Olive oil is one of the few food products where the packaging decision can move a lot out of its legal grade. The chemistry that defines extra virgin — peroxide value, K232, K270 — measures oxidation, and oxidation is driven by three things the bulk format controls directly: contact with air, exposure to light and temperature. A buyer who chooses a format on price per litre alone is choosing, without knowing it, how much of the oil's remaining life to spend in transit.
Oxidation is a process, not an event
The analysis attached to a bulk lot describes the oil at the moment a sample was drawn. Between that moment and the buyer's tank or bottling line, the oil continues to age. Peroxide value climbs with oxygen contact. The ultraviolet readings climb behind it. Heat speeds all of it up; light speeds it further.
None of this is dramatic on any single day. Over a shipping transit and a period in a warehouse it is enough to matter, and the oils most at risk are precisely the ones bought close to a limit — an extra virgin with a peroxide value already in the mid-teens has less margin than one at the low end, and the format decides whether that margin survives the journey.
The tanker and the flexitank
For volume, a single large mass of oil has a structural advantage. The surface exposed to any headspace is small relative to the quantity, and a large volume warms and cools slowly, which smooths out temperature swings on the route.
The trade-offs are practical rather than chemical. One tank is one lot: one analysis represents everything, one contamination event affects everything, and the question of what the tank carried before and how it was cleaned is a serious one rather than a formality. For a buyer receiving into their own bulk storage, that concentration of risk is usually acceptable and the economics are hard to beat. For a buyer who needs to keep lots separate — different grades, different origins, different customers — it is the wrong format.
The IBC
An IBC keeps lots separate, traces individually and fits a forklift, which is why it dominates the mid-volume trade. It also carries the two risks that cause the most avoidable damage.
The first is headspace. A partially filled IBC has air above the oil, and that air is oxygen. Filling to capacity, or displacing the headspace with an inert gas, is the single most effective thing a supplier can do for oil in this format, and it is worth specifying rather than assuming. The second is light. Many IBC inner bottles are translucent, and an IBC that spends a day on a loading dock in sunlight has been exposed in a way a tin never is. An opaque outer or a wrap solves it, and again it has to be asked for.
The tin
A tin is opaque, sealed and portable. It protects oil well and it allows a buyer to open one unit at a time while the others stay untouched — which is why it suits distributors, HoReCa users and anyone buying a quantity but drawing it down over weeks or months.
Its cost per litre is higher than a tanker or an IBC. That is the price of not having a single opened container slowly degrading while it is used up. For some buyers that trade is obviously worth it; for a buyer bottling the whole lot on arrival it is money spent on protection they will not need.
Handling is part of the specification
Whatever the format, EU law makes the point for you: Article 7 of Regulation (EU) 2022/2104 requires the label of extra virgin, virgin, olive oil and olive-pomace oil to state that the oil should be stored away from light and heat. A bulk buyer's warehouse is bound by the same physics whether or not there is a label on the container.
The practical brief covers the format, the fill level and headspace treatment, protection from light, the temperature range the oil should be kept within, and the analysis at loading so that any change on arrival can be seen for what it is. TeraVella works in olive oil as a sourcing partner rather than a producer — we do not claim to own a grove, a mill or a bottling line. We verify a producer against your brief, put format and handling conditions in writing, collect batch analyses and manage documented shipment. Tanker, IBC or tin, or bottling and labelling under your own brand, is settled at the start according to your volume and how you draw it down. We hold ISO 9001, ISO 22000 and ISO 27001 and make no organic or other certification claim. Volumes and prices are confirmed at quotation.
