Simple and low-cost on-package sticker sensor based on litmus paper for real-time monitoring of beef freshness

Bambang Kuswandi, Fitria Damayanti, Jayus, Aminah Abdullah, Yook Heng Lee

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A simple sticker sensor has been constructed using litmus paper and tests have been conducted to detect the freshness of beef samples. The results show that the sticker sensor can be used to determine the degree of beef freshness, since the color change of the litmus paper and the quality degradation of the beef during storage time had a similar trend, where the decay of the beef could be detected clearly (when the red litmus paper changed to blue). The sticker sensor reacted accurately to the beef’s freshness in terms of pH change due to beef deterioration from pH 5.61 to 6.24 and from pH 5.67 to 6.02 as shown by its color change in real time at room and chiller temperature respectively. Thus, the sticker sensor can be used as an effective tool for monitoring the microbial quality of packaged fresh meat that correlates with the increased pH of the beef, where the total viable count (TVC) of 5 x 106 cfu/g or 6.698 log cfu/g correlates with a pH of 6.24. These levels were reached at 10 hrs and 7 days at room and chiller temperature respectively. This study provides a foundation for developing a simple sensor for beef freshness.

Original languageEnglish
Pages (from-to)236-251
Number of pages16
JournalJournal of Mathematical and Fundamental Sciences
Volume47
Issue number3
DOIs
Publication statusPublished - 2015

Fingerprint

Beef
freshness
beef
Monitoring
sensor
Real-time
Costs and Cost Analysis
Sensor
monitoring
sensors
Sensors
cost
Costs
Correlate
color
room temperature
deterioration
Deterioration
meat
Color

Keywords

  • Beef freshness
  • Litmus paper
  • Meat packaging
  • pH
  • Sticker sensor

ASJC Scopus subject areas

  • General

Cite this

Simple and low-cost on-package sticker sensor based on litmus paper for real-time monitoring of beef freshness. / Kuswandi, Bambang; Damayanti, Fitria; Jayus, ; Abdullah, Aminah; Lee, Yook Heng.

In: Journal of Mathematical and Fundamental Sciences, Vol. 47, No. 3, 2015, p. 236-251.

Research output: Contribution to journalArticle

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