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KMID : 1134820150440060823
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Journal of the Korean Society of Food Science and Nutrition
2015 Volume.44 No. 6 p.823 ~ p.831
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Evaluation of Biological Activity and Analysis of Functional Constituents from Different Parts of Mulberry (Morus alba L.) Tree
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Choi Sang-Won
Lee Yu-Jin
Ha Se-Bee
Jeon Young-Hee
Lee Dong-Hee
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Abstract
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Evaluation of biological activity and analysis of functional constituents from water and ethanol extracts of four different parts of mulberry (Morus alba L.) tree were carried out to develop functional ingredients and foods using extracts of mulberry tree. The water and ethanol extracts of four different parts of mulberry tree were prepared and their biological activities and functional constituents determined by in vitro assays and HPLC, respectively. In general, ethanol extracts showed stronger biological activities and higher functional constituents than water extracts. Ethanol extracts of mulberry fruit, root bark, and twig showed stronger antioxidant (IC50=128.4 μg/mL), α-glucosidase (IC50=12.0 μg/mL), and lipoxygenase (IC50=36.3 μg/mL) and tyrosinase (IC50=410.3 μg/mL) inhibitory activities, respectively, than those of other parts. Mulberry fruit and leaf showed the highest contents of anthocyanin (cyanidin 3-glucoside: 213.20 mg/100 g) and chlorogenic acid (514.97 mg/100 g), and especially ethanol extract of mulberry leaf contained higher quercetin 3-O-(6-O-malonyl)glucoside (143.25 mg/100 g) and kaempferol 3-O-(6-O-malonyl)glucoside (30.25 mg/100 g) contents without water extract of mulberry leaf. Meanwhile, mulberry twig contained both oxyresveratrol glycoside (48.90 mg/100 g) and its aglycone (21.88 mg/100 g), whereas mulberry root bark contained mostly oxyresveratrol glycoside (724.05 mg/100 g). Additionally, mulberry root bark and leaf contained much higher γ-aminobutyric acid (223.90 mg/100 g) and 1-deoxynojirimycin (86.07 mg/100 g) contents, respectively, than other parts of mulberry tree. These results suggest that high quality processed foods and functional foods using mixtures of mulberry fruits, leaves, twigs, and root barks should be developed for prevention and inhibition of several pathological disorders.
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KEYWORD
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mulberry (Morus alba L.) tree, four different parts, water and ethanol extracts, biological activities, functional constituents
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