scholarly journals Review on Natural Preservatives for Extending Fish Shelf Life

Foods ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 490 ◽  
Author(s):  
Jun Mei ◽  
Xuan Ma ◽  
Jing Xie

Fish is extremely perishable as a result of rapid microbial growth naturally present in fish or from contamination. Synthetic preservatives are widely used in fish storage to extend shelf life and maintain quality and safety. However, consumer preferences for natural preservatives and concerns about the safety of synthetic preservatives have prompted the food industry to search natural preservatives. Natural preservatives from microorganisms, plants, and animals have been shown potential in replacing the chemical antimicrobials. Bacteriocins and organic acids from bacteria showed good antimicrobial activities against spoilage bacteria. Plant-derived antimicrobials could prolong fish shelf life and decrease lipid oxidation. Animal-derived antimicrobials also have good antimicrobial activities; however, their allergen risk should be paid attention. Moreover, some algae and mushroom species can also provide a potential source of new natural preservatives. Obviously, the natural preservatives could perform better in fish storage by combining with other hurdles such as non-thermal sterilization processing, modified atmosphere packaging, edible films and coatings.

Foods ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 940
Author(s):  
Michael G. Kontominas ◽  
Anastasia V. Badeka ◽  
Ioanna S. Kosma ◽  
Cosmas I. Nathanailides

Seafood products are highly perishable, owing to their high water activity, close to neutral pH, and high content of unsaturated lipids and non-protein nitrogenous compounds. Thus, such products require immediate processing and/or packaging to retain their safety and quality. At the same time, consumers prefer fresh, minimally processed seafood products that maintain their initial quality properties. The present article aims to review the literature over the past decade on: (i) innovative, individual packaging technologies applied to extend the shelf life of fish and fishery products, (ii) the most common combinations of the above technologies applied as multiple hurdles to maximize the shelf life of seafood products, and (iii) the respective food packaging legislation. Packaging technologies covered include: Modified atmosphere packaging; vacuum packaging; vacuum skin packaging; active food packaging, including oxygen scavengers; carbon dioxide emitters; moisture regulators; antioxidant and antimicrobial packaging; intelligent packaging, including freshness indicators; time–temperature indicators and leakage indicators; retort pouch processing and edible films; coatings/biodegradable packaging, used individually or in combination for maximum preservation potential.


Author(s):  
Razieh Niazmand ◽  
Samira Yeganehzad

Abstract Background Barberry has long been used as an herbal remedy since ancient times which is found throughout temperate and subtropical regions of the world. Given the short harvesting season and limited shelf life of the barberry, we evaluated the possibility of using modified atmosphere packaging and oxygen-scavenger sachets to increase its storage period. For this purpose, the physicochemical characterization (antioxidant activity, anthocyanin, phenolic compounds, and ascorbic acid content, acidity, firmness, color, and decay incident) of fresh barberry samples packaged within different atmospheres was investigated over 4 weeks of storage at 4 and 25 °C. The barberries were packaged with low-density polyethylene/polyester (LDPE/PET) films under natural atmosphere (C), N2 gas (N), vacuum (V), or in the presence of an oxygen scavenger (OS). Results The results revealed that with increased storage period, the O2 and CO2 levels inside the packages decreased and increased, respectively. The antioxidant activity and amounts of anthocyanin, phenolic compounds, and ascorbic acid all decreased with increasing storage period. Among the studied atmospheres, the OS and, subsequently, V packages were most capable of maintaining the quality of fresh barberries, with the decay incidence being approximately 30 times lower inside these packages relative to the control. Increasing the storage temperature accelerated the intensity of chemical changes and decay across all samples. Conclusion The barberries inside the OS packages stored at 4 °C (and even at 25 °C) still had good sensory properties in terms of chemical properties, texture, and color after 4 weeks. Fortunately, it seems that this packaging technology makes the exportation and delayed consumption of the fresh barberry possible by maintaining its quality.


Foods ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1754
Author(s):  
Anlaug Ådland Hansen ◽  
Solveig Langsrud ◽  
Ingunn Berget ◽  
Mari Øvrum Gaarder ◽  
Birgitte Moen

Improved quality control and prolonged shelf life are important actions in preventing food waste. To get an overview of the bacterial diversity of fillets from live stored mature Atlantic cod, bacterial isolates were identified before and after storage (air and vacuum) and freezing/thawing. Based on the load of dominating bacteria, the effect of different packaging methods and a short freezing/thawing process on prolonged shelf-life was evaluated (total viable counts, bacteriota, sensory attributes, and volatile components). Hand filleted (strict hygiene) cod fillets had a low initial bacterial load dominated by the spoilage organism Photobacterium, whereas industrially produced fillets had higher bacterial loads and diversity (Pseudomonas, Arthrobacter, Psychrobacter, Shewanella). The identified bacteria after storage in vacuum or air were similar to the initially identified bacteria. Bacteriota analysis showed that a short time freezing/thawing process reduced Photobacterium while modified atmosphere packaging (MAP; 60%CO2/40%O2 or 60%CO2/40%N2) inhibited the growth of important spoilage bacteria (Photobacterium, Shewanella, Pseudomonas) and allowed the growth of Carnobacterium/Carnobacteriaceae and Acinetobacter. Despite being dominated by Photobacterium, fresh fillets stored in MAP 60%CO2/40%N2 demonstrated better sensory quality after 13 days of storage than fillets stored in MAP 60%CO2/40%O2 (dominated by Carnobacterium/Carnobacteriaceae). Carnobacterium spp. or other members of Carnobacteriaceae may therefore be potential spoilage organisms in cod when other spoilage bacteria are reduced or inhibited.


2009 ◽  
Vol 92 (3) ◽  
pp. 887-894 ◽  
Author(s):  
A. Conte ◽  
D. Gammariello ◽  
S. Di Giulio ◽  
M. Attanasio ◽  
M.A. Del Nobile

2016 ◽  
Vol 5 (3) ◽  
Author(s):  
Carlo Pala ◽  
Christian Scarano ◽  
Massimiliano Venusti ◽  
Daniela Sardo ◽  
Daniele Casti ◽  
...  

<em>Ricotta fresca</em> cheese is the product of Sardinian dairy industry most exposed to microbial post-process contamination. Due to its technological characteristics, intrinsic parameters, pH (6.10-6.80) and water activity (0.974-0.991), it represents an excellent substrate for the growth of spoilage and pathogenic microorganisms, which are usually resident in cheese-making plants environments. Generally, <em>ricotta fresca</em> has a shelf life of 5-7 days. For this reason, at industrial level, modified atmosphere packaging (MAP) is used to extend the durability of the product. However, few investigations have been conducted to validate the use of MAP in <em>ricotta fresca</em>. The aim of this work is to evaluate the shelf life of <em>ricotta fresca</em> under MAP. A total of 108 samples were collected from three Sardinian industrial cheese-making plants and analysed within 24 h after packaging and after 7, 14 and 21 days of refrigerated storage. Aerobic mesophilic bacteria, mesophilic and thermophilic cocci and lactobacilli, <em>Enterobacteriaceae</em> and <em>E. coli</em>, <em>L. monocytogenes</em>, <em>Pseudomonas</em> spp., <em>Bacillus cereus</em>, yeasts and moulds, and the chemicalphysical parameters and composition of the product were determined. At the end of the shelf life, <em>Pseudomonas</em> spp. and Enterobacteriaceae reached high concentrations, 5 to 7 and 3 to 6 log<sub>10</sub> colony forming unit g<sup>–1</sup>, respectively. The presence of environmental contaminants indicates that the use of MAP without the appropriate implementation of prerequisite programmes is not sufficient to extend the durability of <em>ricotta fresca</em>. Gas mixture and packaging material should be selected only on the basis of scientific evidence of their effectiveness.


Author(s):  
Sara Ugolotti ◽  
Giuseppe Vignali

"The aim of this work is to evaluate the shelf life of cow’s ricotta under MAP (Modified Atmosphere Packaging). MAP is a packaging technique commonly used in the food industry in order to control the microbial growth. After the extraction of the air present in the headspace of the package, a mixture of CO2, O2 and N2 in different percentage is usually introduced before the packaging sealing. Based on these premises, a design of experimental tests has been created in order to evaluate the effect of each process parameters. To perform these test, it is also required the creation of thermoformed trays (made with a multilayer material using PET/EVOH/PE) in which the ricotta was inserted and packaged in a modified atmosphere. After the time intervals established in the experimental program, the analysis of the MAP was carried out using a special instrument (“Oxybaby” made by Witt SpA), able to measure the quantity of gas present in the headspace of the thermoformed trays. Then a statistical analysis of the obtained results was carried out. The results showed that after 10 days the product was edible for all types of atmosphere, but at 20 and, especially, at 30 days, even in the trays wrapped with CO2, the product was not acceptable for human consumption. One of the possible solutions, in order to lengthen the shelf life of cow’s ricotta, consists in the pre-sterilization of the trays before the product packaging with a solution of H2O2."


2013 ◽  
Vol 37 (4) ◽  
pp. 729-736 ◽  
Author(s):  
Mohammad Mizanur Rahman ◽  
Md Miaruddin ◽  
Md. Golam Ferdous Chowdhury ◽  
Md. Hafizul Haque Khan ◽  
MA Matin

The experiment was conducted to evaluate the effect of packaging materials on the quality and shelf life of green chili (Capsicum annuum) using passive modification of modified atmosphere packaging system. The modified atmosphere was created by making perforation in the polypropylene packets. Green chili pre-treated with chlorine water and then packaging in 0.3% perforated polypropylene packet resulted substantial reduction of weight loss and rotting/shriveling. These treatment combinations also considerably retained vitamin C, ß-carotene, moisture content, etc. Under this condition the retention of quality and shelf life of green chili could be extended up to 10 days at ambient condition as compared to non-treated and without packaging. DOI: http://dx.doi.org/10.3329/bjar.v37i4.14397 Bangladesh J. Agril. Res. 37(4): 729-736, December 2012


Author(s):  
Manzoor Ahmad Shah ◽  
Sajad Mohd Wani ◽  
Shaiq Ahmad Ganai ◽  
Shabir Ahmad Mir ◽  
Tariq Ahmad ◽  
...  

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