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Cuba imports flexible materials for packaging products, their prior evaluation being essential. Dairy companies in Cuba are interested to quarry of suppliers of packaging materials, but the decision to purchase materials must be subjected to prior technical evaluations. The objective of this work was to evaluate the characteristics of the bags used in the packaging of milk flour, and to analyze the physical, chemical, microbiological and sensory characteristics of the product during storage. A total of 60 samples were randomly taken; the bags were subjected to identification of the material, thickness and resistance to sealing, while to the product: physical, chemical, microbiological and sensory analysis. In the identification it was verified that the bag is made up of more than one layer, the closure of the container was efficient, and the material allowed to maintain the physical, chemical, microbiological and sensory characteristics of the product because after six months they met the quality requirements established. [ABSTRACT FROM AUTHOR]

In this study the behavior of dry bee pollen during storage was evaluated, two storage temperatures 5 and 29 °C and two packaging materials were considered: amber polyethylene terephthalate (PET) bottles and double zipper polyethylene (PE) bags. The dry pollen was carried out physical-chemical measurements (humidity, acidity, pH and proteins) and microbiological (microorganisms at 30 °C, filamentous fungi and yeasts) every seven days to 70 days of storage. It was observed that the pH, acidity and protein values did not vary significantly (p > 0,05) during the period for any of the storage alternatives studied, while the humidity for the samples stored in the bags at room temperature showed an appreciable increase with respect to the initial value, from 5,17 to 7,33 %. In the case of microbiological indicators, no increase was observed during the period. [ABSTRACT FROM AUTHOR]

The conservation for 10 months of a dehydrated orange juice stored at 27 °C was studied in two types of packaging materials: high-density polyethylene (HDPE) and polypropylene/polyethylene (PP/PE). The response variables were humidity, ascorbic acid retention and sensory evaluation. The sensory results, which was the indicator that caused the rejection of the product, were processed by regression analysis and considering the regression variance with a maximum probability of rejected samples of 5%. The shelf-life of the seven-month for dehydrated orange juice in HDPE container is guaranteed, while the product packed in PP/PE maintained its sensory properties even after 10 months at room temperature. [ABSTRACT FROM AUTHOR]

The objective of the present work was to determine the shelf-life of soda cookies packed in bags of complex material of 0.5 kg. The cookies were evaluated initially to check the execution of their specifications of quality regarding humidity content and sensorial evaluation. The sensorial evaluation was carried out with 6 trained panelists, who made an initial description of the product and they evaluated it quantitatively by means of the Analytic Procedure of Sensorial Evaluation of cookies until the failure. The packaging material was identified and it was determined the thickness and the water vapor permeability. Thermal seal resistance was also determined to different closings of the bag. The shelf-life of soda cookies packed in bags of complex material of 0.5 kg was 90 days. [ABSTRACT FROM AUTHOR]

The objective of this work was to evaluate different flexible materials and its close. It didn't meet significant difference as for the vapour water permeability of the folding box of 2 kg of cookies with interior polypropylene's bag closed with loop and the variant with interior polypropylene's bag, tied with cotton thread. The variant of folding box with interior highdensity polyethylene's bag closed white plastic seal and external cover of polyvinyl chloride retractile film presented a water vapour permeability 2, 85 times major that the other ones. The cookie packed in box of folding cardboard with interior bag of polypropylene, closed in its superior part by means of loop presented a bigger conservation of its quality and sensorial preference for the appraisers. [ABSTRACT FROM AUTHOR]