Related Experiment Video
Updated: Feb 2, 2026

Evaluating the Effects of Different Polishing Methods on Color Stability of Dental Restorations in Pediatric Dentistry
Published on: June 6, 2025
Evaluation of the composition of Chinese bayberry wine and its effects on the color changes during storage
Zhengwei Zhang1, Jieying Li1, Liuping Fan1
1National Engineering Research Center for Functional Food, School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu 214122, China.
Abstract:
The color changes of Chinese bayberry wines during storage is a wide and urgent problem and its mechanism is still not clear. The changes of composition and color parameters of Chinese bayberry wines were studied during 70 days of storage in the dark at three different temperatures (4, 25 and 37 °C). The L∗, a∗, b∗, anthocyanins, total phenols, and total flavonoids decreased along with the increase of polymeric pigments at all temperatures while 5-Hydroxymethylfurfural and browning index increased only at 37 °C. The degradation of anthocyanins followed a first-order kinetic model. No furfurals and ascorbic acid were detected at all temperatures during storage. Wines stored at higher temperature showed higher polymeric pigments. The result probably indicated phenols especially anthocyanins and polymeric pigments seem to be main factors than Maillard reaction in the color changes of Chinese bayberry wines during storage.
Related Concept Videos
Storage
Colors and Magnetism
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
Color Vision
Classifying Matter by Composition
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
A mixture is composed of two or...
ATP Energy Storage and Release
One example of energy coupling using ATP involves a...
Sugars as Energy Storage Molecules

