3 methyl 1 butyl acetate

Sodium sulfide, methanethiol (MeSH), dimethyl disulfide (DMDS), dimethyl trisulfide (DMTS), diisopropyl disulfide (DIDS), hexanoic acid, octanoic acid, phenethyl alcohol, 3-methyl-1-butanol, 2-methyl-1-propanol, ethyl acetate, 3-methyl-1-butyl acetate, ethyl hexanoate, and ethyl decanoate were from Sigma-Aldrich (St. Louis, MO, USA). Ethyl octanoate was from Eastman (Rochester, NY, USA). Methyl thioacetate (MeSOAc), ethyl thioacetate (EtSOAc), and diethyl sulfide (DES) were from Alfa-Aesar (Ward Hill, MA, USA). Ethyl methyl sulfide (EMS), dimethyl sulfide (DMS), diethyl disulfide (DEDS), methyl isopropyl sulfide (MIS), and ethyl isopropyl sulfide (EIS) were from TCI America (Portland, OR, USA). Methanol was from EMD Chemicals Inc. (Gibbstown, NJ, USA), l-tartaric acid from J.T. Baker (Phillipsburg, NJ, USA), and ethanol was from Koptec (King of Prussia, PA, USA).

A mixture of fungal VOCs containing fusel alcohols and acetates: 3-methyl-1-butanol (Sigma- Aldrich, 95%), 2-methyl-1-butanol (Sigma-Aldrich, 9%), 3-methyl-1-butyl acetate (Sigma-Aldrich, 95%), 2-phenylethanol Sigma-Aldrich, 99%), 2-methyl-1-butyl acetate (Sigma-Aldrich, 99%), and 2-phenylethyl acetate (Sigma-Aldrich, 98%) was prepared at a ratio of 1:1:1:1:1:1 (v/v). The actual release rates of the dispensers were determined in the laboratory under ambient conditions (25°C, 0.5 m/s airflow) using the gravimetric method (Table 1). Three replicates of each dispenser type were weighed for 10 days at regular intervals, and weight loss was recorded to the nearest 0.0001 g using a fine balance. The average release rate for each dispenser type was calculated based on the average weight loss over 24 h. Additionally, the average release rate of dispensers, under natural field conditions, was determined using the gravimetric method by periodically weighing the dispensers used in the field.