This article contains findings obtained from research on animals:
- The results from animal research studies should not be directly applied to humans and the results may not generalise to the human population.
- There may be significant differences between species in terms of physiology, physiology, and pharmacology, as well as differences in the way diseases and treatments are modelled in animals.
- Any conclusions drawn from animal research should be considered with caution and in the context of other types of research studies such as observational studies, clinical trials, and reviews of the literature.
Insights & Discussion
Ripened Pu-erh tea extract demonstrates a stronger anti-diabetic impact than raw Pu-erh tea extract, potentially due to the fermentation process and its probiotic benefits to certain gut bacteria.
The methods of the study involved the processing and analysis of Pu-erh tea leaves, specifically the raw variety and the ripened type which goes through pile-fermentation. To identify differences in the anti-diabetic effects of both types, the researchers subjected their extracts to ultra-high-performance liquid chromatography paired with quadrupole-time-of-flight mass spectrometry (UHPLC-Q-TOF/MS) and UHPLC coupled with photodiode array (PDA) analyses. These techniques helped in identifying new compounds formed and those that increased due to the fermentation.
The research also performed a study observing the effects of Ripened Pu-erh Tea on beneficial gut bacteria, namely Lactobacillus, Bifidobacterium, Akkermansia, and Roseburia.
In their discussion, the researchers noted that the ripened Pu-erh tea extract exhibited more potent anti-diabetic effects on two key indicators of diabetes: two-hour postprandial blood glucose and fasting blood glucose. This superiority over the raw Pu-erh tea extract was attributed to 17 newly formed components and those that increase after fermentation such as quinic acid, gallic acid, caffeine, and puerin I. Furthermore, ripened Pu-erh tea showed to have a probiotic role on certain beneficial gut bacteria, implying an extra potential avenue for its anti-diabetic effects.
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