The Claim
The in vitro digestibility of soy-based products is positively correlated with the amount of soluble protein released by SDS and urea treatment (SB-SA), indicating that protein structures stabilized by non-covalent interactions are more accessible to digestive enzymes than those stabilized by covalent disulfide bonds.
What the research says
Roughly balanced
Support and challenge are close. The picture may shift as more studies come in.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In laboratory tests, soy proteins that break apart more easily under chemical treatment are digested more completely by enzymes, because their structure is held together by weaker bonds rather than strong covalent links.
See the scientific wording
The in vitro digestibility of soy-based products is positively correlated with soluble protein content released by SDS + urea (SB-SA), indicating that protein structures stabilized by non-covalent interactions (hydrogen bonds, hydrophobic forces) are more accessible to digestive enzymes than those stabilized by covalent disulphide bonds.
Soy proteins held together by weak bonds like hydrogen bonds and hydrophobic forces easily fall apart in the stomach and intestines, exposing their inner parts to digestive enzymes. Proteins held together by strong chemical links called disulfide bonds stay tightly packed and resist breakdown. Large clumps of protein and fat also block enzymes from reaching the protein inside, slowing digestion until the fat is broken down.
What the research says
1 studySoy proteins that dissolve easily when treated with chemicals that break weak bonds are easier for the body to digest, while proteins held together by strong chemical links are harder to break down. The study found exactly that: the more easily soy proteins dissolved in these chemicals, the more digestible they were.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.