S. Widyastuti, D. Evawati
The purpose of this study was to investigate the proximate characteristics found of nano-calcium in shells of blood cockle (Anadara granosa liin) in four different areas, namely Kenjeran, Surabaya; Gresik Regency; Sedati District, Sidoarjo Regency; and Bluru District, Sidoarjo Regency. The parameters used were yields, proximate analysis and mineral content of calcium (Ca) and lead (Pb). The results showed that the nano-calcium in blood cockle shell from Kenjeran, Surabaya, had the lowest yield value of 0.2448 grams. The highest proximate result of ash content was found in the shell of the cockle from Bluru, as much as 53.46%. © Published under licence by IOP Publishing Ltd.
Department of Environmental Engineering, University of PGRI Adi Buana, Surabaya, Indonesia; Department Home Economics, University of PGRI Adi Buana, Surabaya, Indonesia
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