Red Pears protective effects against intestinal inflammation and barrier dysfunction

Red pears can beneficially impact gut health through their polysaccharides (particularly pectins), polyphenolic compounds, and dietary fiber, which modulate the gut microbiota composition, enhance short-chain fatty acid (SCFA) production, and strengthen the intestinal barrier.

Pear polysaccharides demonstrate protective effects against intestinal inflammation and barrier dysfunction.

In animal models of inflammatory bowel disease,

'Nanguo' pear polysaccharides

• Reduced disease activity, decreased inflammatory cytokines (TNF-α, IL-6, IL

• Promoted intestinal barrier protein expression (MUC2, Occludin, ZO-1)

• Increased SCFA production.

Laiyang pear polysaccharides

• Mitigated intestinal injury by suppressing the NF-κB signaling pathway

• Enhanced tight junction protein expression.

Pear consumption favorably alters gut microbiota composition.

Pear polysaccharides

• Increased the abundance of beneficial bacteria including (Akkermansia muciniphila, Lachnospiraceae, and Oscillospirales),

• Decreased the Firmicutes/Bacteroidetes ratio—a marker associated with improved metabolic health.

 Pear pectin, undergoes fermentation primarily in the large intestine, metabolized by gut microbiota to produce SCFAs, particularly acetate.

Pectins specifically stimulate beneficial bacteria such as (Lachnospira eligens and Faecalibacterium prausnitzii).

The polyphenolic compounds in red pear varieties, including anthocyanins concentrated in the peel, may provide additional benefits, as anthocyanin-rich diets have been shown to reduce the Firmicutes/Bacteroidetes ratio and increase SCFA production.

Short-chain fatty acids (SCFAs)—primarily acetate, propionate, and butyrate—are crucial metabolites produced by gut bacteria fermenting dietary fiber.

• Energy to colon cells, maintain gut barrier integrity, reduce inflammation, and regulate immune function.

• Improve metabolic health (insulin sensitivity, weight management) and show potential for preventing cancer and neurodegeneration.