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为了解水解牡蛎钙的生物利用率，作者以含钙量相等（４５ｍｇ／ｄ）的水解牡蛎钙、碳酸钙、氯化钙喂饲缺钙动物模型大鼠４周，采用原子吸收法和ＥＤＴＡ络合滴定法测定了大鼠的血钙、尿钙、粪钙和骨钙，骨密度仪测定骨密度。结果表明，水解牡蛎钙组大鼠的钙吸收率和存留率分别为６７．３％±１６．７％和６４．６％±１７．５％，股骨骨钙含量为１３１．２±１．４８ｍｇ／ｇ，股骨骨密度（ＢＭＣ／ＢＷ）为０．３１８±０．０３４ｇ／ｃｍ２，均显著高于碳酸钙对照组。三组大鼠的血钙含量、体重增重和摄食量差异无显著性。提示水解牡蛎钙比常用钙剂碳酸钙更有利于机体的吸收和利用。
In order to understand the bioavailability of oyster calcium hydrolysis, the authors fed calcium-hydrolyzed oyster calcium, calcium carbonate and calcium chloride rats with the same calcium content (45mg / d) for 4 weeks. Hemoglobin, urinary calcium, fecal calcium and bone calcium in rat were determined by co-titration, and bone mineral density was measured by bone mineral density. The results showed that the calcium absorption rate and retention rate of hydrolyzed oyster calcium group were 67.3% ± 16.7% and 64.6% ± 17.5% respectively, and the femoral calcium content was 131.2 ± 1.48mg / G, bone mineral density (BMC / BW) was 0.318 ± 0.034g / cm2, which were significantly higher than those of calcium carbonate control group. There was no significant difference in blood calcium, weight gain and food intake between the three groups. Tip hydrolysis of oyster calcium calcium carbonate is more conducive to the body’s absorption and utilization.