Fresh juice preservation methods without any additives

Hi I am planning to make juice by cold press methods so please recommend some preservation techniques so I can preserve that juice for at least 10 - 15 days it should be cost effective.

Please can you mention the fruit name

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Clean label additive free processing with long shelf life is by by high pressure processing but with higher capital investment
https://www.tandfonline.com/doi/full/10.1080/23311932.2019.1568725

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It may citrus fruits and tropical