Insights & Discussion
Dark chocolate exerts prebiotic effects and may improve negative emotional states via the gut-brain axis.
To assess the association between the mood-altering effects of dark chocolate and the gut microbiota, we performed fecal 16S rRNA sequencing analysis for the DC85 and CON groups. Gut microbial diversity was significantly higher in DC85 than CON (P<.05). Blautia obeum levels were significantly elevated and Faecalibacterium prausnitzii levels were reduced in DC85 compared to CON (P<.05). Furthermore, we found that the observed changes in negative affect scores were negatively correlated with diversity and relative abundance of Blautia obeum (P<.05).
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Goji berries, notably their polysaccharides, exhibit protective effects against inflammatory bowel disease through the preservation of healthy gut microbiota.
2022 Critical Reviews in Food Science and Nutrition Prebiotic effects of goji berry in protection against inflammatory bowel disease Sun Q, Du M, Kang Y, Zhu MJ
Review Article Goji Berry Gut Microbiota Inflammatory Bowel Disease
The review encompassed an in-depth analysis of current literature specially focusing on the role of goji berry and its important functional constituents in countering Inflammatory Bowel Disease (IBD). The core attentiveness of the research is directed towards understanding the interplay between goji berries, particularly their polysaccharides, and gut microbiota. The goji berries’ protective effects were evaluated, focusing on how they curb disruption in gut microbiota, a common facet in IBD.
The review concluded that goji berries, especially their polysaccharides, demonstrated appreciable benefits in averting gut microbiota disturbances seen with IBD, thus protecting against this condition. These natural substances, present in goji berries, function as prebiotics, which maintain a balanced gut microbial ecosystem. The research further revealed that proper functioning of gut microbiota and their metabolites was a crucial element in mediating these beneficial effects against IBD, thus cementing the role of dietary interventions in managing diseases linked with gut health.
Cocoa polyphenols promote gut health by favorably altering gut microbiota composition and producing secondary bioactive metabolites with antioxidant and anti-inflammatory properties.
2020 Nutrients Cocoa Polyphenols and Gut Microbiota Interplay: Bioavailability, Prebiotic Effect, and Impact on Human Health Sorrenti V, Ali S, Mancin L, Davinelli S, Paoli A, Scapagnini G
Cocoa Dark Chocolate Prebiotic
The study revolves around observing the effects of dietary intake of cocoa polyphenols, bioactive compounds with antioxidant and anti-inflammatory properties, on gut microbiota. These polyphenols have poor absorption in the gut and hence, rarely enter the systemic circulation in their natural forms. Instead, through a bidirectional interaction with the gut microbiota, they stimulate the proliferation of beneficial bacteria and inhibit the growth of harmful ones, thereby acting as a prebiotic.
The resulting metabolites from this interaction are bioavailable, and these enter the circulation to reach target organs. The metabolites exhibit substantial antioxidant and anti-inflammatory activities, which improve gut health. These actions augment immunity and reduce the risk of many diseases, documenting a notable health-protective potential of cocoa polyphenols, routed via modulation of gut microbiota composition.
Goji berry polysaccharide can enhance intestinal microbiota and beneficial bacteria levels, whilst modulating the innate immune response.
2020 Biomedicine & Pharmacotherapy Prebiotic, immuno-stimulating and gut microbiota-modulating effects of Lycium barbarum polysaccharide Zhu W, Zhou S, Liu J, McLean RJC, Chu W
Experimental Study Gut Microbiota Prebiotic
The study used both in vitro and in vivo methodologies to evaluate the prebiotic effect of Lycium barbarum polysaccharide (LBP), and its potential impact on the composition of fecal microbiota and the innate immune response. In vitro studies showed that LBP supported the growth of selective probiotic bacteria. For the in vivo portion of the study, mice were given LBP, and subsequent alterations in their fecal microbiota were observed.
The results demonstrated that the administration of LBP significantly increased the abundance of certain beneficial bacteria within the mice's intestinal microbiota. Specifically, the presence of Proteobacteria and Firmicutes were enhanced, while the ratio of Bacteroidetes was reduced. At the genus level, the presence of potentially probiotic genera like Akkermansia, Lactobacillus, and Prevotellaceae increased. It was also observed that the concentrations of TGF-β and IL-6 in serum and sIgA in colon content significantly heightened. The study also noted a significant difference in the thymus and spleen indices of mice treated with LBP when compared to a control group.