Sounds like some of my own work, I hypothesized that the body doesn’t need food itself, merely the chemicals and elements it contains. So, what if I consumed only the raw ingredients the body uses for energy? Soylent was the obvious choice because our bodies do not need food.
There is no magic "food" quality that is granted to chemicals, at the end of the day you need your macro and micro nutrients and that's it. As it stands we're also well adapted for finding and consuming nutrition, so we've evolved means of enjoying consuming those chemicals in certain ratios.
Hmm a spiritual concept. Matthew 4:4: But he answered and said, it is written, Man shall not live by bread alone, but by every word that proceedeth out of the mouth of God. and Luke 4:4: And Jesus answered him, saying, It is written, that man shall not live by bread alone, but by every word of God.
Nutrition is hardly a "solved" science, but your body needs more than raw elements to live. You cant just eat a plate of carbon, hydrogen, and oxygen (some of the most common elements in organic chemistry).