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Intelligent pH indicator film composed of agar/potato starch and anthocyanin extracts from purple sweet potato.
Food Chem. 2017 Mar 01; 218:122-128.FC

Abstract

A new colorimetric pH indicator film was developed using agar, potato starch, and natural dyes extracted from purple sweet potato, Ipomoea batatas. Both agar and potato starch are solid matrices used to immobilize natural dyes, anthocyanins. The ultraviolet-visible (UV-vis) spectrum of anthocyanin extract solutions and agar/potato starch films with anthocyanins showed color variations to different pH values (pH 2.0-10.0). Fourier transform infrared (FT-IR) and UV-vis region spectra showed compatibility between agar, starch, and anthocyanin extracts. Color variations of pH indicator films were measured by a colorimeter after immersion in different pH buffers. An application test was conducted for potential use as a meat spoilage sensor. The pH indicator films showed pH changes and spoilage point of pork samples, changing from red to green. Therefore, the developed pH indicator films could be used as a diagnostic tool for the detection of food spoilage.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Choi I
Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Republic of Korea. Electronic address: haunlzy@naver.com.
Lee JY
Korea Institute of Industrial Technology, Cheonan-si, Chungcheongnam-do 31056, Republic of Korea. Electronic address: jaylee@kitech.re.kr.
Lacroix M
Research Laboratory of Sciences Applied to Food, INRS-Institut Armand Frappier, Canadian Irradiation Centre, 531 Boulevard des Prairies, Laval, Quebec H7V 1B7, Canada. Electronic address: monique.lacroix@iaf.inrs.ca.
Han J
Department of Food Bioscience and Technology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Republic of Korea. Electronic address: jjhan@korea.ac.kr.

MeSH

AgarAnimalsAnthocyaninsFood PackagingHydrogen-Ion ConcentrationIpomoea batatasPlant ExtractsRed MeatSpectroscopy, Fourier Transform InfraredStarchSwine

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27719887

Citation

Choi, Inyoung, et al. "Intelligent pH Indicator Film Composed of Agar/potato Starch and Anthocyanin Extracts From Purple Sweet Potato." Food Chemistry, vol. 218, 2017, pp. 122-128.
Choi I, Lee JY, Lacroix M, et al. Intelligent pH indicator film composed of agar/potato starch and anthocyanin extracts from purple sweet potato. Food Chem. 2017;218:122-128.
Choi, I., Lee, J. Y., Lacroix, M., & Han, J. (2017). Intelligent pH indicator film composed of agar/potato starch and anthocyanin extracts from purple sweet potato. Food Chemistry, 218, 122-128. https://doi.org/10.1016/j.foodchem.2016.09.050
Choi I, et al. Intelligent pH Indicator Film Composed of Agar/potato Starch and Anthocyanin Extracts From Purple Sweet Potato. Food Chem. 2017 Mar 1;218:122-128. PubMed PMID: 27719887.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Intelligent pH indicator film composed of agar/potato starch and anthocyanin extracts from purple sweet potato. AU - Choi,Inyoung, AU - Lee,Jun Young, AU - Lacroix,Monique, AU - Han,Jaejoon, Y1 - 2016/09/09/ PY - 2016/03/11/received PY - 2016/09/06/revised PY - 2016/09/07/accepted PY - 2016/10/11/entrez PY - 2016/10/11/pubmed PY - 2017/1/4/medline KW - Agar KW - Anthocyanin KW - Intelligent packaging KW - Potato starch KW - Purple sweet potato KW - pH indicator SP - 122 EP - 128 JF - Food chemistry JO - Food Chem VL - 218 N2 - A new colorimetric pH indicator film was developed using agar, potato starch, and natural dyes extracted from purple sweet potato, Ipomoea batatas. Both agar and potato starch are solid matrices used to immobilize natural dyes, anthocyanins. The ultraviolet-visible (UV-vis) spectrum of anthocyanin extract solutions and agar/potato starch films with anthocyanins showed color variations to different pH values (pH 2.0-10.0). Fourier transform infrared (FT-IR) and UV-vis region spectra showed compatibility between agar, starch, and anthocyanin extracts. Color variations of pH indicator films were measured by a colorimeter after immersion in different pH buffers. An application test was conducted for potential use as a meat spoilage sensor. The pH indicator films showed pH changes and spoilage point of pork samples, changing from red to green. Therefore, the developed pH indicator films could be used as a diagnostic tool for the detection of food spoilage. SN - 1873-7072 UR - https://www.unboundmedicine.com/medline/citation/27719887/Intelligent_pH_indicator_film_composed_of_agar/potato_starch_and_anthocyanin_extracts_from_purple_sweet_potato_ DB - PRIME DP - Unbound Medicine ER -