What is Jinzhou hairy clam? Authentic specialty of Dalian, Liaoning: Jinzhou hairy clams
Summary:Do you want to know what Jinzhou hairy clams are? This article is a detailed introduction to thespecialty of Dalian, Liaoning Province - Jinzhou hairy clams. It was compiled and edited by the editorial team of China Specialty Network after reviewing and collecting relevant information about Jinzhou hairy clams. The full text takes about 10 minutes to read, mainly including the basic introduction of Jinzhou hairy clams
Basic introduction of Jinzhou hairy clams
In recent years, the production area and product coverage of pollution-free aquatic products in Jinzhou New District have been continuously expanding, and the process of fishery standardization construction has been accelerating, laying a solid foundation for applying for geographical indications of agricultural products.
. The application for geographical indication of agricultural products for "Jinzhou hairy clams" will further standardize the scope of production, seedling production, breeding and processing, supervision and management, greatly enhance the quality characteristics and brand value, promote industrial development, and increase the income of fishermen. While improving the market awareness and reputation of "Jinzhou hairy clams", it is also conducive to cracking down on counterfeit products and speculators, protecting local specialty agricultural products, forming a unified management model of government supervision, industry supervision, and enterprise self-discipline, and achieving scientific and sustainable development of fishery production in Jinzhou New Area
The Jinzhou hairy clam, scientific name Scapharca subcrinata, commonly known as hairy clam, hairy clam, or corrugated clam, belongs to the phylum Mollusca, class Actinopterygii (also known as bivalves), order Clams, family Clams, and genus Clams. The shell of the hairy clam is oval in shape, with a firm and thick texture. The shell is about 54mm long and 46mm high. The two shells are extremely swollen, with a width of 3/4 to 4/5 of the height. The right shell is slightly smaller than the left shell, and the two ends on the back are slightly angular. The top of the shell is slightly forward, and the distance between the top of the two shells is moderate. There are 30-35 radiating ribs on the surface of the shell, with dense rib protrusions and small square nodules, which are more prominent on the left shell. The surface of the shell is covered with brownish fuzzy skin, which is why it is called a hairy clam. The outer skin is often worn and peeled off, resulting in a white surface on the shell. The inner surface of the shell is white or grayish yellow, and the edges have teeth and grooves corresponding to the radiating ribs on the shell surface. The hinge part is straight, with about 50 hinge teeth, and the middle is small and dense; Both sides are large and sparse. The scar on the anterior adductor muscle is slightly horseshoe shaped, while the scar on the posterior adductor muscle is oval shaped. The digestive organs are composed of the mouth, esophagus, stomach, intestines, and -. The main foods are diatoms and organic debris. The reproductive gland is surrounded by the digestive gland (visceral mass). During sexual maturity, the female gland is orange red and the male gland is yellow white. The genital opening is located on the ventral surface of the posterior adductor muscle, with one on each side. The hairy clams live in mud and sand bottoms within 20 meters of shallow seawater, with a higher concentration at depths of 2-10 meters; It is also commonly distributed in the intertidal zone. The burial depth is relatively shallow and generally deepens with individual growth, ranging from 3 to 10 centimeters. The suitable habitat for this species is an inner bay with an appropriate amount of fresh water inflow. The salinity is generally between 21-28.8 ‰, and the water temperature ranges from 0-32 ℃. It is a species with broad temperature and broad salinity. Distributed along the coasts of Japan, Korea, and China in the western Pacific Ocean. Jinzhou hairy clams are mainly distributed in the sea areas under the jurisdiction of Xingshu Street, Dengsha River Street, and Dalijia Street in the eastern Yellow Sea region of Jinzhou New District, Dalian City. They extend north to the mouth of Dasha River in the north of Xingshu Street and south to Chengshantou in Dalijia Street (see Attachment 1 for the distribution map of Jinzhou hairy clams production areas). The sea area is as follows: N 39°19′03.070″， E 122°15′39.481″ N 39°16′31.644″， E 122°20′40.266″ N 39°12′29.236″， E 122°14′17.646″ N 39°10′09.915″， E 122°14′19.149″ N 39°09′20.971″， E 122 ° 09 ′ 40.364 ″
Product quality characteristic features
1 Typical quality characteristic features of Jinzhou hairy clams 1.1 External sensory characteristics of Jinzhou fresh hairy clams: The shell is undamaged, the individual is fat, the adductor muscle is tightly closed, the outer foot color is bright red, and the chicken crown folds are obvious; The parent clams are over 3 years old, evenly distributed, and have a shell length specification of 4-5cm; The gonads are brightly colored, with females appearing orange red and males appearing milky white. The gonads are plump, covering the entire visceral mass and extending to the base of the feet. It has obvious delicious qualities of marine shellfish, with a fresh and delicious taste. The main external prominent features of Jinzhou hairy clams are: large individuals with brightly colored soft parts compared to other regional species. Other regional varieties turn yellow and white in color. 1.2. The internal quality indicators of Jinzhou hairy clams have been tested, and Jinzhou hairy clams contain 16 types of amino acids. Among them, glutamic acid, aspartic acid, glycine, and alanine are the four amino acids that contribute to taste, and their composition and content determine the freshness of the sample. Among them, glutamic acid and aspartic acid are characteristic amino acids with a fresh taste, while alanine and glycine are characteristic amino acids with a sweet taste. Serine and proline are also related to the sweet taste. The high content of these six taste amino acids in the sample gives Jinzhou clams a distinct and delicious quality as marine shellfish. The protein content is 8.5-16% and the fat content is 0.5-1.2%, making it one of the rare high protein and low-fat foods; The iron content is 3-7 mg/100g, which has the effect of promoting hemoglobin synthesis, promoting growth, and increasing appetite. 2. Quality and safety regulations for Jinzhou hairy clams: The quality and safety of Jinzhou hairy clams shall be controlled in accordance with relevant laws and regulations such as the Agricultural Product Quality and Safety Law of the People's Republic of China, the Liaoning Province Aquatic Product Quality and Safety Management Measures, and the Dalian City Agricultural Product Market Access Management Measures. Product: (1) Containing pathogenic parasites, microorganisms, and prohibited fishery inputs, or biotoxins that do not meet the quality and safety standards of aquatic products; （2） Chemical residues such as veterinary drugs used in fishing or toxic and harmful substances such as heavy metals that do not meet the quality and safety standards of aquatic products; （3） The preservatives, preservatives, and additives used in packaging, preservation, storage, and transportation do not comply with the relevant mandatory technical specifications of the state; （4） Those that do not meet the quality and safety standards after sampling and inspection; （5） Other products that do not meet the quality and safety standards of aquatic products Article 11: Agricultural products that have not obtained certification or recognition shall be subject to an on-site inspection system. After passing the on-site inspection by the market operator, they are allowed to enter the market for sale