@phatch - Oligosaccharides are not starches but rather small sugars, and most people can digest them into monosaccharides, which can be absorbed in the small intestine (with lactose being a major example of an oligosaccharide that many people cannot digest). Starches are large molecules composed of monosaccharides in branching chains; this type of complex sugar is known as a polysaccharide. Starches are produced by plants as a source of stored energy for the plant. People can break down starches via amylase (which is a digestive enzyme most notably produced in salivary glands and in the pancreas) and then utilized as energy. The part of the bean we digest and absorb is virtually all starch. Another example of a starch rich food is a potato.
What you're referring to is cellulose, which like starches are polysaccharides made of individual sugars; cellulose is used as structural support by plants. The difference between cellulose and starches is the type of chemical bonds that join the individual sugars. The animal enzyme, known as amylase, is able to break the starch bonds, but not the cellulose bonds. Cows and termites are the notable examples of animals that can use cellulose for energy. Interestingly they don't possess the enzymes to metabolize cellulose. However, they are able to utilize their host bacteria to help them harvest the sugars in the cellulose. The cellulose in beans is the seed coat. The gas (methane and hydrogen) that is created by the breakdown of cellulose (along with undigested simple sugars and starches that make their way undigested into the colon) are what produce flatulence.
Some insightful corrections to your explanation: Some people cannot digest lactose because they lost the ability to manufacture lactase (a digestive enzyme) after childhood (like all mammals do except humans).
Humans never have the enzymes to digest non-glucose polymer chains like oligosaccharides which are often composed of other saccharides like fructose, galactose, etc.. Oligosaccharides are digested by gut microflora only and flatulence occurs or not depending on which type of bacteria digests the oligosaccharides.
Lactase deficient individuals have flatulence because gut bacteria digest the lactose for them (not the enzyme).
Humans, any animal, lack the enzymes to digest cellulose. Cows and termites can digest cellulose because of their gut microflora. They emit methane. Humans emit mostly air, hydrogen and little methane that has nothing to do with cellulose digestion.
I grant you that, as a mix disaccharide, lactose could be considered an oligosaccharide. Oligo meaning small chain. But it does not because an oligosaccharide is composed of at least 2 non-glucose saccarides linked together in the chain which renders it indigestable by human enzymes. If lactose (glucose+galactose) was and oligosaccharide sucrose (table sugar Glucose+fructose) would be as well.
Sorry? do you really mean arroz negro? like spanish paella but black? the colour black in the arroz negro is make by the natural ink of the "sepia" or calamar
If it's sat out for more then a couple hours total, it needs to go! You'll be more then tooting!
All you tooters, a little epazote goes a long way.
A lot of people like to have rosemary, basil,around the yard. zote is just as important. It grows like a weed, um, it is one I think.