Antioxidant capacity and contents of phenols, ascorbic acid, β-carotene and lycopene in lettuce
| Autor: | Zdravković Jasmina M., Aćamović-Đoković Gordana S., Mladenović Jelena D., Pavlović Radoš M., Zdravković Milan S. |
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| Jazyk: | English<br />Serbian |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Hemijska Industrija, Vol 68, Iss 2, Pp 193-198 (2014) |
| Druh dokumentu: | article |
| ISSN: | 0367-598X 2217-7426 |
| DOI: | 10.2298/HEMIND130222043Z |
| Popis: | The antioxidant activity of three lettuce varieties (Lactuca sativa L.) Emerald, Vera and Neva, cultivated in two kinds of protected spaces, a glasshouse and a plastic greenhouse, under controlled conditions, was determined. The content of antioxidant compounds: total phenols, flavonoids, L-ascorbic acid, ß-carotene and lycopene, were determined in ethanolic extracts of the lettuce with spectrophotometric methods. The largest content of total phenols (78.98 ± 0.67 mg GAE/g of dry extract) was found in ethanolic extract of the lettuce variety Neva cultivated in a plastic greenhouse, whereas the largest content of flavonoids (35.45 ± 0.95 mg RU/g of dry extract) was displayed in the lettuce Emerald cultivated in a glasshouse. It was observed that the lettuce cultivated in the glasshouse contained a somewhat higher content of L-ascorbic acid than the lettuce same variety from plastic greenhouse. The content of lycopene in the examined lettuce is negligible, and the content of ß-carotene is low. On the other hand, the high content of phenolic components causes favourable antioxidant properties found in all varieties of examined lettuce. [Projekat Ministarstva nauke Republike Srbije, br. TR 31059: A new concept in breeding vegetable cultivars and hybrids designed for sustainable growing systems using biotechnological methods] |
| Databáze: | Directory of Open Access Journals |
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