Sensitivity of Heterotrophic Bacteria in the Low-Salinity Water Areas and Estuary in Siak District toward Pathogenic Bacteria in Fish

Feliatra, F.; Hamdani, Rizki; Lukystyowati, Iesye; Nurachmi, irvina

doi:10.1155/2019/7456410

Cited by 10 publications

(4 citation statements)

References 26 publications

(25 reference statements)

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“…The fact is that WPCBs have an alkaline nature resulting in the release of alkaline compounds ( Rasoulnia et al, 2021 ). Since heterotrophic bacteria produce organic acid due to carbon consumption, this leads to a decrease in the medium pH ( Feliatra et al, 2019 ; Mei et al., 2021 ). Yet, the amount produced organic acids in this study was not enough to neutralize the alkalinity of e-waste.…”

Section: Resultsmentioning

confidence: 99%

Remediation of metals and plastic from e-waste by iron mine indigenous acidophilic bacteria

et al. 2022

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The growing consumption of electrical and electronic equipment leads to high amounts of electronic waste (e-waste), which is now considered the fastest-growing waste stream at the national and international levels. As well as being a potential secondary resource due to its precious metals content, e-waste also contains strategic metals and plastics. For instance, mobile phones have about 25–55% plastic substances. A few studies have been performed to investigate the potential of indigenous bacteria in metals’ bioleaching from the polluted environment. Heterotrophic bioleaching potential in acidic conditions had been preliminarily investigated. Two soil types of iron ore were considered the source of indigenous bacteria. Despite the acidophilic nature of the bacterial consortium, they continued their leaching activity regardless of alkaline conditions. Maximum biorecovery rate related to copper (4%) responding to the main soil, owing to the higher copper content of mobile phone waste. Chromium had the least recovery rate (⩽0.002%). Overall, the maximum metal recovery rate was 4.7%, achieved by tailing heterotrophs at an e-waste loading of 10 g l−1. Statistical analysis had shown that there was no significant difference between the metal recovery rates and soil type or even the solid-liquid ratio ( p > 0.05). Although acidophilic indigenous heterotrophs could not be an appropriate alternative for a large amount of metal recovery process, they might have considerable potential in the bioremediation of e-waste plastic fractions and metals in low concentrations simultaneously.

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Section: Resultsmentioning

confidence: 99%

Remediation of metals and plastic from e-waste by iron mine indigenous acidophilic bacteria

et al. 2022

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“…The electrophoresis was done for 45 min in a 1X TBE (Tris Borate EDTA) buffer. The bands were then seen on a UV transilluminator (Vilber Lourmat) and recorded with an Olympus SP 500-UZ digital camera with a UV filter (Feliatra et al 2019). Furthermore, using the Basic Local Alignment Search Tool (BLAST) (http://blast.ncbi.nlm.nih.gov/Blast.html), the sequencing results were compared to known sequences in the GenBank database.…”

Section: Molecular Characterization Using 16s Rrna Gene Sequencingmentioning

confidence: 99%

The screening of probiotic lactic acid bacteria from honey of stingless bee from West Sumatra, Indonesia and using as starter culture

et al. 2022

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Abstract. Melia S, Aritonang SN, Juliyarsi I, Kurnia YF, Rusdimansyah, Hernita VO. 2022. The screening of probiotic lactic acid bacteria from honey of stingless bee from West Sumatra, Indonesia and using as starter culture. Biodiversitas 23: 6379-6385. This study aimed to isolate probiotic lactic acid bacteria (LAB) from stingless bee honey (Galo-galo) and apply it as a starter culture. This research used stingless bee honey (Galo-galo) from west Sumatra, Indonesia. There are 6 types of honey bees, namely Tetragonula sarawakensis (TS), Tetragonula testaceitarsis (TT), Tetragonula minangkabau (MK), Tetrigona binghami (TB), Geniotrigona thoracica (TR) and Heterotrigona itama (IT). The screening of probiotics was evaluated as the LAB isolates' ability to resist acid (pH 3), bile salts (0xgall 0.5%), and antimicrobial activity against pathogenic bacteria. Based on the probiotic selection, the TB1 isolate from Tetrigona binghami honey had an acid tolerance of 82.75%, bile salt tolerance of 94.44%, and the highest antimicrobial activity against pathogenic bacteria with more excellent resistance than antibiotics. The identification with 16S rRNA showed that the TB1 bacterial isolate had 100% similarity with Lactobacillus plantarum SN13TFurthermore, starter culture inoculated with 6% L.plantarum SN13T met the starter culture parameters, with a pH of 4.7, titratable acidity of 1.46%, and lactic acid bacteria counts of 9.0 x 109 CFU/mL. L.plantarum SN13T is a candidate probiotic bacteria isolated from the stingless bee honey (Tetrigona binghami). This bacteria has the potential to be developed as a starter for fermented milk processing in the food industry.

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“…It took 45 µl of electrophoresis in a concentration of 1X TBE (Tris Borate EDTA) buffer to separate the two groups. Following that, a UV transilluminator (Vilber Lourmat) and a UV-filtered digital camera were used to see and record the bands (Olympus SP 500-UZ) (Feliatra et al, 2019).…”

Section: Genomic Dna Isolation Of Lactic Acid Bacteria and 16s Rrnamentioning

confidence: 99%

Selection of Potential Lactic Acid Bacteria as a Candidate Probiotic on Cheese Making by Product Whey

Melia¹,

Juliyarsi²,

Kurnia³

et al. 2022

AAVS

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Whey is a by-product of the cheese-making process which may contain lactic acid bacteria (LAB). The objectives of this study were to isolate, identify, and characterize probiotic lactic acid bacteria from whey, a by-product of cheese production. This study consisted of three stages: (1) isolation, identification of LAB obtain from whey, a byproduct of cheese production, morphology, physiology, and biochemistry; (2) in vitro probiotic characteristics testing, including survival at pH 3, resistance to 0.3% bile salt media, and antimicrobial activity against Escherichia coli: O157, Pseudomonas, Listeria inokua, and Klebsiella pneumonia; and (3) Molecular identification of LAB by analysis of the base sequence of the 16S RNA gene. The whey for this study was collected in Lasi Farm in Agam Regency, West Sumatra, Indonesia. The data was subsequently subJected to descriptive analysis. The bacteria obtained were rod-shaped that were catalase negative and homofermentative. Lactic acid bacteria were found to have antibacterial activity against pathogenic bacteria such as E. coli, Pseudomonas, Listeria inokua and Klebsiella pneumonia. Base on the phylogenetic analysis, the bacteria isolated were closely related to Limosilactobacillus fermentum, a probiotic bacteria candidate.

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Sensitivity of Heterotrophic Bacteria in the Low-Salinity Water Areas and Estuary in Siak District toward Pathogenic Bacteria in Fish

Cited by 10 publications

References 26 publications

Remediation of metals and plastic from e-waste by iron mine indigenous acidophilic bacteria

Remediation of metals and plastic from e-waste by iron mine indigenous acidophilic bacteria

The screening of probiotic lactic acid bacteria from honey of stingless bee from West Sumatra, Indonesia and using as starter culture

Selection of Potential Lactic Acid Bacteria as a Candidate Probiotic on Cheese Making by Product Whey

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