Abstract
Fish paste product, “Hanpen,” is a traditional type of Japanese food made from minced fish as well as imitation crab and kamaboko, and a marshmallow‐like soft texture is characteristic of hanpen. Hanpen is known as a high‐protein and low‐fat food. However, there is a lack of evidence on its health benefits. The aim of this study was to investigate the effects of hanpen intake on organ weight and biomarker levels in Sprague‐Dawley rats with diets consisting of hanpen for 84 days as an initial study. Male, 6‐week‐old Sprague‐Dawley rats were divided into two groups: group I, fed normal diets, and group II, fed normal diets with 5% dried hanpen. Throughout the 84‐day treatment period, we checked body weight and food intake, and after 84 days, we performed organ weight and blood biochemical analyses. No significant differences were seen in body weight, food intake, organ weight, and most biochemical parameters between group I and group II. Interestingly, total cholesterol (T‐CHO) and high‐density lipoprotein cholesterol (HDL‐C) levels of group II were significantly higher than those of group I after administration for 84 days. Moreover, lactate dehydrogenase (LDH) level of group II was marked lower than that of group I, and other liver function parameters of group II tended to be lower than those of group I. As conclusion, “Hanpen,” a Japanese traditional food, could be effective as a functional food for human health management worldwide.
Highlights
IntroductionHanpen is a traditional type of fish paste product made from minced fish (surimi) in Japan like imitation crab and kamaboko (fish cake)
Hanpen is a traditional type of fish paste product made from minced fish in Japan like imitation crab and kamaboko
We demonstrated the effect of hanpen intake on organ weight and biomarker levels in Sprague-Dawley rats fed a diet comprising hanpen for 84 days for the first time
Summary
Hanpen is a traditional type of fish paste product made from minced fish (surimi) in Japan like imitation crab and kamaboko (fish cake). Arai, Kim, Chiba, and Matsumoto (2009) showed that fish oils containing EPA and DHA inhibited body weight gain and exhibited an anti-obesity effect in female KK mice. Mizushige et al (2010) investigated the effect of Alaska pollack protein (APP) intake with high-fat diet on rats for 4 weeks and reported that intake of APP decreased serum TG and inhibited visceral body fat accumulation in rats. There are no experimental data on the effect of fish paste product, hanpen (Figure 1) intake in rats for 3 months. We demonstrated the effect of hanpen intake on organ weight and biomarker levels in Sprague-Dawley rats fed a diet comprising hanpen for 84 days for the first time. Body weight and food intake were measured once a week for each rat. The experimental protocol was approved by the animal experiment ethics committee of the laboratory (approval no. 19,003)
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