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vol. 9, nr. 1 (2007)
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The effect of freezing conditions of strawberry storage on the level of thawing drip loss
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Tomasz Pukszta, Piotr Palich
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Department of Hotel and Tourism Management, Gdynia Maritime University, ul. Morska 83, 81-225 Gdynia
e-mail: phazi@am.gdynia.pl |
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vol. 9 (2007), nr. 1,
pp. 203-208
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abstract:
The study was undertaken to check the effect of freezing conditions of storing strawberries on the level of the thawing drip loss. Research material was divided into three parts, each of them stored in other conditions of freezing, at constant temperature of -25°C and -18°C, and at temperature varying from -25°C to -18°C, applying a 48-hour series of change. The amount of the thawing drip loss was determined prior to cold storage and in 4-week series, through twenty-four weeks of storage. The said determinations consisted in the measurement of the amount of drip loss by placing frozen strawberries on a funnel, at room temperature. The measurements were made after three hours. An increase was observed in steady level of the thawing drip loss depending on the time of cold storage. The biggest dynamics of increase in the thawing drip loss was observed in the case of strawberries that were stored in conditions of varying temperature, whereas the smallest dynamics was achieved at the constant temperature of -25°C. The research showed that the level of drip loss from thawing strawberries is influenced both by the rate of freezing and the time of cold storage, and by the stability of the storage temperature as well.
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keywords:
frozen fruit, fluctuation of storage temperature, thawing drip loss
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original in:
English
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