Real time on-package freshness indicator for guavas packaging

Bambang Kuswandi, Chrysnanda Maryska, Jayus, Aminah Abdullah, Yook Heng Lee

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

A novel on-package color indicator has been fabricated based on bromophenol blue, and tests have been conducted to assess the freshness of guava (Psidium guajava L.). Bromophenol blue (BPB) was immobilized onto bacterial cellulose membrane via absorption method. The BPB/cellulose membrane as color indicator works based on pH decrease as the volatile organic compounds (e.g. acetic acid), produced gradually in the package headspace during developing of guava. Subsequently the color of the indicator will change from blue to green for over-ripe indication, which can be visible to the naked eye. The results showed that the color indicator could be used to determine the state of freshness of the guava at ambient condition (28-30 °C). The color change of the indicators reflects the pH of headspace of the guava packaging. Furthermore, it also in similar trends to the change of several parameters (soluble solids content, texture and sensory evaluation) that normally used to characterize the freshness of guava. Therefore, the indicator can be used for real time visual monitoring of freshness state of packaged guavas.

Original languageEnglish
Pages (from-to)29-39
Number of pages11
JournalJournal of Food Measurement and Characterization
Volume7
Issue number1
DOIs
Publication statusPublished - Mar 2013

Fingerprint

Psidium
Psidium guajava
guavas
freshness
Product Packaging
Bromphenol Blue
packaging
Packaging
Color
color
Cellulose
headspace analysis
cellulose
Membranes
Volatile Organic Compounds
volatile organic compounds
total soluble solids
Volatile organic compounds
Acetic acid
Acetic Acid

Keywords

  • Bromophenol blue
  • Freshness indicator
  • Fruit packaging
  • Guava

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering
  • Safety, Risk, Reliability and Quality
  • Food Science

Cite this

Real time on-package freshness indicator for guavas packaging. / Kuswandi, Bambang; Maryska, Chrysnanda; Jayus; Abdullah, Aminah; Lee, Yook Heng.

In: Journal of Food Measurement and Characterization, Vol. 7, No. 1, 03.2013, p. 29-39.

Research output: Contribution to journalArticle

Kuswandi, Bambang ; Maryska, Chrysnanda ; Jayus ; Abdullah, Aminah ; Lee, Yook Heng. / Real time on-package freshness indicator for guavas packaging. In: Journal of Food Measurement and Characterization. 2013 ; Vol. 7, No. 1. pp. 29-39.
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