Application of Modified Atmosphere Packaging on Quality of by Achilleas Bouletis, Ioannis Arvanitoyannis, Dimitrios

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By Achilleas Bouletis, Ioannis Arvanitoyannis, Dimitrios Ntionias

This short seriously reports the utilized innovations in all of the studied greens and summarizes the impact of transformed surroundings packaging (MAP) in the entire caliber parameters. In a short creation chemical and microbiological parameters that impact shelf lifestyles are pointed out, through a definition of transformed surroundings packaging. The referred greens are classified into 10 different types: roots, tubers, leafy greens, fruits-vegetables, bulbs, stems and shoots, plant life, seeds, fungi and different. The influence of chosen MAP purposes at the shelf lifetime of the greens is usually highlighted. in addition to surroundings amendment, a number of garage parameters comparable to temperature, a number of pretreatments, movie permeability or gentle and darkish garage stipulations are studied and their interplay at the caliber of the product can be taken into consideration. The expanding call for for fitter and “safer” meals has led the meals in pursuit of garage applied sciences that might serve the first position of garage lifestyles prolongation yet with out sacrifice on dietary price and with no the presence of additions. MAP is a garage approach that has already confirmed to be powerful in extending the shelf lifetime of the product by means of decreasing breathing expense and protecting all its caliber features. as a result of many physiological components that impact the shelf lifetime of minimally processed greens (respiration expense, ethylene construction, maturation and ripening) the choice of definitely the right garage parameters (gas combination, garage temperature, packaging movie, and coverings ahead of packaging) of MAP is a hard process and needs to be deliberate carefully.

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2 % CO2 1. AMAP with N2 flush and 5 % O2 and 0 % CO2 2. ) cv. ) cv. Coolguard Lettuce Film with OTR: 504 mL O2 and CDTR: 2,507 mL CO2 25 μm/m2 day atm. Exposure to different light conditions: light (24 h), darkness (24 h) and photoperiod (12 h light and 12 h darkness) All the treatments were vacuum cooled 1. Perforated PP (22 μm) 2. PP (25, 30, 40 μm) Treated with chlorinated water (200 ppm total chlorine) for 10 min. Samples were either cut with a sharp knife or by hand 1. BOPP with OTR: 2,000–3,000 and CDTR: 6,000–7,000 2.

Monocytogenes with or without genes for glutamase decarboxylase resistance mechanism Treatment before packaging 8 °C for 9 days 4, 8 and 15 °C 4 and 8 °C—12 days Storage temperature (°C) and storage period (days) Color For butterhead lettuce razor sliced samples had significantly lower L. 2 log CFU/g) compared to hand torn ones or the samples cut with a blunt knife. 5 log CFU/g difference) The wild type L. 5 log CFU/g) on samples stored at 8 °C while during storage at 4 °C microbial load remained close to their initial numbers Microflora Textureweight loss Sensory analysis Mild processing techniques such as hand tearing or the use of a razor blade can result in reduced survival and growth of E.

5 % CO2) MAP on the sensory shelf life of butterhead lettuce leaves, stored at 5 and 10 °C. Lettuce leaves in PMAP, packaged and stored at 5 °C, resulted in considerably higher off-odor, wilting appearance, and 20 1 Application of Modified Atmosphere Packaging on Quality… presence of stains on the leaf surface or browning on the midribs than those in AMAP, thus indicating a higher rate of deterioration. 5–2 log CFU/g reduction) and coliform bacteria as well as yeast growth. The sensory quality of lettuce pieces was not adversely affected by this combined treatment when compared to control samples.

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