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Research Of Modified Atmosphere Packaging And Related Technology On Fresh-Berries

Posted on:2009-11-19Degree:MasterType:Thesis
Country:ChinaCandidate:Q Q YuFull Text:PDF
GTID:2121360245480351Subject:Food Science
Abstract/Summary:PDF Full Text Request
Fresh-berries are one of the most famous fruits in China. Unfortunately, seasonal, region and its perishable factors are serious limited its development, which result contradiction between consumers and markets, especially for perishable fruits and vegetables. It is urgent to carry out study on the storage of fresh-berries in our country. However, MAP technique becomes the hot point in the last few years, because of its simple, valid and safety. This paper took three kinds of fresh-berries as the test objects, and studied their principles of quality variety systemically in the normal temperature. Meanwhile, we chose three kinds of package materials and made the comparison test to get the fittest package material for fresh-berries. In addition, based on the trend of compound research in current package technology, this paper also made extended study about MAP related technology for fresh-berries.After analyzing the test data of the three kinds of fresh-berries, we found that the respiration and weight loss could be controlled, the sensory quality also could be sustained, as well as the decreasing content of acid by MAP. The experiment showed that the shelf-life of fresh-berries can be extended by MAP. Obviously, while in the comparison test of the package materials, we chose LDPE, PVC and compound film between LDPE and PVC as the test objects. The quality of fresh-berries was detected, we found that the package using compound film between LDPE and PVC, had the lowest Index Brown-variety, and the highest survival rates, that is, the compound film is more suitable for the package of fresh-berries.In the research of related technology of MAP, we took strawberry, cherry and waxberry as the test object, and adopted hot steam processing, film processing and calcium processing technique. We concluded 3 items through the experiment: (1) Aimed at the single re-processing technique, the film processing was better than hot steam processing. (2)The disposal of film combined with calcium can improve the fresh effect of single film processing. (3) The effect of fresh-berries' extended shelf-life, using various pre-processing technology, is better than that of adopting single pre-processing.With the development of economy, the sale method of merchandise had changed, and the consumers also had the higher demand to product packs. Through experiment of MAP, we found MAP had its special advantage better than other package technology of fresh-berries. But currently, MAP isn't applied to the package of fresh-berries. So, we made two kinds of market design for the fresh-berries MAP, such as: The design of fresh-berries MAP with paper tray, and the candy design in order to offer effective reference for the market package of fresh-berries.
Keywords/Search Tags:Modified Atmosphere Packaging, fresh-berries, shelf-life, related technology, packaging design
PDF Full Text Request
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