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Effect of Soaking in Plasma-Activated Liquids (Pals) on Heavy Metals and Other Physicochemical Properties of Contaminated Rice Publisher



Bohlooli S1 ; Ramezan Y1, 2 ; Esfarjani F3 ; Hosseini H4, 5 ; Eskandari S6, 7
Authors

Source: Food Chemistry: X Published:2024


Abstract

In this study, plasma-activated liquids (PALs) were produced by a cold plasma gliding arc device at two different exposure times (7.5 and 15 min) and compared with deionized water (DW) as a control. The results showed that the amount of arsenic (As: 98 %), cadmium (Cd: 93 %), and lead (Pb: 93.3 %) were significantly decreased in all samples after soaking in PALs and DW than raw rice (p < 0.05). However, 15-min PALs were more successful. All soaked samples did not exceed the maximum residue limits (MRLs). A softer and easier chewing texture was observed for rice samples soaked in PALs than the sample soaked in DW. The samples treated with PALs also showed a lower gelatinization temperature and enthalpy. The color parameters and microstructure of rice samples were affected by treatment with PALs. Therefore, soaking rice in PALs before cooking can be considered an effective method to reduce the heavy metals in rice. © 2024 The Author(s)
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