Effects of cold plasma on avocado pulp (Persea americana Mill.): Chemical characteristics and bioactive compounds

摘要

The effects of cold plasma on the enzymatic activity, color, bioactive compounds, andantioxidant activity of avocado pulp with lime extract (PL) and without extract (PW)were studied. The experimental conditions applied varied with regard to time (10, 20,and 30 min) and gas flow (10, 20, and 30 ml). The gas flow combination of 20 ml/20 minapplied in PL was efficient for reducing POD and PPO activities and browning indexas well as for color maintenance. Cold plasma increased the phenolic and carotenoidlevels in PW in T1 and T2 (gas flow 10 ml/10-30 min) and in PL in T3 and T8 (gas flow30 ml/10 min and 20 ml/30 min), which contributed to the improvement in antioxidantactivity. The phenolic showed a strong correlation with ORAC-H in PL (0.85) and PW(0.75). Myristic and palmitic acid were reduced after applying cold plasma, however,oleic, linoleic, and linolenic increased the content. It is concluded that the synergisticeffect of lime extract in avocado pulp with cold plasma technology is efficient at maintainingthe quality characteristics and improving the bioactive content.