganisms (freely or associated with plants) have been successfully applied in different ecosystems, postulating themselves as a respectful alternative for the future for the recovery of degraded environments. For these reasons there is a growing interest in the scientific community to design and use new techniques in a “One Health” context, which allow interpreting the positive impact of bioremediation. In this sense, the universalization of Omics techniques has allowed to abound in the knowledge of new bacterial taxa, and their biotechnological application. This study pretends to cover the present knowledge about mercury bioremediation techniques. In the same way, some new techniques and perspectives are presented in order to expand the frontiers of future research.

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Bioremediation of heavy metals contaminated industrial effluents by endophytes and their mechanisms

Harsonowati,

Nurrahma,

Shah

et al. 2024

Bio-Organic Amendments for Heavy Metal Remediation

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Bacterial Metal-Scavengers Newly Isolated from Indonesian Gold Mine-Impacted Area: Bacillus altitudinis MIM12 as Novel Tools for Bio-Transformation of Mercury

Cited by 3 publications

References 44 publications

Isolation of Bacillus altitudinis 5-DSW with Protease Activity from Deep-Sea Mineral Water and Preparation of Functional Active Peptide Fractions from Chia Seeds

Isolation of Bacillus altitudinis 5-DSW with Protease Activity from Deep-Sea Mineral Water and Preparation of Functional Active Peptide Fractions from Chia Seeds

Bioremediation of environments contaminated with mercury. Present and perspectives

Bioremediation of heavy metals contaminated industrial effluents by endophytes and their mechanisms

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