He Long, Huang Kaiqi, Wang Xiaodan, Qin Jianguang, Li Erchao, Chen Liqiao
Laboratory of Aquaculture Nutrition and Environmental Health, School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China.
College of Science and Engineering, Flinders University, Adelaide, SA 5001, Australia.
Food Chem (Oxf). 2025 Aug 7;11:100284. doi: 10.1016/j.fochms.2025.100284. eCollection 2025 Dec.
Nutritional regulation is the key strategy for improving aquatic products quality. This research evaluated the impacts of soy isoflavones on gonadal development and muscle quality in male Chinese mitten crabs (). Crabs were fed diets containing soy isoflavones (0, 33.14, 71.36, or 373.26 mg/kg) for 12 weeks. Results revealed that soy isoflavones may regulate gonadal development through "eyestalk-accessory gonad-testis" endocrine axis. Moreover, they promoted protein deposition in muscles and enriched highly unsaturated fatty acids (HUFAs) and total polyunsaturated fatty acids (PUFAs). In addition, soy isoflavones increased the muscle fibers density while reducing diameter, and significantly increased the umami amino acids proportion and equivalent umami concentration (EUC). This research shows that soy isoflavones can effectively enhance the gonadal development, nutritional value, flavor characteristics, and health benefits of aquatic foods, with a recommended supplementation amount of 71.36 mg/kg in crab feed.
营养调控是提高水产品品质的关键策略。本研究评估了大豆异黄酮对雄性中华绒螯蟹性腺发育和肌肉品质的影响。将螃蟹投喂含大豆异黄酮（0、33.14、71.36或373.26毫克/千克）的饲料12周。结果表明，大豆异黄酮可能通过“眼柄-副性腺-睾丸”内分泌轴调节性腺发育。此外，它们促进了肌肉中的蛋白质沉积，并富集了高度不饱和脂肪酸（HUFA）和总多不饱和脂肪酸（PUFA）。此外，大豆异黄酮增加了肌肉纤维密度，同时减小了直径，并显著提高了鲜味氨基酸比例和等效鲜味浓度（EUC）。本研究表明，大豆异黄酮能有效促进水产食品的性腺发育、营养价值、风味特征和健康益处，蟹饲料中推荐添加量为71.36毫克/千克。
