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Sum of the concentration (µg g−1) of the sulfur-containing volatile organic compounds (VOCs) with either the 1-propenyl moiety or the allyl moiety in the onion samples analyzed in the absence of ascorbic acid.
| 1-Propenyl | Allyl | |
|---|---|---|
| (µg g−1) | (µg g−1) | |
| Flakes | 28.73 | 0.97 |
| Rings | 3.52 | 0.28 |
