Search results for "SHELF-LIFE"

A Multi objective inventory model for short food supply chains

2017

Over the past 50 years, vertically integrated multinationals dominated global food markets by providing huge product diversity at low prices. Such systems are characterized by long supply chains capable of achieving high cost efficiencies resulting from the use of cheap raw materials, high chemical inputs, industrial shelf-life extension processes, economies of scale and mechanization. This dominant position on the market, however, has been achieved at a heavy cost on the global environment, generated by massive food wastage, and by a steady supply of fossil fuels. For such reasons, global supply chains are considered unsustainable and new food systems are being promoted in order to replace…

Monitoring the Shelf-Life of Minimally Processed Fresh-Cut Apple Slices By Physical–Chemical Analysis and Electronic Nose

2014

Fresh-cut apples, in slices or in cubes, are minimally processed products, which are currently collecting a great interest by fruit marketers for their promising diffusion. Their shelf life, from a microbiological point of view, has been fixed about 2 or 3 weeks under refrigeration. However in a few days they undergo biochemical degradations with production of off-flavors and texture breakdown. In this work, the change of aromatic fingerprint of apple slices packaged in air and in a modified atmosphere (with 100% N2) and stored at 4°C was measured, by using a commercial electronic nose. The obtained data were also compared with sensory evaluation of judge’s panel. Moreover, quality paramete…

A new approach to predict the fish fillet shelf-life in presence of natural preservative agents

2017

Three data sets concerning the behaviour of spoilage flora of fillets treated with natural preservative substances (NPS) were used to construct a new kind of mathematical predictive model. This model, unlike other ones, allows expressing the antibacterial effect of the NPS separately from the prediction of the growth rate. This approach, based on the introduction of a parameter into the predictive primary model, produced a good fitting of observed data and allowed characterising quantitatively the increase of shelf-life of fillets.

Effect of Opuntia ficus-indica Mucilage Edible Coating in Combination with Ascorbic Acid, on Strawberry Fruit Quality during Cold Storage

2021

Strawberry fruit is a nonclimacteric fruit and is one of the most consumed berries in the world. It is characterized by high levels of vitamin C, folate, vitamin E, β-carotene, and phenolic constituents as well asanthocyanins that are strictly related to health benefits. Strawberries are highly perishable fruit with a very short postharvest life due to their susceptibility to mechanical injury, rapid texture softening, physiological disorders, and infection caused by several pathogens (yeast and mold) that can rapidly reduce fruit quality. The aim of the present study was to evaluate the effect of the application of Opuntia ficus-indica mucilage in combination with ascorbic acid, as edible …

Squid (Sepia officinalis) stored in active packaging: chemical and microbiological changes

2005

The effect of modified atmosphere packaging (MAP) with and without a moisture adsorbent, on the quality of squid (Sepia officinalis) during chilled storage, was evaluated. Chemical and microbiological tests were carried out to measure the amount of spoilage and the resulting loss of fish freshness during 12 days of storage at 3°C. After 11 days, trimethylamine nitrogen (TMA-N) increased from 0.4 mg/100 g in fresh samples to 24 mg/100 g in MAP with adsorbent and 35 mg/100 g in the other samples. Total volatile basic nitrogen (TVB-N) increased from 18 mg/100 g in fresh samples to 112 mg/100 g in MAP with adsorbent and 158 mg/100 g in control samples. Counts of aerobic psychrotrophic microorga…

Attitudine alla frigo-conservazione di frutti di pesco (Prunus Persica L. Batsch) a polpa bianca

2014

Quality changes during postharvest life in white fleshed peach (Prunus Persica L. Batsch) fruits: Preliminary observations

2016

Sicilian white flesh peach fruits ecotypes are characterized by a persistent aroma and excellent flavor that is highly appreciated by consumers. Nevertheless, they reach only regional markets, because of fruit sensitivity to decay and the poor information about their postharvest physiology and shelf-life. In this trial, we studied quality changes during postharvest life of non-melting white-flesh peach ecotypes ‘Tudia’, ‘Bella di Bivona’ and the cultivar ‘Daniela’. Fruits were collected at commercial ripening: a first group was submitted to analytical evaluations and another one was stored (2°C, 90% RH) for 32 days. During this storage period, fruits were submitted to four shelf-life period…

CARATTERIZZAZIONE DEL PROFILO QUALITATIVO DI CONDIMENTI A BASE DI OLI EXTRAVERGINI AROMATIZZATI CON OLI ESSENZIALI

Gelso: disidratazione ad essiccazione ad aria calda per la sua conservazione

2020

L’obiettivo di questo lavoro è stato quello di valutare la possibilità di disidratare con aria calda frutti di gelso, cercando di ottenere un prodotto nuovo contribuendo alla risoluzione dei problemi legati alla sua diffusione. L’obiettivo di questo lavoro è stato quello di valutare la possibilità di disidratare con aria calda frutti di gelso, cercando di ottenere un prodotto nuovo contribuendo alla risoluzione dei problemi legati alla sua diffusione.

Effects of xanthan gum and calcium ascorbate treatments on color and nutritional quality of fresh cut pear fruit

2023

Edible coatings may be used to extend the shelf life of fresh-cut fruit products by controlling respiration and transpiration reducing overall quality decay. In this study, the effects of xanthan gum, combined with calcium ascorbate treatment, on color and nutritional quality of fresh-cut pear fruit were investigated. Fresh-cut pear fruit were processed with dipping for 4 different treatments: 2% xanthan gum solution with 2% calcium ascorbate (XAC); 2% xanthan gum solution (XAN); 2% ascorbate calcium solution (CAL) and distilled water for control (CTR). Fruit treated were stored at 5°C for 3, 5, 7 and 10 days. At each storage period, visual quality and flavor score, ascorbic acid and phenol…