Ask the Collective
The questions independent drinks founders ask most — answered. Distilled from years of community knowledge so the good stuff never disappears in the feed again.
How do pasteurisation parameters affect the colour stability of natural fruit juice concentrates in RTD beverages, particularly red and pink tones?
Pasteurisation itself at standard parameters (e.g. 70°C for 15 minutes via tunnel) should not change product colour. However, natural red pigments—particularly anthocyanins from strawberry and blackberry juice concentrates—can degrade under high heat or oxidation, potentially browning over time. Members have found several practical solutions: (1) Reduce pasteurisation temperature slightly and compensate with longer hold time to maintain the same pasteurisation unit; (2) Add ascorbic acid at 0.2g/L as an antioxidant to prevent oxidative browning; (3) Lower pH slightly, which stabilises anthocyanins; (4) Switch to more heat-stable natural colours—members recommend black carrot extract as the top option for pink-red tones, or EXBerry/GNT as premium suppliers of stable natural colours. Since your product is canned (not glass), light strike is not a concern. The ultimate factory validation method is heating the product in a dishwasher to test pasteurisation effect on colour stability.
What preservatives, pasteurisation methods and shelf-life standards do non-alcoholic RTD beverages require?
Non-alcoholic RTD beverages typically require specific preservation techniques to achieve extended shelf life. Members report achieving 3-year unopened shelf life with 12-month open ambient life on their products. **Preservation methods:** - **Hot pack pasteurisation** — the standard approach, performed during packing - **Post-pack pasteurisation** — an alternative thermal processing method - **Acids and sorbate** — chemical preservatives commonly used - **Avoid corks** — cork closures are not recommended for non-alc RTDs **Typical shelf-life benchmarks:** - Unopened ambient: 3 years (achieved by members) - Once opened: 12 months ambient (member experience) - Bag-in-box (5L): 9–12 months unopened; 4–6 months once opened **Key caveat:** Sodas like Sprite and Coke achieve their extended ambient shelf life through a combination of high acid content, sorbates, and pasteurisation. Unlike spirits and some low-ABV RTDs which require refrigeration, properly preserved non-alc beverages can remain shelf-stable. Members note that taste quality may degrade over very long storage periods even if the product remains safe.