• Korean Journal of Plant Resources
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• v.13 no.1
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• pp.25-28
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• 2000

The experiments were carried out to investigate the antimicrobial activity and the content of isoflavonoids each fraction of the methanol extract from Korean arrowroots. The strongest antimicrobical fraction of the methanol extract was the etylacetate fraction and the other fraction was not detected antimicrobial activity. The yield of the ethylacetate fractation was 7~9% of the methanol extract of Korean arrowroot TLC was carried out using silical gel plate and CH$_2$C1$_2$- $CH_3$OH(7 : 3) and puerarin, daizin were detected by spraying 10% H$_2$SO$_4$ and Rf was 0.60 and 0.69, respectively. Puerarin, daidzin and daidzein contents were determined of the ethylacetate fraction of the sample Puerarin and daidzin contents were abundant in the samples of November, while daidzein content was abundant in the sample of Februery.

• Journal of Food Hygiene and Safety
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• v.2 no.3
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• pp.89-95
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• 1987

This studies was performed to investigate the quality control of Pueraria RadiI tea. Experimental subjects were 8 kinds of tea and wet and dry Pueraria RadiI which were collected from the Seoul area. For standards, Daidzein and Daidzin were isolated from Pueraria Radix. Analysis method was carried out by HPLC using ${\mu}-Bondapark{\;}C_{18}$ column and UV 254 nm detector. Samples were extracted with methanol by Cold method (at room temperature for 24 hours) and Hot extraction method (at $^{\circ}C$ for 4 hours) Pueraria radix contained 0.08% Daidzein and 0.66% Daidzin Most of the Pueraria Radix tea contained extract of Pueraria Radix less than the labled amounts listed.

• Asian-Australasian Journal of Animal Sciences
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• v.22 no.2
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• pp.260-266
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• 2009

The effects of ${\beta}$-glucosidase on the overall growth performance and a set of physiological parameters of broilers were investigated. 240 male, one-day old Avine broiler chickswere randomly allocated to four treatment groups and fed with a corn-soybean meal supplemented with 0% (control), 0.2%, 0.4% and 0.6% ${\beta}$-glucosidase. The 0.2% ${\beta}$-glucosidase group, but not the 0.4% and 0.6% ${\beta}$-glucosidase groups, showed a significantly increased average daily weight gain (p<0.05) over that of the control. All three ${\beta}$-glucosidase feed groups showed significantly higher feed conversion ratios than the control group (p<0.05). Feed supplementation of 0.2% ${\beta}$-glucosidase significantly raised the contents of serum isoflavone aglycones as shown by decreases of genistin and daizin (p<0.01) and an increase of daidzein (p<0.01). The 0.2% ${\beta}$-glucosidase feeding significantly increased the intestinal amylase activity while it had little effect on lipase and trypsin activities (p>0.05). 0.2% ${\beta}$-glucosidase feeding also significant elevated the levels of highdensity lipoprotein cholesterol and malate dehydrogenase while lowering the level of low-density lipoprotein cholesterol (LDL-C). Finally, ${\beta}$-glucosidase improved the anti-oxidative activities of the animals; the 0.2% ${\beta}$-glucosidase feed group had higher activities of superoxide dismutase (p<0.05), glutathione peroxidase and glutathione reductase in the liver (p<0.05), and malondialdehyde level in the serum (p<0.05).

• The Korean Journal of Food And Nutrition
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• v.26 no.2
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• pp.318-322
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• 2013

This study was designed to investigate changes in germination characteristics and color as well as the content of isoflavones of Eunhakong germinated under dark conditions. The wet weight of Enhakong was increased as germination progressed. It reached $299.7{\pm}15.0%$ at 60 h after the beginning of sprouting. The relative dry weight was consistently decreased as germination progressed, and it reached $65.8{\pm}8.2%$ at 60 h after the beginning of sprouting. The length of sprout was rapidly increased at the latter stage compared to the beginning of germination. Most soybean seeds were successfully germinated at 60 h after beginning of sprouting. The L value was considerably increased at the early stage of germination and it reached $63.4{\pm}0.7$ at 60 h. The a value was rapidly increased at the beginning of germination and decreased thereafter. The b value was increased at the beginning of germination and did not changed thereafter. It was confirmed that the total isoflavone content, in which the m-genistin was highest followed by daidzin, and than slightly decreased.