EFFECT OF A BIODEGRADABLE POLYMER PACKING ON THE QUALITY OF MEAT PRODUCTS

2019 ◽  
Author(s):  
К.Е. БЕЛОГЛАЗОВА ◽  
A.A. Ульянин ◽  
А.Д. Горневская ◽  
А.А. Рогожин
Keyword(s):  
Shelf Life ◽  
Control Sample ◽  
Meat Products ◽  
Storage Period ◽  
Film Coating ◽  
Test Sample ◽  
Biodegradable Film ◽  
Anaerobic Microorganisms ◽  
Meat Spoilage ◽  
Entire Storage Period

Разработано биодеградабельное пленочное покрытие (БПП), состоящее из ксантана, карбоксиметилцеллюлозы, лецитина и воды для пищевого применения. Установлено, что в процессе хранения в опытных образцах свинины, упакованных в БПП, потери массы сократились с 2,16 до 0,21 (норма до 0,30). Срок хранения образцов охлажденной свинины, упакованных в биодеградабельную пленку, увеличился c 2 до 5 сут. Определено, что все упакованные образцы свинины оставались свежими в течение 5 сут хранения. В процессе хранения свинины в опытном образце на 3и сут отмечено уменьшение количества КМАФАнМ в 2 раза. На 10е сут хранения количество КМАФАнМ было также в 2 раза меньше в опытном образце, упакованном в БПП, чем в контрольном образце без пленки. В контрольном образце на 3и сут выявлены бактерии рода Proteus, что свидетельствовало о начале гнилостных процессов в мясе (порчи). В опытных образцах бактерии рода Proteus обнаружены на 5е сут. Определены режимы хранения свинины, упакованной в БПП: температура воздуха 02С, относительная влажность 8590, скорость движения воздуха 0,20,3 м/с. Данные параметры позволяют пролонгировать срок хранения упакованного в БПП мяса до 5 сут. A biodegradable film coating consisting of xanthan, carboxymethyl cellulose, lecithin and water for food use has been developed. It was found that during storage of pork, packaged in this biodegradable film, the weight loss of experimental samples decreased from 2,16 down to 0,21 (norm up to 0,30). The shelf life of samples of chilled pork, packaged in a biodegradable film, increased from 2 to 5 days. Sensory analysis showed that all packaged pork samples were fresh throughout the entire storage period 5 days. Reduction in 2 times of the numbers of mesophilic aerobic and optional anaerobic microorganisms in the test samples was observed during the storage of pork on the 3rd day. During 10 days of storage, the number of these bacteria was also 2 times less in the test sample packed in biodegradable film than in the control sample without film. In the control sample on day 3 revealed bacteria of the genus Proteus, indicating the beginning of putrefactive processes in meat (spoilage). The presence of bacteria of the genus Proteus was found in the test samples on day 5 only. The storage modes of pork packaged in a biodegradable film coating were determined: air temperature 02С, relative humidity 8590, air velocity 0,20,3 m/s. These parameters allow prolong the shelf life of meat up to 5 days.

The Influence of Flexible Film with Releasing Sulfur Dioxide on Quality of 'Vitis labruscana Kyoho' Table Grapes

2012 ◽  
Vol 200 ◽  
pp. 305-311
Author(s):  
Dong Li Li ◽  
Wen Cai Xu ◽  
Zun Zhong Liu ◽  
Ya Bo Fu ◽  
Ya Jun Wang
Keyword(s):  
Sulfur Dioxide ◽  
Shelf Life ◽  
Water Loss ◽  
Control Sample ◽  
Storage Period ◽  
Soluble Solids ◽  
Total Acid ◽  
Table Grapes ◽  
Vitis Labruscana

An active packaging film (APF1) with releasing low concentration sulfur dioxide (SO2) was tested on quality of ‘vitis labruscana kyoho’ table grape. All samples were stored at 5°C and during the storage period the main quality parameters, weight loss, berries shatter, decay, firmness, total soluble solids content (TSS), total acid (TA, using the PH of grape juice instead of the TA ), Vitamin c (Vc) content were monitored and compared with the control sample unpacked in any film. Results demonstrated that APF1 could reduce water loss of table grapes, prevent it from pathogens infection. The results also showed that APF1 could greatly guarantee a long shelf life for grape. After storage 56 days (storage at 0~5°C), the water loss, berry firmness, TA and Vc content in grapes packaged in APF1 were slowly reduced, TSS was slight increased, percentage of shatter and decayed berries of grapes were 22% and 27%, respectively. The percentage of berries decay of grapes packaged in APF1 was reduced to 5% from 21% for control batches on 11th days. All unpackaged table grapes (control batches) were decayed after 28 days. APF1 would help to preserve quality and extend shelf life of table grapes.

scholarly journals The Effect of Electrospun Polycaprolactone Nonwovens Containing Chitosan and Propolis Extracts on Fresh Pork Packaged in Linear Low-Density Polyethylene Films

Foods ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 1110
Author(s):  
Emeli Vargas Romero ◽  
Loong-Tak Lim ◽  
Héctor Suárez Mahecha ◽  
Benjamin M. Bohrer
Keyword(s):  
Shelf Life ◽  
Meat Products ◽  
Storage Period ◽  
Active Packaging ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Refrigerated Storage ◽  
Linear Low Density Polyethylene ◽  
Oxidation Reactions ◽  
Propolis Extract

Fresh meat products are highly perishable and require optimal packaging conditions to maintain and potentially extend shelf-life. Recently, researchers have developed functional, active packaging systems that are capable of interacting with food products, package headspace, and/or the environment to enhance product shelf-life. Among these systems, antimicrobial/antioxidant active packaging has gained considerable interest for delaying/preventing microbial growth and deteriorative oxidation reactions. This study evaluated the effectiveness of active linear low-density polyethylene (LLDPE) films coated with a polycaprolactone/chitosan nonwoven (Film 1) or LLDPE films coated with a polycaprolactone/chitosan nonwoven fortified with Colombian propolis extract (Film 2). The active LLDPE films were evaluated for the preservation of fresh pork loin (longissimus dorsi) chops during refrigerated storage at 4 °C for up to 20 d. The meat samples were analyzed for pH, instrumental color, purge loss, thiobarbituric acid reactive substances (TBARS), and microbial stability (aerobic mesophilic and psychrophilic bacteria). The incorporation of the propolis-containing nonwoven layer provided antioxidant and antimicrobial properties to LLDPE film, as evidenced by improved color stability, no differences in lipid oxidation, and a delay of 4 d for the onset of bacteria growth of pork chops during the refrigerated storage period.

scholarly journals Pre-treatment Effect on Physical and Microbial Parameters of Smoked Baltic Sprats

2021 ◽  
Vol 46 (341) ◽  
pp. 22-30
Author(s):  
Santa Puke ◽  
Ruta Galoburda
Keyword(s):  
Shelf Life ◽  
Unsaturated Fatty Acids ◽  
Control Sample ◽  
Physical Parameters ◽  
Anaerobic Microorganisms ◽  
Smoked Fish ◽  
Product Consumption ◽  
Microbiological Parameters ◽  
Valuable Product ◽  
Pre Treatment

Abstract Smoked sprats are delicious and nutritionally valuable product. Besides protein, it contains high amount of unsaturated fatty acids and fat soluble vitamins. Nowadays, human interest for fish product consumption is increasing. It leads to the demand for increased shelf life of the smoked sprats. One way to prolong the shelf life is to use some pre-treatment prior to smoking. The aim of study was to analyse the effect of pre-treatment on smoked Baltic sprat quality and microbiological parameters. Various compositions of brine using salts (NaCl, CaCl2) and acetic acid in different proportions were used for fresh sprat pre-treatment. Pre-treatment had the influence on physical parameters; pre-treated samples had higher salt and lower moisture content, and lower pH, which allowed prolonging the shelf life of smoked sprats. The highest pH was in the control sample 6.6, and it allowed growth of yeasts, moulds, Pseudomonas spp., and mesophilic and facultative anaerobic microorganisms. The results demonstrated that after two-week storage of the smoked sprats the growth of moulds (1×102 CFU g−1) was observed only for smoked sprats without pre-treatment (control sample), indicating the positive effect of pre-treatment. Salmonella spp., Clostridium perfingens, Listeria monocytogenes, and Escherichia coli were not detected in any of the analysed samples. After pre-treatment in brine, containing combination of NaCl and CaCl2, smoked fish had darker colour compared to control sample or sample with sodium chloride only. Any of applied pre-treatments, except brine containing NaCl, made firmer texture of the smoked fish.

scholarly journals INVESTIGATION OF THE PROPERTIES OF MARMALADE WITH PLANT CRYOADDITIVES DURING STORAGE

2018 ◽  
Vol 12 (1) ◽  
Author(s):  
N. Shmatchenko ◽  
M. Artamonova ◽  
O. Aksonova ◽  
S. Oliinyk
Keyword(s):  
Antioxidant Capacity ◽  
Shelf Life ◽  
New Technologies ◽  
Antioxidant Properties ◽  
Control Sample ◽  
Storage Period ◽  
Storage Conditions ◽  
Organoleptic Characteristics ◽  
Physico Chemical ◽  
Reducing Substances

This article presents the results of studies of the properties of marmalade with natural plant cryoadditives during storage for 3 months (90 days). To improve the organoleptic characteristics and antioxidant properties of marmalade, plant additives of cryogenic origin were used, namely cryopastes from quince, apple, carrot, pumpkin, grapes, and cryopowders from rose hips, sea buckthorn, and grapes. It is shown that the use of plant cryoadditives makes it possible to increase the biological value and antioxidant properties of new types of marmalade. For new types of marmalade with cryoadditives, during its shelf life, these properties have not been studied earlier. However, it should be noted that such studies are necessary and relevant for solving the problem of preserving the quality indicators and antioxidant capacity of marmalade with cryoadditives. New kinds of marmalade have high organoleptic characteristics during the whole storage period. It is shown that the storage conditions of marmalade, according to current regulatory documentation, are suitable for new marmalade products, since the physico-chemical and microbiological indicators vary, but remain within acceptable limits. Thus, the moisture content decreases to almost 31%, the acidity rises by 12–16%, compared to freshly prepared samples. The content of reducing substances increases by 30–64%. It is determined that the value of the antioxidant capacity of all the samples developed is much higher – almost 2.3–8 times than the same figure for the control sample. After the storage period, the antioxidant capacity is reduced by 15–35%, but this data also significantly exceeds the antioxidant capacity of the control sample. Storage of marmalade with cryopastes and cryopowders for 90 days is possible, since all the basic physico-chemical, microbiological, and organoleptic indicators at the end of shelf life meet the requirements. Indicators of antioxidant capacity for them also remain at a fairly high level. New technologies of jelly-fruit marmalade with plant cryoadditives have been introduced at 4 enterprises. 2 utility model patents have been received, and regulatory documents have been developed and approved for the manufacture of new jelly products.

scholarly journals Xanthan-based biodegradable packaging for fish and meat products

2020 ◽  
Vol 8 (1) ◽  
pp. 67-75
Author(s):  
Tatiana Giro ◽  
Kristina Beloglazova ◽  
Gulsara Rysmukhambetova ◽  
Inna Simakova ◽  
Lidiya Karpunina ◽  
...  
Keyword(s):  
Mass Loss ◽  
Shelf Life ◽  
Fatty Acid Content ◽  
Meat Products ◽  
Environmentally Friendly ◽  
Food Products ◽  
Packaging Materials ◽  
Biodegradable Film ◽  
Positive Effects ◽  
Biodegradable Packaging

Nowadays, the development of environmentally-friendly packaging materials is relevant worldwide. Biodegradable packaging materials are promising due to their safety and ability to extend shelf life of food products. This study aimed to investigate the properties of biodegradable film based on a bacterial exopolysaccharide (xanthan) with the view to extend the quality and shelf life of chilled meat products. We studied pork and carp samples packed in biodegradable film and stored at 0–2°C. Biodegradable packaging had positive effects on sensory, physicochemical, and microbiological parameters, as well as on ecological safety of the raw materials. During storage of packed chilled pork, its mass loss decreased from 2.16 to 0.21% (norm to 0.30%), and water activity reduced from 0.985 to 0.960, which had a positive effect on the microbiological resistance of pork during storage. The use of biodegradable film contributed to the preservation of quality and freshness of carp, which was confirmed by sensory and microbiological indicators. Total microbial contamination in carp packed in biodegradable film was significantly lower than that in unpacked samples, which extended its shelf life for one day compared to control. Biodegradable packaging also allowed mass loss and pH value to decrease during storage and inhibited oxidation processes in the samples under study. Free fatty acid content decreased by a factor of two, and peroxides, by 7%. Thus, biodegradable films can be effective film coatings to use in the food industry. This method of packaging not only preserves the functional and technological properties of food products, lowers their mass loss, and extends their shelf life, but also reduces costs and is environmentally friendly.

scholarly journals Quality of Refrigerated Tilapia (Oreochromis niloticus) Slices under Vacuum and Modified Atmosphere Packaging

2020 ◽  
Vol 15 (3) ◽  
pp. 99
Author(s):  
Md. Abdul Karim ◽  
Masudur Rahman ◽  
Esmout Jahan Alice ◽  
Md. Amanullah ◽  
Md. Akhtar Hossain ◽  
...  
Keyword(s):  
Shelf Life ◽  
Oreochromis Niloticus ◽  
Ph Value ◽  
Control Sample ◽  
Modified Atmosphere Packaging ◽  
Storage Period ◽  
Thiobarbituric Acid ◽  
Life Extension ◽  
Modified Atmosphere ◽  
Acceptable Limit

In order to develop a proper packaging system for sliced tilapia fish (Oreochromis niloticus), the biochemical and microbiological qualities under control (unsealed package), vacuum package and modified atmosphere packaging with 50% CO2/50% N2 (MAP-1)  and 50% CO2/50% O2 (MAP-2)  were evaluated every three days during 18 days of chilled storage (4±1°C). The pH value was not significantly different (p > 0.05) by treatments until day 9, but significantly lower values (p < 0.05) were observed on day 12 of the storage in all treated samples compared to the control. The total volatile base nitrogen (TVB-N) value progressively increased, but not significantly different (p > 0.05) in all treatments during the entire storage period. The thiobarbituric acid reactive substances (TBARS) amounts were significantly lower (p < 0.05) on day 12 in the vacuum and MAP-1 samples compared to the control sample, and were significantly higher (p < 0.05) on day 6, 9, and 12 of the storage period in MAP-2 samples compared to the control, vacuum and MAP-1 samples. The amounts of pH, TVB-N, and TBARS in all samples did not exceed the acceptable limit in almost the entire storage. The total viable count (TVC) progressively increased with storage time. Nevertheless, TVC values were lower (p < 0.05) on day 6, 9, and 12 of the storage periods in all treatments compared to the control. The TVCs exceeded the acceptable limit (7 log CFU/g) on days 6-9 for control, 9-12 for vacuum, day 12 for MAP-2, and 15 for MAP-1 sample during the storage period. Therefore, the MAP has shown promising results for shelf life extension that can be practiced to display the fishery products with prolonged shelf life. 

Combined Chitosan-Thyme Treatments with Modified Atmosphere Packaging on a Ready-to-Cook Poultry Product

2010 ◽  
Vol 73 (4) ◽  
pp. 663-669 ◽  
Author(s):  
V. GIATRAKOU ◽  
A. NTZIMANI ◽  
I. N. SAVVAIDIS
Keyword(s):  
Essential Oil ◽  
Shelf Life ◽  
Modified Atmosphere Packaging ◽  
Storage Period ◽  
Modified Atmosphere ◽  
Sensory Data ◽  
Thyme Essential Oil ◽  
Brochothrix Thermosphacta ◽  
Yeasts And Molds ◽  
Entire Storage Period

In the present study, natural antimicrobials chitosan and thyme, and their combination, were evaluated for their effect on the shelf life of a ready-to-cook (RTC) chicken-pepper kebab (skewer) stored under modified atmosphere packaging (MAP) conditions at 4 ± 0.5°C for 14 days. The following treatments were examined: control samples stored under aerobic packaging (A), samples stored under MAP (M), samples treated with 1.5% chitosan (vol/wt) and stored under MAP (M-CH), samples treated with 0.2% thyme essential oil (vol/wt) (M-T), and samples treated with 1.5% chitosan (vol/wt) and 0.2% thyme essential oil (vol/wt) and stored under MAP (M-CH-T). Treatment M-CH-T significantly affected aerobic plate counts and counts of lactic acid bacteria, Pseudomonas spp., Brochothrix thermosphacta, Enterobacteriaceae, and yeasts and molds during the entire storage period. Similarly, lipid oxidation of the RTC product was retarded (M-CH-T treatment) during storage, whereas redness was maintained in M-T, M-CH, and M-CH-T samples. Based primarily on sensory data (taste attribute), M-CH and M-T treatments extended RTC product shelf life by 6 days, whereas M-CH-T treatment resulted in a product with a shelf life of 14 days that maintained acceptable sensory characteristics (shelf life of the control was 6 days).

scholarly journals Antioxidant and antimicrobial properties of oregano extract (Origani vulgaris herba L.)

2020 ◽  
Vol 8 (1) ◽  
pp. 84-90 ◽  
Author(s):  
Vladislav Oleynikov
Keyword(s):  
Oxidative Stability ◽  
Shelf Life ◽  
Induction Period ◽  
Food Industry ◽  
Food Additives ◽  
Control Sample ◽  
Meat Products ◽  
Antimicrobial Properties ◽  
Sodium Ascorbate ◽  
Rosemary Extract

Introduction. Some ingredients of plant origin possess both antioxidant and bacteriostatic properties. If used in the food industry, they can inhibit microbiological and oxidative damage, thus increasing the shelf life of meat products. Oregano extract is one of such substances, which means that it can be used as an antioxidant and preservative. Therefore, the study of this plant has a significant theoretical and practical potential for the food industry. Study objects and methods. The present research featured ground trimmed beef. The samples with 20% of fat tissue were used to determine the microbiological parameters, while the samples with 30% of fat were used to obtain data on oxidative stability. The control sample contained no additional ingredients. The sample with food additives was pre-treated with acidity regulators and antioxidants, namely sodium acetate E262, ascorbic acid E300, sodium ascorbate E301, sodium citrate E331, and rosemary extract E392. The sample with oregano extract was pre-treated with oregano extract (Origani vulgaris herba L.) in the ratio of 5 g of extract per 1 kg of meat. The extract had been dissolved in 100 g of water. The samples were stored at 4 ± 2°C for 12 days. A CM5 spectrophotometer (Konica Minolta, Japan) was used to determine the color characteristics. The induction period of oxidative stability was determined using an Oxitest oxidative stability analyzer (Velp Scientifica, Italy). The studies were conducted in Austria, Linz. Results and discussion. Oregano extract stabilized the redness rating. For the sample with oregano extract, the induction period of oxidative stability was twice as long as for the control sample and the sample with antioxidants. In addition, oregano inhibited the growth of aerobic and anaerobic microorganisms. Conclusion. The antioxidant and antimicrobial properties of oregano extract prolong the shelf life of ground beef, which makes it possible to reduce the amount of food additives.

scholarly journals Changes in organoleptic, microbiological and biochemical properties of kefir with iodine addition during the storage

10.5219/1679 ◽  
2021 ◽  
Vol 15 ◽  
pp. 732-740
Author(s):  
Diana Dalevska ◽  
Oleg Pokotylo ◽  
Mykola Kukhtyn ◽  
Nataliia Kopchak ◽  
Volodymyr Salata ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Control Sample ◽  
Storage Period ◽  
Test Sample ◽  
Biochemical Properties ◽  
Reproduction Rate ◽  
Experimental Sample ◽  
Organoleptic Characteristics ◽  
Functional Product

Iodine is a vital trace element that must be constantly and daily supplied with food to the organism. Currently, the amount of food that can provide the organism with the required amount of iodine is insufficient. The purpose of the study was to investigate changes in organoleptic, microbiological, and biochemical parameters of kefir made with the addition of iodine during its refrigeration storage. It was found that during the storage of samples of kefir with iodine there is a slowdown in the reproduction of lactic acid bacteria, compared with the control sample. In particular, the number of lactic acid bacteria during the first two days of storage increased 1.3 times in the experimental sample and 1.5 times in the control sample of kefir. After 12 days of storage, the number of lactobacilli in the test sample of kefir increased 2.5 times, and in the control 3.2 times, compared with the amount in fresh kefir. Similar patterns were observed in determining the development of yeast. In particular, the reproduction rate of yeast in the control sample of kefir was, on average, 1.3 times faster (8 – 12 days), compared with yeast in the experimental sample. It was also found that during the 12-day storage period at a temperature of +6 °C, the titrated acidity in kefir with iodine increased 1.4 times, and in the control 1.6 times and was 130.5 °T and 154.1 °T, respectively. At such acidity values, the test sample of kefir still met the requirements of the standard, and the control was 24.1 °T higher. In this case, kefir containing iodide had better organoleptic characteristics during 12 days of storage. Produced kefir with the addition of iodine can be considered a functional product to provide the population with sufficient iodine.

scholarly journals Effect of selected starter cultures on production, properties and shelf life of fresh type cheese

2020 ◽  
Vol 15 (3-4) ◽  
Author(s):  
Irena Barukčić ◽  
Marta Keškić ◽  
Katarina Lisak Jakopović ◽  
Sven Karlović ◽  
Rajka Božanić
Keyword(s):  
Shelf Life ◽  
Milk Fat ◽  
Microbiological Quality ◽  
Storage Period ◽  
Sensory Properties ◽  
Starter Cultures ◽  
Number Of Microorganisms ◽  
Fresh Cheese ◽  
Protective Culture ◽  
Entire Storage Period

The aim of this study was to examine the influence of different starter cultures including protective culture on the production and properties of fresh cheese. Fresh cheeses were produced from pasteurized milk by adding mesophilic starter cultures, mesophilic cultures and liquid rennet and by adding protective culture. All samples were analysed for acidity (active and titratable), microbiological quality, texture, colour and sensory properties during 21 days of cold storage. Additionally, milk fat, the total dry matter, total proteins and mineral content were determined in all cheese samples on the first day of storage. It could be observed that the used mesophilic culture in general did not affect chemical composition of cheese. As expected, during the storage period acidity in all cheeses decreased, while the number of microorganisms increased, whereby that changes were significantly slowed down in cheese produced by adding protective culture. Scores of sensory evaluation were high during the entire storage period for all cheeses, but samples containing and cheese protective cultures achieved the highest score (18.56) at the first as well as at the last day of storage (17.98). According to all analyses, it is evident that the shelf life of cheese produced by adding protective culture has been prolonged for 12 days in comparison to samples produced without protective culture, and accounted 21 days when properly cool stored. In conclusion, the addition of protective culture might be useful for extending the shelf life and maintaining sensory properties as well as colour of fresh cheese.

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