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Cervus nippon yesoensis (Japanese Yeso Deer) 사슴육에서의 색소 및 색소 안정성
M. Sekikawa,K. H. Han,K. Shimada,M. Fukushima,T. Ishikawa,C. H. Lee,M. Mikami Korean Society for Food Science of Animal Resource 2003 한국축산식품학회지 Vol.23 No.4
Color and its stability in venison, longissumus dorsi (LD) and quadriceps femoris (QF) muscles, from 8 wild Cervus nippon yesoensis (Japanese Yeso Deer) were investigated by means of the CIE L$^{*}a{*}b{*}$ measurement and autoxidation rate recorded using partially purified myoglobin. It was observed a common feature of the change of three mean values($L^{*}$, $a^{*}$ and $b^{*}$) in both LD and QF that mean value increased at 1 or 2 day post-mortem and then decreased during storage. The differences between 1 and 7 days was the largest in $a^{*}$ value than those in $L^{*}$ and $b^{*}$ values. The mean differences among storage days were only significant in $a^{*}$ except for $b^{*}$ of LD. It was same tendency that the mean difference of CIE $L^{*}$, $a^{*}$ and $b^{*}$ values during refrigerator storage was larger in $a^{*}$ than both in $L^{*}$ and $b^{*}$ reported in beef(Sekikawa et al., 1995) and venison(Stevenson et al., 1989) during storage. The smaller $a^{*}$ value was indicated that bright red of meat changed to dull red, brown red causing met-Mb formation. To compare of color stability with respects to the Mb autoxidation rate, we measured this rate of deer and horse muscles, because horse Mb was considered to have the fastest autoxidation rate among domestic animals, and we used crude Mb and pH 6.0, which might be reflected to the intact meat. Mean value of the autoxidation rate measured in this study in deer was 0.037 and that was 0.026 in horse(sigma). Although there was no significant mean difference and were different Mb purity between deer(A409/A 280 nm = 4.0) and horse(5.6), in generally Mb purity was the higher and the faster autoxidation rate, but this rate in deer was faster than in horse. These results might indicate that venison meat discolors at faster rate compared with beef.
Lipid Metabolism in Rats Fed Acetaminophen with Coadministration of Adzuki Bean Extract
Kyu-Ho Han,Kiyoshi Ohba,Chi-Ho Lee,Ken-ichiro Shimada,Mitsuo Sekikawa,Michihiro Fukushima 한국식품과학회 2007 Food Science and Biotechnology Vol.16 No.4
The effect of water extract of adzuki beans on acetaminophen-altered lipid metabolism was examined in rats. Control group of rats was fed a basal diet, another group of rats was fed 0.5% acetaminophen (APAP group), and a third group of rats was fed 0.5% acetaminophen plus 5% adzuki bean extract (ABE group) for 4 weeks. Serum total and HDL cholesterol levels in the APAP group were significantly lower than those in the control and ABE groups. Hepatic cholesterol 7α- hydroxylase and fatty acid synthase mRNA levels in the APAP and ABE groups were significantly higher and lower than in the control group, respectively. Hepatic 3-hydroxy-3-methylglutaryl-coenzyme A reductase mRNA level in the APAP group was significantly lower than in the control group, whereas that in the ABE group was significantly higher than in the APAP group. These results indicate that adzuki bean extract may improve the acetaminophen-altered serum lipid metabolism in rats.
Effect of Colored Potato Flakes Against Acetaminophen-induced Liver Damage in Rats
Kiyoshi Ohba,Shoko Watanabe,Kyu-Ho Han,Naoto Hashimoto,Takahiro Noda,Ken-ichiro Shimada,Hisashi Tanaka,Mitsuo Sekikawa,Michihiro Fukushima 한국식품과학회 2007 Food Science and Biotechnology Vol.16 No.3
We examined the hepatoprotective effects of colored potato flakes on acetaminophen(AAP)-induced liver damage in rats. F344/DuCrj (8 week-old) rats were fed a cholesterol-free diet with 54,9486 g of α-corn starch/100 g diet and were orally treated with 25% colored flakes of Kitamurasaki (KM: light purple), Northern Ruby (NR: red), and Queen (SQ: medium purple) potatoes co-administered with AAP (0.5 g/100 g diet)for 4 weeks. The hepatic thiobarbituric acid-reactive substances (TBARS) values in the KM, NR, and SQ group were significantly lower (p<0.05) than those in the control groups with and wothout AAP. Furthermore, the hepatic catalase, Mn-superoxide dismutase (SOD), and Cu/Zn-SOD mRNA levels in the KM, NR, and SQ groups were higher than those in the control groups with and without AAP. The present findings suggest that colored potato flakes are useful as a prophylactic agent against oxidative liver damage.
Hepatoprotective Effects of Potato Peptide against D-Galactosamineinduced Liver Injury in Rats
Kiyoshi Ohba,Kyu-Ho Han,Ruvini Liyanage,Megumi Nirei,Naoto Hashimoto,Ken-ichiro Shimada,Mitsuo Sekikawa,Keiko Sasaki,Chi-Ho Lee,Michihiro Fukushima 한국식품과학회 2008 Food Science and Biotechnology Vol.17 No.6
The effect of some peptides on hepatoprotection and cecal fermentation against D-galactosamine (GalN)-treated rats was studied. In acute hepatic injury tests, serum alanine aminotransferase (ALT), aspartate aminotranferase (AST), and lactic dehydrogenase (LDH) activities were remarkably increased after injection of GalN. However, potato and soybean peptides significantly decreased GalN-induced alterations of serum ALT and AST activities. Hepatic thiobarbituric acidreactive substance (TBARS) concentration in GalN-treated groups fed potato and soybean peptides was significantly lower than that in GalN-treated control group. Hepatic glutathione level in the GalN-treated group fed potato peptide was significantly higher than that in GalN-treated control group. Furthermore, cecal Lactobacillus level in GalN-treated groups fed potato and soybean peptides was significantly higher than that in GalN-treated control group, and cecal short-chain fatty acid concentrations in GalN-treated group fed potato peptide were significantly higher than in GalN-treated control group. These results indicate that potato peptide may improve the cecal fermentation and prevent the GalN-induced liver damage in rats.
Ohba K.,Livera J.R.J.,Seneviratne R.W.,Serjmyadag D.,Shimada K.,Fukushima M.,Han Kyu-Ho,Lee Chi-Ho,Sekikawa M. Korean Society for Food Science of Animal Resource 2006 한국축산식품학회지 Vol.26 No.1
The aim of this study was to determine the best processing conditions for producing of dried lean pork as a ready-to-serve product without using large-scale machines. Lean pork sausage was produced using 1.27% sodium chloride, 0.075% sodium polyphosphate, 0.06% sodium ascorbate, 0.075% sodium pyrophosphate, 0.009% sodium nitrite, 0.009% dextrin, 0.11% sodium glutamate and 1.4% spice mixture. The most appropriate slice thickness for drying was examined by slicing the sausage at a 0.5, 1 and 2 cm thickness. The drying temperatures were determined by drying the sausage slices at 35, 48 and $68^{\circ}$. The total drying period was for 12 hr, In order to examine the ability of this process to sterilize the pork, the raw meat materials were inoculated with Escherichia coli (E. coli). The optimal conditions for producing lean pork sausages were a 2 cm slice thickness and drying temperature of $68^{\circ}C$ for 12 hr, The moisture content water activity, color, hardness and pH were measured in the dried product. The product had a moisture content of 47.5% and a water activity of 0.93. There was a 47.7% percentage reduction in moisture. The dried product tested negative for E. coli even though the raw meat materials been inoculated with E. coli.
Chi-Ho Lee,Kyu-Ho Han,You-Jin Jeon,Yasantha Athukorala,Kang-Duk Choi,Cheon-Jei Kim,Jin-Kook Cho,Mitsuo Sekikawa,Michiro Fukushima 한국식품영양과학회 2006 Journal of medicinal food Vol.9 No.3
A water extract of Artemisia capillarisThunberg (Compositae) was investigated for protective effects againstoxidative stress induced by 2,2.-azobis(2-amidinopropane) dihydrochloride (AAPH) in Sprague-Dawley male rats. Rats wereorally administered A. capillariswater extract (ACWE; 7.5 g/kg) for 7 days before AAPH treatment (60 mg/kg). AAPH in-toxication significantly elevated enzyme markers of liver injury (glutamic oxaloacetic transaminase and glutamic pyruvictransaminase). The pre-administration of ACWE significantly reduced the liver-damaging effects of AAPH as indicated bythe low levels of these enzymes. Moreover, the ACWE administration significantly attenuated the accumulation of thiobar-bituric acid-reactive substances in both plasma and liver tissues compared with those of rats administered AAPH alone. Fur-thermore, ACWE administration slightly improved the liver reduced glutathione levels and enhanced the production of an-tioxidant enzymes like catalase. A. capillariscontained 10.1 mg of catechin in 100 g of dried sample; the high-performanceliquid chromatography results showed catechin composition in the ACWE to be 28% (. )-epigallocatechin gallate, 49% (. )-epigallocatechin, and 23% other catechins. These observations clearly indicate that ACWE contains antioxidant catechins ca-pable of ameliorating the AAPH-induced hepatic injury by virtue of its antioxidant activity.