All the dyes (Table S1) were purchased from Sigma-Aldrich (Merck KGaA, St. Louis, MI, USA). Anhydrous ethanol (≥99.5%) and ethyl acetate were purchased from Sinopharm. Trans-2-hexenal and benzaldehyde were purchased from Sigma-Aldrich. Hexyl acetate, (+)-limonene, β-myrcene, 3-carene, and isoamyl acetate were purchased from Aladdin Biochemistry Technology Co., Ltd (Shanghai, China).
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