Therefore, sheep cheese is pretty much always naturally white. In the cow it’s a different metabolic pathway. Beta carotene, ...

The three enzymes added to the rice constitute a complete biosynthetic pathway for beta carotene, and the resulting golden-colored grains should provide a good source of vitamin A for some of the ...

The study demonstrates a significant increase in β-carotene (provitamin A), zeaxanthin ... combining modifications in different biochemical pathways, allowing the researchers to enhance multiple ...