1.2 Flavonoids
The Morus plants are known to be abundant in flavonoids and are
shown in figure 2. The flavonoids in the mulberry leaves are mainly in
the forms of quercitin and kaempferol [12]. Kuwanons,
moracinflavans, moragols andmorkkotins are some of the main flavonoids
found in mulberry leaves. The total contents of isoquercetin, rutin,
kaempferol and astragalin are ranging from 4.34 mg/g to 0.53 mg/g
[13].The major antioxidant flavonoids are flavonol, glycosides,
rutin, quercitin-3-(6-malonylglucoside) and isoquercitin have been
extracted from the leaves of mulberry [4]. The flavonoids possess
many medicinal properties like anti-inflammatory, antioxidant,
antiallergic, antithrombotic, hepatoprotective, antiviral and
carcinogenic in human being.