Vitamin K1, also known as phylloquinone, is a fat-soluble vitamin found predominantly in green plants. It is extracted from green leafy vegetables such as spinach, kale and broccoli. This vitamin is crucial for photosynthesis in plants, acting as an electron transporter in photosystem I. Its production at the biotechnological level involves extraction and purification from natural plant sources, ensuring its purity and efficacy for cosmetic and medicinal use