- 著者
- Yuka Tojo Toshiaki Kamitani Naoki Takatani Toshiya Toda Toshio Suzuki Seiichiro Aoe
- 出版者
- Japanese Society for Food Science and Technology
- 雑誌
- Food Science and Technology Research (ISSN:13446606)
- 巻号頁・発行日
- pp.FSTR-D-22-00222, (Released:2023-05-17)
Alginate, a dietary fiber in kombu, exhibits anti-obesity effects. Heat processing alters the physical properties of dietary fiber in processed kombu. In this study, male C57BL/6J mice were fed a high-fat diet supplemented with processed kombu powder for 10 weeks to investigate the effect of heat-altered dietary fiber properties on the anti-obesity activity of kombu. Three types of heat processed kombu were evaluated: boiled kombu (100 °C), heated kombu A (121 °C), and heated kombu B (130 °C). Compared to the control group, body weight decreased significantly in the heated kombu A group and abdominal fat weight decreased in all kombu-fed groups (especially in the heated kombu A group). Total serum cholesterol concentrations were similar across all groups. Short chain fatty acid concentrations in the cecum increased significantly in the heated kombu groups. The results showed that optimum heat processing conditions may improve the physiological functions of kombu.
- 著者
- Madoka KOHNO Anayt ULLA Rina TANIGUCHI Akane OHISHI Kako HIRAYAMA Yuma TAKEMURA Shoichiro TAKAO Yuki KANAZAWA Yuki MATSUMOTO Masafumi HARADA Tomoya FUKAWA Hiro-omi KANAYAMA Takayuki UCHIDA Toshio SUZUKI Takeshi NIKAWA
- 出版者
- Center for Academic Publications Japan
- 雑誌
- Journal of Nutritional Science and Vitaminology (ISSN:03014800)
- 巻号頁・発行日
- vol.68, no.6, pp.521-526, 2022-12-31 (Released:2022-12-31)
- 参考文献数
- 21
Various dietary protein supplements are used by the elderly and bedridden to maintain their skeletal muscle mass and functions. High-quality proteins act as an anabolic driver and help to improve muscle strength and performance. Previously, we reported that soy protein significantly attenuates denervation-induced loss of muscle mass and myofiber cross sectional area in mice with inhibition of ubiquitination and degradation of IRS-1 in tibialis anterior muscle. It also increased muscle volume and strength in bedridden patients. In the present study, we investigated the effects of dietary soybean supplementation on muscle functions in taxi drivers lacking vigorous physical exercise. We conducted a case-control study on 25 healthy, male taxi drivers between the ages of 36 and 71 y performing minimal physical exercise. They were divided into two dietary groups: the soybean diet group (n=13) who ate daily meals (dinner) supplemented with 50 g of steamed soybean for 30 d and the control diet group (n=12) who received no soybean supplement. Next, we measured the muscle cross-sectional area (CSA) and muscle strength and function in both the groups before and after 30 d of soybean intake. The body weights of both diet groups did not differ significantly over time. However, after 30 d of soybean supplementation, the soybean-fed group developed significantly higher muscle CSA and grip strength compared to the control groups. In conclusion, dietary soybean supplementation improved muscle function in taxi drivers who lacked exercise.