Being aware that fresh green walnuts are highly perishable and their healthful fats easily damaged. The fleshy green outer layer called walnut husk can oxidize in a relatively short period after harvest, and when it perished, it will stain walnut underlying shell so as to damage the walnut outlook and reduce the shelling value. If you’re purchasing shelled walnuts in bulk, avoid those that appear shriveled or smell rancid, or that you cannot verify are fresh. Walnuts should be stored in an airtight container in your refrigerator or freezer, whether they are shelled or unshelled.
Also, there is another way to preserve walnut without causing damage on walnut shell outlook or its nutrient value. The SL-40 walnut drying machine invented and developed independently by Shuliy Machinery, adopting evenly heat radiation equipment and computer controlled system, can dry walnut sufficiently with its nutrients preserved.
Walnuts are too awesome for a handy snack. Although the outer membrane is a little bitter and astringent to taste, nutrients it contain are beyond our imagination. In the case, if you’re not a big fan of the walnut flavor, you can still get a variety of their therapeutic benefits just by means of sprinkling them onto cake as decoration or blending them in combination with coffee into smoothies.