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Biofilm reduction potential of micro-plasma discharged water (m-PDW) against the microbes isolated from a tofu manufacturing plant.

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Title: Biofilm reduction potential of micro-plasma discharged water (m-PDW) against the microbes isolated from a tofu manufacturing plant.
Authors: Kim, Mi-Hyun1,2, Khan, Muhammad Saiful Islam1, Lee, Kwang-Won2, Kim, Yun-Ji1,3 yunji@kfri.re.kr
Source: LWT - Food Science & Technology. Nov2018, Vol. 97, p719-724. 6p.
Subjects: Biofilms, Field emission electron microscopes, Scanning electron microscopy, Tofu, Brevundimonas
Abstract: Abstract In this study, biofilm inactivation potential of micro-plasma discharged water (m-PDW), a commercially available water purifier known as EP purification, was evaluated. Bacterial strains were collected from the various contaminated area of tofu manufacturing industry, overall 15 different types of bacterial strains were isolated and their biofilm formation ability was determined by using crystal violet (CV) staining. Three different strains (20% of the isolated strains), namely, Brevundimonas naejangsanensis, Delfita lacustris and Lactococcus lactis , with biofilm density (OD 590 ) > 0.4, were identified as biofilm-producing strains. These three biofilm-producing strains were used to form biofilm on stainless steel (SS) coupons in a laboratory condition for four days and the biofilm containing coupons were treated with EP purification device. The inactivation obtained after 40 min of treatment was 4.8 and 4.2 log CFU/coupon for Brevundimonas naejangsanensis and Delfita lacustris, respectively, whereas no viable count was detected for Lactococcus lactis after the same treatment time. Biofilm reduction effects of m-PDW treatment differ according to biofilm-producing ability or strain characteristics. SEI (Secondary Electron Images) was obtained by field emission scanning electron microscope (FE-SEM) that showed m-PDW treatment has significant reduction potential on biofilm inactivation for the sample collected from tofu manufacturing industry. Highlights • Three different biofilm-forming strains were isolated from tofu manufacturing industry. • EP purification device has a great potential for biofilm inactivation. • Different strain has different surviving ability against micro-plasma discharged water treatment. [ABSTRACT FROM AUTHOR]
Copyright of LWT - Food Science & Technology is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 131592897
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PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
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  Data: Biofilm reduction potential of micro-plasma discharged water (m-PDW) against the microbes isolated from a tofu manufacturing plant.
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  Data: <searchLink fieldCode="AR" term="%22Kim%2C+Mi-Hyun%22">Kim, Mi-Hyun</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Khan%2C+Muhammad+Saiful+Islam%22">Khan, Muhammad Saiful Islam</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lee%2C+Kwang-Won%22">Lee, Kwang-Won</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Kim%2C+Yun-Ji%22">Kim, Yun-Ji</searchLink><relatesTo>1,3</relatesTo><i> yunji@kfri.re.kr</i>
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  Data: <searchLink fieldCode="JN" term="%22LWT+-+Food+Science+%26+Technology%22">LWT - Food Science & Technology</searchLink>. Nov2018, Vol. 97, p719-724. 6p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Biofilms%22">Biofilms</searchLink><br /><searchLink fieldCode="DE" term="%22Field+emission+electron+microscopes%22">Field emission electron microscopes</searchLink><br /><searchLink fieldCode="DE" term="%22Scanning+electron+microscopy%22">Scanning electron microscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Tofu%22">Tofu</searchLink><br /><searchLink fieldCode="DE" term="%22Brevundimonas%22">Brevundimonas</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract In this study, biofilm inactivation potential of micro-plasma discharged water (m-PDW), a commercially available water purifier known as EP purification, was evaluated. Bacterial strains were collected from the various contaminated area of tofu manufacturing industry, overall 15 different types of bacterial strains were isolated and their biofilm formation ability was determined by using crystal violet (CV) staining. Three different strains (20% of the isolated strains), namely, Brevundimonas naejangsanensis, Delfita lacustris and Lactococcus lactis , with biofilm density (OD 590 ) > 0.4, were identified as biofilm-producing strains. These three biofilm-producing strains were used to form biofilm on stainless steel (SS) coupons in a laboratory condition for four days and the biofilm containing coupons were treated with EP purification device. The inactivation obtained after 40 min of treatment was 4.8 and 4.2 log CFU/coupon for Brevundimonas naejangsanensis and Delfita lacustris, respectively, whereas no viable count was detected for Lactococcus lactis after the same treatment time. Biofilm reduction effects of m-PDW treatment differ according to biofilm-producing ability or strain characteristics. SEI (Secondary Electron Images) was obtained by field emission scanning electron microscope (FE-SEM) that showed m-PDW treatment has significant reduction potential on biofilm inactivation for the sample collected from tofu manufacturing industry. Highlights • Three different biofilm-forming strains were isolated from tofu manufacturing industry. • EP purification device has a great potential for biofilm inactivation. • Different strain has different surviving ability against micro-plasma discharged water treatment. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of LWT - Food Science & Technology is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.lwt.2018.07.047
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        Text: English
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      – SubjectFull: Field emission electron microscopes
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      – SubjectFull: Scanning electron microscopy
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      – SubjectFull: Tofu
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      – TitleFull: Biofilm reduction potential of micro-plasma discharged water (m-PDW) against the microbes isolated from a tofu manufacturing plant.
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            NameFull: Kim, Mi-Hyun
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            NameFull: Khan, Muhammad Saiful Islam
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            NameFull: Lee, Kwang-Won
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              M: 11
              Text: Nov2018
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              Y: 2018
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