Flatulence (gastro intestinal gas)

Alternative Nutrition

Bananas contain "fructooligosaccharide, a compound called a prebiotic because it nourishes probiotic (friendly) bacteria in the colon. These beneficial bacteria produce vitamins & digestive enzymes that improve our ability to absorb nutrients, + compounds that protect us against unfriendly microorganisms.
When fructooligosaccharides are fermented by these friendly bacteria, not only do numbers of probiotic bacteria increase, but so does the body's ability to absorb calcium.
In addition, gastrointestinal transit time is lessened, decreasing the risk of colon cancer. 
Green bananas contain indigestible (to humans) short chain fatty acids (SCFAs) that are a favorite food of the cells that make up the lining of the intestines. When these cells are well-nourished & healthy, the body's ability to absorb nutrients such as calcium can increase dramatically." http://www.whfoods.com/genpage.php 
(Thus one could blend these green bananas for infants or adults with intestinal problems.)
A "leaky gut" syndrome may be remedied by adding bananas & apples to hot or cold rice.
Betaine HCL (hydrochloric acid) has a low ph & helps to destroy ingested bacteria & microorganisms.  www.purecaps.com
Bromelain enzyme from the pineapple stem aids digestion.  Between meals it inhibits inflammation. www.purecaps.com
Cardamom seed may help relieve gas per Rodale's The Prevention Total Health System - Everyday Health Hints
L-glutamine may reduce flatulence.  www.biochemicals.com
The white mushroom Agaricus bisporis or it's champignon extract helps to detoxify the kidneys and liver, modify breath, modify body and gastrointestinal odor, improves creatinine levels, + reduces body ammonia, indole, skatole, trytamine, cercaptan, hydrogen sulfide & amine.  www.purecaps.com
Tempeh is a fermented soybean that is very beneficial.  Japanese microbiologist Iichiroh Ohhira developed a live probiotic containing a TH 10 lactic acid bacteria to help optimize colon PH & suppress bad bacteria.  www.unikeyhealth.com
Tryptophan - Erdmann in The Amino Revolution recommends exercise, live raw vegetables & fruit, free form amino acids: tryptophan (5HTP) (take PM ), histidine, glycine, taurine + calcium, zinc, vitamins B1, B2, B6, C  www.amazon.com