Since the brain needs its fats to survive long - term, it is paramount to protect them from oxidation (by exposure to oxygen) and from attack by invasive microbes. (healthimpactnews.com)
With the minimal exposure to oxygen, that apple will stay nearly perfect until lunch time. (onecrazyhouse.com)
Oxidative damage to fruits and vegetables results from exposure to oxygen as well as temperature and light changes (6). (drjockers.com)