Abstract
The nonmetallic constituents of deep-sea fishes, Katsuwonus pelamis and Monocentris japonica were investigated.
Phosphorus, sulfur, chlorine and carbon containing in the ashes obtained by burning these fishes at 500-550°C were determined.
The milligram equivalents of these elements per 1 g of ashes are as follows: -
P: 19.4-8.46, C: 2.86-0.0, Cl: 2.31-0.14, S: 0.6-0.0
Phosphorus is the main constituent of the ashes, and amounts to 30-40% in weight as oxide.
In the case of Katsuwonus pelamis Phosphorus is most contained in white flesh and secondarily in gills and red flesh, while in Monocentris japonica most contained in head and secondarily in bones and flesh containing bones.
Chlorine is most found in the deep-sea fishes and in the heart of Katsuwonus pelamis
Sulfur is most found in the red flesh of Katsuwonus pelamis and the deep-sea fishes.
Carbon (CO3) is most contained in bones, cuticles and deep-sea fishes' bodies.
It is supposed that CO3 is generated from both the carbonates which originally construct the bone, head and other parts, and those which were secondarily made by burning these fishes' bodies.
