Development of quantitative immunochromatographic kit and visual screening immunoassay strip for cadmium.

Cadmium is a highly toxic heavy metal for humans. In 2006, the Codex Alimentarius Commission set the international standard value of Cd contained in polished rice at 0.4 mg kg(-1), thus requiring the monitoring of Cd in food.

Interlaboratory study of immunochromatography for the rapid determination of cadmium concentrations in cereals and soybeans.

Cadmium (Cd) is one of the most toxic heavy metals to humans. To prevent the distribution of Cd-contaminated food, a simple and quick on-site test for measuring Cd concentrations in agricultural products is needed. Recently, an immunochromatography kit developed for determining Cd in rice was reported to be useful for determining Cd in many other crops.

Immunochromatography for the rapid determination of cadmium concentrations in wheat grain and eggplant.

Background: A simple and quick on-site test for trace levels of cadmium (Cd) in food is needed because of the human toxicity of this heavy metal. We developed an immunochromatography kit which uses the antigen-antibody complex reaction between the Cd-ethylenediaminetetraacetic acid (Cd-EDTA) complex and an anti-Cd-EDTA antibody. We previously reported the successful use of this kit to determine Cd concentrations in brown rice with respect to the international standard: 0.

Biodegradation and bioabsorption innovation of the functionally graded bovine bone-originated apatite with blood permeability.

Bioabsorbable and functionally graded apatite (fg-HAp) ceramics were designed using bovine bone by the calcination and partial dissolution-precipitation methods. The fg-HAp ceramics that were developed had gradual distributions of the degree of crystallinity and the grain size of single-phase hydroxyapatite from the surface layer of the pore wall to the bulk structure region. Calcination at 1073 K gave a specific surface area of 30 m2 x g-1 and porosities of 60-80%.