I. Causes of Litchi's post-harvest perishability 1. With a strong respiration 2. The role of enzymes: contains polyphenol oxidase and peroxidase. 3. Effect of ethylene 4. Loss of moisture: Since the peel and pulp are not linked by the transport of tissue, the loss of moisture from the peel is not compensated. 5. Physiological and pathological reasons Physiological reasons: The environment is not suitable, causing physiological disorders. Pathological causes: caused by microbial infection before or after harvesting or mechanical injury. II. Litchi Storage and Transportation Technology 1. Harvesting and pre-harvest treatment: spraying 300-500ppm of aluminum, phosphorus and aluminum. 2. Pre-cooling (1) Put the fruit in the shade or in the temporary fruit shed; (2) Pre-cooling combined with anti-corrosion at the same time; 11000 ppm acetaminophen dipped in 1 to 2 minutes; 2500 to 1000 ppm thiram Mn-Zn soaked 2 to 5 Minutes; 3800ppm BPA + 1000ppm Tektronix 2 to 5 minutes; 4500ppm carbendazim + 1000ppm citric acid 3. Package: Dry and load 0.3 to 0.5mm plastic film bag. 4. Storage (1) Storage at room temperature: 1 Chemical treatment method: 2% sodium hypochlorite dipped in fruit for 3 minutes; 2 After thermochemical treatment: Prepare 500ppm benzene with hot water, T = 53°C+, -1°C, soaking for 2 minutes, Load 0.01-0.02mm thick bags and store for 10 days. (2) Low temperature storage: 1 Low temperature storage: T = 5 ~ 10 °C, R = 85 ~ 95%, storage for 30 days. 2 Quick-freeze storage: After three treatment methods, quick freeze. a. Chemical treatment: After fruit picking, soak fruit for 2 minutes with 10% citric acid + 2% sodium bisulfite, take out and let it dry, place it at -23°C, freeze it, remove it and pack it with a film bag, put it in -18. °C storage, storage for one year. b. Blanching treatment: Put the fruit in boiling water at 100°C for 7 minutes, then put it in 3～5°C ice water and put the fruit in 40~50 seconds. Take it out and put it in 5~10% citric acid. In the +2% salt solution, dip the fruit for 2 minutes, dry it, put it in a film bag, and finally freeze it at -23°C and transfer it to -18°C for one year. (3) Atmosphere storage: Self-regulating atmosphere: The fruit is put into a polyethylene film bag of 0.02 to 0.04 mm thick, then placed at 3 to 10°C and stored for 20 days.
Nursing Bed
The Nursing Bed is a Hospital Bed specially designed for patients with reduced mobility during Home Care. The main purpose of the Elderly Home Care Bed is to facilitate nursing staff and facilitate patient recovery.
Home nursing beds can be divided into two categories: manual nursing beds and electric nursing beds according to the operation mode.
Home manual nursing beds can be clearly divided into manual two-function nursing beds, manual three-function nursing beds, manual five-function nursing beds, and manual multi-function nursing beds according to the number of shaking hands.
Nursing Bed,Nursing Elderly Bed Care,Elderly Home Care Bed,Metal Home Care Bed
Haloxylon Ammodendron Medical Equipment Co., Ltd. , https://www.halowheelchair.com