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MAP Samples (map + sample)
Selected AbstractsOriginal article: Effect of modified atmosphere packaging using different CO2 and N2 combinations on physical, chemical, microbiological and sensory changes of fresh sea bass (Dicentrarchus labrax) filletsINTERNATIONAL JOURNAL OF FOOD SCIENCE & TECHNOLOGY, Issue 9 2010Laura Provincial Summary The effect of different modified atmosphere packaging (MAPs) on physical, chemical, microbiological and sensory changes of sea bass fillets when stored at 4 °C and standard light conditions was investigated for up to 21 days and compared to a control batch stored in overwrap. Sea bass fillets were packed using different CO2 and N2 combinations (40% CO2,60% N2; 50% CO2,50% N2; 60% CO2,40% N2), and quality assessment was based on instrumental, chemical, microbiological and sensory analysis. The results showed that MAP extended shelf-life of sea bass fillets from 7 days (overwrap packaging) to 14 days. Drip loss, pH values and thiobarbituric acid reactive substances (TBARS) measurements were higher in overwrap samples but no differences (P , 0.05) were found between MAP samples. Bacteria grew most quickly and showed higher counts in overwrap samples followed by 40% CO2,60% N2; 50% CO2,50% N2 and finally 60% CO2,40% N2. Sensory analyses were in good relation with chemical and microbiological results establishing best scores and an extended shelf-life for MAP samples especially in MAPs with high CO2 levels. [source] EFFECT OF PACKAGING AND STORAGE TIME ON BEEF QUALITATIVE AND MICROBIAL TRAITSJOURNAL OF FOOD QUALITY, Issue 2010MARIA D'AGATA ABSTRACT The effect of polyvinyl chloride packaging (PP), vacuum packaging (VP) and modified atmosphere packaging (MAP) (60% O2, 30% CO2, 10% N2) on some quality parameters and microbiological profile of beef was studied. Longissimus dorsi samples were examined at 7-day intervals during storage at 4C ± 2C, until 21 days. pH of PP beef increased during storage, whereas in VP and MAP beef remained stable. Superficial color darkened for PP samples, remaining stable until 7 and 21 days for VP and MAP samples, respectively; internal color was not significantly influenced by either storage time and packaging methods. Water-holding capacity was not affected by packaging methods, increasing from 7 to 21 days. VP showed lower lipid oxidation than MAP until 21 days and than PP until 14 days. Total mesophilic counts reached the threshold of 107 ufc/g after 7 days in PP and after 14 and 21 days in MAP and VP, respectively. PRACTICAL APPLICATIONS The results of this study confirmed that meat packaged in polyvinyl chloride packaging (PP) must be stored for few days to not fall into pH, color and microbiological alterations; meat packaged in modified atmosphere packaging (MAP), even though maintained appreciable superficial colorimetric characteristics, showed a high microbiological growth from 14 days of storage; meat vacuum packaged (VP), although the worst colorimetric appearance, showed the best keeping properties in terms of microbiological profile and lipid oxidation lower than MAP until 21 days of storage. Nevertheless, the fact that the internal color of meat is similar among different packaging systems, independently from time of storage, may suggest that VP system may be useful for prolonged storage of big pieces of meat. [source] Microbiological and Sensorial Quality Assessment of Ready-to-Cook Seafood Products Packaged under Modified AtmosphereJOURNAL OF FOOD SCIENCE, Issue 9 2009B. Speranza ABSTRACT:, The effects of modified atmosphere packaging (MAP) (30:40:30 O2:CO2:N2 and 5:95 O2:CO2) on the quality of 4 ready-to-cook seafood products were studied. In particular, the investigation was carried out on hake fillets, yellow gurnard fillets, chub mackerel fillets, and entire eviscerated cuttlefish. Quality assessment was based on microbiological and sensorial indices determination. Both packaging gas mixtures contributed to a considerable slowing down of the microbial and sensorial quality loss of the investigated seafood products. Results showed that sensorial quality was the subindex that limited their shelf life. In fact, based primarily on microbiological results, samples under MAP remained acceptable up to the end of storage (that is, 14 d), regardless of fish specie. On the other hand, results from sensory analyses showed that chub mackerel fillets in MAP were acceptable up to the 6th storage d, whilst hake fillets, yellow gurnard fillets, and entire cuttlefish became unacceptable after 10 to 11 d. However, compared to control samples, an increase in the sensorial shelf life of MAP samples (ranging from about 95% to 250%) was always recorded. Practical Application: Modified atmosphere packaging (MAP) is an inexpensive and uncomplicated method of extending shelf life of packed seafood. It could gain great attention from the fish industrial sector due to the fact that MAP is a practical and economic technique, realizable by small technical expedients. Moreover, there is great attention from the food industry and retailers to react to the growing demand for convenience food, thus promoting an increase in the assortments of ready-to-cook seafood products. [source] The combined effect of superchilling and modified atmosphere packaging using CO2 emitter on quality during chilled storage of pre-rigor salmon fillets (Salmo salar)JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE, Issue 10 2009Anlaug Ådland Hansen Abstract BACKGROUND: Pre-rigor fillets of Atlantic salmon were either superchilled or chilled prior to packaging in air or in modified atmosphere (MAP, 60% CO2/40% N2) with a CO2 emitter, in 5.3 L high-density polyethylene trays with three to four layers of fillets (3.0,3.7 kg). All samples were stored at 0.1 °C for 28 days. RESULTS: Fillets stored in MAP had significantly lower bacterial growth compared to fillets stored in air, and MAP superchilled bottom fillets had lower bacterial counts compared to the corresponding chilled fillets. Samples superchilled prior to refrigerated storage in air had similar bacterial growth to ordinary chilled samples. Faster fillet softening during storage and higher liquid loss were observed in superchilled MAP samples. CONCLUSION: Combining short-term superchilling and MAP with a CO2 emitter prolonged the shelf-life of pre-rigor salmon fillets, which can improve sustainability throughout the value chain. The superchilling method needs to be optimized to avoid negative effects on texture and liquid loss. Copyright © 2009 Society of Chemical Industry [source] | ||||||||||