Plants defend their seeds with compounds that may not be beneficial for human consumption.

“these are very very highly defended because these are the final repository of the dna of these plants and they are the place where the plants are putting all their energy to move the dna to the next generation if those are not full of defense chemicals they will get eaten in abundance they will get eaten overly aggressively by herbivores and the plants will not pass on their dna the next generation and the plant will go extinct”