• Korean Journal of Food Science and Technology
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• v.48 no.4
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• pp.317-322
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• 2016

A pesticide mix solution containing difenoconazole, lambda-cyhalothrin, and lufenuron was applied 3 times on field grown chili pepper at a fivefold overdose dilution concentration of the spray solution at a pre-harvest interval of 7 day. Difenoconazole, lambda-cyhalothrin, and lufenuron were detected at 4.43, 0.334, and 1.56 mg/kg, respectively, in raw chili pepper. Washing with water reduced the residue levels to 91.4, 94.3, and 85.3%, respectively. In dried chili pepper, the residues of difenoconazole, lambda-cyhalothrin, and lufenuron were 22.2 mg/kg (processing factor, Pf =5.01), 1.65 mg/kg (Pf =4.94), and 6.54 mg/kg (Pf =4.19). In the seeds, difenoconazole and lambda-cyhalothrin were not detected, and lufenuron was detected at 0.0075 mg/kg (n=1) and <0.005 mg/kg (n=2). Thus the pesticide residues in the seeds was negligible. In the seed oil, difenoconazole and lufenuron residues were 0.0263 and 0.0295 mg/kg, respectively (concentration factors=5.26 and 4.72). These concentration factors supported the theoretical concentration factor of 6.8, assuming that all of compound present in the seed are transferred into the oil.

• Journal of the Korean Society of Food Science and Nutrition
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• v.19 no.2
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• pp.127-132
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• 1990

This research was performed to observe the effect on aggregation of rat platelet treated with ginkgo and perilla oil which contain much linolenic acid. The numbers of platelet treated with ginkgo and perilla oil were $2.7{\times}10^{8}/m{\ell}\;and\;4.7{\times}10^{8}/m{\ell}$, respectively. These numbers were much less than control group(this group was $7.5{\times}10^{8}/m{\ell}$). The ability of platelet aggregation treated with Perilla oil and ginkgo oil was 1.4 folds less than control group. Concentrations of total cholesterol and free fatty acid in serum of rat treated with ginkgo and perilla oil group were almost equal to those of control group. group.

• Journal of Ginseng Research
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• v.19 no.3
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• pp.206-211
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• 1995

This study was investigated to find the effects of petroleum ether extract (Lipophilic fraction) from Korean red ginseng on platelet aggregation and thrombin time of the plasma in two groups of the experimental rats. One group of rats were fed with 15% corn oil (15%kg-diet) containing a number of 18 : 2 (linoleic acid) or 15% beef-tallow (15%/kg-diet) containing saturated fatty acids for 3 weeks, and were followed by feeding the petroleum ether extract (25 mg/kg-diet) for 3 weeks. The other group of rats (control group) were fed with 15% corn oil or 15% beef-tallow for 6 weeks. The platelet aggregation induced by thrombin and collagen was significantly inhibited and the thrombin time was prolonged in the 15% corn oil plus petroleum ether extract administrated group than in the 15% corn oil administrated group. And the same results were shown in the 15% beef-tallow plus petroleum ether extract administrated group. These results suggest that the petroleum ether extract from Korean red ginseng may have the beneficial effects on the inhibition of the platelet aggregation and the inhibition of blood coagulation induced by dietary fats.

• Journal of Applied Biological Chemistry
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• v.65 no.4
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• pp.337-341
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• 2022

In this study, the effect of the combined use of a lipid-soluble n-hexane extract of red ginseng marc (HERGM) and water-soluble arginine, which exhibits anticaries activity, on the growth of Streptococccus mutans was investigated. As a result of checkerboard assay, HERGM and arginine showed a synergistic effect in inhibiting the growth of S. mutans with a fractional inhibitory concentration index of 0.396. Combination treatments of HERGM and arginine resulted in leakage of nucleic acid components and decrease in the viable cell counts of S. mutans, all of which were proportional to the concentration of HERGM. In conclusion, the synergistic effect of HERGM and arginine on the growth inhibition of S. mutans is mainly attributed to HERGM.

• Korean Journal of Food Science and Technology
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• v.32 no.4
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• pp.908-913
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• 2000

To enhance the utilization of apple pomace for the functional food resources, we analyzed the useful components and examined the antioxidant activity of apple pomace. The contents of total dietary fiber, total flavonoid, total phenolic acid and vitamine C were 55.56%, 458 mg%, 1048 mg% and 19.8 mg%, respectively. Protocatechuic acid, cinamic acid, caffeic acid, ferulic acid, syringic acid, vanillic acid and phydroxybenzoic acid were identified in the apple pomace extract by GC-MS. Phloridzin and quercetin-3-glucoside were identified in the apple pomace extract by HPLC. Ethyl acetate fraction showed the highest antioxidative ability by ferric thiocyanate method. Malondialdehyde(MDA) formation in normal rat liver tissue also showed the lowest in ethyl acetate fraction.

• Food Science of Animal Resources
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• v.27 no.3
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• pp.262-266
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• 2007

This study was carried out to compare the taste and nutrient characteristics of Hanwoo chilled sirloin and rump with Australian beef sirloin and rump. Vitamin A, vitamin E and cholesterol were highest in Hanwoo among the three breeds (p<0.05). With regard to hexane composition, the percentage of inosine monophosphate (IMP) was the highest in Hanwoo. In addition, the sensory scores were also highest from Hanwoo. These results indicated from Hanwoo had the most acceptable quality among the five breeds tested (vitamin A, vitamin E, cholesterol, hexane, and sensory test).

• Applied Biological Chemistry
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• v.46 no.3
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• pp.214-219
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• 2003

The fractions extracted with methylene chloride from colored rice seeds of 19 cultivars were prepared to examine the correlationties of both antimutagenicity and antioxidiativity with physiological functionalities. The data revealed a positive correlation of the antimutagenicity with the content of $(3.{\beta},22Z)-Acetate-stigmasta-5,22-dien-3-ol$, 24-Oxocholesterol acetate, 6(E),8(E)-Heptadiene, and Eicosane. For antioxidativity, electron donating ability to DPPH radicals exhibited a positive correlation with the content of (24R,25S)-Aplysterylacetate, however, negative correlations were found between scavenging activity toward hydroxyl radicals and the content of either Tetradecanoic acid or Methyl ester-hexadecanoic acid, $(3.{\beta},24S)-Stigmast-5-en-3-ol$, respectively. In addition, a positive correlation was detected between the inhibitory effect of the fractions and the content of $(3.{\beta},24S)-Stigmast-5-en-3-ol$, however, a negative correlation with the content of 3',3'-Dimethylspiro [acridane-9,1'-indane], $(3.{\beta})-24-Methylene-9,19-cyclolanostan-3-ol$, and some other compounds was observed, respectively.

• Journal of Ginseng Research
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• v.28 no.3
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• pp.127-131
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• 2004

This study was carried out to investigate the effect of red ginseng water extract (RGWE) on trypsin activity. After extraction of fat soluble and saponin component from red ginseng powder by methyl alcohol, the residue was extracted with distilled water, and manufactured to water extract. The extract was dialyzed with different molecular cut off membrane. Trypsin activity demonstrated the highest level at the RGWE concentration of 9${\times}$10$\^$-2/% in reaction mixture, and also increased to 15% at 2.9${\times}$10$\^$-3/%. Km value was decreased and Vmax was increased in the present of red ginseng water extract. Red ginseng water extract was partially purified by dialysis, Bio-Gel P-I0 and DEAE-cellulose column chromatography. The active fraction demonstrated positive reaction to ninhydrin, DNS and folin reaction.

• Korean Journal of Food Science and Technology
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• v.50 no.1
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• pp.8-13
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• 2018

The textural and antioxidant properties, as well as the changes in functional constituents of shiitake mushrooms cooked by three different methods (boiling, steaming, and frying) were analyzed. The hardness of the mushrooms did not change significantly at the end time of cooking for each method. The antioxidant properties determined by measuring the free-radical scavenging activity and total phenolic content were the highest in the control (uncooked shiitake), and these properties were adversely affected after cooking, especially by boiling. Both the riboflavin and eritadenine contents were the highest in the control, but decreased upon cooking, in the following order: frying > steaming > boiling. The ergocalciferol content after frying was less than that in other samples. Although uncooked shiitake mushroom showed a higher concentration of functional constituents, it needs to be cooked adequately owing to its tough texture. If the hardness of the mushrooms cooked by different methods is the same, frying is considered the most acceptable method.

• Microbiology and Biotechnology Letters
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• v.41 no.4
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• pp.416-424
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• 2013

In the course of a study for the development of functional foods utilizing Woosul (Achyranthis radix), the components and various biological activities of Korean Woosul (AJN: Achyranthes japonica Nakai) and Chinese Woosul (ABB: Achyranthes bidentata Blume) were compared. Woosul in Korea, including AJN and ABB, are regulated and part of the Korean Pharmacopoeia. From AJN and ABB, ethanol extracts and their subsequent organic solvent fractions were prepared and their in-vitro antimicrobial, antioxidant and anti-diabetes activities were evaluated. Although AJN and ABB have no clear distinction in terms of usage in Korea, our results suggest that AJN has higher quantities of lipid-soluble components and lower amounts of water-soluble sugars than does ABB. ABB also appears to possess greater amounts of flavonoid and polyphenol substances than AJN. Analyses of biological activities showed that the fractions of AJN were more active as antibacterial agents, and possessed more pronounced ${\alpha}$-glucosidase inhibitory activities than those of the ABB fractions. However, the antioxidant activities of the ABB fractions, as determined by DPPH anion-, ABTS cation-, nitrite-scavenging activity and reducing power, were higher than those of the AJN fractions. Our results suggest that the components and bioactivity of the extracts and subsequent fractions of AJN and ABB are different. Therefore, usage of either AJN or ABB should be carefully considered, as regards their individual properties, when the active fractions of Woosul are employed in the development of functional foods or novel plant-derived medicines.