What question did this study set out to answer?

To determine the structural degradation pathways of anthocyanins from black carrot, elderberry, and strawberry heated at 95 °C under mildly acidic conditions (pH 3.5) and assess the resulting alterations in color and antioxidant capacity.

November 2, 2007Molecular Nutrition & Food Research

Thermal degradation of anthocyanins and its impact on color andin vitroantioxidant capacity

View Full Paper

Ask AI

Bookmark

Authors

ESEva SadilovaUniversity of Hohenheim RCReinhold CarleUniversity of Stuttgart FSFlorian C. StintzingZentralklinik Bad Berka

Discussion

Member takes

Implication

In vitro study reveals thermal breakdown pathways and declining antioxidant capacity in fruit and vegetable extracts, indicating degradation products cannot restore lost bioactivity.

Key Points

To determine the structural degradation pathways of anthocyanins from black carrot, elderberry, and strawberry heated at 95 °C under mildly acidic conditions (pH 3.5) and assess the resulting alterations in color and antioxidant capacity.
Purified anthocyanin isolates from black carrot, elderberry, and strawberry were heated at 95 °C for 6 hours at pH 3.5.
Degradation pathways and intermediate products were monitored and characterized using HPLC-DAD-MS3.
Color alterations and antioxidant stabilizing capacities were quantified using Trolox equivalent antioxidant capacity (TEAC) assays.
Anthocyanin degradation initiated via pyrylium ring opening to chalcone glycosides in elderberry and strawberry, whereas acylated anthocyanins first cleaved acyl-glycoside moieties, ultimately yielding phenolic acids and phloroglucinaldehyde as terminal products in all extracts.
Black carrot anthocyanins exhibited the highest antioxidant stabilizing capacity due to high acylation levels, whereas strawberry anthocyanins displayed the lowest stability.
Heating caused a continuous decline in TEAC values across all samples, demonstrating that newly generated colorless phenolics could not compensate for the loss of intact anthocyanin antioxidant bioactivity.

Cite This Study

Sadilova et al. (2007) studied this question.

synapsesocial.com/papers/69d704f35413bc3de5ab33b6 https://doi.org/10.1002/mnfr.200700179

View Full Paper

Ask AI

Bookmark

Implication

In vitro study reveals thermal breakdown pathways and declining antioxidant capacity in fruit and vegetable extracts, indicating degradation products cannot restore lost bioactivity.

Thermal degradation of anthocyanins and its impact on color andin vitroantioxidant capacity

Discussion

Member takes

Implication

Key Points

Cite This Study

Thermal degradation of anthocyanins and its impact on color andin vitroantioxidant capacity

Discussion

Member takes

Implication

Key Points

Cite This Study

Also Consider

Also Consider