Plastic Squeeze Bottles For Olive Oil Raise Food Safety Concerns

Storing olive oil in plastic squeeze bottles is generally not recommended by food safety experts due to potential risks of chemical leaching and degradation of the oil's quality. Dr. Donald Schaffner, a distinguished professor of food science at Rutgers University, has extensively researched food safety practices and advises consumers to opt for glass or stainless steel containers for olive oil storage. The primary concern with plastic is the potential migration of chemical compounds from the plastic into the oil, especially when exposed to heat or light. While many food-grade plastics are designed to be safe, prolonged contact or specific conditions can lead to the leaching of substances like phthalates or bisphenol A (BPA), which have been linked to various health concerns.

Furthermore, olive oil is sensitive to light, heat, and oxygen, all of which can accelerate its oxidation and lead to rancidity. Plastic bottles, particularly clear or semi-transparent ones, offer less protection against light compared to dark glass or opaque stainless steel. Heat can also increase the rate at which chemicals leach from the plastic and can degrade the oil's flavor and nutritional profile. The "squeeze" mechanism itself can also introduce air into the bottle with each use, further exposing the oil to oxidation. Schaffner emphasizes that the best practice for preserving the quality and safety of olive oil involves storing it in a cool, dark place in an airtight container made of inert materials like glass or stainless steel.

When selecting olive oil, consumers should look for bottles that are made of dark glass (green or brown) or tin, as these materials offer superior protection against light. The oil should ideally be stored in a pantry or cupboard away from direct sunlight and heat sources, such as stoves or ovens. Refrigeration is another option for long-term storage, though it can cause the oil to solidify and may slightly alter its texture upon returning to room temperature. However, refrigeration provides excellent protection against oxidation and degradation. The advice from food safety professionals consistently points towards minimizing exposure to factors that compromise olive oil's integrity, making traditional glass bottles a more reliable choice for maintaining both its taste and its health benefits.