3. FOOD ChEMISTRy & bIOTEChNOLOGy 3.1. Lectures
3. FOOD ChEMISTRy & bIOTEChNOLOGy 3.1. Lectures
3. FOOD ChEMISTRy & bIOTEChNOLOGy 3.1. Lectures
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Chem. Listy, 102, s265–s1311 (2008) Food Chemistry & Biotechnology<br />
and other flavonoids – rutin, morin, quercetin, kaempferol,<br />
myricetin and luteolin were determined. In most of teas high<br />
level of catechin and rutin was detected. Higher vitamine C<br />
level was found in most of fruit teas and in rose hip tea.<br />
High antimutagenic activity exhibited dried cranberries<br />
and blueberries. Most of tested dried fruits with high antimutagenic<br />
effect exhibited also high antioxidant activity as<br />
well as high content of some antioxidants. no direct correlation<br />
was found among these parameters. High antimutagenic<br />
activity showed most of fruit teas, mainly pear tea.<br />
Table I<br />
Total antioxidant activity of dried fruit<br />
Dried fruit TAS [mmol dm –3 ]<br />
apple 12<strong>3.</strong>194 ± 1.280<br />
pear 55.020 ± 0.440<br />
apricot 37.380 ± 0.480<br />
plum 56.640 ± 0.980<br />
cherry 54.998 ± <strong>3.</strong>840<br />
blueberry 92.396 ± <strong>3.</strong>570<br />
cranberry 87.996 ± 4.280<br />
strawberry 59.874 ± 1.350<br />
raisin 82.862 ± 1.280<br />
date 40.456 ± 1.257<br />
fig 28.342 ± 1.100<br />
pineapple 46.198 ± 2.560<br />
mango 1.1568 ± 0.230<br />
papaya 17.9304 ± 0.985<br />
s723<br />
Table II<br />
Total antioxidant activity of cereal bars with dried fruit<br />
Fruit cereal bar TAS [mmol dm –3 ]<br />
plum 8.15 ± 1.28<br />
apple 4.02 ± 0.64<br />
apricot 5.26 ± 0.75<br />
raspberry 4.96 ± 0.52<br />
tropical 2.85 ± 0.48<br />
blueberry 8.76 ± 1.76<br />
pear 6.24 ± 1.02<br />
mixed 6.45 ± 1.14<br />
orange 6.02 ± 0.96<br />
During long-term storage of fruit teas (1 year, 20 °C,<br />
darkness) a significant decrease of all analyzed antioxidant<br />
parameters was followed.<br />
Conclusions<br />
In this work selected kinds of dried fruit, fruit teas and<br />
cereal fruit bars were compared. The hioghest values of active<br />
substances were found in dried berries, apples and apricote.<br />
Similarly, the highest amount of antioxidant substances was<br />
found in cereal bars with berries. Cereal part of bars exhibited<br />
also important contribution to total antioxidat activity. In fruit<br />
teas similar content of active substances was found because<br />
of identical basic composition of most teas (apple, rose hip,<br />
ibis).<br />
It can be concluded that cereal products, dried fruit ant<br />
their mixtures could be important foods recommended for<br />
modern human nutrition
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