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Synthetic antioxidants such as butylated hydroxyl toluene (BHT) added to meat products have been actually restricted because of their toxic activity. This fact encourages the application of natural antioxidants as a protection from lipid oxidation process. Hence, the effect of addition of Solanum lycopresicum L. extract to pork and beef meatballs during frozen storage (-18°C/90 days) was investigated on physicochemical parameters, antioxidant activity and flavour. In the study, three kinds of meatballs were analysed: control (C) without antioxidant; with added BHT (0.01%) and with Solanum lycopresicum L. extract (1%, ET). Addition of 1% of Solanum lycopresicum L. extract to beef and pork meatballs ET resulted in a significant (P<0.05) decrease in lipid oxidation and increased redness stability. In conclusion, the addition of Solanum lycopresicum L. extract (1%) as a natural plant antioxidant to steamed beef and pork meatballs during frozen storage can result in reduced lipid oxidation level, stabilized red colour and intensity of meaty flavour. [ABSTRACT FROM AUTHOR]

The scope of the research was analysis of geese fillets at low-temperature heat treatment including three temperatures (60°C; 70°C; 80°C) and two cooking moments (6h, 24h) in terms of the profile of volatile compounds depending on the degree of protein denaturation. Lipid oxidation, L * a * b * color, shear force, cooking yield and pH were also analyzed. The analysis of the obtained results allowed to determine the characteristic temperature parameters, which can improve a physicochemical processes. It was noticed that, while the cooking yield, L*, a* and shear force decreased with the prolonged cooking time and increased temperature, the b* and TBARS showed increased values. Furthermore, longer cooking times caused a greater amount of volatile compounds presence and the 2-3-dimethylpyrazine was indicated as a marker of baked flavor of sous-vide treated geese fillets. [ABSTRACT FROM AUTHOR]

Abstract: The aim of the study was to determine the effect of the addition of 0, 1, 3, and 6% of Spirulina powder (SP) on physicochemical properties and consumer acceptability of shortbread biscuits during storage. Color, hardness, water content, water activity, total antioxidant activity (TAA), total phenolic content, lipid oxidation, fatty acids profile, and sensory evaluation of biscuits were determined on 0, 30, 60, and 90 days of storage. Results showed that biscuits baked with the addition of SP were significantly harder and darker than the control during the whole period of storage. Despite this, they were still acceptable by consumers. It was observed that in each day of storage biscuits with SP had more phenolic compounds and higher values of TAA than the control, and their contents increased with the level of SP addition. Moreover, the addition of SP reduced oxidative changes of shortbread biscuits during storage. Practical Applications: Intense competition in the market of biscuit manufacturers forces to implement product innovations in order to attract new groups of consumers. Shortbread biscuits with Spirulina powder could be characterized not only by nutritional properties and quite good sensorial acceptability but also by extended shelf life. Additionally, so far products identical with the proposed have not been observed, which creates great opportunities for their commercialization. [ABSTRACT FROM AUTHOR]

Abstract: The aim of this study was to determinate the influence of chemical coating treatments for quality maintenance of whole button mushrooms (Agaricus bisporus) during storage at 2 °C. Six different treatments [distilled water (C), E1: 0.3% CaCl2, E2: 2% CaCl2, E3: 0.1% chitosan in 1% citric acid, E4: 0.5% chitosan in 1% citric acid, E5: 0.1% chitosan in 0.5% acetic acid] were used. Physicochemical properties such as color, weight loss, texture, total antioxidant activity, and total phenolic content were monitored during 14 days. The results showed that the mushrooms treated with CaCl2 and chitosan solution in citric acid could be storage up to 14 days at 2 °C without significant deterioration in their quality. In contrast, coating with chitosan solution in acetic acid allows the mushroom to be stored for up to 4 days. Coatings do not protect mushrooms against excessive loss of phenolic compounds and their ability to reduce free radicals. Practical applications: Physiological processes associated with maturation of mushrooms do not end after harvest. Shelf life of mushrooms is 3–4 days at room temperature (20–25 °C). In recent years, the method to extend the durability and quality of these products has become edible coatings. According to the presented results, it is possible to maintain the good quality of product up to 14 days for mushrooms washed with CaCl2 solutions. [ABSTRACT FROM AUTHOR]

The objective of the experiment was to study the influence of the intensity of light at the pork loins surface on their physicochemical and microbiological properties as a function of cold storage. Meat slices were packed in modified atmosphere packs (MAP: 80% O2and 20% CO2) and stored in the darkness or displayed under fluorescent light (1000 lx and 2000 lx, respectively) for 12 days. Results indicated that on the last day of storage pork loins stored under light were more discolored, had greater drip loss, and were less tender (P < 0.05). Moreover, excessive light intensity (LI) accelerated microorganism growth and led to an increase of n-6/n-3 ratio (P < 0.05). Finally, MAP packages stored under 2000 lx were characterized by the lowest oxygen and the highest carbon dioxide content. Considering the above, it is recommended to store pork loins in the dark and if it is not possible in the low LI. [ABSTRACT FROM AUTHOR]

A comparison was made of the effect of different gas headspace to meat ratio on quality of pork loin (m. longissimus thoracis et lumborum) obtained from crossbred pigs (Polish Landrance x Duroc, n = 6) as a function of cold storage. Samples were stored in modified atmosphere packs (80% O₂:20% CO₂) with gas headspace to meat ratios (G/M) of 3:1, 1:1 and 1:3. Physicochemical and microbiological parameters were monitored for up to 12 days. The results indicated that the best properties of meat were obtained when stored pork loins with the gas headspace to meat ratio of 1:1. G/M = 1:3 contributed to the increase in the growth of microorganisms and G/M = 3:1 and led to unfavorable changes in meat color. Finally, chemical properties of pork loins were unaffected (P > 0.05) by varying the gas headspace to meat ratio. [ABSTRACT FROM AUTHOR]

The aim of this study was to determine the influence of different packaging materials on meat quality during cold storage. Therefore pork loins (m. longissimus thoracis et lumborum) obtained from crossbred pigs (Polish Landrance x Duroc, n = 6) were stored at 2 ℃ in modified atmosphere packs (80% O2, 20% CO2) in four types of trays, which differ in gas permeability. Physicochemical (headspace gas composition, pH, colour, drip loss, cooking loss, shear force, the basic composition and fatty acid profile) and microbiological (Salmonella spp., Escherichia coli, Enterobacteriaceae, total aerobic plates count, total psychrotrophic bacteria count, the number of lactic acid bacteria, Pseudomonas spp., the general amount of yeast and mold) parameters were monitored for up to 12 days. At the end of the storage period no differences in most physicochemical properties of pork loin due to type of packaging were found, however trays with high gas permeability had the greatest impact on total aerobic plates count and Pseudomonas spp. growth. [ABSTRACT FROM AUTHOR]

This study was performed to determine the effects of vacuum packaging (VP) and modified-atmosphere packaging (MAP) (CO2/N2 = 3:7) on the physicochemical properties and sensory attributes in chicken breast meat during storage at 2ºC±0.5ºC for 5, 10 and 15 days. Results showed that storage time influenced the physicochemical properties, except sensory attributes, shear force and shear energy of chicken meat. The extended storage time was causing an increase in the pH value, drip loss and in values of color parameters (L, a* b*) in chicken meat. Moreover, the packaging method affected values of drip loss, cooking loss and shear force. Fresh meat (0 days of storage) was characterized by the highest overall quality assessed with the semi-consumer scaling method. Storage time and packaging method were found to exert significant effects on the physicochemical parameters determined instrumentally and on sensory attributes of meat evaluated with the semi-consumer scaling method. [ABSTRACT FROM PUBLISHER]

Marinating is one of the most common methods of pre-processing meat. Appropriate selection of marinade ingredients can influence the physicochemical properties of the meat and can reduce the level of polycyclic aromatic hydrocarbons (PAHs) in the final product. The effects of the inclusion of natural plant extracts such as bay leaf (BL), black pepper (BP), turmeric (TU), jalapeno pepper (JP) and tamarind paste (TA) in marinades on the physicochemical properties of grilled pork neck were studied. The addition of spice extracts to marinades increased the proportion of colour components L* and b*. The use of TU, TA, JP, MX and C marinades lowered the hardness and pH of the meat. The highest phenolic compound levels were observed in the case of the mixture of all extracts (MX) and JP marinades, and the highest total antioxidant capacity was exhibited by the BL and MX marinades. The highest PAH content was recorded in the CON marinade (Σ12PAH 98.48 ± 0.81 µg/kg) and the lowest in the JP marinade (4.76 ± 0.08 µg/kg), which had the strongest, statistically significant reducing effect (95% reduction) on PAH levels. Analysis of correlation coefficients showed a relationship between the total antioxidant capacity of the marinades and the PAH content in grilled pork. [ABSTRACT FROM AUTHOR]

The aim of this study was to determine the influence of different packaging materials on meat quality during cold storage. Therefore pork loins (m. longissimus thoracis et lumborum) obtained from crossbred pigs (Polish Landrance x Duroc, n = 6) were stored at 2 ℃ in modified atmosphere packs (80% O 2 , 20% CO 2 ) in four types of trays, which differ in gas permeability. Physicochemical (headspace gas composition, pH, colour, drip loss, cooking loss, shear force, the basic composition and fatty acid profile) and microbiological ( Salmonella spp., Escherichia coli, Enterobacteriaceae, total aerobic plates count, total psychrotrophic bacteria count, the number of lactic acid bacteria, Pseudomonas spp., the general amount of yeast and mold) parameters were monitored for up to 12 days. At the end of the storage period no differences in most physicochemical properties of pork loin due to type of packaging were found, however trays with high gas permeability had the greatest impact on total aerobic plates count and Pseudomonas spp. growth.