Abstract：
:The impact of peeling and three cooking treatments (boiling, baking and microwaving) on the content of selected phytochemicals in white-, yellow-, red- and purple-fleshed potatoes was investigated. Ascorbic acid and chlorogenic acid contents were determined by HPLC-DAD, total anthocyanin content by pH-differential spectrophotometry, glycoalkaloid, α-chaconine and α-solanine contents by HPLC-ESI/MS/MS. All cooking treatments reduced ascorbic and chlorogenic acid contents, total glycoalkaloids, α-chaconine and α-solanine with the exception of total anthocyanins. The losses of ascorbic and chlorogenic acids were minimised with boiling and total anthocyanin levels retained the highest. Boiling of peeled tubers decreased contents of total glycoalkaloids (α-chaconine and α-solanine) and appeared as the most favourable among the three tested methods. Moreover, due to higher initial levels, red- and purple-fleshed cultivars retained higher amounts of antioxidants (ascorbic acid, chlorogenic acid and total anthocyanin) after boiling and may be healthier as compared with white or yellow cultivars.
journal_name
Food Chemjournal_title
Food chemistryauthors
Lachman J,Hamouz K,Musilová J,Hejtmánková K,Kotíková Z,Pazderů K,Domkářová J,Pivec V,Cimr Jdoi
10.1016/j.foodchem.2012.11.114subject
Has Abstractpub_date
2013-06-01 00:00:00pages
1189-97issue
2-3eissn
0308-8146issn
1873-7072pii
S0308-8146(12)01858-4journal_volume
138pub_type
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