All issues
Volume 42 (1989)
- Issue 6 Pages 417-
- Issue 5 Pages 353-
- Issue 4 Pages 281-
- Issue 3 Pages 207-
- Issue 2 Pages 113-
- Issue 1 Pages 1-
Predecessor
Volume 42, Issue 5
Displaying 1-7 of 7 articles from this issue
- |<
- <
- 1
- >
- >|
-
Kimio SUGIYAMA1989 Volume 42 Issue 5 Pages 353-363
Published: October 10, 1989
Released on J-STAGE: February 22, 2010
JOURNAL FREE ACCESSDownload PDF (2701K) -
Jia-Zhen LI, Masao ABE, Tsuguyoshi SUZUKI1989 Volume 42 Issue 5 Pages 365-368
Published: October 10, 1989
Released on J-STAGE: February 22, 2010
JOURNAL FREE ACCESSBreast milk samples were collected from 27 healthy Japanese lactating women at about 1 week after delivery, and analysed for zinc (Zn) and selenium (Se) contents. The average Zn concentration (5.7±2.0μg/ml) was slightly higher than, and the average Se concentration (29.2±6.5ng/ml) was in good agreement with, the reported value. Using stepwise multiple regression analysis, the age of the mother and the sex of the infant for interindividual variation of milk Zn levels and the post-partum day of milk collection, the hospital of admission for delivery, and the sex of the infant for variation of milk Se levels were selected as possible contributory factors. The causes of the observed results and their implications for furthers studies were discussed.View full abstractDownload PDF (917K) -
Yoshiki KOBATAKE, Keiichi KURODA, Eiichi NISHIDE, Michio YAMAGUCHI1989 Volume 42 Issue 5 Pages 369-375
Published: October 10, 1989
Released on J-STAGE: February 22, 2010
JOURNAL FREE ACCESSIn order to investigate the effect of fatty acid patterns in phospholipid mixtures on the concentration of lipids in serum and liver of rats, hypercholesterolemic diets containing an egg yolk phospholipid mixture (EgPL) and/or a hydrogenated egg yolk phospholipid mixture (HEgPL) were administered for 2 weeks to male Sprague-Dawley rats. Serum and hepatic total cholesterol were suppressed not only in rats on the EgPL diet but also those on the HEgPL diet in comparison with the control group. Serum HDL-cholesterol was increased more in rats on the EgPL diet than in those on the HEgPL and control diets. Serum triglyceride, serum phospholipid and hepatic phospholipid were not different among the EgPL, HEgPL and control groups. The apparent fecal excretion ratio of cholesterol during the experimental period increased with both the EgPL and HEgPL diets. Fecal excretion of phosphatidylcholine in rats fed the HEgPL diet was markedly increased. These results indicate that both dietary EgPL and HEgPL significantly suppress the elevation of serum and hepatic cholesterol, although HEgPL is not as effective as EgPL, and that these dietary phospholipids increase the excretion of fecal cholesterol.View full abstractDownload PDF (1348K) -
Kiyokazu HAGIWARA, Akiko TSUDA, Tomio ICHIKAWA1989 Volume 42 Issue 5 Pages 377-383
Published: October 10, 1989
Released on J-STAGE: February 22, 2010
JOURNAL FREE ACCESSIn order to clarify the role of glutathione (GSH) in the prevention of lipid peroxidation, rats were fed on a vitamin E (VE) -deficient diet containing safflower oil for 6 weeks, followed by intraperitoneal injection of buthionine sulfoximine (BSO) (1mmol/kg body weight) once a day for 3 days. Then, the TBA value, VE content, GSH content, glutathione peroxidase (GSH-px) activity, glutathione reductase (GSSG-R) activity and glutathione S-transferase (GST) activity in various tissues of the rats were measured. Administration of BSO to both VE-replete and -deficient rats decreased the GSH content in all tissues examined. BSO administration to VE-deficient rats increased the TBA value in the liver, heart and testes, but decreased it in the kidney. Further investigation will be necessary to clarify the reason why the TBA value in the kidney of VE-deficient rats was decreased by BSO administration. The GSH-px activity in the liver, heart and kidney was decreased and the GST activity in these tissues increased by BSO administration to VE-deficient rats. The GSSG-R activity in the kidney of VE deficient rats was decreased by GSH depletion. GSH associated with GSH-px activity and GSSG-R activity may thus participate in protection against lipid peroxidation in rats in a VE-deficient state.View full abstractDownload PDF (1393K) -
Masako MATSUO, Yoshiko YUMOTO1989 Volume 42 Issue 5 Pages 385-389
Published: October 10, 1989
Released on J-STAGE: February 22, 2010
JOURNAL FREE ACCESSIn order to utilize “Okara Tempeh” (OT, okara, a by-product of the “tofu” industry, fermented by Rhizopus oligosporus), a high-fiber food, as a food additive for dietary fiber, biscuits containing 15% or 30% OT as a replacement for flour were prepared and their characteristics were compared with those of ordinary biscuits. Addition of 30% OT to the biscuits had no effect on their appearance or aroma, but caused insufficient swelling. Changes in texture such as decreased hardness and brittleness were detected rheolometrically, but difficult to detect by sensory testing. Addition of 30% OT to biscuits increased the content of dietary fiber 7-fold and suppressed the formation of lipid peroxide during storage at room temperature. These results indicate that OT is useful as an ingredient for making biscuits.View full abstractDownload PDF (910K) -
Kentaro KANEKO, Kiyoko OTA, Takeshi SUMINO, Yasuhiko MAEDA1989 Volume 42 Issue 5 Pages 391-395
Published: October 10, 1989
Released on J-STAGE: February 22, 2010
JOURNAL FREE ACCESSDifferences in binding properties between pectic substance and calcium (Ca) in salts or calcium hydroxide were investigated by comparison with the Ca content of pectic substance after treatment with solutions of the above compounds. The pectic substance used for the analysis was prepared in several ways as follows. Pectic substance solution containing 0.1M calcium chloride or 0.1M calcium gluconate or 0.1M calcium lactate or 0.01M calcium hydroxide solution at 0-2-fold equivalent weight of pectic substance, was allowed to stand for 30 min at room temperature, and then dialyzed for 20 days to eliminate the excess Ca compounds. The Ca content in each of the pectic substances solutions was then determined by atomic absorption spectrometry. It was found that addition of the Ca compounds to the pectic substance solution led to ion exchange involving the hydrogen ion of the carboxyl group of the pectic substance with Ca, producing on increase in the Ca content of the pectic substance in the order of calcium hydroxide>calcium lactate>calcium gluconate>calcium chloride.View full abstractDownload PDF (1064K) -
Shoko SHINODA, Tsutomu YOSHIDA1989 Volume 42 Issue 5 Pages 397-402
Published: October 10, 1989
Released on J-STAGE: February 22, 2010
JOURNAL FREE ACCESSThe effect of dietary sodium phytate on the solubility of P, Ca, Mg and Zn in a purified diet based on casein-corn starch was investigated under various pH conditions. Both phytate-free and phytatecontaining diets were homogenized with 12 kinds of buffer solution of pH 1-12 and centrifuged 10, 000 ×g for 30min to separate the soluble (supernatant) and insoluble (residue) fractions. The ratio of insoluble mineral was expressed as a percertage of the insoluble mineral content relative to the total (soluble+insoluble) mineral content. Higher ratios of insoluble P in the phytate-containing diet than in the phytate-free diet were obtained at all values of pH examined. In pH values over 5, increased ratios of insoluble Ca exceeding 85% of total Ca were observed in both diets. No obvious Ca-precipitating effect of dietary phytate was recognized. On the other hand, dietary phytate did affect both Mg and Zn solubility. An appreciable increase in the ratio of insoluble Mg in the phytate-containing diet compared with the phytate-free diet was shown as the pH increased from 6 to 12. At about pH 7, the ratio of insoluble Zn in the phytate-free and phytate-containing diets was 25 and 60%, respectively. These ratios were lower than those in the content of the lower part of the small intestine of rats which were fed the same diets as those used in this experiment.View full abstractDownload PDF (1258K)
- |<
- <
- 1
- >
- >|