Pink grapefruit for juice and beverages: yield and taste

Pink grapefruit juice has a clear audience: people looking for a less sweet drink with a bitter edge and a natural colour. For a beverage company, choosing pink grapefruit for juice means working on two variables that affect each other: extraction yield and the taste of the finished product. And squeezing harder does not always mean squeezing better.

Pink grapefruit for juice: what yield depends on

• Ripeness: fruit harvested at the right time holds more juice and a better-balanced sugar-to-acid ratio (see our guide to Brix and acidity of Calabrian citrus).
• Peel and albedo: grapefruit has a fairly thick peel, and more peel means less flesh per kilo of fruit.
• Extraction pressure: harder pressing increases volume but carries more peel oil and more bitter compounds from membranes and albedo into the juice.
• Handling frozen fruit: the juice released on thawing is part of the yield and should be collected, not discarded.

Real yields depend on your plant and recipe: that is why they are measured with a processing trial on the first batch, not estimated on paper.

Taste: bitterness, essential oils and colour

Grapefruit flavour comes from the balance of sugars, acidity and bitterness. The main bitter compound is naringin, concentrated in the albedo and membranes, so the way the juice is extracted matters as much as the fruit. Peel essential oils also need keeping in check: in small amounts they add aroma, in excess they make the juice harsh. The pink colour comes from lycopene, a pigment that in juice stays bound to the suspended pulp particles: a cloudy juice keeps its colour, while heavy filtration and clarification fade it.

Juice, nectar or soft drink: what changes

In the EU, the names fruit juice, fruit juice from concentrate and fruit nectar are governed by Directive 2001/112/EC and its amendments. Sugars may not be added to fruit juices, so the taste depends entirely on the fruit and its ripeness. In nectars and juice-based drinks, by contrast, water and sugars help balance the bitterness. Pink grapefruit also works well in blends with orange, lemon or red berries and in sparkling drinks, where bitterness and acidity pair well with carbonation. For orange, the same topic is covered in our article on frozen orange quarters for juices.

Frozen quarters or in SO₂

Our pink grapefruit is processed into quarters, frozen at −18 °C or in SO₂; other cuts can be assessed on request. For juices and beverages the reference format is frozen: the fruit, frozen after harvest, can be processed at any time of year, in identified batches. The SO₂ quarter must be desulphited before use and is intended mainly for other supply chains, such as candying and pastry. To manage stock and withdrawals, also consider the difference between loose and block freezing.

What to specify in your request for quotation

• end use: 100% juice, nectar, sparkling drink or blend;
• raw material parameters to be stated in the data sheet: Brix, acidity, tolerances for seeds and defects;
• characteristics of the quarter (peel, size) in relation to your extraction equipment;
• packaging, annual volumes and collection schedule.

Frequently asked questions

Can juice made from frozen fruit be called fruit juice?

Yes: Directive 2001/112/EC allows fruit juice to be made from fruit preserved by chilling or freezing as well as from fresh fruit. Heat treatment and labelling remain to be checked with your quality department.

How much juice do you get from a kilo of quarters?

It depends on ripeness, the characteristics of the quarter and your equipment. We do not quote theoretical yields: batch parameters are in the data sheet and the real yield is measured on your line.

Is pink grapefruit suitable for sparkling soft drinks?

Yes, it is a classic flavour in citrus soft drinks. In this case the juice is one component of the recipe, and the raw material specification should be calibrated to the planned juice content.