Vegetable fresh-keeping tips don’t have to be thrown into the refrigerator again.

When I buy a bunch of vegetables from the local market, I often find myself worrying about how to store them properly. Especially during the Spring Festival, when fresh dishes are in high demand, improper storage can lead to spoilage within days. These issues are not only frustrating but also wasteful for many housewives. To help with this, I’ve gathered some useful tips on how to store vegetables, as well as some basic knowledge on cleaning and cooking them effectively. One of the most important things to remember is that vegetables contain a lot of vitamins, especially vitamin C and B2, which are sensitive to air and temperature. If stored incorrectly, these nutrients can be lost quickly. The outer layers of vegetables—like the leaves of cabbage or the skin of onions and garlic—act as a natural barrier, helping to protect the inner parts from oxidation. So, it’s best to leave those outer layers intact until you're ready to use the vegetable. Storing vegetables in the refrigerator is generally better than keeping them at room temperature, as lower temperatures slow down the process of decay and reduce nutrient loss. However, not all vegetables should be stored in the fridge. Some, like potatoes, need to be kept in a cool, dark place to prevent sprouting and the formation of harmful compounds like solanine. Onions and garlic, on the other hand, should be stored in a dry, well-ventilated area—not in plastic bags or the fridge, as they can easily rot or sprout. For specific vegetables: - **Winter melon** should be stored in a cool, ventilated place with its skin intact. When placed upright, it can last up to 4–5 months. - **Winter bamboo shoots and ginger** can be buried in wet sand and kept in a dark, well-ventilated area for 4–7 weeks. - **Potatoes** must be kept in the dark, away from light, to avoid green spots and the buildup of toxic substances. - **Garlic** can be stored in a plastic bag at room temperature, but check it weekly to remove any dried or moldy cloves. When it comes to cleaning vegetables, it's essential to remove pesticides safely. One effective method is soaking vegetables in weakly alkaline rice water for about 10 minutes before rinsing. This helps break down organophosphorus pesticides. For leafy greens like broccoli, cauliflower, and celery, blanching them in hot water before cooking can remove up to 90% of pesticide residues. Sunlight exposure is another natural way to reduce pesticide levels. Just 5 minutes of sunlight can decrease certain types of pesticide residue by up to 60%. So, if possible, let your vegetables sit in the sun for a while before using them. In terms of cooking, it's important to handle vegetables properly to preserve their nutrients. High heat and long cooking times can destroy vitamins like C and B1. It’s better to cook vegetables quickly and add a bit of vinegar to help retain their nutritional value. When making dumplings, for example, squeezing out the juice from vegetables can lead to significant vitamin loss. Instead, mix the vegetables with oil first, then add salt and seasoning to keep the moisture and nutrients intact. By following these simple steps, you can enjoy fresher, healthier vegetables while minimizing waste and preserving their nutritional value.

High Voltage Linear Power Supplies

HVLP series Linear High Voltage Power Supplies are High-voltage DC Power Supplies that achieve AC/DC conversion through power frequency transformers and transistor loop control. Compared with switching high voltage power supplies, linear high-voltage power supplies have higher stability, higher accuracy, and lower output ripple. And the most important, because of the use of the power frequency AC/DC conversion principle, the linear power supply has no high-frequency radiation interference, and it is especially suitable for use in places with restrictions on EMC and EMI.

The HVLP series Linear Power Supplies have a wide range of output specifications, the output power ranges from 1KW to 400KW, and the output voltage can reach up to 50KVDC, and accept customization.

The whole series linear power supply adopts industrial-grade metal chassis, pure copper AC/DC multi-insulation high-voltage transformer with varnish treatment, high-reliability multi-transistor filter loop, ensuring the power supplies can run for a long time at full load with high stability, high accuracy, and ultra-low ripple electronic characteristics, equipped with a complete protection circuit, which can better ensure the reliability of the linear power supply itself and the safety of the customer's load.
The output voltage and current can be adjusted by the 10-turn potentiometer with scale and lock on the front, equipped with 4 1/2-digit high-resolution LED meters for output value reading, and RS communication interface can also be added for remote control and monitoring of linear power supplies.

This series of linear high voltage power supplies are mainly used for gas discharge, high-voltage electronic tubes, and can also be applied for other electronic components burn-in test.
Because the output this power supply has HV, the output MUST be connected to the chassis for fixed grounding to ensure the personal safety of the user.

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Yangzhou IdealTek Electronics Co., Ltd. , https://www.idealtekpower.com