Abstract
ntroduction. In the present day, carrots are among of the most important
root vegetables in the world. Carrots are not only universal root vegetables, but
a valuable source of antioxidants in the human diet. The purpose of this study
was to determine the differences in the content of vitamin E (α-tocopherol) and
total content of polyphenol derivatives in carrots of six different breeds (‘Bolero’,
‘Cidera’, ‘Maestro’, ‘Nantes’, ‘Narbonne’, ‘Stanford’) that had been stored under
three different conditions – under the cover of sand in a cellar (+10–+11°C, 82%
humidity), in a refrigerator (+3°C) and a freezer (-18°C).
Methods. The research was performed in the Scientific Laboratory of Biochemistry of Riga Stradiņš University. In order to determine the content of polyphenol derivatives in samples of carrot juice, the standardized Folin-Ciocalteu method was used [1]. For determining the content of vitamin E (α-tocopherol) a chromatographic analysis was performed using a Waters 2695 Alliance HPLC system [2].
Results and conclusions. The highest concentration of polyphenol derivatives
after three months of storage was found in the sample of ‘Cidera’ breed of carrots, stored in the cellar under the cover of sand. Comparing the samples stored in the refrigerator and the freezer, the highest concentration of polyphenol derivatives was found in the refrigerator-stored samples. After five months of storage, the highest concentration of polyphenol derivatives was found in the sample of ‘Narbonne’ breed of carrots stored in the cellar under the cover of sand. In case of five months of storage, a higher concentration of polyphenol derivatives was found in the samples stored in the freezer as opposed to the refrigerator. Comparing the effects of storage conditions on the concentration of vitamin E (α-tocopherol), it was found that regardless of the length of time, the highest concentrations were found in the samples stored in the cellar, followed by the samples stored in the freezer, with the lowest concentration found in the samples stored in the refrigerator.
root vegetables in the world. Carrots are not only universal root vegetables, but
a valuable source of antioxidants in the human diet. The purpose of this study
was to determine the differences in the content of vitamin E (α-tocopherol) and
total content of polyphenol derivatives in carrots of six different breeds (‘Bolero’,
‘Cidera’, ‘Maestro’, ‘Nantes’, ‘Narbonne’, ‘Stanford’) that had been stored under
three different conditions – under the cover of sand in a cellar (+10–+11°C, 82%
humidity), in a refrigerator (+3°C) and a freezer (-18°C).
Methods. The research was performed in the Scientific Laboratory of Biochemistry of Riga Stradiņš University. In order to determine the content of polyphenol derivatives in samples of carrot juice, the standardized Folin-Ciocalteu method was used [1]. For determining the content of vitamin E (α-tocopherol) a chromatographic analysis was performed using a Waters 2695 Alliance HPLC system [2].
Results and conclusions. The highest concentration of polyphenol derivatives
after three months of storage was found in the sample of ‘Cidera’ breed of carrots, stored in the cellar under the cover of sand. Comparing the samples stored in the refrigerator and the freezer, the highest concentration of polyphenol derivatives was found in the refrigerator-stored samples. After five months of storage, the highest concentration of polyphenol derivatives was found in the sample of ‘Narbonne’ breed of carrots stored in the cellar under the cover of sand. In case of five months of storage, a higher concentration of polyphenol derivatives was found in the samples stored in the freezer as opposed to the refrigerator. Comparing the effects of storage conditions on the concentration of vitamin E (α-tocopherol), it was found that regardless of the length of time, the highest concentrations were found in the samples stored in the cellar, followed by the samples stored in the freezer, with the lowest concentration found in the samples stored in the refrigerator.
| Original language | English |
|---|---|
| Pages | 83-83 |
| Publication status | Published - 2020 |
| Event | 3rd International Conference "Nutrition and Health 2020" - Riga, Latvia Duration: 9 Dec 2020 → 11 Dec 2020 Conference number: 3 https://www.nutritionandhealth2020.lu.lv/lv/ |
Conference
| Conference | 3rd International Conference "Nutrition and Health 2020" |
|---|---|
| Country/Territory | Latvia |
| City | Riga |
| Period | 9/12/20 → 11/12/20 |
| Internet address |
Field of Science*
- 3.1 Basic medicine
- 3.3 Health sciences
Publication Type*
- 3.4. Other publications in conference proceedings (including local)