고려대학교
Intelligent pH indicator film composed of agar/potato starch and anthocyanin extracts from purple sweet potato
펼치기 Authors and Affiliations
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.

주소복사
논문정보   
- 형식: Research article
- 게재일: 2017년 03월 (BRIC 등록일 2020-03-18)
- 연구진: 국내(교신)+국외 연구진태극기
- 분야: Agriculture, Food_Technology
- 피인용횟수: 최근 3년간 60회 이상 인용된 논문
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