How LED and fluorescent light change soya oil taste
What it found
People could taste a difference in soya oil after just 32 hours under LED lights.
Better packaging might prevent this change.
What they found
Studies in people
Taste changes from light
A group of 66 people could detect a difference in soya oil after only 32 hours under LED lights. This was found in people tasting the oil.
LED versus fluorescent light
In a test with 21 people, oil kept under LED lights tasted different from oil under fluorescent lights. Both differed from oil kept in the dark.
Liking the oil
A group of 94 consumers did not clearly like the light-exposed oil less than the shielded oil. There was a slight trend toward lower liking for exposed samples.
Other findings
Oxygen scavenging helps
Adding oxygen-absorbing materials lowered dissolved oxygen levels in the oil during light exposure. This relates to how the oil is packaged rather than a health effect.
What the authors conclude
- They suggest that soya oil may reach shoppers with a different quality than intended due to light damage.
- They advise that better packaging technologies could help deliver higher quality soya oil to the market.
How it was done
Soya oil is widely used but its fats can be damaged by light over time. The authors wanted to measure how much light changes the oil.
They put soya oil in plastic bottles under LED or fluorescent lights, both at 2000 lux. They then asked groups of people to taste the oil. Groups included 66 for threshold testing, 21 for flavour profiling, and 94 for liking tests.
What it can’t tell you
- We summarised it from the abstract only.
- This work measured taste and packaging, not health effects.
- It cannot show whether light-damaged soya oil affects your body differently.
Who paid
- Funding
- Funded by U.S. Department of Agriculture (from the PubMed record).
- Authors work at
- Cornell University, USA
The paper
- Title
- Effects of LED exposure on the sensory properties of soybean oil
- Type
- Study
- Evidence
- Studies in people
- Summarised from
- Abstract only
- Cite
- Zhou P, Lawrence P, Abbaspourad A, Dando R (2022). Effects of LED exposure on the sensory properties of soybean oil. Journal of food science. doi:10.1111/1750-3841.16286PubMed 35986922DOI
Summary written 1 Oct 2026. Check it against the paper before it changes what you eat. How we summarise papers · Report an error