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Volume 68 (2015)
- Issue 6 Pages 259-
- Issue 5 Pages 217-
- Issue 4 Pages 147-
- Issue 3 Pages 101-
- Issue 2 Pages 63-
- Issue 1 Pages 3-
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Volume 68, Issue 5
Displaying 1-3 of 3 articles from this issue
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Research Notes
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Mayu Haraikawa, Natsuko Sogabe, Rieko Tanabe, Masae Goseki-Sone2015 Volume 68 Issue 5 Pages 217-223
Published: 2015
Released on J-STAGE: October 19, 2015
JOURNAL FREE ACCESSAlkaline phosphatase (ALP) hydrolyzes a variety of monophosphate esters into inorganic acid and alcohol at a high optimum pH (pH 8-10) . Intestinal ALP activity is known to be increased by oil administration, but little is known about its physiological function. In the present study, we examined the effect of oral administration of vitamin K1 or K2 on alkaline phosphatase activity in rats. Male Sprague Dawley rats were orally administered 0.2 mL of a solution of PK (PK group) or MK-4 (MK group) . Just before (0 hours) and after (1.5, 3.0, or 4.5 h) oral administration, we obtained samples from the intestine, liver, and kidney. It was found that in the PK and MK groups, the levels of ALP activity in the duodenum and upper ileum were increased significantly after oral administration. However, there were no significant differences in ALP-specific activities in the liver or kidney after oral administration of vitamin K. These results suggest that oral administration of PK and MK-4 induces intestinal ALP activity.View full abstractDownload PDF (820K) -
Chika Orii2015 Volume 68 Issue 5 Pages 225-232
Published: 2015
Released on J-STAGE: October 19, 2015
JOURNAL FREE ACCESSYoung unripe persimmon fruit is a waste material and environmental burden. We studied whether fermentation using Aspergillus awamori and Lactococcus lactis subsp. Lactis would be effective for utilization of immature Diospyros kaki ‘Fuyu’ fruit. These microorganisms caused an increase of inhibitory activity against β-lipase. An aqueous fraction of material fermented with A. awamori showed the highest activity against β-lipase (IC50＝16 μg/mL) at day 7, whereas an aqueous fraction of material fermented with L. lactis showed the highest anti-β-lipase activity (IC50＝29 μg/mL) at day 14. Additionally, material fermented with both A. awamori and L. lactis showed increased activity against angiotensin converting enzyme. The fruit of ‘Fuyu’ contains sucrose and citrulline, and these compounds disappeared by day 7 of fermentation. The fermentation products of A. awamori differed from those of L. lactis; mannitol was identified from the former, but not from the latter. These results indicate that A. awamori and L. lactis produce different compounds that are involved in inhibitory activities. Therefore, fermentation of immature fruit of the persimmon variety ‘Fuyu’ using A. awamori and L. lactis increases its functionality, suggesting that such immature persimmon could be utilized as a new material for functional foods.View full abstractDownload PDF (1235K)
Research Data
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Keitaro Matsumoto, Taro Murakami, Kengo Ishihara, Koji Okamura, Yuri Y ...2015 Volume 68 Issue 5 Pages 233-241
Published: 2015
Released on J-STAGE: October 19, 2015
JOURNAL FREE ACCESSWe conducted a questionnaire survey among female university students studying health sciences regarding the utilization of dietary oil products approved as a Food for Specified Health Use (FOSHU) . Forty-seven percent of the responders (n＝1,223) had experience using such FOSHU oils, and 69% of them used the FOSHU because their families also used them. Individuals with a body mass index of 23 or greater are considered to be target persons for the use of FOSHU, and 49% of the users correctly understood the criteria for using them. However, only 13% of the users were actually target individuals, and less than 1% of them considered FOSHU to be efficacious. One of the main reasons for this low perception of FOSHU efficacy may be that many of the users are not target persons and that it is difficult to consistently consume the recommended amount of FOSHU in order to become aware of its efficacy, as dietary oils are typically used for cooking.View full abstractDownload PDF (769K)
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