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Kamakura, M., Maebuchi, M., Ozasa, S., Komori, M., Ogawa, T., Sakaki, T. and Moriya, T. (2005) Influence of royal Jelly on mouse hepatic gene expression and safety assessment with a DNA microarray. Journal of Nutritional Science and Vitaminology, 51, 148-155.

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• TITLE: The effects of 90-day feeding of D-psicose syrup in male wistar rats

  AUTHORS: Tatsuhiro Matsuo, Reika Ishii, Yoko Shirai

  KEYWORDS: D-Psicose; D-Psicose Syrup; 90-Day Feeding; Pathological Tests; Rat

  JOURNAL NAME: Open Journal of Preventive Medicine, Vol.1 No.2, August 22, 2011

  ABSTRACT: D-Psicose is a rare sugar present in small quantities in natural products. In a previous study, we showed that D-psicose suppresses increase in plasma glucose and reduces body fat accumulation in rats. Based on acute and chronic toxicity testing in rats, D-psicose is classified as an ordinary and safe substance. Recently, we developed a high D-psicose syrup (PS) made from high fructose corn syrup (HFCS) by the alkaline isomerization method. However, the safety of PS as a food additive has not been demonstrated. In this study, we investigated the effects of 90-day feeding of PS in male Wistar rats. The rats were fed diets containing 3% D-psicose (control) or 4.3% PS for 90 days. The body weight gain and intra-abdominal adipose tissue weight did not differ between the control and PS group. The weights of the tissues did not differ between the two dietary groups. In clinical chemistry and hematological analyses, no differences were found between the control and PS groups. No gross pathological findings were evident at dietary doses of 4.3% PS. Therefore, the present study found no adverse effects of PS in rats fed a diet containing 4.3% PS for 90 days.