New gene test catches fake camellia oil in your kitchen
Shi T, Dai T, Zhou J, Li J, Zhang L
Crispr
The premium camellia oil you might buy for cooking or skincare is a common target for cheap oil substitution, and this new test means shady sellers could soon be caught with a simple color-changing strip instead of relying on expensive lab audits.
Camellia oil is a pricey specialty oil that some sellers water down with cheaper oils like soybean or corn oil to cut costs. Researchers built a portable genetic test using CRISPR technology, the same gene-editing tool making headlines elsewhere, that can spot this cheating just by reading a plant gene unique to camellia. The whole test takes under 40 minutes, needs no fancy lab gear, and you can read the result with your own eyes like a pregnancy test.
Key Findings
Detection limit of 5% (w/w) adulteration for camellia oil mixed with soybean, rapeseed, corn, or peanut oil
Full CRISPR/Cas12a assay completed within 40 minutes with visual naked-eye readout
Achieved 100% accuracy compared to traditional gas chromatography, especially at adulteration ratios of 10% or lower
chevron_right Technical Summary
Scientists developed a fast, cheap gene-based test that can detect fake camellia oil cut with cheaper oils like soybean or corn, spotting adulteration as low as 5% in under 40 minutes with no lab equipment needed.
Abstract Preview
Original paper
Rapid identification of binary and ternary adulteration in camellia oil by CRISPR/Cas12a assay.
Camellia oil adulteration, bring about a serious potential threat to consumer health and food safety, yet current chromatography-based techniques require costly instruments and trained personnel, l...
open_in_new Read full abstractAbstract copyright held by the original publisher.
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Camellia is a genus of flowering plants in the family Theaceae. They are found in tropical and subtropical areas in eastern and southern Asia, from the Himalayas east to Japan and Indonesia. There are more than 220 described species; almost all are found in southern China and Indochina. Camellias...