Absrtact: Portulaca oleracea was treated by hot air drying equipment, microwave drying equipment and vacuum freeze drying machine respectively. The total phenol content, total antioxidant capacity, reduction capacity, DPPH scavenging capacity, hydroxyl radical scavenging capacity and superoxide anion radical scavenging capacity of the methanol extract of Portulaca oleracea powder were determined, and different drying recipes were studied. The effects of different methods on total phenol content and antioxidant activity of Portulaca oleracea powder were studied.
Key words: Portulaca oleracea microwave drying; drying method; total phenols; antioxidant activity
Portulaca oleracea is an annual fleshy herb of Portulaca oleracea. As a healthy functional vegetable, Portulaca oleracea is rich in polyphenols, flavonoids and polysaccharides. Besides being edible, it has certain medicinal value. Portulaca oleracea powder can be added to noodles, bread and biscuits as functional ingredients to bring additional nutritional and health benefits to food.
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