Our Efforts for the Protection of the Environment

Bait production respecting the natural cycle

The raw materials used in MARUKYU compound baits are 100% natural materials, including silk worm, bean curd lees, krill and flour, so be rest assured. The majority of the 100% natural ingredient fishing baits are eaten by fish when scattered in the sea. The remainder is eaten by smaller creatures such as shrimp, crabs, pond snails and red worms. After that, the remainder of the bait, along with organic matter including biological remains and excrement, decompose into inorganic nutrients such as nitrogen, phosphorus and potassium thanks to microorganisms and bacteria. These nutritive salts are ingested by phytoplankton and seaweed. In this way, MARUKYU fishing baits can enter the natural cycle smoothly.

Degradable bacteria and minerals
MARUKYU compound baits decompose quicker than raw bait. As we strived for a bait that could decompose quicker and enter the natural cycle even more smoothly, we came up with a degradable bacteria and mineral compound. MARUKYU degradable bacteria, which is chosen from high utility bacteria (useful bacteria), decomposes fishing baits smoothly. Minerals have the effect of preventing the growth of bad bacteria, and promoting the growth of useful bacteria. (See diagram 1) MARUKYU degradable bacteria was chosen from a range of useful bacteria. Here we will introduce a decomposition test of krill which was performed in our research facility and used as a method of choosing the best bacteria to use. We used krill as it is regularly used as fishing bait. The progress of decomposition in sea water was compared between krill, which had MARUKYU degradable bacteria added to it, and krill with nothing added to it. After 1 week, the shape of the krill with degradable bacteria had completely changed, whereas the regular krill kept its shape and hadn’t decomposed much at all. (See diagram 2). Through these experiments, we choose useful bacteria that can decompose fishing baits quicker and more safely.
Further progress
Of course this degradable bacteria and mineral compound is not the end point for environmentally friendly fishing bait. We continue to develop even environmentally friendlier fishing baits through cooperative research with universities, ocean surveys and various experiments.