Topic Guide
What Is Food safety?
Food safety is a subject covered in depth across 2 podcast episodes in our database. Below you'll find key concepts, expert insights, and the top episodes to listen to — all distilled from hours of conversation by leading experts.
Key Concepts in Food safety
Hexane extraction
This is the process by which most commercial seed oils are extracted from seeds using hexane, a non-polar solvent. The episode explains its use due to efficiency and low boiling point, and the subsequent steam removal, arguing that the conditions are not conducive to significant oil oxidation or harmful hexane residue.
Bioaccumulation (and lack thereof for hexane)
Bioaccumulation refers to the gradual build-up of substances in an organism. The episode discusses this concept to explain why trace amounts of hexane in seed oils are unlikely to cause harm, asserting that hexane does not bioaccumulate to appreciable levels and is efficiently cleared by the body.
Black plastic dangers
Black plastic food containers are frequently manufactured from recycled electronics, which means they contain flame retardants. These chemicals have been shown to leech into food and be absorbed by the body, especially when hot, posing a significant health risk.
Chemical leeching acceleration
This concept highlights that chemicals like BPA and phthalates leech from plastic containers into food at a much faster rate when exposed to heat or acidic substances. Therefore, hot or spicy meals served in plastic are particularly problematic compared to cold or neutral foods.
Pyrex glass & bamboo solution
Introduced as the ideal solution for safe food storage and takeout, Pyrex glass containers with bamboo lids are praised for being inert and preventing plastic contact with food. This combination offers the best defense against chemical and microplastic exposure from packaging.
What Experts Say About Food safety
- 1.Industrial processing of seed oils, including heating, refining, and solvent extraction, is often cited as a primary concern, separate from the oils' linoleic acid content.
- 2.Hexane is used as a non-polar solvent for efficient oil extraction from seeds due to its ability to mix with oils and its relatively low boiling point of 69 degrees Celsius.
- 3.The steam and temperature used to evaporate hexane from crude oil are typically low and brief (minutes to an hour), generally insufficient to cause significant oxidation of the seed oils.
- 4.Residual hexane levels in commercially processed seed oils are extremely low, often non-detectable or ranging from 0.05 to 0.5 parts per million.
- 5.To experience even mild side effects from hexane ingestion, a person would need to consume an unrealistic 11,340 kg of oil at one time.
- 6.Hexane does not significantly bioaccumulate in the human body, which possesses mechanisms to convert it to innocuous compounds and clear it efficiently.