Effects of Different Exogenous Supplements on the Quality of Stored Broccoli
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Abstract:
This study tested the effects of five exogenous supplement treatments on the preservation of harvested broccoli. Treatments included 200 mg/L gibberellic acid (GA), 200 mg/L GA + inorganic salt nutrient solution, 50 mg/L 6-benzylaminopurine (6-BA), inorganic salt nutrient solution, and 50 mg/L 6-BA + inorganic salt nutrient solution, with water as the control. The appearance (color change), nutrient content (vitamin C, total soluble solids, chlorophyll, and water activity), and other physiological and biochemical characteristics (mass loss rate, relative conductivity, and malondialdehyde content) of broccoli samples in different treatment groups were analyzed and compared over the storage period. The exogenous supplements effectively inhibited increases in mass loss rate, relative conductivity, and malondialdehyde content, as well as suppressed chlorophyll degradation and maintained higher water, vitamin C, and total soluble solid content. In particular, the treatment consisting of 200 mg/L GA + inorganic salt nutrient solution maintained the highest total soluble solid (7.27%) and vitamin C (27.53 mg/100 g fresh weight [Fw]) contents, a high chlorophyll content (5.57 mg/100 g Fw), and the lowest malondialdehyde content (15.31 nmol/g Fw) after 28 days of storage; hence, it is recommended as the best preservation method among the five tested treatments.
