Food Packaging Hygiene

Barone, Caterina; Bolzoni, Luciana; Caruso, Giorgia; Montanari, A.; Parisi, Salvatore; Steinka, Izabela

doi:10.1007/978-3-319-14827-4

Cited by 17 publications

(15 citation statements)

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“…Typically, the structure of tinplate is represented as a succession of layers including, starting from the outermost surface (Figure ): an ultrathin (<1 μm) chromium oxide layer formed by means of an electrochemical treatment in sodium dichromate and destined to a temporary atmospheric corrosion protection and as enhancer of paint adhesion a pure tin layer (0.2–1.6 μm) is generated in modern cans by electrochemical deposition.…”

Section: Introductionmentioning

confidence: 99%

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Chemical and morphological characterization of commercial tinplate for food packaging

Caiazzo

Brambilla

Montanari

et al. 2018

Surface & Interface Analysis

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The structure of tinplate is usually described as a sequence of layers involving an external tin layer (passivated by a chromate conversion coating), an intermediate FeSn2 layer, and the steel substrate. This structure description applies well to tinplate produced in the past by hot dipping but not necessarily to modern materials fabricated through tin electrodeposition and subsequent heat treatment. In this work, the chemical composition and the structure of 5 commercial tinplate materials have been investigated using Auger electron spectroscopy, scanning electron microscopy, 3D white light interferometry, and electrochemical chrono‐potentiometry. The study revealed that the intermediate layer consists indeed in a wide interface where tin, steel, and the FeSn2 alloy coexist. Moreover, the thickness of the Sn film varied locally significantly. A new tinplate structure was proposed in order to reliably appraise corrosion relevant features.

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Section: Introductionmentioning

confidence: 99%

“…Typically, the structure of tinplate is represented as a succession of layers 1,[4][5][6] including, starting from the outermost surface ( Figure 1):…”

Section: Introductionmentioning

confidence: 99%

Chemical and morphological characterization of commercial tinplate for food packaging

Caiazzo

Brambilla

Montanari

et al. 2018

Surface & Interface Analysis

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“…All solutions were prepared using doubly distilled water. Zn (CH3COO) 2 M using doubly distilled (DD) water.…”

Section: Methodsmentioning

confidence: 99%

“…Thus, the detection of these harmful metal ions has become very important from industrial, environmental and biological point of view. This is a challenging subject for analytical chemists due to the sensitivity, detection limits and acceptable toxicity levels set by global regulation bodies [1,2]. In addition, similar chemistry of heavy metals is fastidious with respect to selectivity of the determination method.…”

Section: Introductionmentioning

confidence: 99%

“…An ideal sensor should provide good sensitivity, high selectivity towards the target analyte, mathematical relationship of signal output to the amount of analyte, fast response time, good signal-to-noise ratio and longterm stability [7]. A variety of sensors have been developed, and these include DNAzymes sensors, optical sensors, electrochemical, colorimetric and fluorescent sensors [1][2][3][4][5][6][7][8][9][10] just to mention a few. This chapter aims to introduce the reader to the use of quantum dots (QDs) as metal ion sensors.…”

Section: Introductionmentioning

confidence: 99%

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Mn-Doped ZnSe Quantum Dots as Fluorimetric Mercury Sensor

Parani¹,

Tsolekile²,

May³

et al. 2018

Nonmagnetic and Magnetic Quantum Dots

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Quantum dots (QDs), because of their exciting optical properties, have been explored as alternative fluorescent sensors to conventional organic fluorophores which are routinely employed for the detection of various analytes via fluorometry. QD probes can detect toxic metal ions, anions, organic molecules with good selectivity and sensitivity. This chapter investigates the synthesis of Mn-doped ZnSe QDs using nucleation-doping strategy. The as-synthesized QDs were characterized by various analytical tools such as ultravioletvisible (UV-vis) absorption, photoluminescence (PL) spectroscopy, X-ray diffractometry (XRD) and transmission electron microscopy (TEM). It was found that Mn doping of QDs significantly increases the PL intensity. The PL of the resulting QDs was examined in the presence of different metal ions to check its selective response. Among the various metal . Thus, the present Mn-doped ZnSe QDs represent a simple, non-toxic fluorescent probe for the qualitative and quantitative detection of mercury ions in aqueous samples.

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Influence of side stripe on the corrosion of unlacquered tinplate cans for food preserves

Montanari

Zurlini

2017

Packag Technol Sci

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Metal containers are used for packaging foodstuffs; more specifically, the cans used for preserving fruit have a plain body with side seam protected by a lacquer film. The traditionally used side stripe is adopted “out of abundance of caution”, as the tin present on the seam is removed by the welding process. Not using a side stripe would have practical/functional benefits for the entire production chain, with consequent reduction in the cost of the containers and in their environmental impact. Packaging of medium‐acidity products in tinplate cans is based on the principle of cathodic protection of steel by tin. To ensure that this condition persists throughout the product's shelf life, it is necessary for the anode area to be larger than the cathode area. When the seam is protected with lacquer, this condition is met. In cans where no side stripe is applied on the inner seam, the cathode area increases; this could lead to an increase in corrosion rate and consequent reduction of shelf life. However, the use of tinplate with high tin coating weight (D 11.2 g/m2) can limit this effect, under suitable packaging conditions (absence of oxygen). The aim of this study is to analyze the possibility of using cans without lacquer stripe on the electric side seam for the packaging of fruit and, more generally, of medium‐acidity products. Electrochemical measurements of model‐systems, and pack tests were used in the study.

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Food Packaging Hygiene

Cited by 17 publications

References 0 publications

Chemical and morphological characterization of commercial tinplate for food packaging

Chemical and morphological characterization of commercial tinplate for food packaging

Mn-Doped ZnSe Quantum Dots as Fluorimetric Mercury Sensor

Influence of side stripe on the corrosion of unlacquered tinplate cans for food preserves

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