Pavlovska, Gorica and Dukovska, Emilija and Antoska-Knights, Vesna and Jankuloska, Vezirka (2014) INFLUENCE OF TEMPERATURE AND TIME OF STORAGE ON AMOUNT OF VITAMIN C IN STRAWBERRIES. Journal of Hygienic Engineering and Design.
Full text not available from this repository.Abstract
Nutritional quality of strawberries comes mostly due to the large amount of containing vitamin C. There is a need of proper strawberry storage to preserve the high amount of vitamin C. Vitamin C was determined by the Tillmans method in strawberries stored at: room temperature, temperature of 4 0C (cooling) and at temperature of -18 0C (freezing). The storage was up to 11 days. Results were processed with t- test and after statistical processing we calculated the Pearson’s correlation coefficient. In all three storage conditions there is a reduction of vitamin C amount. The amount of vitamin C in fresh strawberries is 60.85 mg/100 g and after 5 days it is only 7.57 mg/100 g for the strawberries stored at room temperature, 43.30 mg/100 g for the strawberries stored under cooling conditions and 44.54 mg/100 g for the frozen strawberries. After 11 days, there is almost no vitamin C (0.55 mg/100 g) in the strawberries stored at room temperature, the amount of vitamin C in the frozen strawberries was 28.21 mg/100 g, and in the cooling strawberries there was the highest amount of vitamin C that achieved 37.92 mg/100 g. For strawberries stored at room temperature and for freezing strawberries there is the highest value for Pearson’s correlation coefficient and r = 0.93871402. This coefficient it is lower for cooled strawberries and freezing strawberries, r = 0.887226935. Vitamin C reduces differently in strawberries stored in different conditions. Until the fifth day, the tendency of vitamin C reduction is the smallest for the frozen strawberries, and after the fifth day it is the smallest for the cooling strawberries. Key words: Strawberries, Vitamin C, Storage, Cooling, Freezing.
| Item Type: | Article |
|---|---|
| Subjects: | Scientific Fields (Frascati) > Natural sciences > Mathematics |
| Divisions: | Faculty of Technology and Technical Sciences |
| Depositing User: | Mr Jordan Martinovski |
| Date Deposited: | 23 Nov 2019 13:04 |
| Last Modified: | 23 Nov 2019 13:04 |
| URI: | http://eprints.uklo.edu.mk/id/eprint/2068 |
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