To prevent the development of moulds, sulfur bentonite is commonly spread over grape bunches, resulting in a white, powdery blanket. This powder absorbs water vapor from the surface of the
berry, facilitating water loss, but, at the same time, when absorbent capacity is exhausted, it creates a barrier to prevent the water vapor from escaping (Mencarelli & Bellincontro, 2013). Aside from this, the sulfur residues remaining on the berries are released into wine, increasing the risks it poses to human health. High-concentration exposure to sulfur can induce asthma, while a low concentration, together with other air contaminants, can provoke cardiovascular disease Vally, Misso, & Madan, 2009).