Effect of convective solar drying on colour, total phenols and radical scavenging activity of olive leaves (Olea europaea L.)
作者： Neila Bahloul , Nourh��ne Boudhrioua , Mohammed Kouhila , Nabil Kechaou
DOI: 10.1111/J.1365-2621.2009.02084.X
关键词:
摘要: In this study, olive leaves, which are known for their therapeutic and antioxidant properties, were used to assess the effect of solar drying conditions (temperature flow rate) on time quality parameters leaves. Samples dried at three temperatures (40, 50 60 °C) two air rates (1.62 3.3 m 3 min ―1 ) in a convective laboratory dryer. From experimental results, it was noted that required reduce moisture content 0.10 kg d.b. depends mainly temperature. The attributes dehydrated leaf samples investigated term colour, total phenols radical scavenging activity. L* , * b significant (P < 0.05) all studied Besides, leaves significantly influenced by tended decrease with increased time. DPPH activity higher fresh [EC 39.40 (ZR)-39.95 (CH)] than However, also high °C, 54.21 (ZR)―68.79 (CL)].
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