辉光放电等离子体对樱桃番茄采后贮藏品质及抗氧化性的影响OA

To investigate the effects of glow discharge plasma(GDP)on sensory quality,physiological characteristics and antioxidant capacity of cherry tomatoes during postharvest storage,the present study was conducted to optimize the GDP treatment process by response surface methodology,and to investigate its effects on the weight loss rate and decay rate of cherry tomatoes by taking the voltage,the treatment time and the electrolyte as variables.The results showed that the optimal process parameters were a voltage of 560 V,a treatment time of 20 min,and an electrolyte of Na2 SO4.Under these conditions,the fruit weight loss rate and decay rate were reduced by 10.55 and 22.31 percentage points respectively compared with the control group.Further research found that compared with the control group,GDP treatment could effectively maintain fruit hardness,delay the decline of titratable acid and soluble solids content,and inhibit the respiratory rate.In terms of antioxidant capacity,the total phenol and flavonoid contents in the treatment group increased by 37.41 and 6.62 μg·g⁻¹,respectively,while the activity of antioxidant enzymes was significantly enhanced.Therefore,GDP can slow down the decay and deterioration of fruits,delay the consumption of nutrients,enhance the antioxidant capacity of fruits and extend their storage period.This study provides a theoretical basis for the application of GDP in the storage and preservation of cherry tomatoes.