Abstract
The effect of chronic exposure to ozone pollution on nutritional traits of bean (Phaseolus vulgaris L.
cv. Borlotto Nano Lingua di Fuoco) seeds from plants grown in filtered and nonfiltered open-top
chambers (OTCs) has been investigated. Results showed that, among seed macronutrients, ozone
significantly raised total lipids, crude proteins, and dietary fiber and slightly decreased total free amino
acid content, although with a significant reduction of asparagine, lysine, valine, methionine, and glycine,
compensated by a conspicuous augmentation of ornithine and tryptophan. Phytosterol analysis showed
a marked increase of -sitosterol, stigmasterol, and campesterol in seeds collected from nonfiltered
OTCs. With regard to secondary metabolites, ozone exposure induced a slight increase of total
polyphenol content, although causing a significant reduction of some flavonols (aglycone kaempferol
and its 3-glucoside derivative) and hydroxycinnamates (caffeic, p-coumaric, and sinapic acids). Total
anthocyanins decreased significantly, too. Nevertheless, ozone-exposed seeds showed higher
antioxidant activity, with higher Trolox equivalent antioxidant capacity (TEAC) values than those
measured in seeds collected from filtered air.
Lingua originale | English |
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pagine (da-a) | 201-208 |
Numero di pagine | 8 |
Rivista | Journal of Agricultural and Food Chemistry |
Volume | 57 |
DOI | |
Stato di pubblicazione | Pubblicato - 2009 |
Keywords
- antioxidant activity
- bean seeds
- free amino acids
- ozone pollution
- polyphenols
- sterols