Abstract
This research was to study the effectiveness of dielectric barrier atmospheric plasma (DBD) on sunflower seed (Helianthus annuus). The DBD plasma was driven with a power of 90 watts. The samples consisted of five groups; control group, samples 1, 2, 3 and 4 being treated by DBD plasma with time limits of 30 s, 60 s, 90 s and 120 s, respectively. The physical properties and chemical properties were observed using SEM and water contact angle. Growth parameters were studied by the water uptake, seed germination, sprouts length and dry weight. Compared with the control sample the results showed the contact angle decreased and the wettability increased. The surface roughness in all conditions increased with increased power. With bigger power the water absorption decreased and super hydrophilic was achieved with 120 s treatment. The water uptake of plasma produced the best result using the DBD plasma treatment of 120s. The distribution of sprouts length and the dry weight both increased with increased power. The DBD plasma treatment on sunflower seeds improves seed germination rate and lead to a significant change in wettability and growth parameter.
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