Question

How are phytohormones and animal hormones destroyed?

Answer 1

Plant hormones (also known as phytohormones) are chemicals that regulate plant growth. In the United Kingdom, these are termed 'plant growth substances'.

Plant hormones are signal molecules produced within the plant, and occur in extremely low concentrations. Hormones regulate cellular processes in targeted cells locally and, moved to other locations, in other functional parts of the plant. Hormones also determine the formation of flowers, stems, leaves, the shedding of leaves, and the development and ripening of fruit. Plants, unlike animals, lack glands that produce and secrete hormones. Instead, each cell is capable of producing hormones. Plant hormones shape the plant, affecting seed growth, time of flowering, the sex of flowers, senescence of leaves, and fruits. They affect which tissues grow upward and which grow downward, leaf formation and stem growth, fruit development and ripening, plant longevity, and even plant death. Hormones are vital to plant growth, and, lacking them, plants would be mostly a mass of undifferentiated cells. So they are also known as growth factors or growth hormones. The term 'Phytohormone' was coined by Thimann in 1948.I don't think steroid hormones break down very easily at normal cooking temperatures. They are made of cholesterol, a substance that is quite resistance to breakdown by heat. As for the hormones. I do not think they break down by heat... but not sure. I will have to check my phamacology book. But I dont think they are broken down by heat.
In Norway, it is illegal to use hormones in animals meant for consumption. If a cow gets sick, they are given antibiotics but neither their milk nor meat can be used for weeks after going off of the antibiotics... it must be out of their system before consumption. These laws make me think that antibiotics/hormones would carry over into eaten meat.