Uncover the white spots in fishmeal

This post is finally edited by csf123 in 2009-11-13 19:11 in fishmeal with some small white flakes, sometimes very small and sometimes slightly larger 2-8mm can be seen in the sample. When looking in the mirror, you can't see these white dots if you are not careful. Generally, you will think from the big sample that these are bigger fish bones or teeth. The main components of fish bones and teeth are hydroxyapatite, with about 40% calcium and 19% phosphorus. After selection and identification, the substance has the following characteristics: adding hydrochloric acid to bubble, the calcium content is 39.5%, and the phosphorus content is negligible. In view of the following picture, the surface is smooth, there are no signs of shattering, and some small white spots are bonded by smaller stones, which are not transparent, neither minerals nor bones and teeth. It was mentioned last night that it might be the forehead stone of the yellow croaker. Today, the supplier found some live yellow croaker and knocked on the forehead to see that it was indeed a forehead stone. Each fish was made up of two such stones. The big fish were bigger and the small ones were smaller. The stones identified and found in fishmeal have the same properties. When you see this kind of stone, you can tell that the fishmeal is made up of some yellow croaker or other similar fish. the more fish you have, the more stones you have. What is the quality of this fishmeal? If you have any knowledge, please give me some advice. Attachments: you need to log in to download or view attachments. No account number? Registration-ichthyology known as otoliths, stone head fish family are very large, not only yellow croaker, but also other fish. Based on this, it is impossible to judge whether fish meal is good or not. For reference only. -- thanks to Mr. Huang for his advice. I didn't know how to inquire about this information before, but now I know that this is otolith, stone head fish family, so it's easy to handle it. I don't know if it exists in freshwater fish. if freshwater fish don't exist, it at least proves that the content of fishmeal and marine fish can. The quality of fishmeal of marine fish should be better than that of freshwater fish. There are 70 genera and 270species of Sciaenidae in the world, and there are 11 genera and 20 species in Taiwan: benthic, oviparous, carnivorous lateral flat and long, large head, scaly head, small mucus holes in cheeks and large otoliths. The stone head fish gets its name from this. the swim bladder is large and special and can make a sound. The maxilla is more or less covered by the anterior bone, and the lower jaw does not have tentacles. Sometimes there is a single short beard. The hypopharynx is not United. The palate is usually toothless. Pectoral fins or axillary scales. The migration of undergraduate fish to coastal estuarine areas to lay eggs is an important economic fish and the main object of marine fishery in our country. Pseudosciaena Crocea, Pseudosciaena Crocea and hairtail are the three major marine fish in China. The stone head fish family, which includes the well-known yellow croaker, white mouth, black mouth, mackerel and other high-quality fish, is the most important offshore economic fish in the coastal shed of the Chinese mainland. The stonehead fish is mostly flat and elongated on the side, the snout is round and obtuse, the dorsal fin is long, there is a deep engraving to open the hard spine and soft strip, the lateral line is obvious and extends to the back edge of the caudal fin, and there are often some holes in the snout and cheek. Because the otolith on the head of the family fish is very large, it is called "stone-headed fish". The shape of the otolith is also one of the bases for the classification of the genus and species. Stonehead fish mainly live in tropical and subtropical sand-muddy continental sheds, with small and inferior mouths, and feed on invertebrates in sand and mud. They have large molars on their pharynx that can crush shelled invertebrates; those with large and oblique cleft mouths swim fast and often chase small fish or other swimming crustaceans to survive. Most stonehead fish can make sounds using the swim bladder. The golden yellow croaker under the lower abdomen is a kind of yellow croaker that used to be common in Taiwan's fishing market, but is now extremely rare. The Pseudosciaenacrocea of Pseudosciaena Crocea is also known as "rhubarb" and "Daxiang". When coming out of the water, the body is golden, the tail stalk is more than three times the height, and there are 26 vertebrae with small scales. They form large groups in the reproductive season and can make a loud sound (relying on the contraction of the musculus musculi, oppressing the cymbal wall and causing the wall to resonate.) For close migration and spawning, the dried product of the swim bladder is a valuable food-fish belly, which is one of the most important economic fish in China. Small yellow croaker (P.polyctis) is also known as "yellow croaker" and "small fresh". The body is similar to Pseudosciaena Crocea, but its tail stalk is slightly thicker and shorter, its length is more than twice that of its height, and its spine push bones are generally 29, with large scales. It migrates to inshore to lay eggs and ask for bait every spring, and the swim bladder can make sound in the cluster. It is one of the important economic fishes in the Yellow Sea, Bohai Sea and East China Sea. Others such as Nibea albiflora, Collichthys niveatus, Johnius belengerii, Argyrosomus argentatus, Miichthys miiuy-- are the otolith in the skull of large yellow croaker or small yellow croaker of the family Coleopteridae. [collection] most of them are the by-products of the processing of fish fish. It is generally collected in the fishing season of stone head fish (yellow croaker) from May to June. During processing, the largest otolith in the skull is removed, washed and dried. [medicinal materials] are long ovate, with trigonous particles. The brain stone of Pseudosciaena Crocea is 1.5 cm long and 0.8 cm wide. The small yellow croaker is smaller, 1-1.2 cm long and 5-7 mm wide. It is wide in the middle, slightly round at one end and pointed at the other. All magnetic white. The articular surface is relatively flat, and obvious circular nodal marks can be seen on the surface; on the other side, there is an oblique concave groove near the tip and several transverse processes, and the slender texture, namely the growth line, can be seen below the raised side. The quality is hard and not easy to break. The breath is slight and the taste is a little astringent. It is better to be white, hard and free of impurities. It mainly produces Zhejiang. [processing] wash and dry, put in an iron spoon, cover a bowl, calcined on the fire until there is a popping sound, take out and cool. [sex taste] "Summary of Medicine": salty, flat. [functional indications] fossil, Tonglin, anti-inflammatory. Treatment of stone gonorrhea, adverse urination, otitis media, rhinitis, brain leakage. ① "Rihuazi Materia Medica": take the pillow burn in the brain as the end, drink and treat stone shower. ② "Kaibao Materia Medica": the main stone shower, grinding stone service, but also burned into ash service. ③ "Compendium": the end of research or burning research water suit, the main leaching, urination is impassable. Boiled juice service, detoxification of arsenic cream, wild bacteria poison. [usage and dosage] Internal administration: at the end of the study, 1: 3 yuan. External use: burning research powder. [selection] ① treats stone and all kinds of stone: fourteen stone heads, fish heads and stones, and Angelica sinensis is divided equally. The upper two flavors are rammed and sifted for powder, with two liters of water, boil one liter and take one liter. ("must be used for health preservation") ② treatment of urination is impassable: stone head, fish head, stone powder, water suit square inch, day three. ("Qian Jin Fang") ③ treatment of purulent ears: stone head fish fish, research, or burning research mixed with ears. ("Lianhu Jian Fang") ④ for rhinitis: fish brain stone (calcined) one coin, borneol one cent. At the end of the study, the nose was inhaled. ("Shandong Handbook of Chinese Herbal Medicine") ⑤ treats brain leakage for many years: stone head bone, fire research is very fine, every night before going to bed, take a money, wine mix down. ("Materia Medica Huiyan") reference materials: "Progress in Natural Science"-- thanks for learning-- I see. I really don't know how long it has been misunderstood. This is the free bone of a fish, and the size of this bone reflects the size of the fish-- so do freshwater fish. It's just small-- I've studied. Thank you-- after studying, we don't do microscopic examination in the laboratory-- is it good to use it in livestock feed?