Modified Atmosphere Packaging of Cut Welsh Onion: Effect of Micro-Perforated Polypropylene Film Packaging on Chemical Components and Quality Stability of the Vegetable.

Freshly harvested bulbs of fennel (Foeniculum vulgare var. dulce) `Clio' were sliced at 5 °C, dipped in 100 mg·L–1 NaOCl solution, and packaged in passive modified atmosphere packaging (MAP) by using trays covered and thermal sealed with unperforated or perforated polypropylene film. According to common commercial needs a shelf life of 14 d at 0 and 5 °C was applied. The respiration rate of fresh-cut fennel was 1.3- to 1.7-fold higher at 5 °C than at 0 °C, and was 1.4- to 1.8-fold higher than that reported for whole bulbs. MAP did not prevent the declines in SSC and TA that occurred during storage, while pH did not change. Water loss was lower than 0.1% in all treatments, and no decay or physiological disorders developed during storage. The gas compositions of 16 to 18 kPa O2 plus 2 to 4 kPa CO2 generated within the perforated packages at 0 and 5 °C or 1.5 to 2 kPa O2 plus 18 to 20 kPa CO2 in unperforated packages at 5 °C did not inhibit browning on the cut surface or other sensory changes of the slices. However, atmospheres in unperforated packages of 4 to 6 kPa O2 plus 10 to 14 kPa CO2 at 0 °C maintained the sensory quality like at harvest.

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Minimal Processing and Modified Atmosphere Packaging of Carrot Discs: Effects of Packaging Film and Product Weight

International Journal of Food Processing Technology ◽

10.15379/2408-9826.2015.02.01.5 ◽

2015 ◽

Vol 2 (1) ◽

pp. 31-38 ◽

Cited By ~ 1

Author(s):

Okan Esturk ◽

◽

Zehra Ayhan ◽

Tolga Gokkurt

Keyword(s):

Modified Atmosphere Packaging ◽

Modified Atmosphere ◽

Packaging Film ◽

Minimal Processing ◽

Product Weight

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EFFECT OF SODIUM LACTATE ON QUALITY OF LIGHTLY SALTED FISH IN OXYGEN FREE PACKAGING

VESTNIK OF ASTRAKHAN STATE TECHNICAL UNIVERSITY SERIES FISHING INDUSTRY ◽

10.24143/2073-5529-2017-3-128-137 ◽

2017 ◽

pp. 128-137

Author(s):

Elena Yuryevna Porotikova ◽

Boris Lazarevich Nekhamkin ◽

Mikhail Pavlovich Andreev

Keyword(s):

Modified Atmosphere Packaging ◽

Storage Period ◽

Sodium Lactate ◽

Vacuum Packaging ◽

Storage Life ◽

Clupea Harengus ◽

Modified Atmosphere ◽

Salted Fish ◽

Baltic Herring ◽

Organoleptic Characteristics

The present article investigates the effect of sodium lactate on microbiological, physico-chemical and sensory characteristics of lightly salted Pacific herring ( Clupea pallasii ) and Baltic herring ( Clupea harengus membras ) during refrigerated storage 5 ± 0.3°C. There have been analyzed different processing methods of lightly salted samples of Pacific and Baltic herring: control (without sodium lactate), and experiment (3% sodium lactate), both in vacuum packaging and modified atmosphere packaging (MAP - 40% CO2/60% N2). For vacuum and MAP there were used bags with low oxygen permeability (3 cm3/m2/day). It was found that 3% sodium lactate keeps firmness of the texture of salted fish muscle and reduces the release of water into the package during storage. Adding 3% sodium lactate reduces the value of the water activity in lightly salted Pacific and Baltic herring by 0.01-0,012 units. The lowest pH (0.02 units) was registered in samples without sodium lactate packed in MAP. Organoleptic signs of spoilage in fish without sodium lactate appeared much earlier, and using 3% sodium lactate both in vacuum and in MAP helped protect and improve organoleptic characteristics of the product during storage. Total biological semination of experimental samples packed in MAP kept at the very low level during the whole storage period, i.e. combined effect of using 3% sodium lactate and MAP inhibited microbial growth. This combination allows to reduce twice the rate of accumulation nitrogen in terminal amino-groups and to increase 1.5-2 times storage life of lightly salted Pacific and Baltic herring, compared to their storage life in vacuum packaging without sodium lactate. The results obtained allow us to recommend using sodium lactate in production of lightly salted fish in oxygen-free packaging, especially in modified atmosphere packaging (40% CO2/60% N2).

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