ISSN:
1750-3841
Quelle:
Blackwell Publishing Journal Backfiles 1879-2005
Thema:
Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
,
Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
Notizen:
Anthocyanin extracts derived from blueberries and red cabbages using two extraction methods, a S02 extraction procedure and a methanol extraction/ion exchange purification procedure, were compared as colorants in powdered soft drink mixes. Total anthocyanins, total flavonols and ascorbic acid retention did not change significantly during 6 wk of storage of the dry mixes at 21°C and 35°C. However, loss of anthocyanins was observed in the reconstituted beverages containing purified methanol extracts during 9 days of storage at 4°C. Degradation of ascorbic acid in the reconstituted beverages containing ion exchange-purified extracts and the commercial control, proceeded at a rapid rate reaching 95% reduction after 9 days storage at 4°C. SO2 -extracted powders exerted a protective effect on ascorbic acid retention during the same period of reconstituted storage. Sensory color evaluation of the products indicated that beverages containing methanol-derived blueberry extracts were preferred to commercial cherry controls.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1111/j.1365-2621.1978.tb02323.x
