What Is Sea Buckthorn Powder? Seabuckthorn fruit powder is sweet and sour, rich in protein, contained in its more than 20 kinds of amino acids, Incluindo 8 kinds of essential amino acids. Vitamin C content of 3 times the Chinese kiwi, hawthorn 20 times, 100 times the apple. The amount of vitamin E is 30 times that of soybean oil. …