A dip test strip based on immobilized pararosaniline for detection of formalin adulteration in tofu

Bambang Kuswandi, Alni Riskyna, Musa Ahmad

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A sensitive dip test strip for detection of formalin (HCHO) in tofu samples based on immobilized pararosaniline (PR) has been developed. The test strip has been fabricated by immobilizing PR reagent on filter paper. By using image color analysis (ImageJ) as the average of ΔRGB value as color sensor response, the analytical parameters are obtained from an area of the sensing zone of the test strip using digital output of the color scanner. By using this scanometric method, it is possible to determine HCHO as low as 0.05 mg/L with the concentration range of 2-80 mg/L and the response time of 3 minutes. The reproducibility was found to be 8.04% (RSD) for good recovery. The test strip has been successfully applied to detect formaldehyde in tofu samples, and the results show in good agreement with the Nash method using UV/vis spectrophotometry.

Original languageEnglish
Title of host publicationRecent Advancement on Applied Physics, Industrial Chemistry and Chemical Technology
Subtitle of host publicationProceedings of the International Conference on Recent Advancements in Science and Technology 2017, ICoRAST 2017
PublisherAmerican Institute of Physics Inc.
Volume1972
ISBN (Electronic)9780735416796
DOIs
Publication statusPublished - 5 Jun 2018
Externally publishedYes
EventInternational Conference on Recent Advancements in Science and Technology 2017, ICoRAST 2017 - Melaka, Malaysia
Duration: 7 Nov 20178 Nov 2017

Other

OtherInternational Conference on Recent Advancements in Science and Technology 2017, ICoRAST 2017
CountryMalaysia
CityMelaka
Period7/11/178/11/17

Fingerprint

strip
color
spectrophotometry
formaldehyde
scanners
reagents
recovery
filters
output
sensors

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Kuswandi, B., Riskyna, A., & Ahmad, M. (2018). A dip test strip based on immobilized pararosaniline for detection of formalin adulteration in tofu. In Recent Advancement on Applied Physics, Industrial Chemistry and Chemical Technology: Proceedings of the International Conference on Recent Advancements in Science and Technology 2017, ICoRAST 2017 (Vol. 1972). American Institute of Physics Inc.. https://doi.org/10.1063/1.5041220

A dip test strip based on immobilized pararosaniline for detection of formalin adulteration in tofu. / Kuswandi, Bambang; Riskyna, Alni; Ahmad, Musa.

Recent Advancement on Applied Physics, Industrial Chemistry and Chemical Technology: Proceedings of the International Conference on Recent Advancements in Science and Technology 2017, ICoRAST 2017. Vol. 1972 American Institute of Physics Inc., 2018.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kuswandi, B, Riskyna, A & Ahmad, M 2018, A dip test strip based on immobilized pararosaniline for detection of formalin adulteration in tofu. in Recent Advancement on Applied Physics, Industrial Chemistry and Chemical Technology: Proceedings of the International Conference on Recent Advancements in Science and Technology 2017, ICoRAST 2017. vol. 1972, American Institute of Physics Inc., International Conference on Recent Advancements in Science and Technology 2017, ICoRAST 2017, Melaka, Malaysia, 7/11/17. https://doi.org/10.1063/1.5041220
Kuswandi B, Riskyna A, Ahmad M. A dip test strip based on immobilized pararosaniline for detection of formalin adulteration in tofu. In Recent Advancement on Applied Physics, Industrial Chemistry and Chemical Technology: Proceedings of the International Conference on Recent Advancements in Science and Technology 2017, ICoRAST 2017. Vol. 1972. American Institute of Physics Inc. 2018 https://doi.org/10.1063/1.5041220
Kuswandi, Bambang ; Riskyna, Alni ; Ahmad, Musa. / A dip test strip based on immobilized pararosaniline for detection of formalin adulteration in tofu. Recent Advancement on Applied Physics, Industrial Chemistry and Chemical Technology: Proceedings of the International Conference on Recent Advancements in Science and Technology 2017, ICoRAST 2017. Vol. 1972 American Institute of Physics Inc., 2018.
@inproceedings{a89d6a88ecc2465fa8b35dd847246d30,
title = "A dip test strip based on immobilized pararosaniline for detection of formalin adulteration in tofu",
abstract = "A sensitive dip test strip for detection of formalin (HCHO) in tofu samples based on immobilized pararosaniline (PR) has been developed. The test strip has been fabricated by immobilizing PR reagent on filter paper. By using image color analysis (ImageJ) as the average of ΔRGB value as color sensor response, the analytical parameters are obtained from an area of the sensing zone of the test strip using digital output of the color scanner. By using this scanometric method, it is possible to determine HCHO as low as 0.05 mg/L with the concentration range of 2-80 mg/L and the response time of 3 minutes. The reproducibility was found to be 8.04{\%} (RSD) for good recovery. The test strip has been successfully applied to detect formaldehyde in tofu samples, and the results show in good agreement with the Nash method using UV/vis spectrophotometry.",
author = "Bambang Kuswandi and Alni Riskyna and Musa Ahmad",
year = "2018",
month = "6",
day = "5",
doi = "10.1063/1.5041220",
language = "English",
volume = "1972",
booktitle = "Recent Advancement on Applied Physics, Industrial Chemistry and Chemical Technology",
publisher = "American Institute of Physics Inc.",

}

TY - GEN

T1 - A dip test strip based on immobilized pararosaniline for detection of formalin adulteration in tofu

AU - Kuswandi, Bambang

AU - Riskyna, Alni

AU - Ahmad, Musa

PY - 2018/6/5

Y1 - 2018/6/5

N2 - A sensitive dip test strip for detection of formalin (HCHO) in tofu samples based on immobilized pararosaniline (PR) has been developed. The test strip has been fabricated by immobilizing PR reagent on filter paper. By using image color analysis (ImageJ) as the average of ΔRGB value as color sensor response, the analytical parameters are obtained from an area of the sensing zone of the test strip using digital output of the color scanner. By using this scanometric method, it is possible to determine HCHO as low as 0.05 mg/L with the concentration range of 2-80 mg/L and the response time of 3 minutes. The reproducibility was found to be 8.04% (RSD) for good recovery. The test strip has been successfully applied to detect formaldehyde in tofu samples, and the results show in good agreement with the Nash method using UV/vis spectrophotometry.

AB - A sensitive dip test strip for detection of formalin (HCHO) in tofu samples based on immobilized pararosaniline (PR) has been developed. The test strip has been fabricated by immobilizing PR reagent on filter paper. By using image color analysis (ImageJ) as the average of ΔRGB value as color sensor response, the analytical parameters are obtained from an area of the sensing zone of the test strip using digital output of the color scanner. By using this scanometric method, it is possible to determine HCHO as low as 0.05 mg/L with the concentration range of 2-80 mg/L and the response time of 3 minutes. The reproducibility was found to be 8.04% (RSD) for good recovery. The test strip has been successfully applied to detect formaldehyde in tofu samples, and the results show in good agreement with the Nash method using UV/vis spectrophotometry.

UR - http://www.scopus.com/inward/record.url?scp=85048852840&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85048852840&partnerID=8YFLogxK

U2 - 10.1063/1.5041220

DO - 10.1063/1.5041220

M3 - Conference contribution

VL - 1972

BT - Recent Advancement on Applied Physics, Industrial Chemistry and Chemical Technology

PB - American Institute of Physics Inc.

ER -