Investigation of polyviologens as oxygen indicators in food packaging

Roberts, L. D.; Lines, Robert; Reddy, Subrayal M.; Hay, J. N.

doi:10.1016/j.snb.2010.09.047

Cited by 52 publications

(25 citation statements)

References 18 publications

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“…Methylene blue suffers from a slow reduction to its leuco form and a fast subsequent oxidation by oxygen present at low concentration; therefore, Hay et al [187] have chosen indicators which showed a much faster reduction after UV exposure, namely 2,2′-dicyano-1-1′-dimethy-4,4′-dipyridinium dimesylate and thionine ( 4b and 5b , respectively, Fig. 3).…”

Section: Absorption-based Indicatorsmentioning

confidence: 99%

Indicators for optical oxygen sensors

2012

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Continuous monitoring of oxygen concentration is of great importance in many different areas of research which range from medical applications to food packaging. In the last three decades, significant progress has been made in the field of optical sensing technology and this review will highlight the one inherent to the development of oxygen indicators. The first section outlines the bioanalytical fields in which optical oxygen sensors have been applied. The second section gives the reader a comprehensive summary of the existing oxygen indicators with a critical highlight on their photophysical and sensing properties. Altogether, this review is meant to give the potential user a guide to select the most suitable oxygen indicator for the particular application of interest.

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Section: Absorption-based Indicatorsmentioning

confidence: 99%

Indicators for optical oxygen sensors

2012

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“…Chemical CO2 sensors are in corporated with polymer or solid electrolytes and can be made portable to fit into microelectronicbased sys tems 49,50 . For the detection of O2, colorimetric meth ods based on pHbased dyes such as methylene blue, thionine and polyviologen electrochromic compounds were developed 51 . Many different types of O2 sensors are also available that adopt electrochemical, infrared, ultrasonic and laser technologies 52 .…”

Section: Metabolites As Quality-indicating Parametersmentioning

confidence: 99%

Application of biosensors in smart packaging

Park

Kim

Lee

et al. 2015

Mol. Cell. Toxicol.

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Smart packaging is an exponentially grow ing field in the food industry, encompassing various fields of technology to aid in controlling the environ ment and detecting changes in the headspace, and trac ing product history. Due to the frequent incidents of foodborne illnesses around the world, the major issues presently facing the industry involve ensuring the qual ity and the safety of its food products. Smart packaging, with builtin sensors and indicators, has been touted as a convenient technology to monitor freshness. In this review, we focus on current applications of sensors and/ or indicators that can detect the freshness of meat pro ducts in smart packaging, since the mechanisms of spo ilage are fundamentally similar in all types of meats. The prerequisites and principles of different types of currently available indicators/sensors for smart pack aging are addressed, and an approach to improve the current technology is discussed.

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“…A simple O 2 indicator system causes a colorless reduced species of methylene blue to revert to the original blue color with O 2 contact. This system had slow reduction and fast oxidation by O 2 compared with a polyviologen (electrochrome, titanium dioxide and EDTA) indicator with more anodic reduction potential to detect O 2 up to 4% (Roberts et al ., 2011).…”

Section: Advances In Film Componentsmentioning

confidence: 99%