Alam dan Manusia

by Paul Bergner

Recent research has shown an important physiological action for inulin (Gibson, Roberfroid). Like some pectins and fructooligosaccharides, inulin is a preferred food for the lactobacilli in the intestine and can improve the balance of friendly bacteria in the bowel. Subjects in one trial were give 15 grams of inulin a day for fifteen days. Lactobacillus bifidobacteria increased by about 10% during that period. Gram-positive bacteria associated with disease declined. Bifidobacteria digest inulin to produce short chain fatty-acids, such as acetic, propionic, and butyric acids. The first two may be used by the liver for energy production, while butyric acid has cancer-preventing properties within the intestine (Spiller, 1994). Recent animal research also shows that inulin prevents precancerous changes in the colon (Reddy, 1997).

Table 1 shows the plants with the highest inulin content listed on the U.S. Department of Agriculture phytochemical database. Each of these plants, with the exception of Echinacea, have been used in ethnomedicine to improve intestinal health. Echinacea has not been traditionally consumed as a decoction or eaten in food quantities, and thus the amount of inulin ingested would not be significant. It would not necessarily be desirable to prepare it as a tea, because key immune-stimulating constituents are only soluble in alcohol. Saussurea is commonly used in traditional Chinese medicine as a "spleen tonic" or digestive tonic. In some regions of China, Inula helenium is freely substituted for saussurea (Hsu). Note that elecampane, although pigeonholed by modern North American herbalists as a lung tonic, was used by the Eclectics both as a lung and digestive tonic (Felter). Another common Chinese digestive and "spleen" tonic that contains inulin is codonopsis, an ubiquitous ginseng substitute in contemporary traditional Chinese medicine.

Source : medherb.com