Effect of Hydroxypropyl Methylcellulose-Beeswax Composite Edible Coatings Formulated with or without Antifungal Agents on Physicochemical Properties of Plums during Cold Storage

Table 3

CO₂ production rate and ethanol and acetaldehyde content in the juice of “Friar” plums uncoated or coated with hydroxypropyl methylcellulose-beeswax edible coatings containing potassium sorbate (PS), sodium methyl paraben (SMP), or sodium ethyl paraben (SEP) and stored at 1°C for 11 or 22 d followed by 5 d at 20°C.

Food preservative	11 d at 1°C + 5 d at 20°C			22 d at 1°C + 5 d at 20°C
	CO2; (mL kg^−1 h^−1)	Ethanol; (mg L^−1)	Acetaldehyde; (mg L^−1)	CO2; (mL kg^−1 h^−1)	Ethanol; (mg L^−1)	Acetaldehyde; (mg L^−1)
Control
Control
PS
SMP
SEP

At harvest: CO₂ production rate = 20.02 ± 0.71 mL/kgh; ethanol content = 0.36 ± 0.12 mg/L; acetaldehyde content = 0.10 ± 0.02 mg/L; A: uncoated; Control B: coating without antifungal agent. Mean values with different letters within the same column are significantly different according to Duncan’s multiple range test () (mean ± SE; ).