Sucrose fatty acid ester is a safe, non-toxic, and odorless food preservative that has gained popularity in recent years. When applied to fresh eggs, it forms a thin, protective film on the shell surface, which helps reduce water loss and slow down the respiration process, thereby extending the shelf life of the eggs. The treatment method involves placing fresh eggs in a basket and then immersing the basket into a 1% solution of sucrose fatty acid ester for just two seconds. After removal, the eggs are allowed to air dry before being stored in an open warehouse without the need for frequent turning. Proper ventilation is essential to maintain freshness.
At room temperatures below 25°C, this method can preserve the eggs for up to six months. Even at temperatures above 30°C, the eggs can remain fresh for a longer period than usual. In addition to this technique, various other methods have been developed, such as nitrogen flushing, carbon dioxide gas treatment, and others. Different regions have also created unique preservation techniques based on local conditions and resources.
Despite the variety of methods, they can generally be categorized into four main types: coating film, soaking, modified atmosphere (steamed smoke), and refrigeration. No matter which method is used or what preservatives are applied, all must adhere to six fundamental principles:
1. Effectively kill microorganisms on the eggshell or inhibit their growth within the egg.
2. Prevent external microorganisms from entering the egg.
3. Ensure the substance is harmless to human health, with no toxic effects or side effects.
4. Avoid environmental pollution and social harm.
5. Maintain the physical and chemical properties of the yolk and egg white, preserving the nutritional value and quality of the egg.
6. Be cost-effective, with easily available materials and excellent preservation results.
These principles ensure that the preserved eggs remain safe, nutritious, and comparable to freshly laid eggs.
Disposable Piercing Guide - WPTC12
Disposable surgical instruments are single-use medical devices that are used during surgery and discarded after use. Some examples of disposable surgical instruments include:
1. Scalpel 2. Tweezers 3. Scissors 4. Needle 5. Suture material 6. Surgical drapes 7. Surgical masks 8. Surgical gloves 9. Ironing pen 10. Trocar and cannula.
Medical tools for surgery:
1. Scalpel: A surgical knife used for making incisions in the patient's skin or tissues.
2. Forceps: A tool used for grasping and holding tissues or organs during surgery.
3. Retractors: Surgical instruments used to hold open incisions or wounds to provide better visibility for the surgeon.
4. Scissors: Used for cutting tissues and sutures during surgery.
5. Hemostats: Used to clamp blood vessels and prevent bleeding during surgery.
6. Suction devices: Used to remove fluids or debris from the surgical site.
7. Needles: Used to suture or stitch wounds.
8. Electrocautery: A tool that uses an electrical current to cut or coagulate tissues during surgery.
9. Endoscopes: Used for minimally invasive surgeries, these instruments allow the surgeon to see inside the body without making large incisions.
10. Laparoscopic instruments: Used for minimally invasive surgeries, these instruments include a camera and specialized tools for performing surgery through small incisions.
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Changzhou Weipu Medical Devices Co., Ltd. , https://www.cnweipumedical.com