@Nicklbak Let’s say someone eat one meal of pasta. And this pasta gives you 120 grams of carbs. A person with a normal digestive system should be able to digest this without problems.
However, sugar is much harder to digest as a large meal. So if someone would eat 120 grams of carbs in the form of 120 gram of sugar in one meal, it will very likely cause digestive problems. Intuitively, people know that I guess, as not many people would be attracted to the idea of eating so much sugar in one sitting.
@CuriousBen I don’t think this a very stupid question, and don’t confuse me with an expert either !
I’m still not sure why one would choose for dextrose or maltodextrine. Besides of taste, they seem almost equal to me. I would have guessed that dextose may be some what easier to digest, but it seems like they are both very easy digested. They have similar glycemic index, they both end up as glucose. The only reason I can think of is taste/price if someone would choose for one of the two. I’m curious why Rob has chosen for maltodextrine.
As it comes to your mixture, to add some sugar doesn’t sound to bad to me, I think there are very few people living on 0% fructose in their diet. There are some experts that claim it is good to decrease fructose in the diet, but I don’t think they mean it as drastically as Rob does in soylent. If it comes to glycogen synthesis (after workout), it is better to add some fructose. They compared the following drinks:
- 2/3 maltodextrin, 1/3 fructose;
- 2/3 maltodextrin, 1/3 glucose;
- 2/3 maltodextrin, 1/3 galactose.
Liver glycogen was measured every two hours with carbon-13 magnetic resonance imaging. Here were the results:
So 67% glucose / 33% galactose did the best, 67% glucose 33% fructose was close behind, and 100% glucose lagged.
Why does the 100% glucose drink underperform? One reason is that fructose and galactose, but not glucose, are preferentially targeted to the liver:
A factor of potentially larger magnitude in enhancing liver glycogen
synthesis is the differential postabsorptive fates of fructose and
glucose. Glucose is a relatively poor direct substrate for liver
glycogen synthesis (24,27). Much of it is released from the liver into
the systemic circulation to be stored as muscle glycogen (3,7). In
contrast, fructose is primarily taken up by the liver …