Changes in Storage Stability and Degradation Kinetics of Starch-based Lycopene Complexes
The storage stability and degradation kinetics of amylose-lycopene complexes(ALC)were studied by evaluating various indicators,such as color attributes,antioxidant efficacy,and lycopene retention rate.ALCs demonstrated excellent color stability,exhibiting no significant color changes in the initial seven-day pre-storage period.After 28 days of storage under anoxic conditions at ambient temperature and being shielded from light,the complexes exhibited a 26.51％color degradation rate.Moreover,ALCs had a high lycopene retention rate of 65.84％and an effective scavenging capacity for DPPH radicals of 23.54％,both significantly surpassing the amylose-lycopene physical blend of the control group,which showed a retention rate of 11.37％and a scavenging rate of 4.97％(P＜0.01).ALC lycopene degradation over the storage duration adhered to a second-order kinetic model,with a half-life(T1/2)of 57.99 days and a one-tenth life(T9/10)of 8.78 days,substantially outperforming that of the control group at 8.70 and 1.32 days,respectively.The results underscore the superior storage stability of ALCs,which effectively preserve the color,content,and antioxidative properties of lycopene,thus providing a theoretical groundwork for stabilizing functional components of plant-derived lycopene.
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