The spelling of the word "des Arginine Ca" may appear confusing at first glance. However, using the International Phonetic Alphabet (IPA) can help explain its pronunciation. "Des" is pronounced as "dez" (dɛz), "Arginine" as "ahr-ji-neen" (ɑrɡənin), and "Ca" as "kay" (keɪ). Therefore, the entire word is pronounced as "dez ahr-ji-neen kay" (dɛz ɑrɡənin keɪ). "Des Arginine Ca" refers to the removal of the amino acid arginine from the protein known as casein, which is commonly found in dairy products.